〖集锦17套合集〗广东省广州市越秀区2020-2021学年高三下学期摸底考试物理试题含解析

广东省广州市越秀区2020届高三下学期摸底考试数学（理）试题一、选择题：本题共12小题，每小题5分，共60分。

在每小题给出的四个选项中，只有一项是符合题目要求的。

1．已知双曲线221x y m -=的焦距为 （ ）A ．14y x=± B ．12y x=± C．6y x =±D．y x =2．ABC ∆的内角,,A B C 的对边分别为,,a b c。

已知cos sin ,2aB B b c c-===，则B =（ ） A ．34π B ．3π C ．4π D ．6π3．若4cos 5α=-,α是第三象限的角,则1tan21tan 2αα+=-（ ） A ．12-B ．12C ．2D ．-24．若函数()()213log 28f x ax x =++的值域为[)2,-+∞，则()f x 的单调递增区间为（） A ．(),2-∞-B ．(]2,1-C ．[)1,4D ．()4,+∞5．某种植基地将编号分别为1，2，3，4，5，6的六个不同品种的马铃薯种在如图所示的这六块实验田上进行对比试验，要求这六块实验田分别种植不同品种的马铃薯，若种植时要求编号1，3，5的三个品种的马铃薯中至少有两个相邻，且2号品种的马铃薯不能种植在A 、F 这两块实验田上，则不同的种植方法有 ( ) A ．360种B ．432种C ．456种D ．480种6．将函数()sin 23f x x π⎛⎫=+⎪⎝⎭的图象向右平移2π个单位长度得到()g x 图象，则下列判断错误的是（ ）A ．函数()g x 在区间,122ππ⎡⎤⎢⎥⎣⎦上单调递增 B ．()g x 图象关于直线712x π=对称 C ．函数()g x 在区间,63ππ⎡⎤-⎢⎥⎣⎦上单调递减D．()g x图象关于点,03π⎛⎫⎪⎝⎭对称7．执行如图所示的程序框图，若输出的的值等于11，那么输入的的值可以是（）A．121 B．120 C．11 D．108．倾斜角为12π的直线l经过原点与双曲线22221x ya b-=的左、右两支于A B、两点，则双曲线离心率的取值范围为( )A．(62,)-+∞B．(422,)-+∞C．(1,62)-D．(1,422)-9．若,x y满足约束条件210,220,20,x yx yx y-+≤⎧⎪-+≥⎨⎪+-≤⎩则3z x y=-的最大值为( )A．2 B．1 C．0 D．-110．某产品在某零售摊位的零售价x（单位：元）与每天的销售量y（单位：个）的统计资料如下表所示，由表可得回归直线方程ˆˆˆy bx a=+中的ˆ4b=-，据此模型预测零售价为20元时，每天的销售量为（）A．26个B．27个C．28个D．29个11．已知ABC∆中，A，B，C的对边分别是a，b，c，且3b=，33c=，30B=︒，则AB边上的中线的长为( )A．372B．34C．32或372D．34或37212．已知抛物线2:2(0)C y px p =>的焦点为F ，抛物线上一点()2,M m 满足6MF =，则抛物线C 的方程为（ ）A ．22y x =B ．24y x =C ．28y x =D ．216y x = 二、填空题：本题共4小题，每小题5分，共20分。

2023年高考英语模拟试卷注意事项:1．答题前，考生先将自己的姓名、准考证号码填写清楚，将条形码准确粘贴在条形码区域内。

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第一部分（共20小题，每小题1.5分，满分30分）1．The president stood by a window inside the room, ________ I entered, looking over the square.A．where B．into whichC．which D．that2．Perhaps you ________ stop playing computer games now. Y our boss may be turning up in the office at any moment. A．will B．must C．should D．can3．--- I hav e been working for more than 30 years! I’m going to retire next month.--- Really? You don’t look a day 40!A．over B．byC．with D．for4．In the early morning all of us stood at the top of the mountain ___________ east of the city, watching__________burning sun rising.A．/; a B．the; aC．the; the D．/; the5．What you said doesn’t ________ what the police have told us, so we have to find more evidence.A．agree with B．make upC．contribute to D．show off6．One hundred and fifteen Chinese companies hit the newly released Fortune 500 list for 2017, ______ an increase for the 14th straight year, domestic website reported on Thursday.A．to realize B．realizedC．realizing D．having realized7．If I can help , I don’t like working late into the night.A．so B．that C．them D．it8．Fortunately somebody who happened to be passing by called the emergency aid the traffic accident occurred. A．hurriedly B．quickly C．immediately D．shortly9．— Mummy, look at my gloves. I need a new pair.— ________. I bought them for you only a week ago!A．Y ou bet B．You said itC．Y ou don’t say D．You name it10．—It’s so humid these days!—Don’t worry! The rain ________ to stop from tomorrow.A．will expect B．expectsC．will be expected D．is expected11．These remarkable findings suggest the elephants have ________ a memory capacity to make distinctions between human voices.A．built up B．packed up C．brought up D．took up12．It was announced that only when the fire was under control __________to return to their homes.A．the residents would be permittedB．had the residents been permittedC．would the residents be permittedD．the residents had been permitted13．—I heard Mr. Morgan would be here at 4:00 pm. next Thursday.—No, he _____ at that time.A．was boarding B．would be boardingC．will be boarding D．is boarding14．— Do you often come here to have a walk?— No, only _________, because we are much too busy.A．occasionally B．eventuallyC．merely D．frequently15．What the country did _____ the international trade regulations, for which it was widely condemned. A．approved B．violated C．bothered D．interrupted16．______ the students were hearing the exciting news!A．How happily B．What a fun C．What pleasure D．How pleased17．An old lady came to the bus stop only the bus had gone.A．to run ; to find B．running;to find C．and ran ; finding D．running; finding18．．Although it in the desert most of the year, people still live there．A．doesn’t rain B．didn’t rain C．hasn’t rained D．hadn’t rained19．The wors e working conditions we are looking forward to ______ must have attracted the local government’s attention.A．see improved B．seeing improvedC．see improving D．seeing to improve20．Tom finally decided to ________ and give himself up to the police, which allowed him to get away with only a smallfine.A．kill the fatted calf B．face the musicC．see the handwriting on the wall D．be a black sheep第二部分阅读理解（满分40分）阅读下列短文，从每题所给的A、B、C、D四个选项中，选出最佳选项。

2021年广州市越秀区明德实验学校高三语文下学期期末考试试卷及参考答案一、现代文阅读（36分）(一)现代文阅读I(9分)阅读下面的文字，完成下面小题。

5月28日，十三届全国人大三次会议表决通过了《中华人民共和国民法典》。

这意味着，历时五年多的编纂，中国正式迈入“民法典时代”。

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中国特色社会主义进入新时代，人民群众对民主、法治、公平、正义、安全、环境等方面的需要日益增长，编纂一部适应时代发展、符合中国国情、反映人民意愿的民法典，恰逢其时。

尊重科学规律，民法典适应时代发展。

改革开放以来，随着科技进步、生产力水平提高，经济基础和社会结构发生巨大变化，也带来许多新的法律课题，民法典对此作出了明确回应。

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建立一部内涵丰富、体例完整的民法典无异于给行业一度存在的“隐私换便利”灰色地带画上红线，更好地平衡企业与个人的利益关系。

立足本土实践，民法典符合中国国情。

民法典不仅是一个国家经济社会发展的真实写照，也是一个民族精神文化的集中体现。

民法典开宗明义指出“为了保护民事主体的合法权益，调整民事关系，维护社会和经济秩序，适应中国特色社会主义发展要求，弘扬社会主义核心价值观。

2021年广东广州越秀区广州市第二十一中学高三上学期高考模拟数学试卷-学生用卷一、单选题（本大题共8小题，每小题5分，共40分）1、【来源】 2021年广东广州越秀区广州市第二十一中学高三上学期高考模拟第1题5分若z2+i=−i，则z=（）．A. 2−iB. 1−2iC. −1+2iD. −2+i2、【来源】 2021年广东广州越秀区广州市第二十一中学高三上学期高考模拟第2题5分已知集合A={x|x2−3x+a=0}，B={−2,2}，若A∩B={2}，则A∪B=（）．A. {−2,1,2} B. {−2,−1,2} C. {−2,3,2} D. {−2,2}3、【来源】 2021年广东广州越秀区广州市第二十一中学高三上学期高考模拟第3题5分(2 x −√x)6的展开式的常数项为（）．A. −120B. −60C. 120D. 604、【来源】 2021年广东广州越秀区广州市第二十一中学高三上学期高考模拟第4题5分某实验室针对某种新型病毒研发了一种疫苗，并在500名志愿者身上进行了人体注射实验，发现注射疫苗的志愿者均产生了稳定的免疫应答．若这些志愿者的某免疫反应蛋白M的数值X（单位：mg/L）近似服从正态分布N(15,σ2)，且X在区间(10,20)内的人数占总人数的1925，则这些志愿者中免疫反应蛋白M的数值X不低于20的人数大约为（）．A. 30B. 60C. 70D. 1405、【来源】 2021年广东广州越秀区广州市第二十一中学高三上学期高考模拟第5题5分已知抛物线C:y2=8x的焦点为F，过点F的直线交C于A，B两点，则AB的中点M到C的准线l的距离的最小值为（）．A. 2B. 4C. 5D. 66、【来源】 2021年广东广州越秀区广州市第二十一中学高三上学期高考模拟第6题5分天文学中为了衡量星星的明暗程度，古希腊天文学家喜帕恰斯（Hipparchus，又名依巴谷）在公元前二世纪首先提出了星等这个概念．星等的数值越小，星星就越亮；星等的数值越大，它的光就越暗．到了1850年，由于光度计在天体光度测量中的应用，英国天文学家普森（M.R.Pogson）又提出了衡量天体明暗程度的亮度的概念．天体的明暗程度可以用星等或亮度来描述．两颗星的星等与亮度满足m1−m2=2.5（lg⁡E2−lg⁡E1），其中星等为m i的星星的亮度为E i（i=1，2），已知“角宿一”的星等是0.97，“水委一”的星等是0.47．“水委一”的亮度是“角宿一”亮度的r倍，则与r最接近的是（当|x|较小时，10x≈1+2.3x+2.7x2）A. 1.56B. 1.57C. 1.58D. 1.597、【来源】 2021年广东广州越秀区广州市第二十一中学高三上学期高考模拟第7题5分已知圆C：(x−3)2+(y+3)2=9，直线l：(m+1)x+(2−m)y−3m=0，则当圆心C到直线l的距离最大时，直线l被圆C所截得的弦长为（）．A. 4B. 2√5C. 2√3D. 2√78、【来源】 2021年广东广州越秀区广州市第二十一中学高三上学期高考模拟第8题5分如图，在四棱锥P−ABCD中，PD⊥平面ABCD，底面ABCD是梯形，AB//CD，∠BCD=2π3，AB=4，PD=BC=CD=2，则四棱锥P−ABCD的外接球的表面积为（）．A. 16πB. 18πC. 20πD. 24π二、多选题（本大题共4小题，每小题5分，共20分）9、【来源】 2021年广东广州越秀区广州市第二十一中学高三上学期高考模拟第9题5分已知曲线C：x 2a +y2b=1，（）．A. 若C是双曲线，则ab<0B. 若a>0，C是离心率为2的双曲线，则ba=−3 C. 若ab>0，则C是椭圆D. 若C是离心率为12的椭圆，则ba=3410、【来源】 2021年广东广州越秀区广州市第二十一中学高三上学期高考模拟第10题5分已知f(x)=Acos⁡(ωx+φ)+B(A>0,ω>0,0<φ<π)，其部分图象如图所示，M、N分别为最高点、最低点，则（）．A. A=7B. B=29C. φ=π4D. ω=π1211、【来源】 2021年广东广州越秀区广州市第二十一中学高三上学期高考模拟第11题5分已知数列{a n}的通项公式是a n=2n，在a1和a2之间插入1个数x11，使a1，x11，a2成等差数列；在a2和a3之间插入2个数x21，x22，使a2，x21，x22，a3成等差数列；⋯；在a n和a n+1之间插入n个数x n1，x n2，⋯，x nn，使a n，x n1，x n2，⋯，x nn，a n+1成等差数列，这样得到新数列{b n}：a1，x11，a2，x21，x22，a3，x31，x32，x33，a4，⋯，记数列{b n}的前n项和为S n，则（）．A. x11=3B. x n1+x n2+⋯+x nn=3n⋅2nC. a8=b36D. S10=8112、【来源】 2021年广东广州越秀区广州市第二十一中学高三上学期高考模拟第12题5分如图，平面α∩平面β=直线l，点A，C∈α，点B，D∈β，且A，B，C，D∉l，点M、N分别是线段AB，CD的中点（）．A. 当直线AC与BD相交时，交点一定在直线l上B. 当直线AB与CD异面时，MN可能与l平行C. 当A，B，C，D四点共面且AC//l时，BD//lD. 当M，N两点重合时，直线AC与l不可能相交三、填空题（本大题共4小题，每小题5分，共20分）13、【来源】 2021年广东广州越秀区广州市第二十一中学高三上学期高考模拟第13题5分若向量a→=(1,2)，b→−a→=(−2,1)，则a→⋅b→=．14、【来源】 2021年广东广州越秀区广州市第二十一中学高三上学期高考模拟第14题5分若函数f(x)=−12x2+7x+aln⁡x在x=2处取得极小值，则a=，f(x)的极大值为．15、【来源】 2021年广东广州越秀区广州市第二十一中学高三上学期高考模拟第15题5分已知正实数a，b满足a2+4b2=3，则1a +12b的最小值为．16、【来源】 2021年广东广州越秀区广州市第二十一中学高三上学期高考模拟第16题5分如图，在△ABC中，∠BAC=π3，AB=3，AC=2，点D为边BC上一个动点，将△ABD沿AD翻折，使得点B到达B′的位置，且平面AB′D⊥平面ACD．当CD=时，B′C的长度取到最小值．四、解答题（本大题共6小题，共70分）17、【来源】 2021年广东广州越秀区广州市第二十一中学高三上学期高考模拟第17题10分在①a3=10，②S2=9，③b<−3这三个条件中任选一个，补充在下面问题中．设S n为各项均为正数的数列{a n}的前n项和，满足，a n2+3a n=6S n+ b，是否存在实数b，使得数列{a n}成为等差数列？若存在，求出b和数列{a n}的通项公式；若不存在，请说明理由．18、【来源】 2021年广东广州越秀区广州市第二十一中学高三上学期高考模拟第18题12分第七次全国人口普查是指中国在2020年开展的全国人口普查，普查标准时点是2020年11月1日零时，将彻查人口出生变动情况以及房屋情况．普查对象是普查标准时点在中华人民共和国境内的自然人以及在中华人民共和国境外但未定居的中国公民，不包括在中华人民共和国境内短期停留的境外人员．普查主要调查人口和住户的基本情况，内容包括：姓名、公民身份证号码、性别、年龄、民族、受教育程度、行业、职业、迁移流动、婚姻生育、死亡、住房情况等．普查登记方式全程电子化方式普查，由普查员使用手机上门入户登记或由普查对象通过互联网自主填报．某机构调查了100位居名的普查登记方式，数据统计如下表，部分数据缺失．已知从调查的居民中任取一人，其年龄不超过40岁的概率比其年龄超过40岁的概率大110．(1) 求a，b的值．(2) 是否有99%的把握认为年龄与普查登记方式有关？附：K2=n(ad−bc)2(a+b)(c+d)(a+c)(b+d)，其中n=a+b+c+d．19、【来源】 2021年广东广州越秀区广州市第二十一中学高三上学期高考模拟第19题12分 △ABC 的内角A ，B ，C 的对边分别为a ，b ，c ，已知8sin 2B+C 2−7=2cos⁡2A ．(1) 求A ．(2) 若a =√7，b +c =5，求BC 边上的高．20、【来源】 2021年广东广州越秀区广州市第二十一中学高三上学期高考模拟第20题12分 如图，在直三棱柱ABC −A 1B 1C 1中，∠ACB =90°，AC =BC ，AB =AA 1，D ，E 分别是CC 1、BB 1的中点．(1) 证明：C 1E ⊥平面ACB 1．(2) 求二面角C −AB 1−D 的余弦值．21、【来源】 2021年广东广州越秀区广州市第二十一中学高三上学期高考模拟第21题12分 已知椭圆C ：x 2a 2+y 2b 2=1(a >b >0)的左焦点为F 1(−2,0)，过点F 1且斜率不为0的直线l 交椭圆C 于A ，B 两点，l 交y 轴于点M ，且a b =√2．(1) 求椭圆C 的标准方程．(2) 若MA →=λAF 1→，MB →=μBF 1→，证明：λ+μ为定值．22、【来源】 2021年广东广州越秀区广州市第二十一中学高三上学期高考模拟第22题12分已知函数f(x)=aln x+√x．(1) 若函数f(x)的图象在x=e（e是自然对数的底数）处的切线方程为2ey+√ex−b=0，求实数a，b的值．(2) 若函数f(x)有两个零点，求实数a的取值范围．1 、【答案】 B;2 、【答案】 A;3 、【答案】 D;4 、【答案】 B;5 、【答案】 B;6 、【答案】 B;7 、【答案】 A;8 、【答案】 C;9 、【答案】 A;B;10 、【答案】 A;B;D;11 、【答案】 A;C;D;12 、【答案】 A;C;D;13 、【答案】5;14 、【答案】−10;452−10ln⁡5;15 、【答案】2√63;16 、【答案】2√75;17 、【答案】选择①，b=4，a n=3n+1；选择②，b=0，a n=3n；选择③，不存在实数b，证明见解析．;18 、【答案】 (1) a=45，b=30．;(2) 有关．;19 、【答案】 (1) π3．;(2) 3√217．;20 、【答案】 (1) 证明见解析．;(2) √63．;21 、【答案】 (1) x28+y24=1．;(2) 证明见解析．;22 、【答案】 (1) a=√e；b=5e√e．;(2) a∈(0,2e)．;。

2020-2021学年广州市越秀区明德实验学校高三英语一模试卷及参考答案第一部分阅读（共两节，满分40分）第一节（共15小题；每小题2分，满分30分）阅读下列短文，从每题所给的A、B、C、D四个选项中选出最佳选项AInformation on school visits to Kew GardensEnjoy yourselves in a wonderland of science with over 50,000 living plants and a variety of educational events or amusing activities. Here is essential information about planning a school visit to Kew.Educational course pricesYou can plan a self-led visit or book one of our educational courses. Students will take part in the educational courses in groups of 15. Prices vary according to different situations.EYFS (Early Years Foundation Stage) to Key Stage 4:45-minute course: 35/group 90-minute course: 70/groupKey Stage 5:Half day (one course): 80/group Full day (two courses): 160/groupTeachers and adults:Up to required key stage proportions (比例): FreeAdults needed for 1:1 special educational needs support: FreeAdults above the required proportions: 11/personThe payment will due within 28 calendar days of making the booking.Health and safetyRequired supervising (监护) adult-student proportions:Key Stage 1: 1:5 Key Stage 2: 1:8Key stage 3: 1:10 Key Stage 4: 1:12Key Stage 5: 1:12The group sizes should be controlled if you are visiting potentially busy areas such as the glasshouse and other attractions. The maximum number of students visiting the glasshouses is 15 per group and each group to Kew shops should include no more than 10 students.If there is an emergency, please contact the nearest Kew staff member or call Constabulary on 0208 32 3333for direct and quick support. Please do not call 999.Planning your visitYour tickets and two planning passes will be sent to you upon receipt of your payment. You can complete your risk assessment with the passes, ensure you bring your tickets and the receipt document and show them to the staff members at the gate on the day of your visit.Recommended timingsThe Kew Gardens opens at 10 am. You are recommended to spend at least three to five hours on your visit. The closing time varies throughout the year. But the earliest is 3:30 pm. We have a fixed schedule for educational courses, which is from 10:30 am to 2:20 pm.1.How much should a group of 15 Key Stage I students and 4 teachers pay for a 45-minute course?A.35B.46C.57D.812.What should one do in an emergency?A.Check the risk assessment.B.Call 999 immediately.C.Ask adults or teachers for help.D.Seek help from the staff member nearby.3.What is the purpose of the text?A.To introduce Kew Gardens.B.To give tips on visiting Kew Gardens.C.To attract potential visitors to Kew Gardens.D.To inform coming activities in Kew Gardens.BSmart speakers have proven to be handy devices in hospitals, allowing patients to control independently . And now, researchers from theUniversityofWashingtonhave developed an artificial intelligence system that enables these devices to monitor heartbeats.Using technology to remotely monitor heart rates isn't new. These days most smartwatches and fitness trackers are capable of it. The good thing here is that researchers have figured out a way to use the microphones in smart speakers to do it without requiring physical contact.In a study published inCommunications Biology, the researchers had the smart speakers send out signals that couldn't be heard which were then reflected off a person's body. They then analyzed these signals to identify smallchest wall motions related to heartbeats, as well as separate those signals from surrounding noise and breathing.For this particular proof — of — concept setup, the researchers tested this smart speaker on 26 healthy participants and 24 hospitalized patients with various heart conditions, including atrial fibrillation（心房颤动）and heart failure. In both cases, the smart speaker was within 28 -30 milliseconds of an ECG（心电图）,the gold standard used in hospitals to discover arrhythmia（心律不齐）.Like smartwatches with advanced heart features, using smart speakers in this way opens up the possibility for passive, remote heart monitoring. ECGs, while highly accurate, require a visit to the doctor and several electrodes （电极）to be placed on the body. They,re not capable of continuous monitoring so you're limited to what it picks up at that exact moment in time ——one reason why heart arrhythmia can be so hard to discover.Smartwatches are capable of passive, remote, continuous monitoring, but they require you to wear the device at all times to be effective. It's not something that's comfortable for everyone, especially when it comes to sleep and for those with highly sensitive skin. Another issue is that these advanced smartwatches are expensive, while smart speakers are much cheaper.“If you have a device like this, you can monitor a patient on an extended basis and then develop corresponding care plans that satisfy the patient' s needs,“ said Dr. Arun Sridhar, co — senior author on the study. "And the beauty of using this kind of devices is that they are already in people's homes.”4. What does the author focus on in Paragraph 3?A. How the smart speaker works.B. Why the smart speaker is useful.C. The advantages of smart speakers.D. The importance of the study.5. Why is heart arrhythmia difficult to find?A. ECGs are not highly accurate.B. ECGs can't monitor continuously.C. Doctors know little about heart arrhythmia.D. An ECG test is hard to operate and expensive.6. Which statement best explains the characteristics of smartwatches?A. They are comfortable to wear.B. They are friendly to sensitive skin.C. They are effective and cheap.D. They are able to monitor remotely.7. What can we infer from the last paragraph?A. We need to invent more smart devices.B. Care plans are vital to patients with heart failure.C. Smart speakers could be contactless heart monitors.D. Different devices are needed to meet patients,demands.CNow most of the workers work from 9 am to 5 pm. However, according to the global Internet survey done by the UK Sleep Council, thesiesta（午睡）was the right idea all along. The UK Sleep Council called on the country'sbosses to end nine-to-five working in favor of more flexible hours. They believe what would really increase the workers' productivity is a nice afternoon nap, rather than those bonuses.Forty-one percent of the 12,000 people who responded to the council's survey said they were most productive in the morning, while 38 percent said theyhit their stridein the evening. "This means most of them cannot fully pay attention to what they do in the middle of the day," said sleep expert Dr. Chris Idzikowskii. "We must conclude from this survey that the traditional nine-to-five working day does not suit most workers." He suggested that allowing workers to follow their natural sleeping habits would actually benefit employers by allowing them to expand their working hours and be more productive.Fortunately, being a college lecturer, I don't have to go to work everyday. I only work three days a week, but during the three days I work really long hours and have no time for a little siesta. I'm usually so tired and sleepy in the afternoon, which really affects thevitality（活力）of my classes.I think Dr. Chris Idzikowskii's idea is worthwhile. When people have flexible working hours they could reach their highest productivity. On top of that, flexible working hours mean thatpeople don't have to work all at the same time. That way we could avoid traffic jams. Therefore, it's really killing two birds with one stone!8. What can improve the workers' productivity, according to the UK Sleep Council?A. More bonuses.B. The flexible working time.C. Working for long hours.D. Working in a relaxing way.9. What does the underlined part probably mean in Paragraph 2?A. Were most sleepy.B. Were most flexible.C. Worked at their own pace.D. Worked at their best.10. What did the UK Sleep Council's survey find?A. Few people are suitable to work at noon.B. People are more productive in the morning.C. Some people like to expand their working hours.D. More and more people prefer to work in the evening.11. Why does the author support Dr. Chris Idzikowskii's idea?A. It could solve most of the traffic problems.B. He finds Dr. Chris Idzikowskii respectable.C. He thinks the idea can benefit the society.D. It allows him to work for fewer hours.DIn the U. S., speaking more than one language fluently is not very common except in Los Angeles, California.The city has one of the largest population in the U. S. of young people between the ages of 18 and 34. This generation is often called millennials (新千年一代). More than half of millennials in Los Angeles are bilingual (双语的), which means they speak more than one language.Maria Elena Burgos is cooking a Mexican breakfast. She says making Mexican food is just one of the many traditions in her home. Another is speaking Spanish to her children.“We want them to be bilingual. We want to keep the Spanish somewhere in their learning too, not only at home.”When Ms Burgos first came to the United States from Mexico, she learned English. She knew her children would learn English quickly. So she wanted them to speak Spanish at home and study the language at school.She says being bilingual will give them more opportunities in the future. Knowing Spanish also means the children can talk with their s in Mexico.“When we had our children, one of the decisions we as parents made was to name them with a name that was easily pronounced in English and Spanish.”Elizabeth wants to know her family’s culture.” “The culture-to go back to our roots because that’s part of who we are.”Monica wants to pass on the culture to her children“It’s nice to know our culture and then to be able to pass it onto our children and grand-children and everyone to let them know where we come from.”And, Monica says she does not speak only English and Spanish. She has even learned some Korean in school.12. Which of the following is a tradition of Maria?A. Cooking breakfast for her s.B. Talking with her children in Spanish.C. Talking with her s in Spanish.D. Forcing her children to speak Spanish.13. What can be inferred from Monica’s words?A. She doesn’t care where she comes from.B. She looks forward to learning Spanish.C. Everyone should know his own culture.D. She doesn’t like American culture.14. Which of the following is mentioned about children speaking more languages?A. It can give children more chances in the future.B. It can make children feel proud before their friends.C. It can give the children a chance to go to a good college.D. It can let children go to the places where they want to go.15. What’s the main purpose of this passage?A. To entertain the readers with a funny story.B. To inform the readers of a shocking experiment result.C. To encourage more persons to learn a second language.D. To tell a truth that many people in Los Angeles are bilingual.第二节（共5小题；每小题2分，满分10分）阅读下面短文，从短文后的选项中选出可以填入空白处的最佳选项。