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高中物理必修3物理 全册全单元精选试卷试卷（word 版含答案）一、必修第3册 静电场及其应用解答题易错题培优（难）1．（1）科学家发现，除了类似太阳系的恒星-行星系统，还存在许多双星系统，通过对它们的研究，使我们对宇宙有了较深刻的认识．双星系统是由两个星体构成，其中每个星体的线度（直径）都远小于两星体间的距离，一般双星系统距离其它星体很远，可以当做孤立系统处理．已知某双星系统中每个星体的质量都是M 0，两者相距L ，它们正围绕两者连线的中点做匀速圆周运动，引力常量为G ．①求该双星系统中每个星体的线速度大小v ；②如果质量分别为m 1和m 2的质点相距为r 时，它们之间的引力势能的表达式为12p m m E Gr=-，求该双星系统的机械能． （2）微观世界与宏观世界往往存在奇妙的相似性．对于氢原子模型，因为原子核的质量远大于电子质量，可以忽略原子核的运动，形成类似天文学中的恒星-行星系统，记为模型Ⅰ．另一种模型认为氢原子的核外电子并非绕核旋转，而是类似天文学中的双星系统，核外电子和原子核依靠库仑力作用使它们同时绕彼此连线上某一点做匀速圆周运动，记为模型Ⅱ．假设核外电子的质量为m ，氢原子核的质量为M ，二者相距为r ，静电力常量为k ，电子和氢原子核的电荷量均为e ．已知电荷量分别为+q 1和-q 2的点电荷相距为r 时，它们之间的电势能的表达式为12p q q E kr=-． ①模型Ⅰ、Ⅱ中系统的能量分别用E Ⅰ、 E Ⅱ表示，请推理分析，比较E Ⅰ、 E Ⅱ的大小关系； ②模型Ⅰ、Ⅱ中电子做匀速圆周运动的线速度分别用v Ⅰ、v Ⅱ表示，通常情况下氢原子的研究采用模型Ⅰ的方案，请从线速度的角度分析这样做的合理性．【答案】（1）①v =②202M G L -（2）①2-2ke r②模型Ⅰ的简化是合理的【解析】（1）① 22002/2M M v G L L =，解得 v =②双星系统的动能2200k 0012222GM GM E M v M L L =⨯==，双星系统的引力势能20P GM E L =-，该双星系统的机械能E=E k +E p =202M G L - （2）①对于模型Ⅰ：22I 2mv ke r r =，此时电子的动能E k Ⅰ=22ke r又因电势能2pI e E k r =-，所以E Ⅰ= E k Ⅰ+E p Ⅰ=2-2ke r对于模型Ⅱ：对电子有：22121mvker r=，解得22112mv rrke=对于原子核有：22222Mvker r=，解得22222Mv rrke=因为r1+r2=r，所以有22221222+mv r Mv rr ke ke=解得E kⅡ=2 221211222ke mv Mvr+=又因电势能2peE kr=-Ⅱ，所以EⅡ= E kⅡ+E pⅡ=2-2ker即模型Ⅰ、Ⅱ中系统的能量相等，均为2 -2 ker②解法一：模型Ⅰ中：对于电子绕原子核的运动有22II2=mvkem vr rω=，解得2I2=kevm rω模型Ⅱ中：对电子有：22II1II21=mvkem vr rω=，解得2II21=kevm rω对于原子核有：22222=ke MvM vr rω=，因ω1=ω2，所以mvⅡ=Mv又因原子核的质量M远大于电子的质量m，所以vⅡ>>v，所以可视为M静止不动，因此ω1=ω2=ω，即可视为vⅠ=vⅡ．故从线速度的角度分析模型Ⅰ的简化是合理的．②解法二：模型Ⅰ中：对于电子绕原子核的运动有22I2mvker r=，解得Iv模型Ⅱ中：库仑力提供向心力：222122=kemr Mrrωω== (1)解得12=r Mr m；又因为r1+r2=r所以1=Mrm M+2=mrm M+带入（1）式：ω=所以：1v r ω=Ⅱ2v r ω=又因原子核的质量M 远大于电子的质量m ，所以v Ⅱ>>v ，所以可视为M 静止不动；故从线速度的角度分析模型Ⅰ的简化是合理的．2．我们可以借鉴研究静电场的方法来研究地球周围空间的引力场，如用“引力场强度”、“引力势”的概念描述引力场。
M1-M6 B3 Cultural Corner译文M1B3 Cultural Corner译文The European Union欧盟What Is the European Union?欧盟是什么？The European Union is an organisation of European countries.欧盟是欧洲各国的一个组织。
The countries are independent and are governed in different ways.欧洲各国各自独立，国家管理各不相同。
In the United Kingdom, for example, the head of state is a king or queen.例如，英国的国家元首是国王或女王，In France, on the other hand, the head of state is a president. 而法国的元首是总统。
But each of them sends representatives to the European Parliament, which has some control over what happens in each of the member countries.但每个国家都向欧盟委员会派遣代表，欧盟委员会负责管理各个成员国的事务。
How Did It Start?欧盟是如何开始的？The idea of the European Union began in the 1950s.创建欧盟这一想法始于二十世纪五十年代。
The first members were France, Germany, Belgium, Luxembourg, the Netherlands and Italy. 最初的成员国有法国、德国、比利时、卢森堡、荷兰和意大利。
Little by little, the number increased during the second half of the twentieth century. 逐渐地，成员国在二十世纪后半叶不断增加。
M1 My First Day at Senior High【词性转换】1. enthusiastic adj. 热心的，热情的→enthusiasm n. 心；热情2. amazing adj. 令人惊异的→ amazed adj. 感到吃惊的→ amaze v. 使吃惊→ amazement n. 惊愕，惊异3. information n. 信息→ inform vt. 通知，告知4. instruction n. 指示，用法说明(常用复数)→ instruct v. 教导，命令，指示5. boring adj. 令人厌烦的→ bored adj.厌倦的，烦闷的→ bore vt. 使厌烦6. embarrass adj. 尴尬的，难堪的→ embarrass v. 使困窘，使局促不安→ embarrassing adj. 令人为难的→ embarrassment n. 窘迫；为难7. behaviour n. 行为，举止→ behave v. 举动，举止8. description n. 描述；形容；描写→ describe vt. 描写，记述9. impress vt. 使(人)印象深刻；使铭记→ impression n. 印象，感想→ impressive adj. 令人印象深刻的，令人赞叹的；令人敬佩的10. correction n．纠正，改正→ correct adj.正确的→ correct v．改正，纠正11. encourage v. 鼓励，激励→ encouraging adj. 鼓舞人心的→ encouraged adj. 受到鼓舞的，更有信心的→ encouragement n. 鼓励，奖励12．enjoyment n. 享受，乐趣→ enjoy v. 享受，喜欢→ enjoyable adj. 令人愉快的，有乐趣的13．fluency n. 流利，流畅→ fluent adj. 流利的，流畅的14. disappointed adj. 失望的→ disappointing adj. 使人失望的，令人失望的→ disappoint vt. 使失望→ disappointment n. 失望15. assistant n. 助手，助理→ assist v．帮助【重点短语】1. be similar to sth. 与某物相似be similar in … 在……方面相似e.g.: ① Her teaching style is similar to that of most other teachers.她的教学风格和多数教师相似。
一、选择题1．真空中带电荷量分别为+4Q 和-6Q 的两个相同的金属小球，相距为r 时相互作用力大小为F 。
若把它们接触一下后分开，再放到相距2r处，它们的相互作用力大小变为（ ） A ．12F B ．6F C ．3F D ．23FB 解析：B 接触前库仑力大小1246Q QF F kr ⋅== 接触后分开，两小球的电荷都为Q ，则库仑力222162Q F kF r ==⎛⎫ ⎪⎝⎭故ACD 错误，B 正确。
故选B 。
2．如图，a 、b 、c 、d 为正方形四条边的中点，中心O 点固定一个带电量为Q 的正点电荷，正方形位于场强大小为E 、方向与正方形平面平行的匀强电场中。
现在a 点放一带电量为q 的正检验电荷，检验电荷恰好不受电场力的作用。
不计检验电荷的重力，下列说法正确的是（ ）A ．匀强电场的方向一定与ac 连线平行且向上B ．若a 点的检验电荷带负电，则受到的电场力为2qEC ．正方形边上的c 点电场强度大小为2ED ．正方形边上的b 、d 两点电场强度相同C 解析：CA ．因为检验电荷在a 点恰好不受电场力的作用，所以a 点的合电场强度为零，O 点的正点电荷在a 点的电场方向与ac 连线平行且向上，所以匀强电场的方向应该与ac 连线平行向下，故A 错误；B．因为a点的合电场强度为零，所以不管a点的检验电荷带负电还是正电，受到的电场力均为0，故B错误；C．O点的正点电荷在c点的电场方向与ac连线平行且向下，大小为E，匀强电场的方向也是与ac连线平行向下，大小为E，所以c点电场强度大小为2E，故C正确；D．正方形边上的b、d两点电场强度大小相等，方向不同，故D错误。
故选C。
3．如图所示，左边是一个原先不带电的导体，右边C是后来靠近导体的带正电金属球，若用绝缘工具沿图示某条虚线将导体切开，分导体为A、B两部分，则下列结论正确的是（）A．沿虚线d切开，A带负电，B带正电B．只有沿虚线b切开，才有A带正电，B带负电C．只有沿虚线a切开，A带正电，B带负电D．沿任意一条虚线切开，都有A带正电，B带负电D解析：D由题意可知，静电感应现象使得A端带正电，B端带负电，与沿哪条线切开无关。
人教版高一下学期物理教案5篇人教版高一下学期物理教案篇1一、教材分析《欧姆定律》一课，学生在初中阶段已经学过，高中必修本(下册)安排这节课的目的，主要是让学生通过课堂演示实验再次增加感性认识;体会物理学的基本研究方法(即通过实验来探索物理规律);学习分析实验数据，得出实验结论的两种常用方法——列表对比法和图象法;再次领会定义物理量的一种常用方法——比值法.这就决定了本节课的教学目的和教学要求.这节课不全是为了让学生知道实验结论及定律的内容，重点在于要让学生知道结论是如何得出的;在得出结论时用了什么样的科学方法和手段;在实验过程中是如何控制实验条件和物理变量的，从而让学生沿着科学家发现物理定律的历史足迹体会科学家的思维方法.本节课在全章中的作用和地位也是重要的，它一方面起到复习初中知识的作用，另一方面为学习闭合电路欧姆定律奠定基础.本节课分析实验数据的两种基本方法，也将在后续课程中多次应用.因此也可以说，本节课是后续课程的知识准备阶段.通过本节课的学习，要让学生记住欧姆定律的内容及适用范围;理解电阻的概念及定义方法;学会分析实验数据的两种基本方法;掌握欧姆定律并灵活运用. 本节课的重点是成功进行演示实验和对实验数据进行分析.这是本节课的核心，是本节课成败的关键，是实现教学目标的基础.本节课的难点是电阻的定义及其物理意义.尽管用比值法定义物理量在高一物理和高二电场一章中已经接触过，但学生由于缺乏较多的感性认识，对此还是比较生疏.从数学上的恒定比值到理解其物理意义并进而认识其代表一个新的物理量，还是存在着不小的思维台阶和思维难度.对于电阻的定义式和欧姆定律表达式，从数学角度看只不过略有变形，但它们却具有完全不同的物理意义.有些学生常将两种表达式相混，对公式中哪个是常量哪个是变量分辨不清，要注意提醒和纠正.二、关于教法和学法根据本节课有演示实验的特点，本节课采用以演示实验为主的启发式综合教学法.教师边演示、边提问，让学生边观察、边思考，限度地调动学生积极参与教学活动.在教材难点处适当放慢节奏，给学生充分的时间进行思考和讨论，教师可给予恰当的思维点拨，必要时可进行大面积课堂提问，让学生充分发表意见.这样既有利于化解难点，也有利于充分发挥学生的主体作用，使课堂气氛更加活跃.通过本节课的学习，要使学生领会物理学的研究方法，领会怎样提出研究课题，怎样进行实验设计，怎样合理选用实验器材，怎样进行实际操作，怎样对实验数据进行分析及通过分析得出实验结论和总结出物理规律.同时要让学生知道，物理规律必须经过实验的检验，不能任意外推，从而养成严谨的科学态度和良好的思维习惯.三、对教学过程的构想为了达成上述教学目标，充分发挥学生的主体作用，限度地激发学生学习的主动性和自觉性，对一些主要教学环节，有以下构想：1.在引入新课提出课题后，启发学生思考：物理学的基本研究方法是什么(不一定让学生回答)这样既对学生进行了方法论教育，也为过渡到演示实验起承上启下作用.2.对演示实验所需器材及电路的设计可先启发学生思考回答.这样使他们既巩固了实验知识，也调动他们尽早投入积极参与.3.在进行演示实验时可请两位同学上台协助，同时让其余同学注意观察，也可调动全体学生都来参与，积极进行观察和思考.4.在用列表对比法对实验数据进行分析后，提出下面的问题让学生思考回答：为了更直观地显示物理规律，还可以用什么方法对实验数据进行分析目的是更加突出方法教育，使学生对分析实验数据的两种最常用的基本方法有更清醒更深刻的认识.到此应该达到本节课的第一次高潮，通过提问和画图象使学生的学习情绪转向高涨.5.在得出电阻概念时，要引导学生从分析实验数据入手来理解电压与电流比值的物理意义.此时不要急于告诉学生结论，而应给予充分的时间，启发学生积极思考，并给予适当的思维点拨.此处节奏应放慢，可提请学生回答或展开讨论，让学生的主体作用得到充分发挥，使课堂气氛掀起第二次高潮，也使学生对电阻的概念是如何建立的有深刻的印象.6.在得出实验结论的基础上，进一步总结出欧姆定律，这实际上是认识上的又一次升华.要注意阐述实验结论的普遍性，在此基础上可让学生先行总结，以锻炼学生的语言表达能力.教师重申时语气要加重，不能轻描淡写.要随即强调欧姆定律是实验定律，必有一定的适用范围，不能任意外推.7.为检验教学目标是否达成，可自编若干概念题、辨析题进行反馈练习，达到巩固之目的.然后结合课本练习题，熟悉欧姆定律的应用，但占时不宜过长，以免冲淡前面主题.四、授课过程中几点注意事项1.注意在实验演示前对仪表的量程、分度和读数规则进行介绍.2.注意正确规范地进行演示操作，数据不能虚假拼凑.人教版高一下学期物理教案篇2一.教材的地位和作用动量守恒定律是自然界中最重要，最普遍的守恒定律之一，它既适用于宏观物体，也适用于微观粒子;既适用于低速运动物体，也适用于高速运动物体，甚至对力的作用机制尚不清楚的问题中，动量守恒定律也适用。
9.2 库仑定律结论、电荷之间存在着相互作用力，力的大小与电量的大小、电荷间距离的大小有关，电量越大，距离越近，作用力就越大；反之电量越小，距离越远，作用力就越小。
作用力的方向，可用同种电荷相斥，异种电荷相吸的规律确定。
2、库仑定律：内容：真空中两个静止的点电荷的相互作用跟它们所带电量的乘积成正比，跟它们之间距离的二次方成反比，作用力的方向在它们的连线上。
3、库仑定律表达式：F ＝k q 1q 2r2 4、对库仑定律的理解：(1) 库仑定律的适用条件：真空中，两个点电荷之间的相互作用。
a ：不考虑大小和电荷的具体分布，可视为集中于一点的电荷． b ：点电荷是一种理想化模型．c ：介绍把带电体处理为点电荷的条件．d ：库仑定律给出的虽是点电荷间的静电力，但是任一带电体都可看成是由许多点电荷组成的，据库仑定律和力的合成法则就可以求出带电体间的静电力大小和方向．(2)k ：静电力恒量。
重要的物理常数k =9.0×109N·m 2/C 2，其大小是用实验方法确定的。
其单位是由公式中的F 、q 、r 的单位确定的，使用库仑定律计算时，各物理量的单位必须是：F ：N 、q ：C 、r ：m 。
(3)关于点电荷之间相互作用是引力还是斥力的表示方法，使用公式计算时，点电荷电量用绝对值代入公式进行计算，然后根据同性电荷相斥、异性电荷相吸判断方向即可。
（4）库仑力也称为静电力，它具有力的共性。
它与高一时学过的重力，弹力，摩擦力是并列的。
它具有力的一切性质，它是矢量，合成分解时遵从平行四边形法则，与其它的力平衡，使物体发生形变，产生加速度。
若点电荷不是静止的，而是存在相对运动，那么它们之间的作用力除了仍存。
高一秋季班讲义M1 Europe一、重点单词1.across2.face3.range4.situated5.located6.symbol7.opposite8.agreement9.whereabouts10.region11.feature12.produce二、重点词组1.in the south of2.work on3.because of4.be known as5.ever since6.none & none of & no one & nothing7.think of8.refer to9.in terms ofpare with11.on the other hand12.little by little三、重点句型1.Between Italy and France, ther e’s a mountain range called Alps.2.One of Barcelona’s most famous landmarks is the church of the Sagrada Familia, which was designed by anarchitect called Antonio Gaudi.3.Which of them would you like to visit?4.That’s the capital of Scotland, isn’t it?5.The expanded European Union has a population of more than half a billion people, twice as big as the population ofthe United states.四、语法：（一）被动语态注意：在主动句中，动词不定式作感官动词（see, watch, hear等）或使役动词（make, have）等的宾语补足语时必须省略to;但改为被动结构后，要to加上。
另外，当动词是let时，其被动结构中仍不带to.e.g. see sb do sth→ sb be seen to do sth; make sb do sth→ sb be made to do sth（二）主谓一致一、语法意义一致原则1. 主语后面接with, as well as, including, besides, except, but等词或短语时，谓语动词的单复数形式由主语的单复数决定。
2. 由“a pair ( a kind, a series…) of +复数名词”作主语时，谓语动词用单数形式。
“pairs( kinds…) of +复数名词”，作主语时，谓语动词用复数。
3. 不定代词作主语时，谓语动词用单数，如either, neither, each one, something, anything, nothing，anybody, nobody 等。
4. 不定式或v.- ing形式作主语时，谓语动词用单数形式。
5. 由each, every…, each…and, every…and作主语时，用单数谓语动词。
6. “a lot of ( lots of, plenty of, a pile of, piles of, most of) + 名词”和“分数或百分数+名词”等作主语时，谓语动词的单复数形式取决于名词。
二、意义一致原则1. one and a half 的后面要接复数名词，作主语时，谓语动词用单数。
2. and 连接的几种情况(1) 一般情况下，谓语动词用复数。
同both…and用法。
(2) 当and连接的两个名词指同一个人或物（即and后无冠词）时，谓语动词用单数。
Eg. The singer and dancer _______ (be) to attend our English evening.(3) and 连接的两个单数名词前，都有every, each或no修饰时，谓语动词用单数。
Eg. Each boy and each girl _______ (be) going to the party today.2. 表示时间、金钱、距离的名词后+ s, 视为一个整体，谓语动词用单数。
3. 集体名词family, team, group, crowd, class等作主语时，若表示一个整体则用单，谓语动词；若表示集体中的成员，则用复数名词。
4. 集合名词people, police, cattle作主语时，谓语动词用复数。
5. 算式中加法和乘法可用单数，也可用复数，但减法和除法必需用单数。
Eg. What is/ are three times three?6. a number of + 复数名词 谓语动词用复数；the number of +名词复数 谓语动词用单数。
7. what 从句作主语时，如果表示的是单数意义，则谓语动词用单数形式，如果表示的是复数意义，则谓语动词用复数形式。
Eg. ○1 What he wanted to know ________ ( be) why they didn’t tell him.○2 what he left me _______ (be) some old books.8. “the+ 姓氏名词复数“作主语，表示”…一家“,谓语动应用复数形式。
9. one of + 复数名词+ 单数谓语动词10. 复数形式表示单数内容，如news, 或以-ics结尾的学科名词，如physics, maths, politics等。
11. none 作主语时，谓语动词可用单数，也可用复数，但代表不可数的东西时总是看做单数，因而谓语动词用单数。
三、就近原则：or, either…or, neither… nore, not only… but also, here there 引导的句子【语法专项】单选1. His sister left home in 1998, and _____ since.A. had not been heard ofB. has not been heard ofC. had not heard ofD. has not heard of2. The way the guests _______ in the hotel influenced their evaluation of the service.A. treatedB. were treatedC. would treatD. would be treated3. – Why don’t we choose that road to save time?- The bridge to it _______.A. has repairedB. is repairedC. is being repairedD. will be repaired4. ______ the right kind of training, these teenage soccer players may one day grow into international stars.A. GivingB. Having givenC. To giveD. Given5. The teacher together with the students __________ discussing Reading Skills that ________ newly published in America.A. are; wereB. is; wereC. are; wasD. is; was6. Either you or one of your students _______ to attend the meeting that is due tomorrow.A. areB. isC. haveD. be7. The population of Jiangsu ______ to more than twice what it was in 1949. The figure is now approaching 74 million.A. has grownB. have grownC. grewD. are growing8. In the spoken English of some areas in the US, the “r” sounds at the end of the words ______.A. are droppedB. dropC. are being droppedD. have dropped9. This coastal area __________ a national wildlife reserve last year.A. was namedB. namedC. is namedD. names10. Linda makes sure the table _________ before the guests arrive.A. be setB. setC. are setD. are setting11. Traditional folk arts of Tianjin like paper cutting _______ at the culture show of the 2010 Shanghai World Expo.A. are exhibitingB. is exhibitingC. are being exhibitedD. is being exhibited12. Y ou’ve failed to do what you _________ to and I’m afraid the teacher will blame you.A. will expectB. will be expectedC. expectedD. were expected13. I still remember ______ to the Famen Temple and what I saw there.A. to takeB. to be takenC. takingD. being taken14. We are invited to a party _________ in our club next Friday.A. to be heldB. heldC. being heldD. holding15. The wet weather will continue tomorrow, when a cold front _______ to arrive.A. is expectedB. is expectingC. expectsD. will be expected16. I like these English songs and they ________ many times on the radio.A. taughtB. have taughtC. are taughtD. have been taught17. No decision _________ about any future appointment until all the candidates have been interviewed.A. will be madeB. is madeC. is being madeD. had been made18. Though we don’t know what was discussed, ________ yet we can feel the topic ______.A. had changedB. will changeC. was changedD. has been changed19. – Did you go to the show last night?- Y eah. Every boy and girl in the area ________ invited.A. wereB. have beenC. has beenD. was20. A poet and artist ________ coming to speak to us about Chinese literature and painting tomorrow afternoon.A. isB. areC. wasD. were21. It is you, rather than he, that ________ for the accident.A. is to blameB. are to blameC. is blamedD. are blamed22. A survey of the opinions of experts _______ that three hours of outdoor exercise a week _______ good for on e’s health.A. show; areB. shows; isC. show; isD. shows; are23. With forest being destroyed, huge quantities of good earth ______ each year.A. is washing awayB. is being washed awayC. are washing awayD. are being washed away 【M1专项习题】一、单选1. He suddenly saw Sue ______ the room. He pushed his way _______ the crowd of people to get to her.A. across; acrossB. over; throughC. over; intoD. across; through2. As nobody here knows what is wrong with the machine, we must send for an engineer to _______ the problem.A. handleB. raiseC. faceD. present3. _______ with so much trouble, we failed to complete the task on time.A. Faced B Face C. Facing D. To face4. This restaurant has become popular for its wide __________ of foods that suit all tastes and pockets.A. divisionB. areaC. rangeD. circle5. China lies ______ the east of Asia and Japan ________ the east of China.A. in; inB. to; toC. in; toD. to; in6. There are many islands ______ the Chinese coast.A. ofB. offC. fromD. on7. Now that we’ve discussed our problem, are people happy with the decisions _______?A. takingB. takeC. takenD. to take8. It is one of the funniest thing _______ on the Internet so far this year.A. findingB. being foundC. to findD. found9. Ideally ______ for Broadway theaters and Fifth A venue, the New Y ork Park hotel is a favourite with many guests.A. locatingB. being locatedC. having been locatedD. located10. What is the chemical ________ for copper?A. symbolB. signC. markD. symbolism11. The play ________ next month aims mainly to reflect the local culture.A. producedB. being producedC. to be producedD. having been produced12. We had wanted to finish our task by noon, but it didn’t quite _______ as planned.A. find outB. give outC. hand outD. work out13. He found it increasingly difficult to read, _________ his eyesight was beginning to fail.A. thoughB. forC. butD. so14. Jenny was very sad over the loss of the photos she had shot at Canada, ________ this was a memory she especially treasured.A. asB. ifC. whenD. where15. ______ we have finished our work, let’s have a rest.A. BecauseB. ForC. AsD. Since16. My friend Martin was very sick with a strange fever; _________ he could neither eat nor sleep.A. as a resultB. after allC. any wayD. otherwise17. The book was written in 1946, _______ the education system has witnessed great changes.A. whenB. during whichC. since thenD. since when18. _____ of them were absent.A. Tow ninethsB. Two ninethC. Two ninthsD. Two ninth19. After graduating from college, I took some time off to go traveling, ______ turned out to be a wise decision.A. thatB. whichC. whenD. where20. There’s nice little café _______ this house. Cross the street, and you’ll be there.A. on the contrary ofB. opposite toC. in front ofD. facing to21. ______ what I had originally thought, the trip turned out to be fun.A. Instead ofB. In spite ofC. Contrary toD. Because of22. – When did you last hear _______ Jay?- He phoned me this morning, and we agreed ________ a time and place to meet.A. of; toB. about; withC. from; withD. from; on23. Charles was alone at home, with ________ looking after him.A. someoneB. anyoneC. not oneD. no one24. Of all the books on the desk, _______ is of any use for our study.A. nothingB. no oneC. neitherD. none25. The president spoke at the business meeting for nearly an hour without ________ his notes.A. bringing upB. referring toC. looking forD. trying on26. Most of us know we should cut down on fat, but knowing such things isn’t much help when it ______ shopping and eating.A. refers toB. speaks ofC. focuses onD. comes to27. We forgot to bring our tickets, but please let us enter, ________?A. do youB. can weC. will youD. shall we28. I’m sure you’d rather she went to school by us, _______?A. hadn’t youB. wouldn’t youC. aren’t youD. didn’t she29. Sarah had her washing machine repaired the day before yesterday, ________ she?A. hadB. didC. hadn’tD. didn’t30. There is no light in the dormitory. They must have gone to the lecture, ______?A. didn’t theyB. don’t theyC. mustn’t theyD. haven’t they31. A great man shows his greatness _______ the way he treats little men.A. underB. withC. onD. by32. This is the only way we can imagine _______ the overuse of water in student s’ bathrooms.A. reducingB. to reduceC. reducedD. reduce33. What surprised me was not what he said but ______ he said it.A. the wayB. in the way thatC. in the wayD. the way which34. ________ achievement, last week’s ministerial meeting of the WTO here earned a low, though not failing, grade.A. In terms ofB. In case ofC. As a result ofD. In face of35. _______ with the size of the whole earth, the biggest ocean does not seem big at all.A. CompareB. When comparingC. ComparingD. When compared36. I would like a job which pays more, but ________ I enjoy the work I’m doing at the moment.A. in other wordsB. on the other handC. for one thingD. as a matter of fact37. It is certain that he will _______ his business to his son when he gets old.A. take overB. think overC. hand overD. go over38. Y ou’re driving too fast. Can you drive ______?A. more slowly a bitB. slowly a bit moreC. a bit more slowlyD. s lowly more a bit39. I like this jacket better than that one, but it costs three times ________.A. as muchB. as manyC. so muchD. so many40. Ten years ago the population of our village was ______ that of theirs.A. as twice large asB. twice as large asC. twice as much asD. as twice much as。
