国际经济学第九版英文课后答案解析第7单元

国际经济学第九版课后答案
是每一位学习国际经济学的学生都十分关心的话题。

然而，教
材的出版方并没有提供官方答案，而且不同的教授和学校可能会
有不同的解释和理解。

因此，学生们需要不断学习和思考，才能
更好地理解这门学科。

在学习国际经济学的过程中，很多学生可能会遇到困难和挑战。

在解决这些问题的时候，查看课后答案是一种常见的方法。

提供
了一些参考答案，可供学生参考，但并不意味着其完全正确。

因此，学生还需要自己思考和研究，才能真正理解和掌握这门学科。

在学习国际经济学的过程中，掌握理论知识非常重要。

国际经
济学涉及到贸易、货币、投资和全球化等众多领域，需要学习者
具备广泛的知识背景和深入的理解。

此外，国际经济学的发展也
十分迅速，学生需要跟随最新的研究成果和政策变化，才能更好
地适应未来的挑战和机遇。

在学习国际经济学的过程中，实践经验也很重要。

学生需要利
用机会参与实践项目和研究课题，了解国际经济领域的最新发展
和趋势。

此外，国际经济学也需要学习者具备团队合作、跨文化
交流和创新思维等能力，这些能力的培养需要与他人合作和共同
探讨，实践是促使这些能力快速发展的必要手段。

总之，是学生学习国际经济学的一个参考工具，但并不是学习
的全部。

学生需要不断思考和研究，勇于提出问题和质疑，并探
索未来的机遇和挑战。

只有通过不断学习、思考和实践，才能真
正掌握国际经济学这门学科，为未来的职业发展打下坚实的基础。

A n s w e r s t o T e x t b o o k Q u e s t i o n s a n d P r o b l e m s CHAPTER 7?Unemployment and the Labor MarketQuestions for Review1. The rates of job separation and job finding determine the natural rate of unemployment. The rate of jobseparation is the fraction of people who lose their job each month. The higher the rate of job separation, the higher the natural rate of unemployment. The rate of job finding is the fraction of unemployed people who find a job each month. The higher the rate of job finding, the lower the natural rate ofunemployment.2. Frictional unemployment is the unemployment caused by the time it takes to match workers and jobs.Finding an appropriate job takes time because the flow of information about job candidates and job vacancies is not instantaneous. Because different jobs require different skills and pay different wages, unemployed workers may not accept the first job offer they receive.In contrast, structural unemployment is the unemployment resulting from wage rigidity and job rationing. These workers are unemployed not because they are actively searching for a job that best suits their skills (as in the case of frictional unemployment), but because at the prevailing real wage the quantity of labor supplied exceeds the quantity of labor demanded. If the wage does not adjust to clear the labor market, then these workers must wait for jobs to become available. Structural unemployment thus arises because firms fail to reduce wages despite an excess supply of labor.3. The real wage may remain above the level that equilibrates labor supply and labor demand because ofminimum wage laws, the monopoly power of unions, and efficiency wages.Minimum-wage laws cause wage rigidity when they prevent wages from falling to equilibrium levels. Although most workers are paid a wage above the minimum level, for some workers, especially the unskilled and inexperienced, the minimum wage raises their wage above the equilibrium level. It therefore reduces the quantity of their labor that firms demand, and creates an excess supply ofworkers, which increases unemployment.The monopoly power of unions causes wage rigidity because the wages of unionized workers are determined not by the equilibrium of supply and demand but by collective bargaining between union leaders and firm management. The wage agreement often raises the wage above the equilibrium level and allows the firm to decide how many workers to employ. These high wages cause firms to hire fewer workers than at the market-clearing wage, so structural unemployment increases.Efficiency-wage theories suggest that high wages make workers more productive. The influence of wages on worker efficiency may explain why firms do not cut wages despite an excess supply of labor. Even though a wage reduction decreases th e firm’s wage bill, it may also lower workerproductivity and therefore the firm’s profits.4. Depending on how one looks at the data, most unemployment can appear to be either short term orlong term. Most spells of unemployment are short; that is, most of those who became unemployed find jobs quickly. On the other hand, most weeks of unemployment are attributable to the small number of long-term unemployed. By definition, the long-term unemployed do not find jobs quickly, so they appear on unemployment rolls for many weeks or months.5. Europeans work fewer hours than Americans. One explanation is that the higher income tax rates inEurope reduce the incentive to work. A second explanation is a larger underground economy in Europe as a result of more people attempting to evade the high tax rates. A third explanation is the greater importance of unions in Europe and their ability to bargain for reduced work hours. A final explanation is based on preferences, whereby Europeans value leisure more than Americans do, and therefore elect to work fewer hours.Problems and Applications1. a. In the example that follows, we assume that during the school year you look for a part-time job,and that, on average, it takes 2 weeks to find one. We also assume that the typical job lasts 1semester, or 12 weeks.b. If it takes 2 weeks to find a job, then the rate of job finding in weeks isf = (1 job/2 weeks) = 0.5 jobs/week.If the job lasts for 12 weeks, then the rate of job separation in weeks iss = (1 job/12 weeks) = 0.083 jobs/week.c. From the text, we know that the formula for the natural rate of unemployment is(U/L) = [s/(s + f )],where U is the number of people unemployed, and L is the number of people in the labor force.Plugging in the values for f and s that were calculated in part (b), we find(U/L) = [0.083/(0.083 + 0.5)] = 0.14.Thus, if on average it takes 2 weeks to find a job that lasts 12 weeks, the natural rate ofunemployment for this population of college students seeking part-time employment is 14 percent.2. Call the number of residents of the dorm who are involved I, the number who are uninvolved U, and thetotal number of students T = I + U. In steady state the total number of involved students is constant.For this to happen we need the number of newly uninvolved students, (0.10)I, to be equal to thenumber of students who just became involved, (0.05)U. Following a few substitutions:(0.05)U = (0.10)I= (0.10)(T – U),soWe find that two-thirds of the students are uninvolved.3. To show that the unemployment rate evolves over time to the steady-state rate, let’s begin by defininghow the number of people unemployed changes over time. The change in the number of unemployed equals the number of people losing jobs (sE) minus the number finding jobs (fU). In equation form, we can express this as:U t + 1–U t= ΔU t + 1 = sE t–fU t.Recall from the text that L = E t + U t, or E t = L –U t, where L is the total labor force (we will assume that L is constant). Substituting for E t in the above equation, we findΔU t + 1 = s(L –U t) –fU t.Dividing by L, we get an expression for the change in the unemployment rate from t to t + 1:ΔU t + 1/L = (U t + 1/L) – (U t/L) = Δ[U/L]t + 1 = s(1 –U t/L) –fU t/L.Rearranging terms on the right side of the equation above, we end up with line 1 below. Now take line1 below, multiply the right side by (s + f)/(s + f) and rearrange terms to end up with line2 below:Δ[U/L]t + 1= s – (s + f)U t/L= (s + f)[s/(s + f) – U t/L].The first point to note about this equation is that in steady state, when the unemployment rate equals its natural rate, the left-hand side of this expression equals zero. This tells us that, as we found in the text, the natural rate of unemployment (U/L)n equals s/(s + f). We can now rewrite the above expression, substituting (U/L)n for s/(s + f), to get an equation that is easier to interpret:Δ[U/L]t + 1 = (s + f)[(U/L)n–U t/L].This expression shows the following:? If U t/L > (U/L)n (that is, the unemployment rate is above its natural rate), then Δ[U/L]t + 1 is negative: the unemployment rate falls.? If U t/L < (U/L)n (that is, the unemployment rate is below its natural rate), then Δ[U/L]t + 1 is positive: the unemployment rate rises.This process continues until the unemployment rate U/L reaches the steady-state rate (U/L)n.4. Consider the formula for the natural rate of unemployment,If the new law lowers the chance of separation s, but has no effect on the rate of job finding f, then the natural rate of unemployment falls.For several reasons, however, the new law might tend to reduce f. First, raising the cost of firing might make firms more careful about hiring workers, since firms have a harder time firing workers who turn out to be a poor match. Second, if job searchers think that the new legislation will lead them to spend a longer period of time on a particular job, then they might weigh more carefully whether or not to take that job. If the reduction in f is large enough, then the new policy may even increase the natural rate of unemployment.5. a. The demand for labor is determined by the amount of labor that a profit-maximizing firm wants tohire at a given real wage. The profit-maximizing condition is that the firm hire labor until themarginal product of labor equals the real wage,The marginal product of labor is found by differentiating the production function with respect tolabor (see Chapter 3 for more discussion),In order to solve for labor demand, we set the MPL equal to the real wage and solve for L:Notice that this expression has the intuitively desirable feature that increases in the real wagereduce the demand for labor.b. We assume that the 27,000 units of capital and the 1,000 units of labor are supplied inelastically (i.e., they will work at any price). In this case we know that all 1,000 units of labor and 27,000 units of capital will be used in equilibrium, so we can substitute these values into the above labor demand function and solve for W P .In equilibrium, employment will be 1,000, and multiplying this by 10 we find that the workers earn 10,000 units of output. The total output is given by the production function: Y =5K 13L 23Y =5(27,00013)(1,00023)Y =15,000.Notice that workers get two-thirds of output, which is consistent with what we know about theCobb –Douglas production function from Chapter 3.c. The real wage is now equal to 11 (10% above the equilibrium level of 10).Firms will use their labor demand function to decide how many workers to hire at the given realwage of 11 and capital stock of 27,000:So 751 workers will be hired for a total compensation of 8,261 units of output. To find the newlevel of output, plug the new value for labor and the value for capital into the production function and you will find Y = 12,393.d. The policy redistributes output from the 249 workers who become involuntarily unemployed tothe 751 workers who get paid more than before. The lucky workers benefit less than the losers lose as the total compensation to the working class falls from 10,000 to 8,261 units of output.e. This problem does focus on the analysis of two effects of the minimum-wage laws: they raise thewage for some workers while downward-sloping labor demand reduces the total number of jobs. Note, however, that if labor demand is less elastic than in this example, then the loss ofemployment may be smaller, and the change in worker income might be positive.6. a. The labor demand curve is given by the marginal product of labor schedule faced by firms. If acountry experiences a reduction in productivity, then the labor demand curve shifts to the left as in Figure 7-1. If labor becomes less productive, then at any given real wage, firms demand less labor. b. If the labor market is always in equilibrium, then, assuming a fixed labor supply, an adverseproductivity shock causes a decrease in the real wage but has no effect on employment orunemployment, as in Figure 7-2.c. If unions constrain real wages to remain unaltered, then as illustrated in Figure 7-3, employment falls to L 1 and unemployment equals L – L 1.This example shows that the effect of a productivity shock on an economy depends on the role ofunions and the response of collective bargaining to such a change.7. a. If workers are free to move between sectors, then the wage in each sector will be equal. If the wages were not equal then workers would have an incentive to move to the sector with the higher wage and this would cause the higher wage to fall, and the lower wage to rise until they were equal.b. Since there are 100 workers in total, L S = 100 – L M . We can substitute this expression into thelabor demand for services equation, and call the wage w since it is the same in both sectors:L S = 100 – L M = 100 – 4wL M = 4w.Now set this equal to the labor demand for manufacturing equation and solve for w:4w = 200 – 6ww = $20.Substitute the wage into the two labor demand equations to find L M is 80 and L S is 20.c. If the wage in manufacturing is equal to $25 then L M is equal to 50.d. There are now 50 workers employed in the service sector and the wage w S is equal to $12.50.e. The wage in manufacturing will remain at $25 and employment will remain at 50. If thereservation wage for the service sector is $15 then employment in the service sector will be 40. Therefore, 10 people are unemployed and the unemployment rate is 10 percent.8. Real wages have risen over time in both the United States and Europe, increasing the reward forworking (the substitution effect) but also making people richer, so they want to “buy” more leisure (the income effect). If the income effect dominates, then people want to work less as real wages go up. This could explain the European experience, in which hours worked per employed person have fallen over time. If the income and substitution effects approximately cancel, then this could explain the U.S.experience, in which hours worked per person have stayed about constant. Economists do not have good theories for why tastes might differ, so they disagree on whether it is reasonable to think that Europeans have a larger income effect than do Americans.9. The vacant office space problem is similar to the unemployment problem; we can apply the sameconcepts we used in analyzing unemployed labor to analyze why vacant office space exists. There is a rate of office separation: firms that occupy offices leave, either to move to different offices or because they go out of business. There is a rate of office finding: firms that need office space (either to start up or expand) find empty offices. It takes time to match firms with available space. Different types of firms require spaces with different attributes depending on what their specific needs are. Also, because demand for different goods fluctuates, there are “sectoral shifts”—changes in the composition ofdemand among industries and regions that affect the profitability and office needs of different firms.。

【最新整理，下载后即可编辑】这是我在网上找的，大多数题目都有，朋友们可以参考一下！有一点不确定的是G—L指数，大家再上网查看看，是乘100还是乘1？希望可以给你们帮助，预祝大家顺利通过！第二章古典国际贸易理论在古典贸易模型中，假设A国有120名劳动力，B国有50名劳动力，如果生产棉花的话，A国的人均产量是2吨，B国也是2吨；要是生产大米的话，A国的人均产量是10吨，B国则是16吨。

画出两国的生产可能性曲线并分析两国中哪一国拥有生产大米的绝对优势？哪一国拥有生产大米的比较优势？思路：B国由于每人能生产16吨大米，而A国每人仅生产10吨大米，所以B国具有生产大米的绝对优势。

从两国生产可能性曲线看出A国生产大米的机会成本为0.2，而B国为0.125，所以B国生产大米的机会成本或相对成本低于A国，B国生产大米具有比较优势。

1.下表列出了加拿大和中国生产1单位计算机和1单位小麦所需的劳动时间。

假定生产计算机和小麦都只用劳动，加拿大的总劳动为600小时，中国总劳动为800小时。

（1）计算不发生贸易时各国生产计算机的机会成本。

（2）哪个国家具有生产计算机的比较优势？哪个国家具有生产小麦的比较优势？（3）如果给定世界价格是1单位计算机交换22单位的小麦，加拿大参与贸易可以从每单位的进口中节省多少劳动时间？中国可以从每单位进口中节省多少劳动时间？如果给定世界价格是1单位计算机交换24单位的小麦，加拿大和中国分别可以从进口每单位的货物中节省多少劳动时间？（4）在自由贸易的情况下，各国应生产什么产品，数量是多少？整个世界的福利水平是提高还是降低了？试用图分析。

（以效用水平来衡量福利水平）思路：（1）中国生产计算机的机会成本为100/4=25，加拿大为60/3=20（2）因为加拿大生产计算机的机会成本比中国低，所以加拿大具有生产者计算机的比较优势，中国就具有生产小麦的比较优势。

（3）如果各国按照比较优势生产和出口，加拿大进口小麦出口计算机，中国进口计算机出口小麦。

EEC9Unit7教辅答案Part A【自主预习】一、中英互译1.努力；尝试2.青少年时期；青春期3.魔术的；有魔力的4.模仿5.取代；替换petitor7.similarity8.global9.volunteer10.remote二、写出划线词或短语在句中的含义。

1.祖国2.古代的3.代表；象征4.应受（报答或惩罚）5.责任；职责6.观点；角度7.文学作品8.画像9.适应10.参加【达标训练】一、用所给词的适当形式填空1.will be published2.similarities3.director4.translation5.admit6.imitation7.magicbinationpetition10.glorious二、选词或短语的适当形式填空1.was adapted2.attempt3.volunteers4.responsible5.homeland二、单项选择题1-5D B D B B6-10D C A C B四、把下列每对句子合并成含有定语从句的主从复合句1.The fan that you want is on the desk.2.The man who brought our textbooks here yesterday is in the next room.3.The magazine which he has taken away is mine.4.The students who don’t study hard will not pass the exam.5.The woman you saw in the park is our geography teacher.6.The letter I received yesterday is from my sister.7.The play that we saw last night was wonderful.8.The train which was going to Nanning was late.9.The boy who was here a minute ago is my brother.10.The tree he is climbing is quite tall.五、根据句意，选择框中短语并用正确形式填空1.stood out2.stand by3.stand up4.stands for六、七选五Passage A DBEGC Passage B DGECAPassage C BDFAE Passage D AECFD【学习加油站】大地点,一段时间in;on;by;from;withPart B第一部分听力1-5:CBACA6-10:CBAAC11-15:BBCAB16-20:BACAB第二部分阅读理解21-25CDBDA26-30CBABC31-35B D A B D36-40DCAFE第三部分完形填空41-45ABCDA46-50CBADB51-55DBCAC56-60DACBD第四部分语法填空61.for62.what63.which64.be destroyed65.operationed第五部分写作第一节短文改错71.were→was72.weeks→week73.to→from74.第一个the→an75.who后加is/was76.making→make77.They→He78.去掉for79.Follow→Following80.because→though/although/but/yet第二节书面表达范文After-class ActivitiesNowadays,after-class activities are becoming more and more popular in high schools.In our school,there are various kinds of activities,for example,arts and sports.We enjoy them very much.Playing football and reading stories are my favorites which do me lots of good.Besidesbuilding my body and enriching my knowledge，they also free me from the heavy work of study.Here I have some suggestions.To students,you’d better choose the activities which interest you and suit you;to schools,they should organize more activities for students and leave students more time for activities by giving them less homework.Dear friends,please actively take part in after-class activities,which will not only make your school life colorful,but also improve your learning.Part B听力原文录音原文Text1W:What are we going to get for Lydia’s birthday?M:How about a pair of running shoes?W:You know she hates doing exercise.M:Then I guess we can buy her a birthday cake.Text2M:Excuse me.Do you have time to help take a picture of us?W:Oh,I’m sorry.I’ve got to catch a bus.M:That’s OK.Text3M:It really annoys me when Kate calls her friends during office hours.W:If I were you,I would tell her to stop.M:Maybe you’re right.I will talk to her sometimeText4M:Here’s the menu,Madame.Would you like something to drink?W:Yes,please.May I see the wine list?M:Certainly.Here you are.Text5M:We need to have some fresh air.Do you mind my opening the window?W:As a matter of fact,I’m feeling a bit cold.Text6M:Guess what I’ll be doing this summer?W:What?M:I’m going to work at the Riverside Hotel.W:What exactly will you be doing?M:Let’s see.I’ll be doing some small repairs inside and outside the hotel.I’ll be cutting grass and taking care of the flowers.W:Sounds interesting.What’s the pay?M:Well,uh…about fifteen dollars an hour,five hours a day,and Sunday free.W:That’s good money.What are you going to do with it?M:I’ll pay for the textbooks for next term.Text7M:Hi,Sue.How’s it going?W:Oh,hi,Frank,just fine.How are your classes?M:Pretty good.I’m glad this is my last term here,though.W:Why is that?I thought you were enjoying school.M:I was.But now I’m getting tired of it.I’m ready for the real world.W:What are you planning to do when you graduate?M:First,I want to get a job as a computer programmer,and then after five years or so,I’d like to start my own business.W:Sounds good.I still have three terms to go until I’m done.M:You’ll make it for sure.Well,see you later.W:Bye!Text8M:Hello,Milton Hotel Reservations.How may I assist you?W:Hi,I’m calling to make some changes to an existing reservation.M:Certainly.Do you have the reservation number?W:Sure,it’s219.M:That’s a reservation for Sally Menkel.Is that right?W:Yes,that’s right.I’d like to change the check-in date from September15to September16.M:Certainly.I can make that change for you.Is that the only change?W:No,the check-out date will also change from the23rd to the24th.M:No problem.We have you arriving on the16th of September and leaving the24th of September —altogether,eight nights.Will there be anything else?W:Yes.Instead of a courtyard room,I’d like a room with a view,preferably on an upper floor. M:I can certainly change that for you,but there will be a change in the room rate.The new rate is $199per night,instead of the original$179.W:That’s OK.These are all the changes.Thank you very much.M:You’re welcome.Have a nice day!Text9W:Gordon,I’m going to Keswick in the Lake District this weekend.M:Really?W:Yeah,five of us.Why don’t you join us?We’re getting to Keswick on Friday.Then we’re going boating on Saturday.And on Sunday,we’re going to do some shopping.Then I will take some time to visit my aunt Lucy.M:You’re not going to camp,are you?Isn’t it a bit cold?W:No,we’re not.It is a bit cold.We’re staying in a country inn.It’s not like five-star hotels or anything.But it’s really comfortable.M:Hmm,sounds interesting.You know,it’s the boating that I don’t like.W:Well,what are you up to?M:Sit on my sofa all weekend and watch the DVDs I’ve just bought.And that will be a busy weekend.I may finish watching Friends.W:I don’t know how you can do that all weekend,Gordon.I’d get bored.M:I know,I know.But that’s really what I want to do.Text10M:Hello.Welcome to the program.In America,May and June are the traditional months for graduations.A listener in China,Wang Ming,who is about to get an engineering degree,wants to know how American college graduates find jobs.Right now,the answer is:not very easily.A latest study on the college job market showed that employers wanted to hire22%fewer graduates this year than last.The study also showed that just20%of those who looked for jobs before graduation have found one by now.This is compared to half of students who had looked for a job by this time two years ago.But one difference:fewer of this year’s graduates have started to search for jobs. Engineering graduates were more likely to have started their job search already,and to haveaccepted a job.This is among the best-paid professions for people with just a college degree.On average,engineering majors expect to start at about$62,000a year.。

CHAPTER 7ECONOMIC GROWTH AND INTERNATIONAL TRADEOUTLINE7.1 Introduction7.2 Growth of Factors of Production7.2a Labor Growth and Capital Accumulation Over Time7.2b The Rybczynski Theorem7.3 Technical Progress7.3a Neutral, Labor-Saving, and Capital-Saving Technical Progress7.3b Technical Progress and the Nation's Production FrontierCase Study 7-1: Changes in Relative Resource Endowments of Various Countries and Regions Case Study 7-2: Change in Capital-Labor Rations in Selected Countries7.4 Growth and Trade: The Small Country Case7.4a The Effects of Growth on Trade7.4b Illustration of Factor Growth, Trade, and Welfare7.4c Technical Progress, Trade, and WelfareCase Study 7-3: Growth of Output per Worker from Capital Deepening, TechnologicalChange, and Improvements in Efficiency7.5 Growth and Trade: The Large-Country Case7.5a Growth and the Nation's Terms of Trade and Welfare7.5b Immiserizing Growth7.5c Illustration of Beneficial Growth and TradeCase Study 7-4: Growth, Trade, and the Giants of the Future7.6 Growth, Change in Tastes, and Trade in Both Nations7.6a Growth and Trade in Both Nations7.6b Change in Tastes and Trade in Both NationsCase Study 7-5: Change in the Revealed Comparative Advantage of Various Countries or RegionsCase Study 7-6: Growth, Trade, and Welfare in the Leading Industrial NationsAppendix: A7.1 Formal Proof of Rybczynski TheoremA7.2 Growth with Factor ImmobilityA7.3 Graphical Analysis of Hicksian Technical ProgressKey TermsComparative statics Antitrade production and consumptionDynamic analysis Neutral production and consumptionBalanced growth Normal goodsRybczynski theorem Inferior goodsLabor-saving technical progress Terms-of-trade effectCapital-saving technical progress Wealth effectProtrade production and consumption Immiserizing growthLecture Guide1.This is not a core chapter and it is one of the most challenging chapters in international tradetheory. It is included for more advanced students and for completeness.2.If I were to cover this chapter, I would present two sections in each of three lectures.Time permitting, I would, otherwise cover Sections 1 and 2, paying special attention to the Rybczynski theorem.Answer to Problems1. a) See Figure 1.b) See Figure 2c) See Figure 3.2. See Figure 4.3. a) See Figure 5.b) See Figure 6.c) See Figure 7.4. Compare Figure 5 to Figure 1.Compare Figure 6 to Figure 3. Note that the two production frontiers have the same vertical or Y intercept in Figure 6 but a different vertical or Y intercept in Figure 3.Compare Figure 7 to Figure 2. Note that the two production frontiers have the samehorizontal or X intercept in Figure 7 but a different horizontal or X intercept in Figure 2.5. See Figure 8 on page 66.6. See Figure 9.7. See Figure 10.8. See Figure 11.9. See Figure 12.10. See Figure 13 on page 67.11. See Figure 14.12. See Figure 15.13.The United States has become the most competitive economy in the world since the early1990’s while the data in Table 7.3 refers to the 1965-1990 period.14.The data in Table 7.4 seem to indicate that China had a comparative advantage incapital-intensive commodities and a comparative disadvantage in unskilled-labor intensive commodities in 1973. This was very likely due to the many trade restrictions and subsidies, which distorted the comparative advantage of China.Its true comparative advantage became evident by 1993 after China had started to liberalize its economy.App. 1a. See Figure 16.1b. For production and consumption to actually occur at the newequilibrium point after the doubling of K in Nation 2, we mustassume either than commodity X is inferior or that Nation 2 is toosmall to affect the relative commodity prices at which it trades.1c. Px/Py must rise (i.e., Py/Px must fall) as a result of growth only.Px/Py will fall even more with trade.1. If the supply of capital increases in Nation 1 in the production of commodity Yonly, the VMPLy curve shifts up, and w rises in both industries. Some labor shifts to the production of Y, the output of Y rises and the output of X falls, r falls, and Px/Py is likely to rise.2. Capital investments tend to increase real wages because they raise the K/L ratioand the productivity of labor. Technical progress tends to increase K/L and realwages if it is L-saving and to reduce K/L and real wages if it is K-saving. Multiple-Choice Questions1. Dynamic factors in trade theory refer to changes in:a. factor endowmentsb. technologyc. tastes*d. all of the above2. Doubling the amount of L and K under constant returns to scale:a. doubles the output of the L-intensive commodityb. doubles the output of the K-intensive commodityc. leaves the shape of the production frontier unchanged*d. all of the above.3. Doubling only the amount of L available under constant returns to scale:a. less than doubles the output of the L-intensive commodity*b. more than doubles the output of the L-intensive commodityc. doubles the output of the K-intensive commodityd. leaves the output of the K-intensive commodity unchanged4. The Rybczynski theorem postulates that doubling L at constant relative commodity prices:a. doubles the output of the L-intensive commodity*b. reduces the output of the K-intensive commodityc. increases the output of both commoditiesd. any of the above5. Doubling L is likely to:a. increases the relative price of the L-intensive commodityb. reduces the relative price of the K-intensive commodity*c. reduces the relative price of the L-intensive commodityd. any of the above6.Technical progress that increases the productivity of L proportionately more than the productivity of K is called:*a. capital savingb. labor savingc. neutrald. any of the above7. A 50 percent productivity increase in the production of commodity Y:a. increases the output of commodity Y by 50 percentb. does not affect the output of Xc. shifts the production frontier in the Y direction only*d. any of the above8. Doubling L with trade in a small L-abundant nation:*a. reduces the nation's social welfareb. reduces the nation's terms of tradec. reduces the volume of traded. all of the above9. Doubling L with trade in a large L-abundant nation:a. reduces the nation's social welfareb. reduces the nation's terms of tradec. reduces the volume of trade*d. all of the above10.If, at unchanged terms of trade, a nation wants to trade more after growth, then the nation's terms of trade can be expected to:*a. deteriorateb. improvec. remain unchangedd. any of the above11. A proportionately greater increase in the nation's supply of labor than of capital is likely to result in a deterioration in the nation's terms of trade if the nation exports:a. the K-intensive commodity*b. the L-intensive commodityc. either commodityd. both commodities12. Technical progress in the nation's export commodity:*a. may reduce the nation's welfareb. will reduce the nation's welfarec. will increase the nation's welfared. leaves the nation's welfare unchanged13. Doubling K with trade in a large L-abundant nation:a. increases the nation's welfareb. improves the nation's terms of tradec. reduces the volume of trade*d. all of the above14. An increase in tastes for the import commodity in both nations:a. reduces the volume of trade*b. increases the volume of tradec. leaves the volume of trade unchangedd. any of the above15. An increase in tastes of the import commodity of Nation A and export in B:*a. will reduce the terms of trade of Nation Ab. will increase the terms of trade of Nation Ac. will reduce the terms of trade of Nation Bd. any of the aboveADDITIONAL ESSAYS AND PROBLEMS FOR PART ONE1.Assume that both the United States and Germany produce beef and computer chipswith the following costs:United States Germany(dollars) (marks)Unit cost of beef (B) 2 8Unit cost of computer chips (C) 1 2a) What is the opportunity cost of beef (B) and computer chips (C) in each country?b)In which commodity does the United States have a comparative cost advantage?What about Germany?c)What is the range for mutually beneficial trade between the United States andGermany for each computer chip traded?d)How much would the United States and Germany gain if 1 unit of beef isexchanged for 3 chips?Ans. a) In the United States:the opportunity cost of one unit of beef is 2 chips;the opportunity cost of one chip is 1/2 unit of beef.In Germany:the opportunity cost of one unit of beef is 4 chips;the opportunity cost of one chip is 1/4 unit of beef.b) The United States has a comparative cost advantage in beef with respect toGermany, while Germany has a comparative cost advantage in computer chips.c)The range for mutually beneficial trade between the United States and Germanyfor each unit of beef that the United States exports is2C < 1B < 4Cd) Both the United States and Germany would gain 1 chip for each unit of beeftraded.2.Given: (1) two nations (1 and 2) which have the same technology but differentfactor endowments and tastes, (2) two commodities (X and Y) produced under increasing costs conditions, and (3) no transportation costs, tariffs, or other obstructions to trade. Prove geometrically that mutually advantageous trade between the two nations is possible.Note: Your answer should show the autarky (no-trade) and free-trade points of production and consumption for each nation, the gains from trade of each nation,and express the equilibrium condition that should prevail when trade stops expanding.)Ans.: See Figure 1 on page 74.Nations 1 and 2 have different production possibilities curves and different community indifference maps. With these, they will usually end up with different relative commodity prices in autarky, thus making mutually beneficial trade possible.In the figure, Nation 1 produces and consumes at point A and Px/Py=P A in autarky, while Nation 2 produces and consumes at point A' and Px/Py=P A'. Since P A < P A',Nation 1 has a comparative advantage in X and Nation 2 in Y. Specialization inproduction proceeds until point B in Nation 1 and point B' in Nation 2, at which P B=P B' and the quantity supplied for export of each commodity exactly equals the quantity demanded for import. Thus, Nation 1 starts at point A in production and consumption in autarky, moves to point B in production, and by exchanging BC of X for CE of Y reaches point E in consumption. E > A since it involves more of both X and Y and lies on a higher community indifference curve. Nation 2 starts at A' in production and consumption in autarky, moves to point B' in production, and by exchanging B'C' of Y for C'E' of X reaches point E'in consumption (which exceeds A').At Px/Py=P B=P B', Nation 1 wants to export BC of X for CE of Y, while Nation 2 wants to export B'C' (=CE) of Y for C'E' (=BC) of X. Thus, P B=P B'is the equilibrium relative commodity price because it clears both (the X and Y) markets.3.Draw a figure showing: (1) in Panel A a nation's demand and supply curve for Atraded commodity and the nation's excess supply of the commodity, (2) in Panel C the trade partner's demand and supply curve for the same traded commodity and its excess demand for the commodity, and (3) in Panel B the supply and demand for the quantity traded of the commodity, its equilibrium price, and why a price above or below the equilibrium price will not persist. At any other price, QD QS, and P will change to P2.Ans. See Figure 2 on page 74.The equilibrium relative commodity price for commodity X (the traded commodityexported by Nation 1 and imported by Nation 2) is P2 and the equilibrium quantityof commodity X traded is Q2.4.a) Identify the conditions that may give rise to trade between two nations.b) What are some of the assumptions on which the Heckscher-Ohlin theory isbased?c) What does this theory say about the pattern of trade and effect of trade on factorprices?Ans. a) Trade can be based on a difference in factor endowments, technology, or tastes between two nations. A difference either in factor endowments or technology results in a different production possibilities frontier for each nation, which, unless neutralized by a difference in tastes, leads to a difference in relative commodity price and mutually beneficial trade. If two nations face increasing costs and have identical production possibilities frontiers but different tastes, there will also be a difference in relative commodity prices and the basis for mutually beneficial trade between the two nations. The difference in relative commodity prices is then translated into a difference in absolute commodity prices between the two nations, which is the immediate cause of trade.b) The Heckscher-Ohlin theory (sometimes referred to as the modern theory – asopposed to the classical theory - of international trade) assumes that nations have the same tastes, use the same technology, face constant returns to scale (i.e., a given percentage increase in all inputs increases output by the same percentage) but differ widely in factor endowments. It also says that in the face of identical tastes or demand conditions, this difference in factor endowments will result in a difference in relative factor prices between nations, which in turn leads to a difference in relative commodity prices and trade. Thus, in the Heckscher-Ohlin theory, the international difference in supply conditions alone determines the pattern of trade. To be noted is that the two nations need not be identical in other respects in order for international trade to be based primarily on the difference in their factor endowments.c) The Heckscher-Ohlin theorem postulates that each nation will export thecommodity intensive in its relatively abundant and cheap factor and import the commodity intensive in its relatively scarce and expensive factor. As an important corollary, it adds that under highly restrictive assumptions, trade will completely eliminate the pretrade relative and absolute differences in the price of homogeneous factors among nations. Under less restrictive and more usual conditions, however, trade will reduce, but not eliminate, the pretrade differences in relative and absolute factor prices among nations. In any event, the Heckscher-Ohlin theory does say something very useful on how trade affects factor prices and the distribution of income in each nation. Classical economists were practically silent on this point.5. consumers demand more of commodity X (the L-intensive commodity) and less ofcommodity Y (the K- intensive commodity). Suppose that Nation 1 is India, commodity X is textiles, and commodity Y is food. Starting from the no-trade equilibrium position and using the Heckscher-Ohlin model, trace the effect of this change in tastes on India's(a) relative commodity prices and demand for food and textiles,(b) production of both commodities and factor prices, and(c) comparative advantage and volume of trade.(d) Do you expect international trade to lead to the complete equalization ofrelative commodity and factor prices between India and the United States?Why?Ans. a. The change in tastes can be visualized by a shift toward the textile axis in India's indifference map in such a way that an indifference curve is tangentto the steeper segment of India's production frontier (because of increasingopportunity costs) after the increase in demand for textiles. This will causethe pretrade relative commodity price of textiles to rise in India.b. The increase in the relative price of textiles will lead domesticproducers in India to shift labor and capital from the production of food tothe production of textiles. Since textiles are L-intensive in relation to food,the demand for labor and therefore the wage rate will rise in India. At thesame time, as the demand for food falls, the demand for and thus the priceof capital will fall. With labor becoming relative more expensive,producers in India will substitute capital for labor in the production of bothtextiles and food.Even with the rise in relative wages and in the relative price of textiles,India still remains the L-abundant and low-wage nation with respect to anation such as the United States. However, the pretrade difference in therelative price of textiles between India and the United States is nowsomewhat smaller than before the change in tastes in India. As a result thevolume of trade required to equalize relative commodity prices and hencefactor prices is smaller than before. That is, India need now export asmaller quantity of textiles and import less food than before for therelative price of textiles in India and the United States to be equalized.Similarly, the gap between real wages and between India and the UnitedStates is now smaller and can be more quickly and easily closed (i.e., witha smaller volume of trade).c. Since many of the assumptions required for the complete equalization ofrelative commodity and factor prices do not hold in the real world, greatdifferences can be expected and do in fact remain between real wages inIndia and the United States. Nevertheless, trade would tend to reduce thesedifferences, and the H-O model does identify the forces that must beconsidered to analyze the effect of trade on the differences in the relative andabsolute commodity and factor prices between India and the United States.5.(a) Explain why the Heckscher-Ohlin trade model needs to be extended.(b) Indicate in what important ways the Heckscher-Ohlin trade model can beextended.(c) Explain what is meant by differentiated products and intra-industry trade.Ans. (a) The Heckscher-Ohlin trade model needs to be extended because, while generally correct, it fails to explain a significant portion of international trade, particularly the trade in manufactured products among industrial nations.(b)The international trade left unexplained by the basic Heckscher-Ohlin trade modecan be explained by(1) economies of scale,(2) intra-industry trade, and(3) trade based on imitation gaps and product differentiation.(c)Differentiated products refer to similar, but not identical, products (such as cars,typewriters, cigarettes, soaps, and so on) produced by the same industry or broad product group. Intra-industry trade refers to the international trade in differentiated products.。

The Answers of Chapter 71. The difference between direct and indirect financing has to do with whether theborrower and lender seek each other out or whether an intermediary matchesborrowers and lenders. Direct financing requires no intermediary to matchsavers and borrowers. An economy will benefit from having both direct andindirect financing because both are appropriate ways to save and invest underdifferent circumstances. As discussed in the text, financial intermediaries absorba fraction of each saver's dollar that is borrowed. Thus, the intermediary takessome of the funds that otherwise would have gone to a borrower. However, the financial intermediary provides an important service by reducing informationasymmetries, allowing savers to pool risk, and matching risk and return.Therefore, when an individual cannot research these issues on his/her own, the intermediary is necessary to help the financial markets operate. However, astrong bond market, in which borrowers and savers can directly interact, allows for informed parties to save the funds that otherwise would go to an intermediary.This, in turn, uses the savings more efficiently.2. Portfolio flows are relatively short term in nature (have a shorter term to maturity),involve lower borrowing costs, and can generate near-term income. They also do not require a firm to give up control to a foreign investor. Consequently, they may help to improve capital allocation within an economy and help the economy's financial sector develop. These are all potential benefits of portfolio investments.By the same token, however, they are also relatively easy to reverse in direction, which is a potential disadvantage of portfolio investment.On the other hand, foreign direct investment (FDI) involve some degree ofownership and control of a foreign firm, are typically long term in nature, and help provide a stabilizing influence on a nation's economy. As such, FDI is typically more difficult to arrange.It is not advantageous to rely on either type of investment exclusively, in so far as each type accomplishes different goals for an economy. Both near-andlong-term capital are important for an economy's growth.3. As either portfolio investment of FDI increase, the demand for the local currencyrises (e.g., there is a shift from D0 to D1), which puts upward pressure on the value of the currency, from S0 to S1. If the central bank expects to hold the value of the currency constant at S0, it will have to increase the quantity of the domesticcurrency supplied (e.g., accommodate the excess quantity demanded at the initial spot rate S0) to maintain the peg. The opposite would hold for capital outflows.4. Suppose that a multinational bank (MNB) headquartered in a developed economyenters a developing economy. The MNB has gained considerable expertise in working as a financial intermediary, and likely has achieved economies of scale in doing so. By entering a foreign market, it helps to allocate the savings more efficiently through its intermediation services; which in turn will lead to additional economic development. Specifically, it should help to make sure that the best investment projects are funded. Moreover, the competition it introduces into the capital market helps to improve the quality of the indigenous financialintermediaries. This, in turn, should also add to financial stability.5. Savers and borrowers can also benefit from the regulation of financialintermediaries when portfolio capital flows dominate a country's capital inflows.It can be argued that regulation to limit short-term inflows can stabilize theeconomy and that these regulations can be gradually lifted as the economybecomes more stable (financial markets develop) and resilient to external shocks.These regulations do impose costs in that they require resources to enforce, and may inhibit otherwise helpful capital inflows which may aid economicdevelopment. However, these costs must be considered against the potential losses that may be incurred if the absence of capital controls would lead to more volatile and capital markets (which may deter the inflow of foreign capital).6. Policymakers should undertake actions that attract both portfolio capital flows andFDI flows. Actions that improve transparency in both the private a public sector reduces information asymmetries and their associate problems thereby making portfolio flows more stable, in other words, reducing the risk of massive capital outflows. Policymakers may also undertake actions that promote education,improve the tax structure and tax collection, and improve the countriesinfrastructure. These actions may, in turn, attract FDI.7. In the following two examples it is assumed that the policymaker maintains apegged-exchange rate regime and does not opt for a floating-rate regime. Hence, the policymaker may either intervene and maintain the peg or change the value of the peg. In both cases there is pressure for the domestic currency to appreciate visa vis the foreign currency.a. If the exchange rate pressure is only temporary in nature, then the policymakermay intervene by accommodating the excess quantity demanded, as explained in question 3 above.b. Because the exchange rate pressure is longer-term in nature, the policymakerwould be well advised to revalue the domestic currency.8. The World Bank was initially established to help countries rebuild after WWIIand in the 1960s expanded to also make long term loans to developing nations in order to help reduce poverty and improve living standards. Recently, some of the World Bank's activities have begun to overlap the IMF's activities to finance long-term structural adjustments and provide refinancing for some heavilyindebted countries. Critics may argue that the tasks that are duplicated by the IMF and the World Bank create conflicting goals for the World Bank. Thus, the two organizations may each benefit by focusing on different aims. For instance, the IMF may return to financing shorter-term objectives and leave the World Bank to worry about longer-term projects.Another conflicting line of reasoning involves donors' expectation that the World Bank maintain a revenue stream form its projects. This can be argues asunrealistic, however, in that the poorest countries are less likely to yield a payoff for the needed projects; and these are precisely the countries that the World Bank is designed and intended to help. On the other hand, the less risky projects,which could provide a positive revenue stream are likely to attract private capital.9. The first cause of a crisis could be an imbalance in the economy. In other words,an incongruity in economic fundamentals could cause a crisis. Possibleindicators include theoretical divergences between various economic variables such as the exchange rate and interest rates, income, and money supply. In terms of evaluation, if fundamental economic variables seem to be out of line, there may be an impending crisis.A second cause is that of self-fulfilling expectations and contagion effects. Inthis case, mere expectations of a potential inability to maintain a specifiedexchange rate or a slight incongruity between economic conditions and the market exchange rate may cause a cascade of speculation that leads to a crisis. Since this is based on perception, it is difficult to find an indicator. One possibleindicator would be trading volumes of currency for countries that may be at risk from the viewpoint of economic fundamentals. If trading volumes grew quickly,a crisis may be on the horizon.Finally, the structural moral hazard problem may indicate a crisis. In this case, a credit rating bureau, such as Moody's may provide the data needed to indicate a potential crisis. The quality of the credit rating would be relatively easilyinterpreted to indicate a potential crisis.10.Answers will vary. A potential strength of this proposal would be the centralized,and assumedly unified, efforts to stabilize the global economic environment. If it works, the global economy would be more stable. A potential weakness involves the question of how practical this proposal would be, and how easy it would be to match individual countries' domestic policy goals with the organization's global goals and economic interventions. A potential of conflict between theorganization's interventions and national interests could be a significant weakness.11. It can be argued that such below market interest rate loans are critical for adeveloping nation's economy in order for the economy to grow unburdened by high interest payments when it is trying to funnel profits back into the economy and sustain growth. Conversely, providing these non-market rate loans can also be argued to distort the market for loanable funds and attract inefficientinvestment. Students' perspectives will vary as to which argument is the best.。

Problems and Applications1.If an early freeze in California sours the lemon crop, the supply curve for lemons shiftsto the left, as shown in Figure 7-5.The result is a rise in the price of lemons and adecline in consumer surplus from A + B + C to just A. So consumer surplus declines by the amount B + C.Figure 7-5In the market for lemonade, the higher cost of lemons reduces the supply of lemonade,as shown in Figure 7-6.The result is a rise in the price of lemonade and a decline inconsumer surplus from D + E + F to just D, a loss of E + F. Note that an event that affectsconsumer surplus in one market often has effects on consumer surplus in other markets.Figure 7-62. A rise in the demand for French bread leads to an increase in producer surplus in themarket for French bread, as shown in Figure 7-7.The shift of the demand curve leads to an increased price, which increases producer surplus from area A to area A + B + C.Figure 7-7The increased quantity of French bread being sold increases the demand for flour, asshown in Figure 7-8.As a result, the price of flour rises, increasing producer surplusfrom area D to D + E + F. Note that an event that affects producer surplus in onemarket leads to effects on producer surplus in related markets.Figure 7-83. a.Bert’ s demand schedule is:Price Quantity DemandedMore than $7 0$5 to $7 1$3 to $5 2$1 to $3 3$1 or less 4Bert’ s demand curve is shown in Figure 7 -9.Figure 7-9b.When the price of a bottle of water is $4, Bert buys two bottles of water.Hisconsumer surplus is shown as area A in the figure.He values his first bottle ofwater at $7, but pays only $4 for it, so has consumer surplus of $3.He valueshis second bottle of water at $5, but pays only $4 for it, so has consumersurplus of $1.Thus Bert’ s total consumer surplus is $3 + $1 = $4, which isthe area of A in the figure.c.When the price of a bottle of water falls from $4 to $2, Bert buys three bottlesof water, an increase of one. His consumer surplus consists of both areas Aand B in the figure, an increase in the amount of area B. He gets consumersurplus of $5 from the first bottle ($7 value minus $2 price), $3 from thesecond bottle ($5 value minus $2 price), and $1 from the third bottle ($3 valueminus $2 price), for a total consumer surplus of $9. Thus consumer surplusrises by $5 (which is the size of area B) when the price of a bottle of water fallsfrom $4 to $2.4. a. Ernie ’ s supply schedule for water is:Price Quantity SuppliedMore than $7 4$5 to $7 3$3 to $5 2$1 to $3 1Less than $1 0Ernie’ s supply curve is shown in Figure 7 -10.Figure 7-10b.When the price of a bottle of water is $4, Ernie sells two bottles of water.Hisproducer surplus is shown as area A in the figure.He receives $4 for his firstbottle of water, but it costs only $1 to produce, so Ernie has producer surplusof $3.He also receives $4 for his second bottle of water, which costs $3 toproduce, so he has producer surplus of$1. Thus Ernie’ s total producersurplus is $3 + $1 = $4, which is the area of A in the figure.c.When the price of a bottle of water rises from $4 to $6, Ernie sells three bottlesof water, an increase of one.His producer surplus consists of both areas Aand B in the figure, an increase by the amount of area B.He gets producersurplus of $5 from the first bottle ($6 price minus $1 cost), $3 from the secondbottle ($6 price minus $3 cost), and $1 from the third bottle ($6 price minus $5price), for a total producer surplus of $9.Thus producer surplus rises by $5(which is the size of area B) when the price of a bottle of water rises from $4to $6.5. a. From Ernie ’ s supply schedule and Bert ’ s demand schedule, the quantitydemanded and supplied are:Price Quantity Supplied Quantity Demanded$ 2 1 34 2 26 3 1Only a price of $4 brings supply and demand into equilibrium, withan equilibrium quantity of 2.b.At a price of $4, consumer surplus is $4 and producer surplus is $4, as shownin problems 3 and 4.Total surplus is $4 + $4 = $8.c.If Ernie produced one fewer bottle, his producer surplus would decline to $3,as shown in problem 4.If Bert consumed one fewer bottle, his consumersurplus would decline to $3, as shown in problem 3. So total surplus would declineto $3 + $3 = $6.d.If Ernie produced one additional bottle of water, his cost would be $5, but theprice is only $4, so his producer surplus would decline by $1.If Bertconsumed one additional bottle of water, his value would be $3, but the priceis $4, so his consumer surplus would decline by $1.So total surplus declinesby $1 + $1 = $2.6. a.The effect of falling production costs in the market for stereos results in a shiftto the right in the supply curve, as shown in Figure 7-11.As a result, theequilibrium price of stereos declines and the equilibrium quantity increases.b.The decline in the price of stereos increases consumer surplus from area A to A+ B + C + D, an increase in the amount B + C + D.Prior to the shift in supply,producer surplus was areas B + E (the area above the supply curve and belowthe price).After the shift in supply, producer surplus is areas E + F + G.Soproducer surplus changes by the amount F + G - B, which may be positive ornegative.The increase in quantity increases producer surplus, while thedecline in the price reduces producer surplus.Since consumer surplus risesby B + C + D and producer surplus rises by F + G - B, total surplus rises by C+ D+F+G.c.If the supply of stereos is very elastic, then the shift of the supply curvebenefits consumers most.To take the most dramatic case, suppose thesupply curve were horizontal, as shown in Figure 7-12.Then there is noproducer surplus at all.Consumers capture all the benefits of fallingproduction costs, with consumer surplus rising from area A to area A + B.Figure 7-11Figure 7-127. Figure 7-13 shows supply and demand curves for haircuts. Supply equals demand ata quantity of three haircuts and a price between $4 and $5. Firms A, C, and D shouldcut the hair of Sally Jessy, Jerry, and Montel. Oprah ’ s willingness to pay is too low and firm B ’ s costs are too high, so they do not participate. The maximum total surplus isthe area between the demand and supply curves, which totals $11 ($8 value minus$2 cost for the first haircut, plus $7 value minus $3 cost for the second, plus $5 valueminus $4 cost for the third).Figure 7-138. a.The effect of falling production costs in the market for computers results in ashift to the right in the supply curve, as shown in Figure 7-14.As a result, theequilibrium price of computers declines and the equilibrium quantity increases.The decline in the price of computers increases consumer surplus from area Ato A + B + C + D, an increase in the amount B + C + D.Figure 7-14Prior to the shift in supply, producer surplus was areas B + E (the area abovethe supply curve and below the price).After the shift in supply, producersurplus is areas E + F + G.So producer surplus changes by the amount F + G- B, which may be positive or negative.The increase in quantity increasesproducer surplus, while the decline in the price reduces producer surplus. Sinceconsumer surplus rises by B + C + D and producer surplus rises by F + G - B,total surplus rises by C + D + F + G.——Figure 7-15b.Since adding machines are substitutes for computers, the decline in the priceof computers means that people substitute computers for adding machines,shifting the demand for adding machines to the left, as shown in Figure 7-15.The result is a decline in both the equilibrium price and equilibrium quantity ofadding machines.Consumer surplus in the adding-machine market changesfrom area A + B to A + C, a net gain of C - B.Producer surplus changes fromarea C + D + E to area E, a net loss of C + D.Adding machine producers aresad about technological advance in computers because their producersurplus declines.c.Since software and computers are complements, the decline in the price andincrease in the quantity of computers means that people’ s demand forsoftware increases, shifting the demand for software to the right, as shown inFigure 7-16. The result is an increase in both the price and quantity of software.Consumer surplus in the software market changes from B + C to A+B, a net increase of A - C. Producer surplus changes from E to C + D + E, anincrease of C + D, so software producers should be happy about the technologicalprogress in computers.d.Yes, this analysis helps explain why Bill Gates is one the world’ s richest msince his company produces a lot of software that’ s a complement withcomputers and there has been tremendous technological advance incomputers.——Figure 7-169. a. Figure 7-17 illustrates the demand for medical care. If each procedure has aprice of $100, quantity demanded will be Q 1 procedures.Figure 7-17b.If consumers pay only $20 per procedure, the quantity demanded will be Q 2procedures.Since the cost to society is $100, the number of proceduresperformed is too large to maximize total surplus.The quantity thatmaximizes total surplus is Q 1 procedures, which is less than Q2.c.The use of medical care is excessive in the sense that consumers getprocedures whose value is less than the cost of producing them.As a result,——the economy’ s total surplus is reduced.d.To prevent this excessive use, the consumer must bear the marginal cost ofthe procedure.But this would require eliminating insurance.Anotherpossibility would be that the insurance company, which pays most of themarginal cost of the procedure ($80, in this case) could decide whether theprocedure should be performed.But the insurance company doesn’ t get thebenefits of the procedure, so its decisions may not reflect the value to theconsumer.10. a. Figure 7-18 illustrates the effect of the drought. The supply curve shifts tothe left, leading to a rise in the equilibrium price from P 1 to P 2 and a decline inthe equilibrium quantity from Q 1 to Q 2 .Figure 7-18b.If the price of water is not allowed to change, there will be an excess demandfor water, with the shortage shown on the figure as the difference between Q 1and Q 3 .c.The system for allocating water is inefficient because it no longer allocateswater to those who value it most highly.Some people who value water atmore than its cost of production will be unable to obtain it, so societysurplus isn’ t maximized.The allocation system seems unfair as well.Water is allocated simply on pastusage, rewarding past wastefulness.If a family’ s demand for water increases,——say because of an increase in family size, the policy doesn ’ t allow them to obtain more water. Poor families, who probably used water mostly fornecessary uses like drinking, would suffer more than wealthier families whowould have to cut back only on luxury uses of water like operating backyardfountains and pools. However, the policy also keeps the price of water lower,which benefits poor families, since otherwise more of their family budgetwould have to go for water.d. If the city allowed the price of water to rise to its equilibrium price P 2 , theallocation would be more efficient. Quantity supplied would equal quantitydemanded and there would be no shortage. Total surplus would bemaximized.Whether the market allocation would be more or less fair than theproportionate reduction in water under the old policy is difficult to say, but it islikely to be more fair. Notice that the quantity supplied would be higher (Q 2)in this case than under the water restrictions (Q 3 ), so there ’ s less reduction inwater usage. To make the market solution even more fair, the governmentcould provide increased tax relief or welfare payments for poor families whosuffer from paying the higher water prices.。

克鲁格曼《国际经济学》中文版·第九版课后习题答案克鲁格曼《国际经济学》中文版·第九版课后习题答案第一章练习与答案1．为什么说在决定生产和消费时，相对价格比绝对价格更重要？答案提示：当生产处于生产边界线上，资源则得到了充分利用，这时，要想增加某一产品的生产，必须降低另一产品的生产，也就是说，增加某一产品的生产是有机会机本（或社会成本）的。

生产可能性边界上任何一点都表示生产效率和充分就业得以实现，但究竟选择哪一点，则还要看两个商品的相对价格，即它们在市场上的交换比率。

相对价格等于机会成本时，生产点在生产可能性边界上的位置也就确定了。

所以，在决定生产和消费时，相对价格比绝对价格更重要。

2．仿效图1—6和图1—7，试推导出Y商品的国民供给曲线和国民需求曲线。

答案提示：3．在只有两种商品的情况下，当一个商品达到均衡时，另外一个商品是否也同时达到均衡？试解释原因。

答案提示：4．如果生产可能性边界是一条直线，试确定过剩供给（或需求）曲线。

答案提示：5．如果改用Y商品的过剩供给曲线（B国）和过剩需求曲线（A 国）来确定国际均衡价格，那么所得出的结果与图1—13中的结果是否一致？答案提示：国际均衡价格将依旧处于贸易前两国相对价格的中间某点。

6．说明贸易条件变化如何影响国际贸易利益在两国间的分配。

答案提示：一国出口产品价格的相对上升意味着此国可以用较少的出口换得较多的进口产品，有利于此国贸易利益的获得，不过，出口价格上升将不利于出口数量的增加，有损于出口国的贸易利益；与此类似，出口商品价格的下降有利于出口商品数量的增加，但是这意味着此国用较多的出口换得较少的进口产品。

对于进口国来讲，贸易条件变化对国际贸易利益的影响是相反的。

7．如果国际贸易发生在一个大国和一个小国之间，那么贸易后，国际相对价格更接近于哪一个国家在封闭下的相对价格水平？答案提示：贸易后，国际相对价格将更接近于大国在封闭下的相对价格水平。

rketsWHAT’S NEW IN THE SIXTH EDITION:There are no major changes to this chapter.LEARNING OBJECTIVES:By the end of this chapter, students should understand:the link between buyers’ willingness to pay for a good and the demand curve.how to define and measure consumer surplus.the link between sellers’ costs of producing a good and the supply curve.how to define and measure producer surplus.that the equilibrium of supply and demand maximizes total surplus in a market.CONTEXT AND PURPOSE:Chapter 7 is the first chapter in a three-chapter sequence on welfare economics and market efficiency. Chapter 7 employs the supply and demand model to develop consumer surplus and producer surplus as a measure of welfare and market efficiency. These concepts are then utilized in Chapters 8 and 9 to determine the7CONSUMERS, PRODUCERS, AND THE EFFICIENCY OF MARKETSwinners and losers from taxation and restrictions on international trade.The purpose of Chapter 7 is to develop welfare economics—the study of how the allocation of resources affects economic well-being. Chapters 4 through 6 employed supply and demand in a positive framework, which focused on the question, “What is the equilibrium price and quantity in a market?” This chapter now addresses the normative question, “Is the equ ilibrium price and quantity in a market the best possible solution to the resource allocation problem, or is it simply the price and quantity that balance supply and demand?” Students will discover that under most circumstances the equilibrium price and quantity is also the one that maximizes welfare.KEY POINTS:Consumer surplus equals buyers’ willingness to pay for a good minus the amount they actually pay for it, and it measures the benefit buyers get from participating in a market. Consumer surplus can be computed by finding the area below the demand curve and above the price.Producer surplus equals the amount sellers receive for their goods minus their costs of production, and it measures the benefit sellers get from participating in a market. Producer surplus can be computed by finding the area below the price and above the supply curve.An allocation of resources that maximizes the sum of consumer and producer surplus is said to be efficient. Policymakers are often concerned with the efficiency, as well as the equality, of economic outcomes.The equilibrium of supply and demand maximizes the sum of consumer and producer surplus. That is, the invisible hand of the marketplace leads buyers and sellers to allocate resources efficiently.Markets do not allocate resources efficiently in the presence of market failures such as market power or externalities.CHAPTER OUTLINE:I. Definition of welfare economics: the study of how the allocation of resources affects economic well-being.II. Consumer SurplusStudents often are confused by the use of the word “welfare.” Remind them that we are talking about social well-being and not public assistance.A. Willingness to Pay1. Definition of willingness to pay: the maximum amount that abuyer will pay for a good.2. Example: You are auctioning a mint-condition recording ofElvis Presley’s first album. Four buyers show up. Theirwillingness to pay is as follows:If the bidding goes to slightly higher than $80,all buyers drop out except for John. Because Johnis willing to pay more than he has to for the album,he derives some benefit from participating in themarket.3. Definition of consumer surplus: the amount a buyer iswilling to pay for a good minus the amount the buyeractually pays for it.4. Note that if you had more than one copy of the album, theover $70 in the case of two albums) and both John and Paul would gain consumer surplus.B. Using the Demand Curve to Measure Consumer Surplus1. We can use the information on willingness to pay to derivea demand curve for the rare Elvis Presley album.2. At any given quantity, the price given by the demand curvereflects the willingness to pay of the marginal buyer.Because the demand curve shows the buyers’ willingness to pay, we can use the demand curve to measure consumersurplus.Figure 23. Consumer surplus can be measured as the area below thedemand curve and above the price.C. How a Lower Price Raises Consumer SurplusFigure 31. As price falls, consumer surplus increases for two reasons.a. Those already buying the product will receive additionalconsumer surplus because they are paying less for theproduct than before (area A on the graph).b. Because the price is now lower, some new buyers willenter the market and receive consumer surplus on theseadditional units of output purchased (area B on thegraph).D. What Does Consumer Surplus Measure?1. Remember that consumer surplus is the difference between the amount that buyers are willing to pay for a good and the price that they actually pay.2. Thus, it measures the benefit that consumers receive from the good as the buyers themselves perceive it.III. Producer SurplusA. Cost and the Willingness to Sell1. Definition of cost: the value of everything a seller mustgive up to produce a good .ALTERNATIVE CLASSROOM EXAMPLE:Review the material on price ceilings from Chapter 6. Redraw the market for two-bedroom apartments in your town. Draw in a price ceiling below the equilibrium price.Then go through:▪ consumer surplus before the price ceiling is put into place. ▪ consumer surplus after the price ceiling is put into place.You will need to take some time to explain the relationship between the producers’ willingness to sell and the cost of producing the good. The relationship between cost and the supply curve is not as apparent as the relationship between the demand curve and willingness to pay.It is important to stress that consumer surplus is measured in monetary terms. Consumer surplus gives us a way to place a monetary cost on inefficient market outcomes (due to government involvement or market failure).2. Example: You want to hire someone to paint your house. Youaccept bids for the work from four sellers. Each painter is willing to work if the price you will pay exceeds heropportunity cost. (Note that this opportunity cost thusrepresents willingness to sell.) The costs are:3. Bidding will stop when the price gets to be slightly below$600. All sellers will drop out except for Grandma. Because Grandma receives more than she would require to paint the house, she derives some benefit from producing in themarket.4. Definition of producer surplus: the amount a seller is paidfor a good minus the seller’s cost of providing it.5. Note that if you had more than one house to paint, theprice in the auction would end up being higher (a little under $800 in the case of two houses) and both Grandma and Georgia would gain producer surplus.B. Using the Supply Curve to Measure Producer Surplus1. We can use the information on cost (willingness to sell) toderive a supply curve for house painting services.Price Sellers QuantitySupplied$900 ormoreMary, Frida,Georgia, Grandma4$800 to$900Frida, Georgia,Grandma3$600 to$800Georgia, Grandma2$500 to$600Grandma1less than$500None02. At any given quantity, the price given by the supply curverepresents the cost of the marginal seller. Because thesupply curve shows the sellers’ cost (willingness to sell), we can use the supply curve to measure producer surplus. Figure 4Figure 53. Producer surplus can be measured as the area above thesupply curve and below the price.C. How a Higher Price Raises Producer Surplus1. As price rises, producer surplus increases for two reasons.a. Those already selling the product will receiveadditional producer surplus because they are receivingmore for the product than before (area C on the graph).b. Because the price is now higher, some new sellers willenter the market and receive producer surplus on theseadditional units of output sold (area D on the graph).D. Producer surplus is used to measure the economic well-beingof producers, much like consumer surplus is used to measure the economic well-being of consumers.Figure 6ALTERNATIVE CLASSROOM EXAMPLE:Review the material on price floors from Chapter 6. Redraw the market for anagricultural product such as corn. Draw in a price support above the equilibriumprice.Then go through:▪ producer surplus before the price support is put in place.▪ producer surplus after the price support is put in place.IV. Market EfficiencyA. The Benevolent Social Planner1. The economic well-being of everyone in society can bemeasured by total surplus, which is the sum of consumersurplus and producer surplus:Total Surplus = Consumer Surplus + ProducerSurplusTotal Surplus = (Value to Buyers – AmountPaid by Buyers) +(Amount Received by Sellers – Cost toSellers)Because the Amount Paid by Buyers = AmountReceived bySellers:2. Definition of efficiency: the property of a resource allocation of maximizing the total surplus received by all members of society .3. Definition of equality: the property of distributingeconomic prosperity uniformly the members of society .Total Surplus = Value to Buyers Cost to SellersNow might be a good time to point out that many government policies involve a trade-off between efficiency and equity. When you evaluate government policies, like price ceilings or floors, you can explain them in terms of equity and efficiency.Pretty Woman, Chapter 6. Vivien (Julia Roberts) and Edward (Richard Gere) negotiate a price. Afterward, Vivien reveals she would have accepted a lower price, while Edward admits he would have paid more. If you have done a good job of introducing consumer and producer surplus, you will see the light bulbs go off above your students’ heads as they watch this clip.B. Evaluating the Market EquilibriumFigure 71. At the market equilibrium price:a. Buyers who value the product more than the equilibriumprice will purchase the product; those who do not, willnot purchase the product. In other words, the freemarket allocates the supply of a good to the buyers whovalue it most highly, as measured by their willingnessto pay.b. Sellers whose costs are lower than the equilibrium pricewill produce the product; those whose costs are higher,will not produce the product. In other words, the freemarket allocates the demand for goods to the sellers whocan produce it at the lowest cost.2. Total surplus is maximized at the market equilibrium.Figure 8a. At any quantity of output smaller than the equilibriumquantity, the value of the product to the marginal buyer is greater than the cost to the marginal seller so total surplus would rise if output increases.b. At any quantity of output greater than the equilibriumquantity, the value of the product to the marginal buyer is less than the cost to the marginal seller so totalsurplus would rise if output decreases.3. Note that this is one of the reasons that economistsbelieve Principle #6: Markets are usually a good way toorganize economic activity.C. In the News: Ticket Scalping1. Ticket scalping is an example of how markets work toachieve an efficient outcome.2. This article from The Boston Globe describes economist ChipCase’s experience with ticket scalping.It would be a good idea to remind students that there are circumstances when the market process does not lead to the most efficient outcome. Examples include situations such as when a firm (or buyer) has market power over price or when there are externalities present. These situations will be discussed in later chapters.D. Case Study: Should There Be a Market in Organs?1. As a matter of public policy, people are not allowed tosell their organs.a. In essence, this means that there is a price ceiling onorgans of $0.b. This has led to a shortage of organs.2. The creation of a market for organs would lead to a moreefficient allocation of resources, but critics worry aboutthe equity of a market system for organs.V. Market Efficiency and Market FailureA. To conclude that markets are efficient, we made severalassumptions about how markets worked.1. Perfectly competitive markets.2. No externalities.B. When these assumptions do not hold, the market equilibriummay not be efficient.C. When markets fail, public policy can potentially remedy thesituation.SOLUTIONS TO TEXT PROBLEMS:Quick Quizzes1. Figure 1 shows the demand curve for turkey. The price ofturkey is P1 and the consumer surplus that results fromthat price is denoted CS. Consumer surplus is the amount abuyer is willing to pay for a good minus the amount thebuyer actually pays for it. It measures the benefit to buyers of participating in a market.Figure 1 Figure 22. Figure 2 shows the supply curve for turkey. The price ofturkey is P1 and the producer surplus that results from that price is denoted PS. Producer surplus is the amount sellers are paid for a good minus the sellers’ cost of providing it (measured by the supply curve). It measures the benefit to sellers of participating in a market.Figure 33. Figure 3 shows the supply and demand for turkey. The priceof turkey is P1, consumer surplus is CS, and producersurplus is PS. Producing more turkeys than the equilibriumquantity would lower total surplus because the value to themarginal buyer would be lower than the cost to the marginalseller on those additional units.Questions for Review1. The price a buyer is willing to pay, consumer surplus, andthe demand curve are all closely related. The height of thedemand curve represents the willingness to pay of thebuyers. Consumer surplus is the area below the demand curveand above the price, which equals the price that each buyeris willing to pay minus the price actually paid.2. Sellers' costs, producer surplus, and the supply curve areall closely related. The height of the supply curverepresents the costs of the sellers. Producer surplus isthe area below the price and above the supply curve, whichequals the price received minus each seller's costs ofproducing the good.Figure 43. Figure 4 shows producer and consumer surplus in a supply-and-demand diagram.4. An allocation of resources is efficient if it maximizestotal surplus, the sum of consumer surplus and producersurplus. But efficiency may not be the only goal ofeconomic policymakers; they may also be concerned aboutequity the fairness of the distribution of well-being.5. The invisible hand of the marketplace guides the self-interest of buyers and sellers into promoting generaleconomic well-being. Despite decentralized decision makingand self-interested decision makers, free markets oftenlead to an efficient outcome.6. Two types of market failure are market power andexternalities. Market power may cause market outcomes to beinefficient because firms may cause price and quantity todiffer from the levels they would be under perfectcompetition, which keeps total surplus from being maximized.Externalities are side effects that are not taken intoaccount by buyers and sellers. As a result, the free marketdoes not maximize total surplus.Problems and Applications1. a. Consumer surplus is equal to willingness to pay minusthe price paid. Therefore, Melissa’s willingness to paymust be $200 ($120 + $80).b. Her consumer surplus at a price of $90 would be $200 −$90 = $110.c. If the price of an iPod was $250, Melissa would not havepurchased one because the price is greater than herwillingness to pay. Therefore, she would receive noconsumer surplus.2. If an early freeze in California sours the lemon crop, thesupply curve for lemons shifts to the left, as shown inFigure 5. The result is a rise in the price of lemons and adecline in consumer surplus from A + B + C to just A. Soconsumer surplus declines by the amount B + C.Figure 5 Figure 6In the market for lemonade, the higher cost of lemonsreduces the supply of lemonade, as shown in Figure 6. Theresult is a rise in the price of lemonade and a decline inconsumer surplus from D + E + F to just D, a loss of E + F.Note that an event that affects consumer surplus in onemarket often has effects on consumer surplus in othermarkets.3. A rise in the demand for French bread leads to an increasein producer surplus in the market for French bread, asshown in Figure 7. The shift of the demand curve leads to an increased price, which increases producer surplus from area A to area A + B + C.Figure 7The increased quantity of French bread being sold increases the demand for flour, as shown in Figure 8. As a result, the price of flour rises, increasing producer surplus from area D to D + E + F. Note that an event that affectsproducer surplus in one market leads to effects on producer surplus in related markets.Figure 84. a. Bert’s demand schedule is:Price QuantityDemandedMore than$7$5 to $71$3 to $52$1 to $33$1 or less4Bert’s demand curve is shown in Figure 9.Figure 9b. When the price of a bottle of water is $4, Bert buys twobottles of water. His consumer surplus is shown as areaA in the figure. He values his first bottle of water at$7, but pays only $4 for it, so has consumer surplus of $3. He values his second bottle of water at $5, but pays only $4 for it, so has consumer surplus of $1. ThusBert’s total consumer surplus is $3 + $1 = $4, which is the area of A in the figure.c. When the price of a bottle of water falls from $4 to $2,Bert buys three bottles of water, an increase of one.His consumer surplus consists of both areas A and B in the figure, an increase in the amount of area B. He gets consumer surplus of $5 from the first bottle ($7 value minus $2 price), $3 from the second bottle ($5 valueminus $2 price), and $1 from the third bottle ($3 value minus $2 price), for a total consumer surplus of $9.Thus consumer surplus rises by $5 (which is the size of area B) when the price of a bottle of water falls from $4 to $2.5. a. Ernie’s supply schedule for water is:Price Quantity SuppliedMore than$74$5 to $73$3 to $52$1 to $31Less than$1Ernie’s sup ply curve is shown in Figure 10.Figure 10b. When the price of a bottle of water is $4, Ernie sellstwo bottles of water. His producer surplus is shown as area A in the figure. He receives $4 for his firstbottle of water, but it costs only $1 to produce, soErnie has producer surplus of $3. He also receives $4 for his second bottle of water, which costs $3 toproduce, so he has producer surplus of $1. Thus Ernie’s total producer surplus is $3 + $1 = $4, which is thearea of A in the figure.c. When the price of a bottle of water rises from $4 to $6,Ernie sells three bottles of water, an increase of one.His producer surplus consists of both areas A and B inthe figure, an increase by the amount of area B. He gets producer surplus of $5 from the first bottle ($6 priceminus $1 cost), $3 from the second bottle ($6 priceminus $3 cost), and $1 from the third bottle ($6 priceminus $5 price), for a total producer surplus of $9.Thus producer surplus rises by $5 (which is the size of area B) when the price of a bottle of water rises from$4 to $6.6. a. From Ernie’s supply schedule and Bert’s demandschedule, the quantity demanded and supplied are:Only a price of $4 brings supply and demand intoequilibrium, with an equilibrium quantity of two.b. At a price of $4, consumer surplus is $4 and producersurplus is $4, as shown in Problems 3 and 4 above. Total surplus is $4 + $4 = $8.c. If Ernie produced one less bottle, his producer surpluswould decline to $3, as shown in Problem 4 above. IfBert consumed one less bottle, his consumer surpluswould decline to $3, as shown in Problem 3 above. Sototal surplus would decline to $3 + $3 = $6.d. If Ernie produced one additional bottle of water, hiscost would be $5, but the price is only $4, so hisproducer surplus would decline by $1. If Bert consumedone additional bottle of water, his value would be $3,but the price is $4, so his consumer surplus woulddecline by $1. So total surplus declines by $1 + $1 = $2.7. a. The effect of falling production costs in the market forstereos results in a shift to the right in the supplycurve, as shown in Figure 11. As a result, theequilibrium price of stereos declines and theequilibrium quantity increases.Figure 11b. The decline in the price of stereos increases consumersurplus from area A to A + B + C + D, an increase in the amount B + C + D. Prior to the shift in supply, producer surplus was areas B + E (the area above the supply curve and below the price). After the shift in supply,producer surplus is areas E + F + G. So producer surplus changes by the amount F + G – B, which may be positiveor negative. The increase in quantity increases producer surplus, while the decline in the price reduces producer surplus. Because consumer surplus rises by B + C + D andproducer surplus rises by F + G – B, total surplusrises by C + D + F + G.c. If the supply of stereos is very elastic, then the shiftof the supply curve benefits consumers most. To take the most dramatic case, suppose the supply curve werehorizontal, as shown in Figure 12. Then there is noproducer surplus at all. Consumers capture all thebenefits of falling production costs, with consumersurplus rising from area A to area A + B.Figure 128. Figure 13 shows supply and demand curves for haircuts.Supply equals demand at a quantity of three haircuts and a price between $4 and $5. Firms A, C, and D should cut the hair of Ellen, Jerry, and Phil. Oprah’s willingness to pay is t oo low and firm B’s costs are too high, so they do not participate. The maximum total surplus is the area between the demand and supply curves, which totals $11 ($8 value minus $2 cost for the first haircut, plus $7 value minus $3cost for the second, plus $5 value minus $4 cost for the third).Figure 139. a. The effect of falling production costs in the market forcomputers results in a shift to the right in the supply curve, as shown in Figure 14. As a result, theequilibrium price of computers declines and theequilibrium quantity increases. The decline in the price of computers increases consumer surplus from area A to A + B + C + D, an increase in the amount B + C + D.Figure 14 Figure 15Prior to the shift in supply, producer surplus was areasB + E (the area above the supply curve and below theprice). After the shift in supply, producer surplus isareas E + F + G. So producer surplus changes by theamount F + G – B, which may be positive or negative.The increase in quantity increases producer surplus,while the decline in the price reduces producer surplus.Because consumer surplus rises by B + C + D and producersurplus rises by F + G – B, total surplus rises by C +D + F + G.b. Because typewriters are substitutes for computers, thedecline in the price of computers means that peoplesubstitute computers for typewriters, shifting thedemand for typewriters to the left, as shown in Figure15. The result is a decline in both the equilibriumprice and equilibrium quantity of typewriters. Consumersurplus in the typewriter market changes from area A + Bto A + C, a net change of C – B. Producer surpluschanges from area C + D + E to area E, a net loss of C +D. Typewriter producers are sad about technologicaladvances in computers because their producer surplusdeclines.c. Because software and computers are complements, thedecline in the price and increase in the quantity ofcomputers means that the demand for software increases,shifting the demand for software to the right, as shownin Figure 16. The result is an increase in both theprice and quantity of software. Consumer surplus in thesoftware market changes from B + C to A + B, a netchange of A – C. Producer surplus changes from E to C +D + E, an increase of C + D, so software producersshould be happy about the technological progress incomputers.Figure 16d. Yes, this analysis helps explain why Bill Gates is onethe world’s richest people, because his companyproduces a lot of software that is a complement withcomputers and there has been tremendous technologicaladvance in computers.10. a. With Provider A, the cost of an extra minute is $0.With Provider B, the cost of an extra minute is $1.b. With Provider A, my friend will purchase 150 minutes [=150 – (50)(0)]. With Provider B, my friend wouldpurchase 100 minutes [= 150 – (50)(1)].c. With Provider A, he would pay $120. The cost would be $100 with Provider B.Figure 17d. Figure 17 shows the friend’s demand. With Provider A,he buys 150 minutes and his consumer surplus is equal to(1/2)(3)(150) – 120 = 105. With Provider B, hisconsumer surplus is equal to (1/2)(2)(100) = 100.e. I would recommend Provider A because he receives greater consumer surplus.11. a. Figure 18 illustrates the demand for medical care.If each procedure has a price of $100, quantity demandedwill be Q1 procedures.曼昆微观经济学课后练习英文答案(第七章)Figure 18b. If consumers pay only $20 per procedure, the quantitydemanded will be Q2 procedures. Because the cost tosociety is $100, the number of procedures performed istoo large to maximize total surplus. The quantity thatmaximizes total surplus is Q1 procedures, which is lessthan Q2.c. The use of medical care is excessive in the sense thatconsumers get procedures whose value is less than thecost of producing them. As a result, the economy’stotal surplus is reduced.d. To prevent this excessive use, the consumer must bearthe marginal cost of the procedure. But this wouldrequire eliminating insurance. Another possibility wouldbe that the insurance company, which pays most of themarginal cost of the procedure ($80, in this case) coulddecide whether the procedure should be performed. Butthe insurance company does not get the benefits of theprocedure, so its decisions may not reflect the value tothe consumer.151 / 31© 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.。

国际经济学第九版答案【篇一：国际经济学第九版英文课后答案第13 单元】> balance of paymentsoutline13.1 introduction13.2 balance of payments accounting principles 13.2a debitsand credits 13.2b double-entry bookkeeping13.3 the international transactions of the united states casestudy 13-1: the major goods exports and imports of the unitedstates13.4 accounting balances and disequilibrium in internationaltransactions13.5 the postwar balance of payments of the united statescase study 13-2: the major trade partners of the united statescase study 13-3: the u.s. trade deficit with japancase study 13-4:the exploding u.s. trade deficit with china13.6 the international investment position of the unitedstatescase study 13-5: the united states as a debtor nationappendix: a13.1 the imf method of reporting internationaltransactionsa13.2 the case of the missing surplusbalance of paymentscapital account credittransactionsautonomous transactions debit transactionsaccommodating transactions capitalinflow officialreserve account capital outflowofficial settlements balancedouble-entry bookkeeping deficit in the balance ofpaymentsunilateral transferssurplus in the balance ofpayments statistical discrepancy international investmentposition current account1. in the first lecture, i would cover sections 1 and 2a. theaverage student usually finds the meaning of capital inflowsand outflows particularly difficult to understand. therefore, iwould pay special care in presenting the material in section 2a.i would also assign problems 1 to 8. 2.in the second lecture, iwould cover section 2b and go over problems 1-8.i wouldpresent sections 3 and 4 in the third lecture, and stress themeaning and measurement of balance of payments deficitsand surpluses.sections 5 and 6 (which are mostly descriptiveand not difficult) could be left for studentsto do on their own so that the chapter could still be covered in three lectures. 1. a.the u.s. debits its current account by $500 (for the merchandise imports) and credits capital by the same amount (for the increase in foreign assets in the u.s.).the u.s. credits capital by $500 (the drawing down of its bank balances in london, a capital inflow) and debits capital by an equal amount (to balance the capital credit that the u.s. importer received when the u.k. exporter accepted to be paid in three months).the u.s. is left with a $500 debit in its current account and a net credit balance of $500 in its capital account.2. a).the u.s. debits unilateral transfers by $100 and credits capital by the same amount.b).the u.s. credits its current account by $100 and debits capital by the same amount.c).the debit of $100 in unilateral transfers and the credit of $100 in current account.3. a).the same as 2a.the net result is the same, but the transaction in part a of this problem refers to tied aid while transactions a and b in problem 2 do not.4. the u.s. debits capital account by $1,000 (for the purchase of the foreign stock by the u.s. resident) and also credits the capital account (for the drawing down of the u.s. resident bank balances abroad) by the same amount.5. the u.s. credits its current account by $100 and debits its capital account by the same amount.6. the u.s. credits its capital account by $400 (for the purchase of the u.s. treasury bills by the foreign resident) and debits its capital account (for the drawing down of the foreign residents bank balances in the united states) for the by the same amount.7. the u.s. debits its current account by $40 for the interest paid, debits its capital account by $400 (for the capital outflow for the repayment of the repayment of the principal to the foreign investors by the u.s. borrower), and then credits its capital account by $440 (the increase in foreign holdings of u.s. assets, a credit).8. a). the u.s. credits its capital account by $800 and debits its official reserves account by the same amount.b). the official settlements balance of the u.s. will improve (i.e., the u.s. deficit will fall or its surplus will rise) by $800.where values are in billions of dollars and a negative balance represents a deficit while apositive balance a surplus in the balance of payments. b. because until 1972, we had a fixed exchange rate system, but from 1973 we had a managed floating exchange rate system. under the latter, the balance of payments only measures the amount of official intervention in foreign exchange markets. 9.see the july issue of the survey of current business for the most recent year.10.see the july issue of the survey of current business for the most recent year.11.see the july issue of the survey of current business for the most recent year.12. see the july and november issues of the survey of current business for the most recent year.13.see the balance of payments statistics yearbook for the most recent year. app. 1. the major difference between the way the united states keeps its balance of payments and the international monetary fund method is in the way they deal with international capital movements. the united states records international capital movements as increases in u.s.-owned assets abroad and foreign-owned assets in the united states, subdivided into government and private. the international monetary fund includes international capital flows into a financial account, which is subdivided into direct investments, portfolio investments assets and liabilities, and other investment assets and liabilities.2. see the table in april and october issue of the imfs world economic outlook for the most recent year.1. which of the following is false?a. a credit transaction leads to a payment from foreignersb.a debit transaction leads to a payment to foreigners *c. a credit transaction is entered with a negative signd. double-entry bookkeeping refers to each transaction entered twice.2. which of the following is a debit?a. the export of goodsb. the export of services*c. unilateral transfers given to foreigners d. capital inflows 3. capital inflows:a. refer to an increase in foreign assets in the nationb. referto a reduction in the nations assets abroad c. lead to apayment from foreigners *d. all of the above4. when a u.s. firm imports goods to be paid in three monthsthe u.s. credits:a. the current accountb. unilateral transfers *c. capitald. official reserves5. the receipt of an interest payment on a loan made by a u.s.commercial bank to a foreign resident is entered in the u.s.balance of payments as a:a. credit in the capital account *b. credit in the currentaccount c. credit in official reserves d. debit in unilateraltransfers6. the payment of a dividend by an american company to aforeign stockholder represents:a. a debit in the u.s. capital accountb. a credit in the u.s.capital accountc. a credit in the u.s. official reserve account *d. a debit in theu.s. current account7. when a u.s. firm imports a good from england a pays for itby drawing on its pound sterling balances in a london bank,the u.s. debits its current account and credits its:a. official reserve accountb. unilateral transfers accountc.services in its current account *d. capital account8. when the u.s. ships food aid to a developing nation, the u.s.debits:*a. unilateral transfers b. services c. capitald. official reserves9. when the resident of a foreign nation (1) sells a u.s. stockand (2) deposits the proceeds in a u.s. bank, the u.s.:a. credits capital for (1) and debits capital for (2)b. creditsthe current account and debits capital c. debits capital andcredits official reserves*d. debits capital for (1) and credits capital for (2)10. when a u.s. resident (1) purchases foreign treasury billsand pays by (2) drawing down his bank balances abroad, theu.s.:【篇二：国际经济学第九版英文课后答案第9 单元】>(core chapter)nontariff trade barriers and the new protectionism outline9.1 introduction9.2 import quotas9.2a effects of an import quota9.2b comparison of an import quota to an import tariff9.3 other nontariff barriers and the new protectionism 9.3a voluntary export restraintsstates9.3b technical, administrative, and other regulations9.3c international cartels9.3d dumping9.3e export subsidies9.4 the political economy of protectionism9.4a fallacious and questionable arguments for protection 9.4b infant-industry and other qualified arguments for protection9.4c who gets protected?welfare effects on the u.s. economy of removing all import restraintsrestraints9.5 strategic trade and industrial policies9.5a strategic trade policy9.5b strategic trade and industrial policies with game theory 9.5c the u.s. response to foreign industrial targeting and strategic trade policy9.6 history of u.s. commercial policy9.6a the trade agreements act of 19349.6b the general agreements on tariffs and trade (gatt)9.6c the 1962 trade agreements act and the kennedy round 9.6d the trade reform act of 1974 and the tokyo round9.6e the 1984 and 1988 trade acts9.7 the uruguay round and outstanding trade problems 9.7a the uruguay round9.7b outstanding trade problemsbenefits from a “likely ”doha scenario appendix: a9.1 centralized cartels a9.2 international price discriminationa9.3 tariffs, subsidies and domestic goalsquota smoot-hawley tariff act of 1930 nontariff trade barrier (ntbs)trade agreements act of 1934new protectionism most-favored-nation principle voluntary export restraints (vers) bilateral trade technical, administrative, and general agreement on tariff and other regulations trade (gatt)international cartel multilateral trade negotiationsdumpinginternational trade organization (ito) persistent dumping peril-point provisionspredatory dumping escape clausesporadic dumping national security clausetrigger-price mechanismtrade expansion act of 1962export subsidies trade adjustment assistance (taa) export- import bank kennedy roundforeign sales corporationstrade reform act of 1974countervailing duties (cvds) tokyo roundscientific tariff trade and tariff act of 1984infant-industry argumentomnibus trade and competitiveness act of 1988strategic trade policy uruguay roundindustrial policy world trade organization (wto)game theoryglobalization anti-globalization movement1. this is an important core chapter examining some of the most recentdevelopments in international trade policy.2. i would cover sections 1 and 2 in lecture 1. i would pay particular attention tofigure 9-1, which examines the partial equilibrium effects of an import quota.3. i would cover section 3 in lecture 2. here i would clearly explain the differencebetween a regular import quota and a voluntary export restraint. i would alsoclearly explain dumping and figure 9-2 (which deals with export subsidies). the five case studies serve to highlight the theory and show the relevance of thetheory in todays world.4. i would cover section 4 in lecture 3. here i would give special attention to the。

国际经济学作业答案第七章C h a p t e r7I n t e r n a t i o n a l F a c t o r M o v e m e n t sMultiple Choice Questions1. Which of the following differs in its essential analytical framework?(a) International trade in goods(b) International conflict resolution(c) International trade in services(d) International trade in factors of production(e) International borrowing and lendingAnswer: B2. The slope of the production function measures(a) the physical increase in output as country grows.(b) the dollar-value increase in output as a country grows.(c) the increase in number of workers as immigration proceeds.(d) the marginal product of labor.(e) the marginal product of capital.Answer: D3. International free labor mobility will under all circumstances(a) increase total world output.(b) improve the economic welfare of everyone.(c) improve the economic welfare of workers everywhere.(d) improve the economic welfare of landlords (or capital owners) everywhere.(e) None of the above.Answer: E4. If the world attained a perfect Heckscher-Ohlin modelequilibrium with trade, then(a) workers in the labor abundant country would migrate to the capital abundant country.(b) workers in the labor abundant country would wish to migrate to the capital abundantcountry.(c) workers in the labor abundant country would have no desire to migrate to the capitalabundant country.(d) workers in the capital abundant country would wish to migrate to the labor abundantcountry.(e) workers in the capital abundant country would migrate to the labor abundant country.Answer: C5. During the mass migration period of late 19th-early 20th centuries,(a) wages rose in the origin countries and fell in the destination countries.(b) wages fell in the origin countries and rose in the destination countries.(c) wages generally rose faster in the origin countries.(d) wages generally rose faster in the destination countries.(e) wages generally fell faster in the origin countries.Answer: C6. International borrowing and lending may be interpreted as one form of(a) intermediate trade.(b) inter-temporal trade.(c) trade in services.(d) unrequited international transfers.(e) None of the above.Answer: B7. The relative price of future consumption is(a) the interest rate.(b) unknown at any given time.(c) the real interest rate.(d) the relative interest rate.(e) None of the above.Answer: C8. A country that has a comparative advantage in future production of consumption goods(a) will tend to be an international borrower.(b) will tend to have low real interest rates.(c) will tend to be an international investor or lender.(d) will tend to have good work ethics.(e) None of the above.Answer: A9. A U.S. multinational corporation(a) has a controlling share in a foreign subsidiary and is not itself foreign controlled.(b) is foreign controlled and has no controlling share in a foreign company.(c) has a controlling share in a foreign subsidiary and may itself be foreign controlled by aforeign company.(d) is a U.S. company whose major markets are outside the United States.(e) None of the above.Answer: C10. Why a good is produced in two different countries is known as the question of(a) internalization.(b) vertical integration.(c) exploitation.(d) location.(e) None of the above.Answer: D11. Internalization deals with the question(a) why workers prefer to work indoors(b) internationalization(c) why components are produced by one firm rather than by many.(d) Why a good is produced in two different countries(e) None of the aboveAnswer: C12. The home location of mo st of the world’s large multinational companies is(a) North America and Europe.(b) North America and Asia.(c) Europe and South America.(d) Europe and Asia.(e) None of the above.Answer: A13. Which of the following best refers to the outright construction or purchase abroad ofproductive facilities by domestic residents?(a) Foreign direct investment(b) Portfolio Investment(c) Short-term capital investment.(d) Long-term capital investment(e) None of the above.Answer: A14. Most direct investment in the United States has come from(a) Japan.(b) Canada.(c) Western Europe.(d) South America.(e) Asia.Answer: C15. Most U.S. direct foreign investment occurs in(a) communications.(b) agriculture.(c) petroleum.(d) manufacturing.(e) None of the above.Answer: D16. Most foreign direct investment in the United States occurs in(a) communications.(b) agriculture.(c) petroleum.(d) manufacturing.(e) None of the above.Answer: D17. Multinational corporations may provide benefits to their home countries for the followingreasons except which one?(a) Secure raw materials for the source country(b) Allow for exports of products, which involve company-specific trade secrets(c) Allow domestic firms to secure timely deliveries of commodities or products, which do notenjoy a stable or deep market internationally(d) Shift home country technology overseas via licensing(e) None of the above.Answer: D18. Trade analysis involving multinational corporations differs from our conventional tradeanalysis because multinational corporation analysis involves(a) absolute cost differentials rather than comparative cost differentials.(b) the international movement of factor inputs as well as that of finished goods.(c) purely competitive markets rather than imperfectly competitive markets.(d) portfolio investments rather than direct foreign investment.(e) None of the above.Answer: B19. Direct foreign investment may take any of the following forms except(a) investors buying bonds of an existing firm overseas.(b) the creation of a wholly owned business overseas.(c) the takeover of an existing company overseas.(d) the construction of a manufacturing plant overseas.(e) None of the above.Answer: A20. Which of the following could logically explain whyforeign direct investment might beattracted to the United States?(a) U.S. wage rates exceeding the productivity of U.S. labor(b) U.S. price ceilings that hold down the price of energy(c) Especially high price/earning ratios associated with the stock of U.S. firms(d) Anticipations of future reductions in U.S. non-tariff barriers(e) None of the above.Answer: B21. Multinational corporations(a) increase the transfer of technology between nations.(b) make it harder for nations to foster activities of comparative advantage.(c) always enjoy political harmony in host countries in which their subsidiaries operate.(d) require governmental subsidies in order to conduct worldwide operations.(e) None of the above.Answer: A22. American labor unions have recently maintained that U.S. multinational corporations havebeen(a) exporting American jobs by investing overseas.(b) exporting American jobs by keeping investment in the United States.(c) importing cheap foreign labor by shifting U.S. investment overseas.(d) importing cheap foreign workers by keeping U.S. investment at home.(e) None of the above.Answer: A23. Multinational corporations(a) always produce primary goods.(b) always produce manufactured goods.(c) always produce services.(d) may produce primary or manufactured goods.(e) None of the above.Answer: D24. ___________ refers to highly educated and skilled people who migrate from poor developingcountries to wealthy industrial countries.(a) Direct investment(b) Portfolio investment(c) Transfer pricing(d) Brain drain(e) None of the above.Answer: D25. International labor mobility(a) leads to wage convergence by raising wages in destination country and lowering in sourcecountry.(b) is in accordance with the specific factors model(c) is in accordance with the Heckscher-Ohlin factor proportions model.(d) leads to wage convergence by raising wages in source and lowering them in destinationcountry.(e) is in accordance with scale economy model.Answer: D26. In theory, labor mobility is(a) a complete complement to trade flows.(b) a partial complement to trade flows.(c) a complete substitute for trade flows.(d) a partial substitute for trade flows.(e) None of the above.Answer: C27. In practice, international labor mobility is(a) a complete complement to trade flows.(b) a partial complement to trade flows.(c) a complete substitute for trade flows.(d) a partial substitute for trade flows.(e) None of the above.Answer: D28. If one observes that Japan was traditionally a net foreign lender, one could conclude thatrelative to its international trade and financial partners(a) Japan’s inter-temporal production possibilities are biased toward future consumption.(b) Japan’s inter-temporal production possibilities are larger than that of the other countries.(c) Japan’s inter-temporal production possibilities are biased toward present consumption.(d) Japan’s inte r-temporal production possibilities are not biased.(e) None of the above.Answer: C29. Rapidly growing developing countries tend to be borrowers on the international capital markets.From this information we may surmise that they have acomparative advantage in(a) capital goods.(b) future income.(c) disposable income.(d) consumer goods.(e) present income.Answer: B30. It may be argued that theoretically, international capital movements(a) tend to hurt the donor countries.(b) tend to hurt the recipient countries.(c) tend to hurt labor in donor countries.(d) tend to hurt labor in recipient countries.(e) None of the above.Answer: C31. Transactions between branches of the same multinational corporations account for ________of U.S. imports.(a) one quarter(b) one third(c) one half(d) three quarters(e) allAnswer: C32. The shift of labor-intensive assembly operations from the United States to Mexicanmaqiladora may be best explained in terms of a theory of(a) location.(b) vertical integration.(c) horizontal integration.(d) internalization.(e) None of the above.Answer: A33. When comparing the United States to the United Kingdom, between 1985 and 1990, therelative growth of foreign-owned firms in manufacturing(a) grew faster in the U.K., whose proportion of foreign-owned firms is larger.(b) grew faster in the U.S., whose proportion of foreign-owned firms is larger.(c) grew faster in the U.S., whose proportion of foreign-owned firms is smaller.(d) grew faster in the U.K., whose proportion of foreign-owned firms is smaller.(e) None of the above.Answer: C34. The inflow of foreign direct investment into the United States has always been perceived(a) with trepidation.(b) with resentment.(c) with equanimity.(d) with satisfaction.(e) None of the above.Answer: E35. The purchase by Germany’s Daimler-Benz of America’s Chrysler corporation is generallyviewed as(a) direct foreign investment typical of trends in the 1980s.(b) a capital outflow from the United States, since Daimler-Benz “milked” the assets ofChrysler.(c) a major success story of globalization.(d) an example of international vertical integration.(e) None of the above.Answer: E36. In a typical short-run production function, as labor increases(a) the marginal product of capital decreases.(b) the overall product of labor decreases.(c) the average product of labor decreases.(d) the marginal product of labor decreases.(e) None of the above.Answer: D37. American labor unions accuse U.S. multinational corporations of all except which?(a) They enjoy unfair advantages in taxation.(b) They export jobs by shifting technology overseas.(c) They export jobs by shifting investment overseas.(d) They operate at output levels where scale economies occur.(e) None of the above.Answer: DEssay Questions1. The Heckscher-Ohlin model is famous for being elegant and mathematically sophisticated, yetfailing to describe reality. One manifestation of this fact is Trefler’s Case of Missing Trade.Explain what exactly is missing. In what sense is it missing? How would you explain why it is missing? How can a relaxation of the identical production functions explain the case of themissing trade?Answer: Trefler demonstrated that the actual volume of world trade is significantly less than that which would be predicted by the Heckscher-Ohlin model. One explanation is thatNorth-South trade is especially less than would be predicted by a factor proportions model. If technologies differ in the poorer countries, then it is possible that the cost ofproducing a product, which uses relatively much of their abundant factor may still behigher than the cost of producing it in the other country.2.Factor-intensity reversals describe a situation in which the production of a product may beland-intensive in one country, and relatively labor intensive in another (at given relative wage levels). For example, cotton may be land intensive in the U.S., and labor intensive in Egypt where land is relatively scarce and expensive. Suppose factor-intensity reversals were common.How would that affect the conclusion that a country in which land is relatively scarce will not be the country witha comparative advantage in the land-intensive product?Answer: The answer here is straightforward (though it has various interesting implications).In this case we cannot define or identify a product in terms of its relative factorintensity (at all or any relative wage level). Therefore, the Heckscher-Ohlin Theoremis ipso-facto inapplicable.3. Why is it that North-South trade in manufactures seems to be consistent with the results orexpectations generated by the factor-proportions theory of international trade, whereas North-North trade is not?Answer: There is a clear difference in relative factor availabilities between North and South countries, no matter how we define and measure the factors of production. Hence, the factor-proportions theory of trade may be sensibly expected to explain the pattern(though not the volume) of trade between these two groups of countries. However,the North North trade partners do not vary significantly in their relative factoravailabilities, so that other forces, such as scale economies play a relatively largerole in determining trade patterns.4. One of the commonly used assumptions in deriving the Heckscher-Ohlin model is that tastesare homothetic, or that if the per capita incomes were the same in two countries, theproportions of their expenditures allocated to each product would be the same as it is in theother country. Imagine that this assumption is false, and that in fact, the tastes in each country are strongly biased in favor of the product in which it has a comparative advantage. How would this affect the relationship between relative factor abundance between the two countries, and the nature (factor-intensity) of the product each exports? What if the taste bias favored the imported good?Answer: If in fact national tastes were strongly biased in favor of the product in which the country enjoyed a comparative advantage, then we would expect a bias in favor ofrejecting the Heckscher-Ohlin Theorem in actual trade data. The engine driving theH-O model is that a country should be expected to have a relatively low cost ofproducing the good in which it has a comparative advantage. However, therespective demand forces would tend to raise the price of this good, so that theexpected pattern would not generally be observed. However, if the tastes were biasedin favor of the imported good, then the predictions of the Heckscher-Ohlin Theoremwould be expected to be generally observed.5. Why do you suppose that South-South trade does not conform in volume, but does conform inpattern with expectations generated by the Heckscher-Ohlin model?Answer: The pattern of trade is generally observed to conform to the Heckscher-Ohlin models expectations. That is, the developing countries tend to export labor-intensive goods, such as textiles, and import capital-intensive goods such as machinery. The volumehowever is quite lower than what would be expected from the Neoclassical model.There are many possible reasons, such as financial crises necessitating premia in thefinancing of this trade.6. It has been argued that even if intra-European Union labor mobility were to be completelyremoved, one should not expect to observe massive, or evenlarge reallocations of populations with the E.U. Discuss Answer: Theoretically, just as completely free trade consistent with Heckscher-Ohlin model (with no complete specialization) is associated with factor price equalization; so doescompletely free labor mobility. It therefore follows that if intra E.U. trade flourishes,as any restraints on trade there are abolished, the economic incentive for labormobility will be removed. Since language and cultural differences remain, we wouldexpect populations to tend to stay where they are.Quantitative/Graphing Problems1. In Home and Foreign there are two factors of production, land and labor, used to produce onlyone good. The land supply in each country and the technology of production are exactly the same. The marginal product of labor in each country depends on employment as follows:Number of Workers Employed Marginal Product of Last Worker1 302 293 284 275 266 257 248 239 2210 2111 20Initially there are 11 workers employed in Home but only 3 workers in Foreign. Find the effect of free movement of labor from the high wage to the low wage country. When such economic migration ceases, what will be the levels of production, real wages and the income oflandowners in each country?Answer: The total production in the world will increase, since the addition to production (the marginal product of labor) in the target country is larger for each worker than theloss of production (also the marginal product of workers) in the emigration country.The real wages will rise in the emigration country and fall in the immigrationcountry. Landlord incomes will rise in the immigration country and fall in theemigration country.2. Suppose Australia, a land (K)-abundant country and Sri-Lanka, a labor(L)-abundant countryboth produce labor and land intensive goods with the same technology. Following the logic of the Heckscher-Ohlin model from Chapter 4, what will be the incentive for migration once trade is established between these two countries? Now, suppose that a tariff by one country creates an incentive for labor migration. From which country to which country will be the migration?Explain how you arrived at your answer.Answer: Once trade is established, there is no longer any incentive for (economic-based) immigration, since the real wageswill be equalized in both. If a tariff is establishedin Australia, then the price of the labor intensive good will be higher in Australia, aswill be the marginal product of labor and hence the real wage of workers there.Hence, workers will immigrate from Sri-Lanka to Australia until the two domesticprices are equalized.3. Use the diagram below derived from Figure 4-4 to identify the pre-trade situation for Australiaand Sri-Lanka, as discussed in question 2 above. Where on the K/L axis will you find each of the two countries? Which of the two countries has a higher relative wage, w/r? Which product is the labor intensive, and which is the land intensive one? Show where the relative price of cloth to food will be found once trade opens between these two countries. Show where the relative wages of each will appear.Answer: You will find Sri-Lanka to the left of Australia on the K/L axis.Australia has a higher relative wage.Food is the land intensive product.The relative price P C/P F is found between the two autarkic prices.The post trade relative wage is between the two autarkic ones on the vertical axis. 4. Using the figure above from question 3, demonstrate what happens to the composition ofproduction (that is quantity of cloth per 1 unit of food) in Australia once trade is established between the two countries. Which country will export cloth? What happens to the relative income of workers in Australia as a result of trade? Does itincrease or decrease? Would land owners in Australia lobby for or against free trade? Would land owners in Australia lobby for or against free admittance of immigrant workers?Answer: The proportion of food to cloth will increase in the production of Australia Sri Lanka will export cloth. The relative (and real) incomes of workers will fall in Australia asa result of trade. Land Owners in Australia should lobby in favor of trade. Theywould also lobby for free labor mobility (of workers into Australia), since themarginal product of labor is high, the owners of land have much (Ricardian) rents togain from an inflow of workers.5. Imagine that the relative capital abundance of Australia was so much greater than that of Sri-Lanka, that we would have to locate Australia far to the right on the K/L axis. If this were so far to the right that there was no area of overlap on the w/r axis, then what product would Australia export? Is this answer different from that in question 4 above? Will the relativewages as calculated now be the same or different from those calculated in question 4?Answer: Australia would still export food, which is the same as in question 4. As a result of trade, wages will fall in Australia and will rise in Sri-Lanka. However, in this case,the wages in Australia will remain higher than in Sri-Lanka, creating an incentive formigration from the latter to the former country.。

Text comprehensionI. DII. FFTTFIII.1. hit by lightning.2. died of terror3. soothing conversation4. One should die peacefully.5. so anyone could use it to hear the reassurance voice of a loved one.6. their lives had intensely touched hers.7. kindness is not just to be paid back but to be passed on to others.IV.1. I tried to comfort her by saying that we would manage to overcome it / get it over / tide it over.2. After experiencing such an incident, the girl’s visit to London would seem much l ess exciting in comparison.3. The young woman, who was as confident as that businessman, must have noticed my fear.4. The young businessman was sorry that…5. I am very grateful to …Structural analysis of the text1. Yes. It is explicitly stated at t he end of the text: …not to pay back the kindness but to pass it on.2. scared and most likely looking pale;worried, but till trying to encourage the young girllooked worried, but confidentas confident as the young businessman, tried to comfort the author, offered her cell phone to anyone who wanted to make a callgenerously offered her box of chocolate to the businessmancalm; no one panicked; no one screamed.Vocabulary1. Phrase practiceI. strapped in= having the seat belt fastened on 系紧安全带2. make a connecting flight= catch another flight to continue the journey 转机3. he was done= he had completed his task (announcement)4. pulled myself together =controlled my feelings and began behaving calmly again 冷静，振作5. make it= land successfully and safely 度过难关6. be indebted to= be very grateful to 感激于II.1. witnessed;2. figured;3. lightning;4. lunged;5. confided;6. blessed;7. indiscriminate;8. terra firma;9. sure; 10. creature.III.1. Bswerve: to suddenly and violently change direction / turn2. Aagainst: opposite to; contact; press / on3. Cstricken: (adj.) passive voice / striking: (adj.) subjective / struck: the past tense (not adj.)4. Breassuring: feel less worried / sure / certain about something5. Dequal (adj.): same in position or importance and deserving the same treatment / same equivalent: adj. same in amount / n. sth or sb equal to anothersimilar: same with little difference6. Dsmell: to breathe in through your nose to feelperfume / taste / freshness: being full of energy and enthusiasm7. Cscreech: wheels make a high unpleasant noisescream / jolt / cling8. Bfateful: have an important, and often very bad, effect on future events or one’s fate. lucky / indebted / glamorousIV.1.somehow; somewhat; somewhat; somehow2. feared; panic; feared; panicked3. Hope; hope; anticipating; anticipate4. surviving; survive; live;liveV. Synonym / Antonym1. Synonyms: open, unlock2. Antonyms: unconfidently, despairingly3. Synonyms: thinking, imagining4. Antonyms: brave, bold5.Synonyms: unselective, uncritical6. Antonyms: enjoyable, comfortable, pleasant, agreeable7.Synonyms: grumbling8. Antonyms: lightly, barely, hardly, scarcelyVI. Word derivation1. ungrateful2. shortage3. unfortunately4. invaluable5. lengthen6. destruction7. timely8. rustless.1. grateful (adj.) 感激的，感谢的ungrateful (adj.) 忘恩负义的，讨人厌的2. short (adj.) 短的，矮的shortage (n.) 不足，缺少shorten (v.) 弄短，变短3. fortune (n.) 财产，运气，命运fortunately (adv.) 幸运地，幸亏fortunate (adj.) 幸运的，侥幸的unfortunately (adv.) 不幸地unfortunate (adj.) 不幸的，令人遗憾的，不成功的4. value (n.v.)价值，重要性，价格valuable (adj.) 贵重的，有价值的invaluable (adj.) 无价的, 价值无法衡量的valueless (adj.) 无价值的，不值钱的，不足道的unvalued (adj.) 不受重视的，无价值的，不足道的5. long (adj. adv. vi.) 长的，很久的，冗长的short length (n.) 长，长度，距离shortagelengthen (v.) 加长，延长shorten6. destroy (v.) 破坏，摧毁，消灭，杀死destruction (n.) 破坏，毁灭，破坏者destructive (adj.) 破坏性的，有害的7. time (n.) 时间，次数，倍timely (adj.) 及时的，适时的，及时的untimely (adv. adj.) 不合时宜的8. rust (n.) 锈，生锈rusty (adj.) 生锈的，锈色的，荒废的，迟钝的rustless (adj.) 无锈的，不生锈的GrammarI.1.… would have died…2.2. She must have seen how scared I was and reached over.3. I shouldn't be eating them anyhow.4. I could hear small pockets of soothing conversation everywhere.5. ..they would all have to go through someday.6. ... Wish I could thank them for the many acts of kindness I witnessed and received.7. I am indebted to my fellow passengers and wish I could pay them back.8. I was sure that even if I survived the plane crash, I'd have a couple of broken fingers from all the TLC.II.1. He may know the answer. (―May‖ is used to show that something is possible.)2. I am reasonably sure that it was difficult.3. He couldn't have forgotten his appointment. (―Couldn't‖ is used to show that it is impossible.)4.She must be coming tomorrow. (―Must‖ is used to talk about predictability.)5. We ought to help people in need. (―Ought to‖ is used to talk about obligation.)6. Can / May I say something? (permission)7. He may have gone to the museum. (―May‖ is used to show that something is possible.)8. You ought to have apologized. (―Ought to‖ is used to talk about obligation. but you didn’t do it)III. Be going to" and "will"W e use ―will‖ rather than ―be going to‖ to make a prediction based on our opinion or exper ience and ― be going to‖ rather than ―will‖ to make a prediction based on some present evidence. And we use―will‖: a decision when speaking or talking; based on our opinion or experience.―be going to‖: decisions— have already been made; based on present evidence.1. When are you going to start? intention2. I’m sure it is going to rain. prediction3. I’m going to take a few days’ holiday. intention4. When are you going to sell it? intention5. I’m sure there is going to be trouble. prediction6. We are going to have dinner out. intention7. I’m going to watch the news. intention8. We’re going to be late for the party. predictionIV.1. I’m going (Be going to refers to a premeditated intention.)2. I’ll carry (will refers to an unpremeditated inten tion)3. I won’t tell (―won’t‖ here expresses the speaker’s resolution.)4. I’m going to be (―be going to‖ refers to a prediction based on the present symptom, sign or evidence.)5. Are you meeting (The present progressive indicates the future fulfillment of the present plan.)6. it’s going to rain (―be going to‖ refers to a prediction based on the present symptom, sign or evidence.)7. ―Did you post that letter for me?‖ ―Oh, I’m sorry. I completely forgot. I’m going to post it / I’ll post it now.‖Key: I’l l post it (decision made at the moment of speaking)8. ―John, do you want me to take you to the airport?‖ ―No, thanks. Ann is going to take / will take me.‖Key: is going to (previously planned)V. Fill in the blanks with the proper forms of the verbs in brackets.1. had listened2. could3. knew4. had5. were / was6. Didn't have7. knew8. had meantTranslation exercisesI.1. 我踉踉跄跄向座位冲过去时，乘客们抬起头来望着我，满脸惊恐，似乎感到死期已到。

CHAPTER 1*(Core Chapter)INTRODUCTIONOUTLINE1.1 Importance of International EconomicsCase Study 1-1: The Dell and Other PCs Sold in the United States Are All ButAmericanCase Study 1-2: What Is an "American" Car?1.2 International Trade and The Nation's Standard of LivingCase Study 1-3: Rising Importance of International Trade to the United States 1.3 The Major U.S. Trade Partners: The Gravity Model1.4 The Subject Matter of International Economics1.5 Purpose of International Economic Theories and Policies1.6 Current International Economic Challenges1.7 The Globalization Challenge1.8 Organization and Methodology of the BookAppendix: A1.1 Basic International Trade DataA1.2 Sources of Additional International Data and InformationKey TermsInterdependence Adjustment in the balance of payments Gravity model MicroeconomicsInternational trade theory MacroeconomicsInternational trade policy Open economy macroeconomicsNew protectionism International financeForeign exchange markets GlobalizationBalance of payments Anti-globalization movementLecture Guide1. As the first chapter of the book, the general aim here is simply to define the fieldof study of international economics and its importance in today's interdependent world.The material in this chapter can be covered in two classes. I would utilize oneclass to cover Sections 1 to 4 and the second class to cover Sections 5 to 8. Iwould spend most of the second class on Section 6 on the major currentinternational economic challenges facing the United States and the world todayand to show how international economics can suggest ways to solve them. Thisshould greatly enhance students' motivation.Answer to Problems1. a) International economic problems reported in our daily newspapers are likely toinclude:•trade controversies between the United States, Europe, Japan, and China;•great volatility of exchange rates;•Increasing international competition from China and fear of job losses in the United States and other advanced countries.•structural unemployment and slow growth in Europe, and stagnation in Japan;•financial crises in emerging market economies;•restructuring problems of transition economies;•deep poverty in many developing nations in the world.b) Can result in trade restrictions or even a trade war, which reduce the volumeand the gains from trade;•discourage foreign trade and investments, and thus reduce the benefits from trade;•Can result in trade restrictions or even a trade war, which reduce the volume and the gains from trade;•reduces European and Japanese imports and the volume and the benefits from trade;•financial crises in emerging market economies could spread to the United States;•can lead to political instability, which will adversely affect the United States;•can lead to political instability in these countries - which also adversely affect the United States.c) Can result in your paying higher prices for imported products;•lead to great fluctuations in the price of imported products and cost of foreign travel;•Can lead higher prices for imported products and increases the chances that you will have to change jobs;•can lead you to support demands for trade protection in the United States;•can reduce the value of your investments (such as a stocks) in the United States;•can lead to your paying higher taxes for the United States to respond to these threats;•can result in your paying higher taxes to help these nations.2. a) Five industrial nations not mentioned are: Italy, France, Canada, Austria, andIreland.b) See Table 1A.c) Smaller nations, such as Ireland and Austria, are more interdependent than thelarger ones. Note that interdependence was measured by the percentage of thevalue of imports and exports (line 98c and 90c, respectively in IFS) to GDP (line99b).Table 1AEconomic Interdependence asMeasured by Imports and Exports*Source: International Financial Statistics(Washington, D.C., IMF, March 2006).3. a) Five developing nations not mentioned in the text are: Brazil, Pakistan,Colombia, Nepal, and Tunisia.b) See Table 1B.c) In general, the smaller the nation, the greater is its economic interdependence.Note that interdependence was measured by the percentage of the value ofimports and exports (line 98c and 90c, respectively in IFS) to GDP (line 99b).Table 1BEconomic Interdependence asMeasured by Imports and Exports*Source: International Financial Statistics(Washington, D.C., IMF, March 2006).4. Trade between the United States and Brazil is much larger than trade between theUnited States and Argentina. Since Brazil is larger and closer than Argentina, this trade does follow the predictions of the gravity model.5. a) Mankiw’s Economics (4th., 2007) includes the following microeconomicstopics:•The market forces of demand and supply;•elasticity and its application;•the theory of consumer choice;•consumers, producers, and the efficiency of markets;•the costs of production;•firms in competitive markets;•monopoly;•oligopoly;•monopolistic competition;•markets for the factors of production;•the demand for resources;b) Just as the microeconomics parts of your principles text deal with individualconsumers and firms, and with the price of individual commodities and factors of production, so do Parts One and Two of this text deal with production andconsumption of individual nations with nations with and without trade, and withthe relative price of individual commodities and factors of production.c) Mankiw’s Economi cs (4th., 2007) includes the following microeconomics topics:measuring a nation’s income and the cost of living;•production and growth;•savings investment and the financial system;•unemployment and its natural rate;•the monetary system, growth and inflation;•money growth and inflation;•open-economy macroeconomics: basic concepts;• a macroeconomic theory of the open economy;•aggregate demand and aggregate supply;•the influence of monetary and fiscal policy on aggregate demand;•the short-run trade off between inflation and unemployment•five debates over macroeconomic policy.d) Just as the macroeconomics parts of your principles text deal with the aggregatelevel of savings, consumption, investment, and national income, the general price level, and monetary and fiscal policies, so do Parts Three and Four of this textdeal with the aggregate amount of imports, exports, the total international flow of resources, and the policies to affect these broad aggregates.6. a) Consumer demand theory predicts than when the price of a commodity rises(cet. par.), the quantity demanded of the commodity declines.When the price of imports rises to domestic consumers, the quantity demanded of exports can be expected to decline (if everything else remains constant).7. a) A government can reduce a budget deficit by reducing governmentexpenditures and/or increasing taxes.b) A nation can reduce or eliminate a balance of payments deficit by taxingimports and/or subsidizing exports, by borrowing more abroad or lending less toother nations, as well as by reducing the level of its national income.8. a) Nations usually impose restrictions on the free international flow of goods,services, and factors. Differences in language, customs, and laws also hamperthese international flows. In addition, international flows may involve receipts and payments in different currencies, which may change in value in relation to oneanother through time. This is to be contrasted with the interregional flow ofgoods, services, and factors, which face no such restrictions as tariffs and areconducted in terms of the same currency, usually in the same language, and under basically the same set of customs and laws.b) Both international and interregional economic relations involve the overcomingof space or distance. Indeed, they both arise from the problems created bydistance. This distinguishes them from the rest of economics, which abstractsfrom space and treats the economy as a single point in space, in which production, exchange, and consumption take place.9. We can deduce that nations benefit from voluntarily engaging in internationaltrade because if they did not gain or if they lost they could avoid those losses bysimply refusing to trade. Disagreement usually arises regarding the relativedistribution of the gains from specialization in production and trade, but this does not mean that each nation does not gain from trade.10. International trade results in lower prices for consumers but harms domesticproducers of products, which compete with imports. Often those domesticproducers that stand to lose a great deal from imports band together to pressurethe government to restrict imports. Since consumers are many and unorganizedand each individually stands to lose only very little from the import restrictions,governments often give in to the demands of producers and impose some importrestrictions. These topics are discussed in detail in Chapter 9.11. A nation can subsidize exports of the commodity to other nations until it drivesthe competing nation's industry out of business, after which it can raise its priceand benefit from its newly acquired monopoly power.Some economists and politicians in the United States have accused Japan of doing just that (i.e., of engaging in strategic trade and industrial policy at the expense of U.S. industries), but this is a very complex and controversial aspect of tradepolicy and will be examined in detail in Chapter 9.12. a) When the value of the U.S. dollar falls in relation to the currencies of othernations, imports become more expensive for Americans and so they wouldpurchase a smaller quantity of imports.b) When the value of the U.S. dollar falls in relation to the currencies of othernations, U.S. exports become chapter for foreigners and so they would purchase a greater quantity of U.S. exports.Multiple-Choice Questions1. Which of the following products are not produced at all in the United States?*a. Coffee, tea, cocoab. steel, copper, aluminumc. petroleum, coal, natural gasd. typewriters, computers, airplanes2. International trade is most important to the standard of living of:a. the United States*b. Switzerlandc. Germanyd. England3. Over time, the economic interdependence of nations has:*a. grownb. diminishedc. remained unchangedd. cannot say4. A rough measure of the degree of economic interdependence of a nation is given by:a. the size of the nations' populationb. the percentage of its population to its GDP*c. the percentage of a nation's imports and exports to its GDPd. all of the above5. Economic interdependence is greater for:*a. small nationsb. large nationsc. developed nationsd. developing nations6. The gravity model of international trade predicts that trade between two nations is largera. the larger the two nationsb. the closer the nationsc. the more open are the two nations*d. all of the above7. International economics deals with:a. the flow of goods, services, and payments among nationsb. policies directed at regulating the flow of goods, services, and paymentsc. the effects of policies on the welfare of the nation*d. all of the above8. International trade theory refers to:*a. the microeconomic aspects of international tradeb. the macroeconomic aspects of international tradec. open economy macroeconomics or international financed. all of the above9. Which of the following is not the subject matter of international finance?a. foreign exchange marketsb. the balance of payments*c. the basis and the gains from traded. policies to adjust balance of payments disequilibria10. Economic theory:a. seeks to explain economic eventsb. seeks to predict economic eventsc. abstracts from the many detail that surrounds an economic event*d. all of the above11. Which of the following is not an assumption generally made in the study of international economics?a. two nationsb. two commodities*c. perfect international mobility of factorsd. two factors of production12. In the study of international economics:a. international trade policies are examined before the bases for tradeb. adjustment policies are discussed before the balance of paymentsc. the case of many nations is discussed before the two-nations case*d. none of the above13. International trade is similar to interregional trade in that both must overcome: *a. distance and spaceb. trade restrictionsc. differences in currenciesd. differences in monetary systems14. The opening or expansion of international trade usually affects all members of society:a. positivelyb. negatively*c. most positively but some negativelyd. most negatively but some positively15. An increase in the dollar price of a foreign currency usually:a. benefit U.S. importers*b. benefits U.S. exportersc. benefit both U.S. importers and U.S. exportersd. harms both U.S. importers and U.S. exporters16. Which of the following statements with regard to international economics is true?a. It is a relatively new field*b. it is a relatively old fieldc. most of its contributors were not economistsd. none of the above。