太原五中2017-2018学年度第二学期周练

山西省太原市第五中学2017-2018学年高二语文下学期阶段性练习②他们二人此次在北京会面，就进一步推进两家企业贸易往来的发展进行磋商，大家都乐观其成。

试题③申雪、赵宏博自信满满地表示，已经为明天的自由滑雪比赛做好了准备，刚刚夺得了国际滑联短节目冠军，正好及锋而试。

一、语文基础知识（64分，每小题4分）④近年来，该县不断改进干部监督方式方法，通过加强日常教育、明确监督重点、完善工1下列句中加点成语的使用，全都正确的一组是作协作机制等，不绝如缕地提升干部监督工作效力。

①改革就意味着坚决果断地破除已形成的阻碍社会经济发展的东西,破除过去经济管理中⑤乾隆在下江南的途中，看到一些贫困的百姓不能自给，便慷慨施舍。

走一路，银子撒一长期存在的清规戒律。

路，因此在百姓的眼里，皇帝成了过路财神。

②齐白石被称作“画痴”。

他每日作画，废笔如山，所画虾蟹、虫鱼、瓜果、山水，无不⑥提要钩玄是一种重要的阅读方法，运用时要抓住关键词语，概述文章的脉络，做到纲举显出深厚功底，有运斤成风之能。

目张，化繁为简。

③在世预赛形势极为被动的情况下，高洪波临危授命，担任国足教练，最终带队获得十二A①④⑥B①②⑤C②③⑥D③④⑤强赛资格，为中国足球事业做出了贡献。

4下列句子中加点成语的使用，全都正确的一组是④这座大山深处隐藏着近千米长的古城墙，它虚与委蛇地盘踞在山腰，酷似闻名世界的万①联合国新任秘书长安东尼奥•古特雷斯，曾担任葡萄牙总理，他外交能力突出，四国语里长城，在中原地区实属罕见。

言信手拈来，各外媒对他的语言才能赞不绝口。

⑤以立法形式禁止“啃老”，或许短期内有效果，但如果社会保障不能完善，这一做法将②作为与南海争议无关的城外国家，日本逢人说项，渲染紧张气氛，口口声声说要改善日无异于扬汤止沸，并非解决之道。

中关系，却又四处散布“中国威胁论”，堪称国际政治舞台上的“奇葩”。

⑥“假期过着过着就没了，真是遗憾！”不少网友在微博上吐槽，感慨假期如吉光片羽，③这十年间的悲欢离合，白云苍狗，令人回想起来不禁感慨万千，前尘往事久久萦绕于心，还来不及好好享受，就已过去。

太原五中2017—2018学年度第二学期阶段性练习高二数学（理）出题人、校对人：王志军时间：2018.4.25一、选择题（共10小题，每小题5分，共50分）1. 位大学毕业生分配到家单位，每家单位至少录用人，则不同的分配方法共有A. 种B. 种C. 种D. 种2. 甲、乙、丙三人站到共有级的台阶上，若每级台阶最多站人，同一级台阶上的人不区分站的位置，则不同的站法种数是A. B. C. D.3. 已知集合，，，从这三个集合中各取一个元素构成空间直角坐标系上的坐标，则确定的不同点的个数为A. B. C. D.4. 有两个同心圆，在外圆周上有不重合的六个点，在内圆周上有不重合的三个点，由这九个点确定的直线最少有A. 条B. 条C. 条D. 条5. 有张卡片分别写有数字，，，，，，，从中任取张，可排出的四位数有个．A. B. C. D.6. 某翻译公司为提升员工业务能力，为员工开设了英语、法语、西班牙语和德语四个语种的培训课程，要求每名员工参加且只参加其中两种．无论如何安排，都有至少名员工参加的培训完全相同．问该公司至少有多少名员工A. B. C. D.7. 袋中装有个球，其中有个红球、个白球、个黄球，若取到一个红球得分，取到一个白球得分，取到一个黄球得分．那么从袋中取出个球，使得总分大于分且小于分的取法种数为A. 种B. 种C. 种D. 种8. 身高从矮到高的甲、乙、丙、丁、戊人排成高矮相间的一个队形，则甲丁不相邻的不同的排法共有A. B. C. D.9. 从到这个数字中任取个数字组成一个没有重复数字的三位数，这个数不能被整除的概率为A. B. C. D.10. 如果自然数的各位数字之和等于，我们称为“吉祥数”．将所有“吉祥数”从小到大排成一列，，，若，则A. B. C. D.二、填空题（共4小题；，每小题5分，共20分）11. 工人在悬挂如图所示的一个正六边形装饰品时，需要固定六个位置上的螺丝，首先随意拧紧一个螺丝，接着拧紧距离它最远的第二个螺丝，再随意拧紧第三个螺丝，接着拧紧距离第三个螺丝最远的第四个螺丝，第五个和第六个以此类推，则不同的固定方式有种．12. 用四种不同的颜色为正六边形（如图）中的六块区域涂色，要求有公共边的区域涂不同颜色，一共有种不同的涂色方法．13. 有这样一种数学游戏：在的表格中，要求在每个格子中都填上三个数字中的某一个数字，并且每一行和每一列都不能出现重复的数字．若游戏开始时表格的第一行第一列已经填上了数字（如左图），则此游戏有种不同的填法；若游戏开始时表格是空白的（如右图），则此游戏共有种不同的填法．14. 设坐标平面内有一个质点从原点出发，沿轴跳动，每次向正方向或负方向跳个单位，若经过次跳动质点落在点处（允许重复过此点），则质点不同的运动方法共有种（用数字作答）；若经过次跳动质点落在点处（允许重复过此点），则质点不同的运动方法共有种（用数字作答）．1234567891011、12、13、14、三、解答题（共2题；每题15分，共30分）15. 如图，由若干个小正方形组成的层三角形图阵，第一层有个小正方形，第二层有个小正方形，依此类推，第层有个小正方形.除去最底下的一层，每个小正方形都放置在它下一层的两个小正方形之上.现对第层的每个小正方形用数字进行标注，从左到右依次记为，，，，其中，其它小正方形标注的数字是它下面两个小正方形标注的数字之和，依此规律，记第一层的小正方形标注的数字为 .（1）当时，若要求为的倍数，则有多少种不同的标注方法?（2）当时，若要求为的倍数，则有多少种不同的标注方法?16. 设是数，，，，，，，，，的任意一个全排列，定义，其中．（1）若，求的值；（2）求的最大值；（3）求使达到最大值的所有排列的个数．排列组合2018年4月25日数学试卷一、选择题（共10小题，每小题5分，共50分）1. 位大学毕业生分配到家单位，每家单位至少录用人，则不同的分配方法DA. 种B. 种C. 种D.种2. 甲、乙、丙三人站到共有级的台阶上，若每级台阶最多站人，同一级台阶上的人不区分站的位置，则不同的站法种数是A. B. C. D.2. C【解析】由题意知本题需要分类解决，因为对于个台阶上每一个只站一人有种；若有一个台阶有人另一个是人共有种，所以根据分类计数原理知共有不同的站法种数是种．3. 已知集合，，，从这三个集合中各取一个元素构成空间直角坐标系上的坐标，则确定的不同点的个数为A. B. C. D.3. C【解析】不考虑限定条件确定的不同点的个数为，但集合，中有相同元素，由，，三个数确定的不同点的个数只有三个，故所求的个数为个．4. 有两个同心圆，在外圆周上有不重合的六个点，在内圆周上有不重合的三个点，由这九个点确定的直线最少有A. 条B. 条C. 条D.条4. B【解析】当九个点如图排列时确定的直线条数最少，为条．5. 有张卡片分别写有数字，，，，，，，从中任取张，可排出的四位数有个．A. B. C. D.5. C6. 某翻译公司为提升员工业务能力，为员工开设了英语、法语、西班牙语和德语四个语种的培训课程，要求每名员工参加且只参加其中两种．无论如何安排，都有至少名员工参加的培训完全相同．问该公司至少有多少名员工?A. B. C. D.6. C【解析】开设英语、法语、西班牙语和德语四个语种的培训课程，要求每名员工参加且只参加其中两种．没有相同的安排共有种，当每种安排各有人，没有名员工参加的培训完全相同．此时有员工人，当增加人，必有名员工参加的培训完全相同．所以该公司至少有名员工．7. 袋中装有个球，其中有个红球、个白球、个黄球，若取到一个红球得分，取到一个白球得分，取到一个黄球得分．那么从袋中取出个球，使得总分大于分且小于分的取法种数为A. 种B. 种C. 种D.种7. C【解析】分析知，共有四种情况：1、个红球，个白球，个黄球，有种；2、个红球，个白球，个黄球，有种；3、个红球，个黄球，有种；4、个红球，个白球，个黄球，有种．共种．8. 身高从矮到高的甲、乙、丙、丁、戊人排成高矮相间的一个队形，则甲丁不相邻的不同的排法共有A. B. C. D.8. B【解析】从矮到高的甲、乙、丙、丁、戊人的身高分别用来表示，并且和不相邻．当波浪队形是型时，若先排波峰的两个数是和时，则只有种排法，和排在剩余的个位上这样的数有种．若先排波峰的两个数是和时，则只有种排法，和排在剩余的个位上这样的数有种．当波浪队形是型时，若先排波谷的两个数是和时，则只有种排法，和排在剩余的个位上这样的数有种．若先排波谷的两个数是和时，这样的数只有个，分别为．综上，甲丁不相邻的不同的排法共有种.9. 从到这个数字中任取个数字组成一个没有重复数字的三位数，这个数不能被整除的概率为A. B. C. D.9. C【解析】把个数字分为三类：；；．能被整除的数共有个；总共可组成个无重复数字的三位数，所以所求概率为．10. 如果自然数的各位数字之和等于，我们称为“吉祥数”．将所有“吉祥数”从小到大排成一列，，若，则A. B. C. D.10. A【解析】由题意，一位数时只有一个；二位数时，有，，，，，，，共个；三位数时：有个，有个，有个，有个，有个，有有个，有个，，有个，有个，共个；四位数小于等于有个，有个，有个，有个，有个，有个，有个，有个，有个；共有个数，所以小于等于的一共有个，即 .二、填空题（共4小题；，每小题5分，共20分）11. 工人在悬挂如图所示的一个正六边形装饰品时，需要固定六个位置上的螺丝，首先随意拧紧一个螺丝，接着拧紧距离它最远的第二个螺丝，再随意拧紧第三个螺丝，接着拧紧距离第三个螺丝最远的第四个螺丝，第五个和第六个以此类推，则不同的固定方式有种．11.12. 用四种不同的颜色为正六边形（如图）中的六块区域涂色，要求有公共边的区域涂不同颜色，一共有种不同的涂色方法．12.【解析】考虑A，C，E用同一颜色，此时共有种方法．考虑A，C，E用种颜色，此时共有种方法．考虑A，C，E用种颜色，此时共有种方法．故共有种不同的涂色方法．13. 有这样一种数学游戏：在的表格中，要求在每个格子中都填上三个数字中的某一个数字，并且每一行和每一列都不能出现重复的数字．若游戏开始时表格的第一行第一列已经填上了数字（如左图），则此游戏有种不同的填法；若游戏开始时表格是空白的（如右图），则此游戏共有种不同的填法．13. ，【解析】若第一行已经填上，则第一行数字可能为或；若第一行为，则剩下两行必分别为和，所以满足题意的填法为种．若游戏开始是表格空白，则表格的三行中可分别填入、、或、、．所以不同的填法共有种．14. 设坐标平面内有一个质点从原点出发，沿轴跳动，每次向正方向或负方向跳个单位，若经过次跳动质点落在点处（允许重复过此点），则质点不同的运动方法共有种（用数字作答）；若经过次跳动质点落在点处（允许重复过此点），则质点不同的运动方法共有种（用数字作答）．14. ，【解析】跳次质点落在处，则向正方向跳了步，向负方向跳了步，所有不同的运动方法有种；同理，经过次跳到处共有种方法．三、解答题（共2题；每题15分，共30分）15. 如图，由若干个小正方形组成的层三角形图阵，第一层有个小正方形，第二层有个小正方形，依此类推，第层有个小正方形.除去最底下的一层，每个小正方形都放置在它下一层的两个小正方形之上.现对第层的每个小正方形用数字进行标注，从左到右依次记为，，，，其中，其它小正方形标注的数字是它下面两个小正方形标注的数字之和，依此规律，记第一层的小正方形标注的数字为.（1）当时，若要求为的倍数，则有多少种不同的标注方法?（2）当时，若要求为的倍数，则有多少种不同的标注方法?15. （1）当时，第层标注数字依次为，，，，第层标注数字依次为，，，第层标注数字依次为，，所以．因为为的倍数，所以是的倍数，则，，，四个都取或两个取两个取或四个都取，所以共有种标注方法.（2）当时，第层标注数字依次为，，，，第层标注数字依次为，，，，第层标注数字依次为，，，，以此类推，可得．因为，，，均为的倍数，所以只要是的倍数，即只要是的倍数.所以四个都取或三个取一个取，而其余七个可以取或，这样共有种标注方法．16. 设是数，，，，，，，，，的任意一个全排列，定义，其中．（1）若，求的值；（2）求的最大值；（3）求使达到最大值的所有排列的个数．16. （1）．（2）数，，，，，，，，，的倍与倍分别如下：，，，，，，，，，，，，，，，，，，，．其中较大的十个数之和与较小的十个数之和的差为，所以．对于排列，此时，所以的最大值为．（3）由于数，，，所产生的个数都是较小的数，而数，，，所产生的个数都是较大的数，所以使取最大值的排列中，必须保证数，，，互不相邻，数，，，也互不相邻；而数和既不能排在，，，之一的后面，又不能排在，，，之一的前面．设，并参照下面的符号排列其中，，任意填入个中，有种不同的填法；，，，任意填入个中，共有种不同的填法；填入个之一中，有种不同的填法；填入个中，且当与在同一个时，既可以在之前又可在之后，共有种不同的填法，所以当时，使达到最大值的所有排列的个数为，由轮换性知，使达到最大值的所有排列的个数为．。

密学校 班级姓名 学号密 封 线 内 不 得 答 题太原五中2017—2018学年度第二学期阶段性练习高 二 英 语：高二外语组 (2018.3.29)I. 单项选择 （10分）1. “Never for a second,” the boy says, “ ________ that my father would come to my rescue.”A.I doubtedB. do I doubtC. I have doubtedD. did I doubt 2. “You _______ the expensive clothes,” she said. “This is an important interview.”A. valueB. deserveC. considerD. attend 3. Those poor and needy teenagers were excited to find a shop at the corner where they could buy priced bikes.A. competitivelyB. recentlyC. reasonablyD. affordably 4. He made too many mistakes in the exam. To it another way, he failed to pass the exam.A. putB. placeC. setD. get 5. My parents always great importance to my getting a good education. A. have B. attach C. accept D. pay6. Is Barack Obama the first black man to take _____ possession of the White House as President in _____ history of the USA?A. the; theB. the; aC. 不填; theD. 不填; a 7. I think impresses me about his painting is the colors he uses.A. whatB. thatC. whichD. who 8. we understand things has a lot to do with what we feel.A. WhereB. HowC. WhyD. When9. It remains to be seen ________ the newly formed committee’s policy can be put into practice.A. thatB. whichC. whatD. whether 10. From space, the earth looks blue. This is _______ about seventy-one percent of its surface is covered by water.A. whyB. howC. becauseD. whetherII. 完形填空（共20小题；每小题1.5分，满分30分）As a general rule, all forms of activity lead to boredom when they are performed on a routine basis. As a matter of fact, we can see this 11 at work in people of all 12 . For example, on Christmas morning, children are excited about 13 with their new toys. But their 14 soon wears off and by January those 15 toys can be found put away in the basement. The world is full of 16 stamp albums and unfinished models, each standing as a monument to someone’s 17 interest. When parents bring home a pet, theirchild 18 bathes it and brushes its fur. Within a short time, however, the 19 of caring for the animal is handed over to the parents. Adolescents enter high school with great 20 but soon looking forward to 21 . The same is true of the young adults going to the college. And then, how many 22 , who complain about the long drives to work, 23 drove for hours at a time when they first 24 their driver ’s licenses? Before people retire, they usually 25 to do a lot of 26 things, which they never had 27 to do while working. But 28 after retirement, the golfing, the fishing, the reading and all of the other pastimes become as boring as the jobs they 29 . And, like the child in January, they go searching for new 30 . 11. A. principle B. habit C. way D. power 12. A. parties B. races C. countries D. ages 13. A. working B. living C. playing D. going 14. A. confidence B. interest C. anxiety D. sorrow 15. A. same B. extra C. funny D. expensive 16. A. well-organized B. colorfully-printed C. newly-collected D. half-filled 17. A. broad B. passing C. different D. main 18. A. silently B. impatiently C. gladly D. worriedly 19. A. promise B. burden C . right D. game 20. A. courage B. calmness C. confusion D. excitement 21. A. graduation B. independence C. responsibility D. success 22. A. children B. students C. adults D. retirees 23. A. carefully B. eagerly C. nervously D. bravely 24. A. required B. obtained C. noticed D. discovered 25. A. need B. learn C. start D. plan 26. A. great B. strange C. difficult D. correct 27. A. time B. money C. skills D. knowledge 28. A. only B. well C. even D. soon 29. A. lost B. chose C. left D. quit 30. A. pets B. toys C. friends D . colleaguesIII. 阅读理解（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，从每题所给的四个选项（A 、B 、C 和D ）中，选出最佳选项。

太原五中2017-2018学年度第二学期阶段性练习高 二 物 理（理）2018年3月27日一、选择题（每小题6分， 1-5题只有一个选项符合题意，6-8有二个或二个以上选项符合题意, 全部选对的得4分,选对但不全的得2分,有选错的得0分. 共48分） 1.扫描隧道显微镜(STM)可用来探测样品表面原子尺度上的形貌。

为了有效隔离外界振动对STM 的扰动，在圆底盘周边沿其径向对称地安装若干对紫铜薄板，并施加磁场来快速衰减其微小振动，如图所示。

无扰动时，按下列四种方案对紫铜薄板施加恒磁场;出现扰动后，对于紫铜薄板上下及左右振动的衰减最有效的方案是()2.图乙是小型交流发电机的示意图，在匀强磁场中，一矩形金属线圈绕与磁感线垂直的转轴匀速转动，产生的电动势随时间变化的正弦规律图像如图甲所示。

发电机线圈内阻为10Ω，外接一只电阻为90Ω的灯泡，不计电路的其他电阻，则（ ）A ．灯泡实际消耗的功率为537．8WB ．每秒钟内电流方向改变50次C ．灯泡两端的电压为198VD ．发电机线圈内阻每秒钟产生的焦耳热为40J3.如图所示，图线a 是线圈在匀强磁场中匀速转动时所产生正弦交流电的图象，当调整线圈转速后，其在同一磁场中匀速转动过程中所产生正弦交流电的图象如图线b 所示。

以下关于这两个正弦交流电的说法错误的是A ．在图中t =0时刻穿过线圈的磁通量均为零B ．线圈先后两次转速之比为3:2C ．交流电a 的瞬时值为u=10sin5t π(v)D ．交流电b 电压的最大值为320（v ） 4.交流发电机电枢中产生的交变电动势为t E e m ωsin =，如果要将交变电动势的有效值提高一倍，而交流电的周期不变，可采取的方法是（ ）A ．将磁感应强度增加一倍，其他条件不变B ．将电枢转速提高一倍，其他条件不变C ．将线圈的面积减小一倍，其他条件不变D ．将磁感应强度增加一倍，线圈的面积缩小一半，其它条件不变 5.图（甲）为小型旋转电枢式交流发电机的原理图，其矩形线圈在匀强磁场中绕垂直于磁场方向的固定轴OO ′匀速转动，线圈的匝数n=100、电阻r=10 Ω，线圈的两端经滑环、电刷与电阻R 连接，电阻R=90Ω，与R并联的交流电压表为理想电表，电路中串联一保险丝（完好无损）。

密学校 班级姓名 学号密 封 线 内 不 得 答 题太原五中2017—2018学年度第二学期阶段性练习高 二 英 语(2018.3.22)I. 完形填空（共20小题；每小题1.5分，满分30分）Joe Simpson and Simon Yates were the first people to climb the West Face of the Siula Grande in the Andes mountains. They reached the top ___1___, but on their way back conditions were very ___2___. Joe fell and broke his leg. They both knew that if Simon ___3___ alone, he would probably get back ___4___. But Simon decided to risk his ___5___ and try to lower Joe down the mountain on a rope (绳).As they ___6___ down, the weather got worse. Then another ___7___ occurred. They couldn’t see or hear each other and, ___8___, Simon lowered his friend over the edge of a precipice (峭壁). It was ___9___ for Joe to climb back or for Simon to pull him u p. Joe’s ___10___ was pulling Simon slowly towards the precipice. ___11___, after more than an hour in the dark and the icy cold, Simon had to ___12___. In tears, he cut the rope. Joe ___13___ into a large crevasse (裂缝) in the ice below. He had no food or water and he was in terrible pain. He couldn’t walk, but he ___14___ to get out of the crevasse and started to ___15___ towards their camp, nearly ten kilometers ___16___.Simon had ___17___ the camp at the foot of the mountain. He thought that Joe must be ___18___, but he didn’t want to leave ___19___. Three days later, in the middle of the night, he heard Joe’s voice. He couldn’t ___20___ it. Joe was there, a few meters from their tent, still alive.1. A. hurriedly B. carefully C. successfully D. early2. A. difficult B. similar C. special D. normal3. A. climbed B. worked C. rested D. continued4. A. unwillingly B. safely C. slowly D. regretfully5. A. fortune B. time C. health D. life6. A. lay B. settled C. went D. looked7. A. damage B. storm C. change D. trouble8. A. by mistake B. by chance C. by choice D. by luck9. A. unnecessary B. practical C. important D. impossible 10. A. height B. weight C. strength D. equipment 11. A. Finally B. Patiently C. SurelyD. Quickly 12. A. stand backB. take a restC. make a decisionD. hold on13. A. jumped B. fell C. escaped D. backed 14. A. managed B. planned C. waited D. hoped 15. A. run B. skate C. move D. march 16. A. around B. away C. above D. along 17. A. headed for B. traveled to C. left for D. returned to 18. A. dead B. hurt C. weak D. late 19. A. secretly B. tiredly C. immediately D. anxiously 20. A. find B. believe C. make D. accept II. 阅读理解（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，从每题所给的四个选项（A 、B 、C 和D ）中，选出最佳选项。

太原五中2017—2018学年度第二学期阶段性练习高二英语(2018.03.15)I. 完形填空（共20小题；每小题2分，满分40分）阅读下面短文，从短文后各题所给的A、B、C、D四个选项中，选出适合填入对应空白处的最佳选项，并在答题卡上将该项涂黑。

I used to believe in the American Dream, which meant a job, a mortgage (按揭), credit cards and success. I wanted it and worked toward it like everyone else, all of us 1 chasing the same thing.One year, through a series of unhappy events, it all fell 2 . I found myself homeless and alone. I had my truck and $56. I 3 the countryside for some place I could rent for the 4 possible amount. I came upon a shabby house four miles up a winding mountain road 5 the Potomac River in West Virginia. It was 6 , full of broken glass and rubbish. I found the owner, rented it, and 7 a corner to camp in.The locals knew nothing about me, 8 slowly, they started teaching me the 9 of being a neighbor. They dropped off blankets, candles, and tools, and began 10 around to chat. They started to teach me a belief in a 11 American Dream —not the one of individual achievement but of 12 .What I had believed in, all those things I thought were 13 for a civilized life, were nonexistent in this place. 14 on the mountain, my most valuable possessions were my 15 with my neighbors.Four years later, I moved back into 16 . I saw many people were having a really hard time, 17 their jobs and homes. I managed to rent a big enough house to 18 a handful of people. There are four of us now in the house, but over time I’ve had nine people come in an d move on to other places. We’d all be in 19 if we hadn’t banded together.The American Dream I believe in now is a shared one. It’s not so much about what I can get for myself; it’s about 20 we can all get by together.1. A. separately B. equally C. violently D. naturally2. A. off B. apart C. over D. out3. A. crossed B. left C. toured D. searched4. A. fullest B. largest C. fairest D. cheapest5. A. at B. through C. over D. round6. A. occupied B. abandoned C. emptied D. robbed7. A. turned B. approached C. cleared D. cut 8. A. but B. although C. otherwise D. for9. A. benefit B. lesson C. nature D. art10. A. sticking B. looking C. swinging D. turning11. A. wild B. real C. different D. remote12. A. neighborliness B. happiness C. friendliness D. kindness13. A. unique B. expensive C. rare D. necessary14. A. Up B. Down C. Deep D. Along15. A. cooperation B. relationships C. satisfaction D. appointments16. A. reality B. society C. town D. life17. A. creating B. losing C. quitting D. offering18. A. put in B. turn in C. take in D. get in19. A. yards B. shelters C. camps D. cottages20. A. when B. what C. whether D. howII. 阅读理解（共两节，满分30分）第一节（共10小题；每小题2分，满分20分）阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项。

2017-2018学年一、选择题（40分）1．下列选项中加点字字音字形全都正确的一项是（）A．耘籽．（zǐ）壶觞．（shāng）盘桓．（huán）靡．途（mí）B．熹．微（xǐ）僮．仆（tîng）流憩．（qì）丰稔．（rěn）C．容膝．（qī）东皋．（gāo）轻飏．（yáng）翳翳．（yì）D．洒樽．（zūn）西筹．（chîu）船棹．（zhào）矫．首（jiǎo）2．下列选项中加点字字音字形全都正确的一项是（）A．翼轸．（zhěn）瓯．越（ōu）叨．陪（dāo）腾蛟．起凤（jiǎo）B．懿．范（yí）襜．帷（chān）棨．戟（qǐ）云销雨霁．（qí）C．潦．水（liǎo）闾阎．（yán）睢．园（suǐ）钟鸣鼎．食（dǐng）D．簪笏．（hù）凫渚．（zhǔ）彭蠡．（lǐ）衡阳之浦．（pǔ）3．下列句子中，加点词的解释全部正确的一项是（）A．景．翳翳以将入（日光）寻．陈氏妹丧于武昌（不久）B．审．容膝之易安（仔细看）策．扶老以流憩（拄着）C．恨．晨光之熹微（痛恨）乃瞻衡．宇（横木）D．感吾生之行．休（将要）聊．乘化以归尽（无聊）4．下列句中加点虚词意义和用法相同的一项是（）A．何厌之．有胡为乎遑遑欲何之．B．既自以心．为形役木欣欣以．向荣C．寻陈氏妹丧于．武昌遂见用于．小邑D．风飘飘而．吹衣泉涓涓而．始流5．下列句子中，加点词的用法归类正确的一项是（）①眄庭柯以怡．颜②腾．蛟起凤③吾得兄．事之④园日．涉以成趣⑤策．扶老以休憩⑥或棹．孤舟⑦悦．亲戚之情话⑧乐．情书以消忧A．①/②③④/⑤⑥/⑦⑧ B．①/②③④/⑤/⑥⑦⑧C．①②/③④/⑤⑥/⑦⑧ D．①②/③④⑤/⑥/⑦⑧6．下列句子中，句式归类正确的一项是（）①遂见用于小邑②既自以心为形役③将有事于西畴④复驾言兮焉求⑤胡为乎遑遑欲何之⑥问征夫以前路⑦农人告余以春及⑧乐夫天命复奚疑A．①②/③⑥/④⑤⑦⑧ B．①③/②④⑤⑧/⑥⑦C．①③/②⑥⑦/④⑤⑧ D．①②/③⑥⑦/④⑤⑧7．下列各句中，加点词的意义和用法均相同的一项是（）A．①饥冻虽切，违己交．病②归去来兮，请息交．以绝游B．①问征夫．以前路②乐夫．天命复奚疑C．①奚．惆怅而独悲②乐夫天命复奚．疑D．①既自以心为形．役②寓形．宇内复几时8．下列有关文学常识的表述，不正确的一项是（）A．“亲故多劝余为长吏”句中的“长吏”，是指职位较高的官吏，汉时俸禄二百石至四百石。

密学校 班级姓名 学号密 封 线 内 不 得 答 题太原五中2017-2018学年度第二学期阶段性练习高 一 英 语（考试时间20180315）I 完形填空 (每小题2分，共40分)Michael Greenberg is a very popular New Yorker. He is not famous in sports or the arts, But people in the streets 1 him, especially those who are 2 . For those people, he is “Gloves” Greenberg. How did he get that 3 ? He looks like any other businessman, wearing a suit and carrying a briefcase (公文箱). But he’s 4 . His briefcase always has some gloves 。

In winter, Mr.Greenberg does not 5 like other New Yorkers, who look at the sidewalk and 6 the street. He looks around at 7 . He stops when he 8 someone with no gloves. He gives them a pair and then he 9 , looking for more people with cold 10 .On winter days, Mr.Greenberg 11 gloves. During the rest of the year, he 12 gloves. People who have heard about him 13 him gloves,and he has many in his apartment.Mr. Greenberg 14 doing this 21 years ago. Now, many poor New Yorkers know him and 15 his behavior. But people who don’t know him are sometimes 16 him. They don’t r ealize that he just wants to make them 17 .It runs in the 18 . Michael’s father always helped the poor as he believed it made everyone happier. Michael Greenberg feels the 19 . A pair of gloves may be a 20 thing, but it can make a big difference in winter. 1.A. know about B. learn from C. cheer for D. look after 2. A. old B. busy C. kind D. poor 3. A. job B. name C. chance D. message 4.A. calm B. different C. crazy D. curious 5.A. act B. sound C. feel D. dress 6.A. cross over B. drive along C. hurry down D. keep off 7. A. cars B. people C. street numbers D. traffic lights 8.A. helps B. chooses C. greets D. sees 9.A. holds up B. hangs out C. moves on D. turns around 10.A. hands B. ears C. faces D. eyes 11. A. searches for B. stores up C. gives away D. puts on 12. A. borrows B. sells C. returns D. buys 13. A. call B. send C. lend D. show 14. A. delayed B. remembered C. began D. enjoyed 15. A. understand B. dislike C. study D. excuse 16. A. sorry for B. satisfied with C. proud of D. surprised by 17.A. smart B. rich C. special D. happy18. A. city B. family C. neighborhood D. company19. A. honor B. pain C. same D. cold 20. A. small B. useful C. delightful D. comforting II 阅读理解第一节 (每小题2分，共10分)There was a story many years ago of a school teacher--- Mrs. Thompson. She told the children on the first day that she loved them all the same. But that was a lie. There in the front row was a little boy named Teddy Stoddard. He did n’t play well with the other children and he always needed a bath. She did not like him.Then Mrs. Thompson got to know that Teddy was actually a very good boy before the death of his mother. Mrs. Thompson was ashamed of herself. She felt even worse when, like all her other students, Teddy brought her a Christmas present too. It was his mother’s perfume. Teddy said, “Mrs. Thompson, today you smell just like my Mom used to.” After the children left she cried for at least an hour. On that very day, she stopped teaching reading, writing and math. Instead, she began to teach children.Mrs. Thompson paid particular attention to Teddy. The boy’s mind seemed to come alive. The more she encouraged him, the faster he improved. By the end of the sixth grade, Teddy had become one of the smartest children in the class.Six years went by before she got a note from Teddy. He wrote that he had finished high school, third in his class, and she was still the best teacher he ever had in his whole life. He went to college. Mrs. Thompson got two more letters from him with the last one signed, Theodore F. Stoddard, M. D.(医学博士).The story doesn’t end there. On his wedding day, Dr. Stoddard whispered in Mrs. Thompson’s ear, “Thank you, Mrs. Thompson, for believing in me. You made me feel important and showed me that I could make a difference.”Mrs. Thompson, with tears in her eyes, whispered back, “Teddy, you have it all wrong. You were the one who taught me that I could make a difference. I didn’t know how to teach until I met you.”21. What did Mrs. Thompson do on the first day of school?A. She made Teddy feel ashamed.B. She asked the children to play with Teddy.C. She changed Teddy’s seat to the front row.D. She told the class something untrue about herself. 22. What did Mrs. Thompson find out about Teddy?A. He often told lies.B. He was good at math.C. He needed motherly care.D. He enjoyed playing with others. 23. In what way did Mrs. Thompson change?A. She taught fewer school subjects.B. She became stricter with her students.C. She no longer liked her job as a teacher.D. She cared more about educating students.24. Why did Teddy thank Mrs. Thompson at his wedding?A. She had kept in touch with him.B. She had given him encouragement.C. She had sent him Christmas presents.D. She had taught him how to judge people.25. What does the underlined word “perfume” probably mean?A. a kind of foodB. a sweet-smelling liquidC. a piece of clothingD. a beautiful jewelIII 阅读理解第二节(每小题2分，共10分)My mother is a diligent and kind woman. She is very busy from morning till night. As a teacher, she works hard. 1 Both my brother and I love her dearly as she loves us.My mother has been teaching math at a middle school in my hometown. She goes to work early in the morning and does not return home until late in the afternoon. 2 She treats them with patience and teaches them well. For her excellent quality and very good teaching results, she has been elected as a model teacher several times.3 Every day, when she comes back home from work, she sets about doing housework, sweeping the living room and bedrooms or cleaning the furniture, and putting everything in good order. She seems to be busy all the time. As she has been very busy working every day, she looks older than her age. But she looks as cheerful and happy as ever. Mother never buys expensive dresses for herself, but she often buys some inexpensive but high quality clothes for us.4 She just eats a plain meal outside when she is too busy to cook herself. She lives a busy yet simple life, without any complaints.Often she says to us, “Work while you work, and play while you play. That is the way to be happy and gay. If you do not work, you will become lazy and be of no use to society”. What a piece of good advice this is! 5 This advice of hers will always serve as a guide to my behavior. My mother is great indeed, and I always feel proud of her.A. She enjoys listening to classic music.B. As a mother, she takes good care of us and gives us every comfort.C. She loves her students and cares for them.D. She never goes to expensive restaurants to enjoy meals.E. My mother is hard-working and never wastes money.F. I never forget it and always bear it in my mind.G. Can you tell us something about your mother?IV 单项选择(每小题1分，共5分)31. Several weeks had gone by _____ I realized the painting was missing.A. asB. beforeC. sinceD. when32. They were swimming in the river _____ suddenly the storm started.A. whenB. whileC. untilD. as33. --- So you know Dean? --- Yes, it was last week ___ I surfed the Internet.A. thatB. whenC. sinceD. before 34. ____ the weather was fine, I opened all the windows.A. AsB. ForC. Because ofD. Since that35. _____ he did not obey the rules, he was punished.A. ForB. BecauseC. WhileD. IfV用适当的词或词的适当形式填空(每小题1分，共10分)36. Reading the h_______ of the news helps you quickly find the meaning of it.37. Today’s shows feature a host of c_____________ such as Lu Han, Li Yifeng and so on.38. Yang liwei made 14 o_________ of the earth when in space.39. If you are a__________ a ship or plane, you are on it or in it.40. Last week we showed warm w__________ to the visiting football team from the USA.41. Robots are r___ people in many ways. Will it be hard for people to find jobs in the future?42. The teachers feel very d_____ to see so many students making progress in their studies.43. 82 Chinese sports players took part in the Pyeongchang Winter Olympics i__ t___ (总共).44. Gold i____ s______ t______ copper in color.45. Some people b_______ i____ God while others don’t.VI 语篇填空（共10小题；每小题1.5分，满分15分）Are you facing a situation that looks impossible to fix?In 1969, the pollution is terrible along the Cuyahoga River near Cleveland, Ohio. It _46_ (be) unimaginable that it could ever be cleaned up. The river was so polluted that it _47_ (actual) caught fire and burned. Now years later, this river is one of _48_ most outstanding examples of environmental cleanup.But the river wasn’t changed in a few days_49_ even a few months. It took years of work _50_ (reduce) industrial pollution and clean the water. Finally, that hard work paid off and now the water in the river is _51_ (clean) than ever. Maybe you are facing an impossible situation. Maybe you have a habit _52_ is driving your family crazy. Possibly you drink too much or don’t know how to control your credit card use. When you fa ce such impossible situation, don’t you want a quick fix and something to change immediately?While there are _53_ (amaze) stories of instant transformation, for most of us the _54_ (change) are gradual and require a lot of effort and work, like cleaning up a polluted river. Just be _55_ (patience)VII短文改错（共10处错误；满分10分）My friend Nick told me a story about his experience back in the US, which was very interested. One day he was having a yard sale and the old man living next door come by to help. As the old man looked over the things on the yard that were to be sold, he stopped at a box of golden ball for Christmas trees. On the box was a card say: 25 cents each. “You will never sell these for that much.” he told Nick. Convinced, Nick has brought the price up to 10 cents a piece. Without a moment’s delay, my neighbor picked up the box but announced, “I’ll take them.”密学校 班级姓名 学号密 封 线 内 不 得 答 题太原五中2017-2018学年度第二学期阶段性练习高一英语答题纸（2018.3.15）I 完形填空(每小题2分，共40分)V 用适当的词或词的适当形式填空 (每小题1分，共10分) 36. ____________________ 37. _____________________ 38. ____________________ 39. _____________________ 40. ____________________ 41. _____________________ 42. _____________________ 43. ______________________ 44. _____________________ 45. ______________________VI. 语篇填空 (每小题1.5分，共15分)46. ______________ 47. _____________ 48. ______________ 49. _____________ 50. ______________ 51. _____________ 52. _______________ 53. _______________ 54. ________________ 55. ________________VII 短文改错 (共10分)My friend Nick told me a story about his experience back in the US, which was very interested. One day he was having a yard sale and the old man living next door come by to help. As the old man looked over the things on the yard that were to be sold, he stopped at abox of golden ball for Christmas trees. On the box was a card say: 25 cents each. “You will never sell these for that much.” he told Nick. Convinced, Nick has brought the price up to 10 cents a piece. Without a moment ’s delay, my neighbor picked up the box but announced, “I’ll take them.”答案：完形填空1-5 ADBBA 6-10 CBDCA 11-15 CDBCA 16-20 DDBCA阅读理解21-25 DCDBB 26-30 BCED F单项选择31-35 BABAB完成句子36.headline 37. celebrities 38. orbits 39. aboard 40. welcome 41.replacing 42. delighted 43. in total44. is similar to 45. believe in语篇填空46. was 47. actually 48. the 49. or 50. to reduce51. cleaner 52. that/which 53. amazing 54. changes 55. patient 短文改错1. 1. interested改为interesting2. the 改为an3. come改为came4. on改为in5. ball 改为balls6. say改为saying7. has去掉8. up 改为down 9. my 改为his10. but改为and。

太原五中2017—2018学年度第二学期阶段性练习高 二 数 学（文）命题、校对：薛亚云 时间：2018.3.28一．填空题: 共12小题，每小题5分，共60分.1. 设(1)=1+,x i yi +其中x ,y 实数,则=x yi +_________2. 若43i z =+，则||z z =_________ 3. 若复数(1i)(i)a -+在复平面内对应的点在第二象限，则实数a 的取值范围是_________4. 设1z ，2C z ∈，则“1z 、2z 中至少有一个数是虚数”是“12z z -是虚数”的_______条件.(充分非必要，必要非充分，充要，既非充分也非必要)5. 复数 等于_____________6. 设复数z 满足11z z +-=i ，则z=___________ 7．若且 ，则 的最小值是_________ 8. 已知 ， 是复数，则下列结论一定正确的有________ ① ② 是虚数 ③ ④9. 设复数z 满足268z i =+（i 是虚数单位），则z 的模为_______.10. 设m R ∈,222(1)i m m m +-+-是纯虚数,其中i 是虚数单位,则m =_______ 11. 下列命题中，正确命题的序号是 ．① 已知，则 ； ② 已知 ，若是纯虚数，则 ； ③ 是虚数的一个充要条件是 ；④ 复数的一个充要条件是 ； ⑤ 若，则 ； ⑥ 若 ，且 ，则 ．12. 若复数 满足，则 ．1.___________________ 7._________________________2.____________________ 8.________________________3.___________________ 9._________________________4.____________________ 10.________________________5.___________________ 11._________________________6.____________________ 12.________________________二．解答题: 共2小题，每题20分，共40分.13. 设是虚数，是实数，且．（1）求及的实部的取值范围；（2）设，那么是不是纯虚数?并说明理由；（3）求的最小值．14. 已知在平行四边形与对应的复数分别是与，两对角线与相交于点．求：（1对应的复数；（2对应的复数；（3）的面积．。

密学校 班级姓名 学号密 封 线 内 不 得 答 题太原五中2017—2018学年度第二学期阶段性练习高 二 英 语命题：王惠 校对：高二外语组 (2018.3.8)I. 单项选择 （20分）1. The shy girl felt ______ when she made some mistakes in her performance. A. amazed B. awkward C. astonished D. amused2. You ______ have come in person — a telephone call would have been enough. A. m ustn’t B. shouldn’t C. couldn’t D. needn’t3. The witness described what he had seen very carefully in order not to ______ any detail. A. leave out B. act out C. pick out D. put out4. He got up late and hurried to his office, ______ the breakfast untouched. A. left B. to leave C. leaving D. having left5. ______ speaking, I would say that about five hundred people attended the opening ceremony. A. Generally B. Roughly C. Honestly D. Constantly6. The Tenth Art Festival held in Jinan ______ to many people from all over the world. A. appealed B. attracted C. fascinated D. attached7. Hearing the news ______ her son lost his life in an accident, the mother ______ tears. A. which; burst out B. which; burst into C. that; burst out D. that; burst into8. ______ the vegetables, Steve then began to dig the ground. A. To Water B. Watered C. Watering D. Having watered9. It takes talent to make a scientist and it also takes ______ if you are to succeed. A. dignity B. sympathy C. ambition D. intelligence 10. The manager ______ the workers how to improve the program since 9 a.m.. A. has been telling B. is telling C. told D. will have told 11. She was ______ good terms with her twin sister, because they were two of a kind. In other words, they were identical each other. A. in; to B. in; with C. on; with D. on; to12. I wish I ______ at my sister ’s wedding last Tuesday, but I was on a business trip in New York then. A. was B. had been C. have been D. am13. ______ seemed surprising to us was ______ he came out first in the speech competition. A. What; that B. What; what C. It; what D. It; that 14. We are living in an age ______ many things are done on computer. A. which B. whose C. when D. that15. ______ with his work in the satellite launch site, he could not spare any time to stay with his parents though they are very old. A. Occupying B. To occupy C. Having occupied D. Occupied 16. In that school, English is compulsory for all students, but French is ______ . A. special B. optional C. regional D. original 17. We would have called a taxi yesterday if Harold ______ us a ride home. A. didn ’t offer B. wouldn ’t offer C. hadn ’t offered D. hasn ’t offered 18. — Have you seen my notebook?— Oh, Jane must have taken it ______; she has the same one as yours. A. by design B. on purpose C. by accident D. by mistake19. Misunderstandings ______ from lack of social communication, unless properly, may lead to serious problems.A. arisen; handlingB. rising; handledC. arising; handledD. risen; handling 20. — Tom went to Beijing for a holiday yesterday. —- ______ We played football together this morning. A. That’s a good point. B. You can’t be serious ! C. I couldn’t agree more. D. I’m not sure about it. II. 完形填空（共20小题；每小题1分，满分20分）Sport used to be like fresh fruit and vegetables. ___21___, football had its season, then it ended, and you had to ___22___ a while to get some more. Now, just as you can ___23___ fresh strawberries all year round, there are major sporting ___24___ taking place somewhere in the world all of the time.Sport seems to be everywhere. Where sport was ___25___ for fun and amateurs, it is now a worldwide obsession (痴迷).What is it that makes sport so ___26___ for so many? First, we seriously ___27___ that sport is something we can all do. Second, sport is dominated by athletes from ___28___ backgrounds. Sports stars are self-made people. This is ___29___ it is a classic means by which those from the poorest backgrounds can ___30___ fame and fortune. Third, we ___31___ the excitement of not knowing who is going to win when ___32___ sport.Television has been absolutely crucial to the growing obsession with sport. It gives increased numbers of people ___33___ to get access to sporting events around the globe. With this, certain sports have ___34___ untold wealth via advertising, advertising sponsorship and fees.“Sport probably does more to unify nations than any politician has ever been capable of,” said Nelson Mandela. The only truly global ___35___ are the Olympics and the World Cup. These great sporting events bring together players and athletes from ___36___ races like no other.___37___, there are signs of ___38___ in this vast, global industry. In football, thepresident of FIFA has suggested ___39___ the World Cup every two years instead of four, and overpaid tennis players and golfers fly endlessly in personal jets from one meaningless tournament to the next. Sport risks ___40___ itself through greed and over-exposure.21. A. For example B. In addition C. Above all D. In short22. A. stay B. hide C. wait D. work23. A. get B. expect C. cover D. make24. A. goods B. events C. interests D. achievements25. A. once B. never C. seldom D. still26. A. enjoyable B. comfortable C. payable D. avoidable27. A. regret B. decide C. believe D. remember28. A. mixed B. cultural C. ordinary D. religious29. A. why B. when C. which D. where30. A. leave B. manage C. value D. seek31. A. add B. prefer C. control D. cause32. A. knowing B. watching C. needing D. finding33. A. dreams B. strengths C. gifts D. chances34. A. acquired B. shared C. accepted D. missed35. A. tours B. occasions C. markets D. problems36. A. rich B. poor C. different D. similar37. A. Therefore B. However C. Otherwise D. Besides38. A. happiness B. suffering C. improvement D. anxiety39. A. changing B. refusing C. staging D. advertising40. A. blaming B. catching C. killing D. punishingIII. 阅读理解（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，从每题所给的四个选项（A、B、C和D）中，选出最佳选项。

山西省太原市第五中学2017-2018学年高二数学下学期3月第二周考试试题 文一．选择题：共8小题，每小题5分，共40分，每小题只有一个正确答案．1．根据右侧样本数据得到的回归方程为 ˆy bx a =+ ,则( ) A.a>0,b<0 B.a>0,b>0 C.a<0,b<0 D.a<0,b>02. 已知变量具有线性相关关系, 测得的一组数据如下:, 其回归方程为ˆ 1.4yx a =+, 则的值等于（ ） A ．0.9 B ．0.8 C ．0.6 D ．0.23. 以下有关线性回归分析的说法不正确的是( )A ．通过最小二乘法得到的线性回归直线经过样本的中心B ．用最小二乘法求回归直线方程，是寻求使21()n i ii y b x a =--∑最小的a, b 的值C ．相关系数r 越小，表明两个变量相关性越弱D ．^22121()1()n i i i n ii y y R y y ==-=--∑∑—越接近1，表明回归的效果越好 4. 用反证法证明命题“设a,b 为实数,则方程30x ax b ++=至少有一个实根”时,要作的假设是( )A.方程30x ax b ++=没有实根B.方程30x ax b ++=至多有一个实根C.方程30x ax b ++=至多有两个实根D.方程30x ax b ++=恰好有两个实根5. 在整数集Z 中, 被5除所得余数为k 的所有整数组成一个“类”, 记为[k], 即[k]={5n+k|n∈Z}, k=0, 1, 2, 3, 4. 给出如下四个结论:①2 011∈[1];②-3∈[3];③Z=[0]∪[1]∪[2]∪[3]∪[4];④“整数a, b属于同一‘类’”的充要条件是“a-b∈[0]”.其中, 正确结论的个数是( )A. 1B. 2C. 3D. 46. 设[x]表示不大于x的最大整数, 则对任意实数x, y, 有( )A. [-x]=-[x]B. [2x]=2[x]C. [x+y]≤[x]+[y]D. [x-y]≤[x]-[y]7. 甲、乙、丙三位同学被问到是否去过A,B,C三个城市时,甲说:我去过的城市比乙多,但没去过B城市;乙说:我没去过C城市;丙说:我们三人去过同一城市.由此可判断乙去过的城市为( )A. A城市B. B城市C. C城市D. 都没去过8. 1>a的最大值是( ).A.13B.12C.11D.10二．填空题: 共4小题，每小题5分，共20分.9. 已知集合{a,b,c}={0,1,2},且下列三个关系:①a≠2;②b=2;③c≠0有且只有一个正确,则100a+10b+c等于________.10. 无限循环小数可以化为有理数，如：11350.1,0.13,0.015999333∙∙∙∙∙===，请归纳出11. 意大利数学家斐波那契在研究兔子繁殖问题时，发现这样一组数：1,1, 2,3, 5,8, 13，其中从第三个数起，每一个数都等于它前面两个数的和，该数列有很多奇妙的性质. 比如：随着数列项数的增加，前一项与后一项之比越逼近黄金分割0.6180339887…，人们称该数列为“斐波那契数列”. 若把该数列}{n a 的每一项除以4所得的余数按相对应的顺序组成新数列}{n b ，在数列}{n b 中第2014项的值为 ；数列中，第2014个值为1的项的序号是 .12. 平面直角坐标系下直线的方程为Ax +By+C=0（ +≠0），用类比的方法推测空间直角坐标系下平面的方程为______________________.三．解答题: 共2小题，13题20分，14题20分，共40分.13. 为调查某地区老年人是否需要志愿者提供帮助, 用简单随机抽样方法从该地区调查了500位老年人, 结果如下:(Ⅰ) 估计该地区老年人中, 需要志愿者提供帮助的老年人的比例;(Ⅱ) 能否有99%的把握认为该地区的老年人是否需要志愿者提供帮助与性别有关?(Ⅲ) 根据(Ⅱ)的结论, 能否提出更好的调查方法来估计该地区的老年人中, 需要志愿者提供帮助的老年人的比例?说明理由.附:22()()()()()n ad bc K a b c d a c b d -=++++14. 如图,在三棱锥P-ABC 中,D,E,F 分别为棱PC,AC,AB 的中点.已知PA⊥AC,PA=6,BC=8,DF=5. 求证:(1)直线PA∥平面DEF;(2)平面BDE⊥平面ABC.。

太原五中2017—2018学年度第二学期阶段性练习高二数学(理)命题、校对：刘洪柱时间：2018.03.281．观察下列各式：a＋b＝1，a2＋b2＝3，a3＋b3＝4，a4＋b4＝7，a5＋b5＝11，…，则a10＋b10＝( )A．28 B．76 C．123 D．1992．下列四类函数中，具有性质“对任意的x＞0，y＞0，函数f(x)满足[f(x)]y＝f(xy)”的是( )A．指数函数 B．对数函数 C．一次函数 D．余弦函数3．在等差数列{a n}中，若a10＝0，则有等式a1＋a2＋…＋a n＝a1＋a2＋…＋a19－n(n<19且n∈N*)成立，类比上述性质，在等比数列{b n}中，若b11＝1，则有( )A．b1·b2·…·b n＝b1·b2·…·b19－nB．b1·b2·…·b n＝b1·b2·…·b21－nC．b1＋b2＋…＋b n＝b1＋b2＋…＋b19－nD．b1＋b2＋…＋b n＝b1＋b2＋…＋b21－n4．在直角坐标系xOy中，一个质点从A(a1，a2)出发沿图2中路线依次经过B(a3，a4)，C(a5，a6)，D(a7，a8)，…，按此规律一直运动下去，则a2 015＋a2 016＋a2 017＝( )A．1 006 B．1 007 C．1 008 D．1 0095．分析法又叫执果索因法，若使用分析法证明：“设a>b>c，且a＋b＋c＝0，求证：b2－ac<3a”最终的索因应是( )A．a－b>0 B．a－c>0 C．(a－b)(a－c)>0 D．(a－b)(a－c)<06．若P＝a＋a＋7，Q＝a＋3＋a＋4(a≥0)，则P，Q的大小关系是( )A ．P >QB ．P ＝QC ．P <QD ．由a 的取值确定7．用数学归纳法证明“5n－2n能被3整除”的第二步中，当n ＝k ＋1时，为了使用假设，应将5k ＋1－2k ＋1变形为( )A ．(5k－2k)＋4×5k－2kB ．5(5k －2k )＋3×2kC ．(5－2)(5k－2k) D ．2(5k－2k)－3×5k8．已知n 为正偶数，用数学归纳法证明1－12＋13－14＋…－1n ＝2⎝ ⎛⎭⎪⎫1n ＋2＋1n ＋4＋…＋12n 时，若已假设n ＝k (k ≥2且k 为偶数)时等式成立，则还需要用归纳假设再证n ＝________时等式成立．( )A ．k ＋1B ．k ＋2C ．2k ＋2D ．2(k ＋2)9．已知圆的方程是x 2＋y 2＝r 2，则经过圆上一点M (x 0，y 0)的切线方程为x 0x ＋y 0y ＝r 2.类比上述性质，可以得到椭圆x 2a 2＋y 2b2＝1类似的性质为________．10．当n ＝1时，有(a －b )(a ＋b )＝a 2－b 2，当n ＝2时，有(a －b )(a 2＋ab ＋b 2)＝a 3－b 3，当n ＝3时，有(a －b )(a 3＋a 2b ＋ab 2＋b 3)＝a 4－b 4，当n ∈N *时，你能得到的结论是__________.11．请阅读下列材料：若两个正实数a 1，a 2满足a 21＋a 22＝1，求证：a 1＋a 2≤ 2. 证明：构造函数f (x )＝(x －a 1)2＋(x －a 2)2＝2x 2－2(a 1＋a 2)x ＋1，因为对一切实数x ，恒有f (x )≥0，所以Δ≤0，从而得4(a 1＋a 2)2－8≤0，所以a 1＋a 2≤ 2.根据上述证明方法，若n 个正实数满足a 21＋a 22＋…＋a 2n ＝1时，你能得到的结论是________． 12．如图3，如果一个凸多面体是n (n ∈N *)棱锥，那么这个凸多面体的所有顶点所确定的直线共有________条，这些直线共有f (n )对异面直线，则f (4)＝________，f (n )＝__________.(答案用数字或n 的解析式表示)13．(本小题满分12分)等差数列{a n }的前n 项和为S n ，a 1＝1＋2，S 3＝9＋3 2. (1)求数列{a n }的通项a n 与前n 项和S n ；(2)设b n ＝S nn(n ∈N *)，求证：数列{b n }中任意不同的三项都不可能成为等比数列．14．(本小题满分14分)在各项为正的数列{a n }中，数列的前n 项和S n 满足S n ＝12⎝ ⎛⎭⎪⎫a n ＋1a n .(1)求a 1，a 2，a 3；(2)由(1)猜想到数列{a n }的通项公式，并用数学归纳法证明你的猜想． 15.已知函数).()()(2R m e m x mx x f x ∈+-=- （1）讨论)(x f 的单调性；（2）当0>m 时，证明：不等式x x f m )(≤在]m11,0+（上恒成立.9.________________ 10.____________________ 11._________________ 11.____________________ 13．等差数列{a n}的前n项和为S n，a1＝1＋2，S3＝9＋3 2.(1)求数列{a n}的通项a n与前n项和S n；(2)设b n＝S nn(n∈N*)，求证：数列{b n}中任意不同的三项都不可能成为等比数列．14．在各项为正的数列{a n }中，数列的前n 项和S n 满足S n ＝12⎝ ⎛⎭⎪⎫a n ＋1a n .(1)求a 1，a 2，a 3；(2)由(1)猜想到数列{a n }的通项公式，并用数学归纳法证明你的猜想．15.已知函数).()()(2R m e m x mx x f x ∈+-=- （1）讨论)(x f 的单调性；（2）当0>m 时，证明：不等式x x f m )(≤在]m11,0+（上恒成立.。

太原五中2017—2018学年度第二学期阶段性练习高 二 数 学(理)命题、校对：王萍 时间：2018.03.211.将和式的极限)0( (32)1lim1>+++++∞→p nnP ppppn 表示成定积分（ ）A ．dx x⎰11 B ．dx x p⎰1C ．dx xp⎰1)1(D ．dx nx p⎰1)(2.已知⎰=211xdx S ，⎰=212dx e S x，⎰=2123dx x S ，则1S ，2S ，3S 的大小关系为（ ）A ．321S S S <<B ．231S S S <<C ．123S S S <<D ．132S S S << 3. 给出以下命题：（1）若()0ba f x d x >⎰，则f （x ）＞0； （2）2s in 40x d x π=⎰；（3） f (x )的原函数为F （x ），且F （x ）是以T 为周期的函数，则；0()()aa +TTf x d x f x d x =⎰⎰其中正确命题的个数为（ ） A ． 0 B ．1 C ．2 D ．34.已知(x ln x )′＝ln x ＋1，则⎠⎛1e ln x d x ＝( )A ．1B ．eC ．e －1D ．e ＋15.已知甲、乙两车由同一起点同时出发，并沿同一路线(假定为直线)行驶．甲车、乙车的速度曲线分别为v 甲和v 乙(如图所示)．那么对于图中给定的t 0和t 1，下列判断中正确的是( )A ．在t 1时刻，甲车在乙车前面B ．在t 1时刻，甲车在乙车后面C ．在t 0时刻，两车的位置相同D ．t 0时刻后，乙车在甲车前面6. 由曲线22x y -=，直线x y =及x 轴所围成的封闭图形(图中的阴影部分)的面积是( ) A.29 B.67324+C.67 D. 12+7.若⎪⎩⎪⎨⎧≤+>-=⎰)0(,1)0(),4()(21x dt t e x x f x f x ，则(2018)f 等于（ ）A ．0B ．2lnC ．2ln 2e-+ D ．2ln 1+8.在平面直角坐标系xOy 中，将直线y=x 与直线x=1及x 轴所围成的图形绕x 轴旋转一周得到一个圆锥，圆锥的体积V圆锥=3|310312πππ==⎰xdx x ．据此类比：将曲线y=2lnx 与直线y=1及x 轴、y 轴所围成的图形绕y 轴旋转一周得到一个旋转体，该旋转体的体积V=( ).A.e3πB. e -1π（）C.e πD.2e-1π（）9.在曲线y ＝x 2 (x ≥0)上某一点A 处作一切线l则切线l 的方程为____ 10若f(x)是一次函数，且10⎰f(x)dx ＝5，10⎰xf(x)dx ＝176，那么21⎰f(x)xdx 的值是_____． 11. 已知函数f (x )＝e x －1，直线l 1：x ＝1，l 2：y ＝e t －1(t 为常数，且0≤t ≤1)．直线l 1，l 2与函数f (x )的图象围成的封闭图形如图中区域Ⅱ所示，其面积用S 2表示．直线l 2，y 轴与函数f (x )的图象围成的封闭图形如图中区域Ⅰ所示，其面积用S 1表示．当t 变化时，阴影部分的面积的最小值为________．12.设12,x x R ∈，那么212212-e )(e )x x x x +-（的最小值是__________答题纸9. 10. ___________________ 11. 12. ___________________13.有一条直线与抛物线y ＝x 2相交于A 、B 两点，线段AB 与抛物线所围成图形的面积恒等于43，求线段AB 的中点P 的轨迹方程14. 已知函数f(x)=ln(x+1),g(x)=x2+bx+1(b为常数),h(x)=f(x)-g(x)．(1)若存在过原点的直线与函数f(x)、g(x)的图象相切,求实数b的值；(2)当b=-2时，1x∃、x2∈[0,1]使得h(x1)-h(x2)≥M成立,求M的最大值；(3)若函数h(x)的图象与x轴有两个不同的交点A(x1,0)、B(x2,0),且0<x1<x2,求证：h′（221xx+）<0．。

高一数学 第1页,共2页 高一数学 第2页,共2页密学校 班级姓名 学号密 封 线 内 不 得 答 题太原五中2017-2018学年度第二学期阶段性练习高 一 数 学出题人、校对人：张福兰（2018年3月21日）一、选择题（每小题6分,共48分,每小题只有一个正确答案）1. 已知sin ⎝ ⎛⎭⎪⎫π6－α＝cos ⎝ ⎛⎭⎪⎫π6＋α，则cos 2α＝A ．1B ．－1 C.12 D ．02.19π5πcos cos sin sin 24242424+=ππA.2 B. 2- C. 12- D. -3.函数f (x )＝sin 2x ＋sin x cos x ＋1的最小正周期是A.2πB.πC.23π D.2π4. 已知函数()3sin 24cos 2,f x x x =+ ([0,])4x ∈π的值域为A.3[,1]5B. [5,5]-C. [3,5]D.[4,5]5.若0<α<π2，－π2<β<0，cos(π4＋α)＝13，cos(π4－β2)＝33，则cos(α＋β2)＝( )A.33 B ．－33 C.539 D ．－696. 函数25()sin 22cos(2)sin 3412⎛⎫=+-+ ⎪⎝⎭f x x x πππ的图象为C ，如下结论中正确的是 A.图象C 关于直线11π12x =对称；B.图象C 关于点2π03⎛⎫ ⎪⎝⎭，对称； C.函数()f x 在区间ππ63⎛⎫- ⎪⎝⎭，内是增函数；D.函数()3+f x π为奇函数．7. 设(0,),(0,),22ππαβ∈∈且1sin tan ,cos βαβ+=则（ ） A. 22παβ-=B. 22παβ+=C. 32παβ-=D. 32παβ+=8. 当α为锐角时，2M 12sin ()42πα=--, 2N 2tan tan tan 22αα=+α⋅,则M 与N 的大小关系是A. M<NB.M=NC. M>ND.大小与α有关二、填空题（每小题6分,共24分）9.已知()sin 2f x x x =的图象向右平移ϕ（02ϕπ<<）个单位后，所得函数为偶函数，则ϕ=____________．10.已知0tan 20sin 20a +=，则a =______11. 在△ABC 中,4sinA+2cosB=1，4cosA+2sinB=3 3 ，则C=12.如图，圆O 与x 轴的正半轴的交点为A，点C ，B 在圆O 上，且点C 位于第一象限，点B 的坐标为⎝⎛⎭⎫1213，－513，∠AOC ＝α，若|BC |＝1，则3cos 2α2－sin α2cos α2－32的值为________． 三．解答题（共28分）13.已知0ω>，函数22()2sin cos 4cos f x x x x x =-⋅+ωωωω (1)求函数y ＝f (x )的值域； (2)若f (x )在区间2[,]63ππ上为减函数，求ω的最大值．。

太原五中2017-2018学年度第二学期阶段性练习高一物理出题、校对：易红波、郑容、于佳欢(2018.3.20)一、选择题（本大题共10个小题，共40分。

其中1-6题只有一个选项符合题意、7-10题有多个选项符合题意，每小题4分，选对不全得2分，错选或不选得0分。

）1.物体做匀速圆周运动，关于它的周期的说法中正确的是（）A.物体的线速度越大，它的周期越小B.物体的角速度越大，它的周期越小C.物体的运动半径越大，它的周期越大D.物体运动的线速度和半径越大，它的周期越小2.如图所示，在水平圆盘上，沿半径方向放置用细线相连的两物体A和B，它们与圆盘间的摩擦因数相同，当圆盘转速加大到两物体刚要发生滑动时烧断细线，则两个物体将要发生的运动情况是（）A.两物体仍随圆盘一起转动，不会发生滑动B.只有A仍随圆盘一起转动，不会发生滑动C.两物体均沿半径方向滑动，A靠近圆心、B远离圆心D.两物体均沿半径方向滑动，A、B都远离圆心3.如图所示是自行车的轮盘与车轴上的飞轮之间的链条传动装置。

P是轮盘的一个齿，Q是飞轮上的一个齿。

下列说法中正确的是（）A.P、Q两点角速度大小相等B.P、Q两点向心加速度大小相等C.P点线速度大于Q点线速度9.套着弹簧与小球P的粗糙细杆固定在如图所示的装置上，弹簧的一端固定在装置的A点，另一端连接一质量为m的小球P，当整个装置静止时，弹簧处于拉伸状态，小球P离A点的距离为4L，离B点的距离为2L，那么当整个装置绕竖直中心轴OO'以角速度ω匀速转动时，下列说法正确的是（）A.小球P一定会更靠近B点B.小球P可能相对B点距离不变C.小球P受到的合力可能为mω2LD.小球受到的静摩擦力一定变小10.如图为某品牌自行车的部分结构。

A、B、C分别是飞轮边缘、大齿盘边缘和链条上一个点。

现在提起自行车后轮，转动脚蹬子，使大齿盘和飞轮在链条带动下转动，则下列说法正确的是（）A.A、B、C三点线速度大小相等B.A、B两点的角速度大小相等C.A、B两点的向心加速度与飞轮、大齿盘半径成反比D.由图中信息，A、B两点的角速度之比为1∶3二、实验题（本题共1个小题，每空2分，共8分）11.（8分）一物理兴趣小组利用学校实验室的数字实验系统探究物体作圆周运动时向心力与角速度、半径的关系。

密学校 班级姓名 学号密封 线 内 不 得 答 题太原五中2017—2018学年度第二学期阶段性练习高 二 数 学(理)时间：2018.03.141．当a >0时，函数f (x )＝(x 2－2ax )e x 的图象大致是( )2.已知函数f (x )＝x 3－4x 2＋5x －4.则经过A (2，－2)的曲线f (x )的切线方程为（ ） A. x －y －4＝0 B. x －y －4＝0，或y －2＝0C. x ＋y －4＝0D. x －y －4＝0，或y ＋2＝0.3．已知f (x )＝x 3＋3ax 2＋bx ＋a 2，在x ＝－1时有极值0，则a+b ＝（ ）A. 11B. 4C. 4或 11D. －74.曲线 1(0)yx x=>在点 00(,)P x y 处的切线为 l ．若直线l 与x ，y 轴的交点分别为A ，B ，则△OAB 的周长的最小值为( )A.4+ B.C.2D.5+5．已知函数f (x )＝x (ln x －ax )有两个极值点，则实数a 的取值范围是( )A.(－∞，0) B .(0，12) C.(0,1) D.(0，＋∞)．6.已知函数3()ln ),f x x x =-则对于任意实数,(0)a b a b +≠,则()()f a f b a b++的值为（ ）A ．恒正 B.恒等于0 C ．恒负 D. 不确定7. 奇函数()f x 定义域为()(),00,ππ-,其导函数是()'f x .当0x π<<时,有()()'sin cos 0f x x fx x-<,则关于的不等式()sin 4fx x π⎛⎫<⎪⎝⎭的解集为（ ）A ．,4ππ⎛⎫⎪⎝⎭ B ．,,44ππππ⎛⎫⎛⎫-- ⎪⎪⎝⎭⎝⎭ C ．,00,44ππ⎛⎫⎛⎫-⎪ ⎪⎝⎭⎝⎭ D ．,0,44πππ⎛⎫⎛⎫- ⎪ ⎪⎝⎭⎝⎭8．若曲线21:C y x =与曲线2:x C y a e =(0)a >存在公共切线,则a 的取值范围为（ ）A ．28[,)e+∞ B ．28(0,]eC ．24[,)e+∞ D ．24(0,]e9.设函数21()ln (1||)1f x x x=+-+,则使得()(21)f x f x >-成立的的取值范围为10．已知f (x )＝x e x ，g (x )＝－(x ＋1)2＋a ，若∃x 1，x 2∈R ，使得f (x 2)≤g (x 1)成立，则实数a 的取值范围是________ .11. 设函数x x x f sin 1)(-=在0x x =处取得极值,则 )2cos 1)(1(020x x ++ =12.如图，已知正方形ABCD 的边长为1，过正方形中心O 的直线MN 分别交正方形的边AB ，CD 于点M ，N ，则当MNBN 取最小值时，CN ＝_______.密学校 班级姓名 学号密 封 线 内 不 得 答 题答题纸9. 10.11. 12.13. 如图所示，等腰三角形△ABC 的底边AB=CD=3，点E 是线段BD 上异于B 、D 的动点，点F 在BC 边上，且E F ⊥AB ，现沿EF 将△BEF 折起到△PEF 的位置，使P E ⊥AE ，记BE=x ，V （x ）表示四棱锥P-ACEF 的体积。

太原五中2017-2018学年度第二学期阶段性练习高一英语（2018.3.8）一、完型填空。

阅读下面短文，从短文后各题所给的A.B.C和D四个选项中，选出可以填入空自处的最佳选项。

（每小题2分，共40）As she had arthritis (关节炎), my grandmother had to use a walking stick to walk around. She was __1__ to my grandfather and always tried her best to __2__ his breakfast, lunch and dinner. He was a farmer. He cared for her __3__ as he cared for his land.My grandmother couldn’t get out and work in the yard __4__ other people. She couldn't move without __5__. There was a flower garden outside in the front yard. __6__ she sat on the couch to read or watch TV, she could __7__ her flowers. Different kinds of __8__ had been placed there lovingly by my grandfather.My grandfather, who was so __9__ with the daily running of the fields, caring for the farm animals and his other full-time job, had __10__ time left to take care of the flower garden. __11__, the garden was always neat. There were never any weeds (野草) to pull up.My grandmother became crippled. (跛腿的) with arthritis very early in her life, but loved her flowers and plants just as __12__ as my grandfather loved his land. The flower garden __13__ to flourish year after year.The year when my grandmother __14__ was hard on everyone, especially my grandfather, Her death also seemed to__15__her flower garden.It was that year, for the first time, that I __16__the weeds. It was then that I __17__ grandfather was always taking care of my grandmother's flower garden very __18__ when she was alive. He knew how much she loved her flowers, knew how much she __19__ to her family and husband. She asked for so little and gave so much; grandfather was there, quietly tending to her flower garden, showing her how __20__ he was with her and how much he loved her.1. A. known B. supposed C. devoted D. used2. A. organize B. prepare C. classify D. settle3. A. suddenly B. occasionally C. rudely D. tenderly4. A. like B. with C. after D. for5. A. confidence B. doubt C. help D. question6. A. Where B. When C. Why D. How7. A. water B. enjoy C. taste D. touch8. A. vegetables B. fruits C. trees D. flowers9. A. busy B. angry C. strict D. familiar 10. A. large B. great C. small D. little11. A. However B. Otherwise C. Meanwhile D. Therefore12. A. often B. much C. soon D. fast13. A. tried B. refused C. continued D. stopped14. A. passed away B. worked out C. broke down D. burst open15. A. amaze B. remark C. connect D. affect16. A. left B. noticed C. pulled D. ruined17. A. suggested B. insisted C. realized D. demanded18. A. anxiously B. carefully C. impatiently D. lonely19. A. introduced B. formed C. returned D. gave20. A. pleased B. surprised C. embarrassed D. shocked二、阅读理解。

2017-2018学年第一部分完形填空（共20题，每题1分，满分20分）阅读下面短文，从短文后所给各题的四个选项（A、B、C和D）中，选出可以填入空白处的最佳选项。

I went into Walmart to grab some things. A woman was asking people for something and my 1 was to get my things and go. She asked me to 2 .I figured she was just asking for 3__ and I was going to 4 let her know I didn't have any cash on me. Typically, I don't 5 giving a few dollars if I 6 some and what they do with it is their business.But I 7 her. She had groceries in her cart(购物车）and asked for help to buy food for her family. She said her daughter had been 8 for some time and she had 6 grandchildren to take care of. I really felt 9 for her. She was 10 .I know stories like this, for I work in an inner-city school and my husband works in a hospital. The responsibility for 11 grand-babies does fall in the 12 . She asked me if I would help her buy groceries.I looked at what I had in my 13 compared to what she had. She had shopped smart and had healthy food: bananas, meat, pancakes, etc. —practical things for making 14 and feeding children. I told her yes, and went to get diapers (纸尿裤）for the babies. She sobbed and 15 me.Yesterday, I turned 50, had my healthy family by my side and 16 tons of crawfish(刺龙虾).Well, I checked my humanity today. This woman had to get food and even if she wasn't telling the 17 , I didn't even care in the least. She is human, I am human and today she helped me realize a few things and I hope I 18 her. She won’t have lo worry about food. I didn’t expect this today 19 obviously I was called to it and was right where I needed to be. I felt very 20 .1.A. goal B. dream C. request D. hobby2.A. agree B. stop C. return D. check3.A. support B. service C. money D. advice4.A excitedly B. bravely C. politely D. proudly5.A. consider B. like C. risk D. mind6. A. save B. collect C. have D. see7. A. listened to B. looked for C. attended to D. pointed to8. A. homeless B. dead C. guilty D. lonely9. A. sorry B. angry C. grateful D. mad10. A. watching B. leaving C. failing D. crying11. A. understanding B. finding C. raising D.accepting12. A. friends B. grandparents C. shelter ernment13. A. cart B. wallet C. office D. car14. A. reports B. trips C. experiment D. meals15. A. paid B. answered C. thanked D. trusted16. A. caught B. sold C. ordered D. ate17. A. truth B. direction C. experience D. difference18. A. visited B. helped C. missed D.fed19. A. so B. but C. because D. for20. A. confused B. disappointed C. calm D. happy第二部分阅读理解（共两节，满分30分）第一节阅读下面短文，从短文后各题所给的四个选项中选出最佳选项（共 10题：每小题2分，满分20分).AHave you ever seen a redwood? They are tall! They are also called Sequoias, a common name for a group of big, grand evergreen trees of the cypress (柏树) family. They can grow up to 100 feet tall! The Sequoias are so big that they are even bigger than whales! If you saw a picture of a full-grown Sequoia with a person standing next to it, that person would only appear as a large dot! Even if you saw the person well enough to identify him or her, the Sequoia would be such a huge background that you wouldn't know it was a tree! The circumference (周长)of a Sequoia is so large that it would lake at least ten people to join hands around it to match it!The Sequoia can be found on the western slopes of the Sierra Nevada. A Sequoia weighs as much as 2,500 metric tons! If you want to know how old a tree is after it has been cut down，you can look at the stump(残杆)，and count the number of ringsit has. Once you figure that out, you’ll know how old the tree is. Some Sequoia trees arc 2,300 years of age while others are even older and can live up to 4,000 years! The leaves of a Giant Sequoia are close to the branches and the bark is often very soft. The wood is light, and highly resistant(有抵抗力的）to insects and fire.At one time, the most popular Sequoia was the dawn redwood. They are about 100 feet high and have a diameter (直径)of about 6 feet.21.The first paragraph mainly tells us ________ .A.the family that redwoods belong toB.another name for redwoodsC. how tall and huge redwoods areD. how to identify a redwood in the wild22. To know how old a Sequoia is, one needs to .A. chop it down and count how many rings there are in its trunkB. make clear the exact length of its circumference at the baseC. dig out all of its roots and examine its root system carefullyD. measure its diameter and height and then figure out its weight23. From the text, we can infer that .A. redwoods don’t catch fir e easilyB. one cannot identify a person standing before a SequoiaC. Sequoias can live up to at most 2.300 yearsD. the dawn redwood is the tallest Sequoia tree24. Which of the following about the Sequoias is NOT mentioned in the text?A. Where they can be found.B. What they look like.C. How long they can live.D. What functions they have.25. This text is most likely taken from a book named .A. Photos Taken in the ForestB. Travel in the ForestC. Wonders of the WorldD. Human Geography OverviewB"Coral Reef Adventure" follows the rea-life expedition (考察）of ocean explorers and underwater filmmakers Howard and Michele Hall. Using large cameras, the Halls guide us to the islands and waters of the South Pacific. They will show us the health and bea uty of coral reefs in documents. On the big screen, you’ll feel like you’re diving and exploring right alongside them.Howard and Michele have been diving down to coral reefs for almost three decades, but in recent years, they have noticed the decline of their favorite reefs. They think they should take some action so they set out for the South Pacific. They hope the pictures they bring back will raise awareness about the danger that coral reefs face, and the health of the global oceans.The Halls visit many reefs and film many interesting reef inhabitants (栖居动物).You’ll dive down to the deep reefs of the Twilight Zone, a place no one else has ever been to. You'll swim with hundreds of white reef sharks. But sadly, you'll also swim through large death coral areas and learn with the Halls how our actions may cause these devastating results.Along their journey the Halls meet scientists working to save the reefs. In Fiji, they are guided to the beautifully untouched reefs of the country. In Tahiti, the Halls join a local activity of Reef Check, an international organization of divers who help study local coral resources. Finally, in Rangiroa Howard alone searches for the huge schools of sharks which are well known to live there. If these sharks still swim in the waters of Rangiroa, that's a good sign for the health of the whole ecosystem (生态系统).26. The Halls set out for South Pacific in order to .A. study the white reef sharks thereB. go for a trip there and join a local activityC. work together with scientists there to save the reefsD. take pictures there to warn people of the danger that coral reefs face27. The underlined word "devastating" in the third paragraph probably means .A. excitingB. convincingC. terribleD. natural28. From the text, we can learn that .A. the Halls are the first to explore the Twilight ZoneB. the journey proves that the global ecosystem is extremely goodC. no one has ever been to the coral reefs in FijiD. Rangiroa is the biggest habitat for sharks29. "Coral Reef Adventure" is .A. a book written by the HallsB. a documentary film directed by the HallsC. an organization to study the coral reefsD. an activity for people to go for deep sea adventures30. Which of the following is TRUE about the Halls' journey?A. All the activities are finished together by the Halls.B. The last stop of their journey is Rangiroa.C. their journey is financially supported by the Reef Check.D. They have done all the research by themselves.第二节（共5小题：每小题2分，满分10分）根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。