必修二第五单元测试
篇1：必修二第五单元测试
I.短语翻译（15分，每题1分）
1.梦见;梦想______________________ 2.戏弄_______________________
3.打碎;分裂;解体________________ 4.分类_______________________
5.最重要的，首先__________________ 6.由于差错___________________
7.对……说老实话__________________ 8.大约_______________________
9.偶然____________________________ 10.坚持______________________
11.取笑___________________________ 12.不超过____________________
13.逐渐形成_______________________ 14.以……为基础______________
15.对……认真_____________________
II.单词拼写（10分，每题1分）
Mozart is a very great __________________(音乐家) in the world.
Only in this way can you earn some __________________(额外的) money.
He was so __________________(吸引人的) that everyone was clapping for him.
There they f__________________ an army of about 5,000 men..
Are you f_______________ with Harrison’s poetry?
I failed to see the evening __________________(演出) with the new bad.
He is good at English, so he is c______________ that he will pass the oral test.
The ball r_____________ down the hill just now.
I didn’t remember the correct answer until ________________(后来地).
The interview was __________________(播送) live across the world.
III.完成句子（10分，每题2分）
1. I ______ ________ (很荣幸) to be asked to speak at the meeting.
2. ______ ______ ______ ________ _______(大部分男生) are fond of playing basketball.
3. The students pretended ________ _________ _________ (在看书) when the teacher came in.
4. I came across his name _______ _________ (偶然) on the list and knew he would go there too.
5. It is good to have money, but __________ _________ (最重要的是) we must be healthy.
IV．翻译句子（10分，每题2分）
1.孩子们非常喜欢他们的老师。(be attached to)
____________________________________________________________
2.他的领带很配她的外套。(match)
___________________________________________________________
3.坦率地说，我认为你会不及格。
____________________________________________________________
4.汽车在高速公路上抛锚了.(break down)
_____________________________________________________________________________
5.这位老太太待我就像我是她的亲生儿子一样。(as if)
_______________________________________________________________
篇2：必修二第五单元测试
一、 选择题：本题共56分，在每小题给出的四个选项中，有的只有一个选项正确，有的有多个选项正确，全部选对的得4分，选对但不全的得2分，有选错的得0分。
题号 1 2 3 4 5 6 7
答案
题号 8 9 10 11 12 13 14
答案
1、做曲线运动的物体，在运动过程中，一定变化的物理量是：( )
A、速率 B、速度 C、加速度 D、合外力
2、下列说法正确的是( )
A、两个直线运动的合运动一定是直线运动 B、两个直 线运动的合运动一定是曲线运动
C、两个直线运动的合运动可能是直线运动或者曲线运动
D、两个匀变速直线运动的合运动一定是匀变速直线运 动
3.关于匀速圆周运动，下列说法中不正确的是( )
A.匀速圆周运动是匀速率圆周运动 B.匀速圆周运动是向心力恒定的运 动
C.匀速圆周运动是加速度的方向始终指向圆 心的 运动 D.匀速圆周运动是变加速运动
4.在同一点O抛出的三个物体，做平抛运动的轨迹如上图所示，则三个物体做平抛运动的初速度vA、vB、vC的关系和三个物体做平抛运动的时间tA、tB 、tC的关系分别是( )
A.vA>vB>vC，tA>tB>tC B.vA=vB=vC，t A=tB=tC
C.vA
5、汽车以速度v通过一半圆形拱桥的顶端时，汽车受力的说法中正确的是( )
A、汽车的向心力就是它所受的重力
B、汽车的向心力是它所受的重力和支持力的合力，方向指向圆心
C、汽车受重力、支持力、牵引力、摩擦力和向心力的作用 D、以上均不正确
6、一只船在静水中的速度为0.4m/s，它要渡过一条宽度为40m的河，河水的流速为0.3m/s。则下列说法中正确的是( )
A.船不可能渡过河 B.船有可能垂直到达对岸
C.船不能垂直到达 对岸 D.船到达对岸所需时间都是100s
7、物体做平抛运动时，它的速度的方向和水 平方向间的夹角α的正切tgα随时间t变化的图像是图1中的( )
8.甲、乙、丙三个物体，甲在广州，乙在上海， 丙在北京.当它们随地球一起转动时，则( )
A.甲的角速度、乙的线速度最小 B.丙的角速度最小、甲的线速度
C.三个物体的角速度、周期和线速度都相等 D.三个物体的角速度、周期一样，丙的线速度最小
9、将一小球从距地面h高处，以初速度v0水平抛出，小球落地时速度为v，它的竖直分量为vy，则下列各式中计算小 球在空中飞行时间t正确的是( )
A. B.(v-v0)/g C.vy/g D.2h/vy
10.铁路在弯道处的内外轨道高低是不同的，已知内外轨道对水平面倾角为θ，弯道处的圆弧半径为R，若质量为m的火车以速度v通过某弯道时，内、外轨道均不受侧压力作用，下面分析正确的是( )
A.轨道半径 B.
C.若火车速度小于v时，外轨将受到侧压力作用，其方向平行轨道平面向内
D.若火车速度大于v时，外轨将受到侧压力作用，其方向平行轨道平面向外
11、如图所示，在一次空地演习中，离地H高处的飞机以水平速度v1发射一颗炮弹欲轰炸地面目标P，反应灵敏的地面拦截系统同时以速度v2竖直向上发射炮弹拦截.设拦截系统与飞机的水平距离为s，若拦截成功，不计空气阻力，则v1、v2 的关系应满足( )
A.v1 = v2 B.v1 = Hs v2
C.v1 = Hs v2 D.v1 = sH v 2
12、 物体m用线通过光滑的水平板间小孔与砝码M相连，并且正在做匀速圆周运动，如图5所示，如果减少M的重量，则物体m的轨道半径r，角速度ω，线速度v的大小变化情况是( )
A. r不变. v变小 B. r增大，ω减小
C. r减小，v不变 D. r减小，ω不变
13.如图所示，长为R的轻杆，一端固定一个小球，另一端固定在光滑的水平轴上，使小球在竖直平面内作圆周运动，关于小球在点的速度v下列说法中错误的是 ( )
A.v的最小值为 B.v由零逐渐增大，向心力也逐渐增大
C.当v由 值逐渐增大时，杆对小球的弹力也逐渐增大
D.当v由 值逐渐 减小时，杆对小球的弹力也仍然逐渐增大
14.如图所示，在倾角为θ的斜面上某点A，以水平速度v抛出一物体,最后物体落在斜面上的B点，则( )
A.物体离开斜面运动的时间为2vtgθ/ g
B.物体离开斜面的距离为v2sin2θ/2gcosθ
C.A、B两点距离为2v2sinθ(1+tg2θ)/g
D.物体离开斜面最远时，到A、B两点间的距离相等二、填空题：每空2分，共14分。
15、如图所示， 在研究平抛运动时，小球A沿轨道滑下，离开轨道末端(末端水平)时撞开轻质接触式开关S，被电磁铁吸住的小球B同 时自由下落.改变整个装置的高度H做同样的实验，发现位于同一高度的A、B两球总是同时落地，该实验现象说明了A球在离开轨道后( )
A.水平方向的分运动是匀速直线运动 B.水平方向的分运动是匀加速直线运动
C.竖直方向的分运动是 自由落体运动 D.竖直方向 的分运动是匀速直线运动
16.如图，在水平路面上行使的汽车，通过定滑轮吊着一重物，汽车正在以速度v水平向右匀速行使，此时轻绳与水平方向的夹角为θ，则物体下降的速度大小为______________,在下降过程中绳上的拉力___________(填“大于，小于或等于”)物体的重力。
17、某同学设计了一个研究平抛运动的实验装置，如图所示，在水平桌面上放置一个斜面，让钢球从斜面上由静止滚下，钢球滚过的地方放置一块水平木板，木板由支架固定成水平，木板所在高度可通过竖直标尺读出，木板可以上下自由调节。在木板上固定一张白纸。该同学在完成装置安装后进行了如下的实验步骤：
A.实验前在白纸上画一条 直线，并在线上标出a、b、c三点，且ab=bc，如图。量出ab木板的长度L=20.00cm。
B.让钢球从斜面上的某一位置由静止滚下，调节木板高度，使得钢球正好击中a点，记下此刻木板与桌面的高度差h1=h。
C.让钢球从斜面上的同一位置由静止滚下，调节木板的高度，使得钢球正好击中b点，记下此时木板与桌面间的高度差h2=h+10.00cm。
D.让钢球从斜面上的同一位置由静止滚下，调节木板的高度，使得钢球 正好击中c点，记下此时木板与桌面的高度差h3=h+30.00cm。
O a b c
则该同学由上述测量结果可得出钢球做平抛运动初速度的大小v0= m/s，钢球击中b点时其竖直分速度大小为vby= m/s。(已知重力加速度为g=10m/s2。空气阻力不计)
18、两质点在空间同一点处同时水平抛出, 速度分别为v1=4.0m/s向左和v2=9.0m/s向右,取g=10m/s2 ，则：(1)当两个质点速度相互垂直时，它们之间的距离为 m。
(2)当两个质点位移相互垂直时，它们之间的距离为 m。
三、计算题(本题共4小题，共30分.要有必要的文字说明和解题步骤，有数值计算的要注明单位)
19.(7分)如图所示，是马戏团中上演的飞车节目，在竖直平面内有半径为R的圆轨道.表演者骑着摩托车在圆轨道内做圆周运动.已知人和摩托车的总质量为m，人以v1=2gR的速度过轨道点B，并以v2=3 v1的速度过最低点A.求在A、B两点轨道对摩托车的压力大小相差多少?
20.(7分)沿半径为R的半球型碗底的光滑内表面，质量为m的小球正以角速度ω，在一水平面内作匀速圆周运动， 试求此时小球离碗底的高度。
21.(8分)如图所示，半径R=0.9m的光滑的半圆轨道固定在竖直平面内，直径AC竖直，下端A与光滑的水平轨道相 切。一个质量m=1kg的小球沿水平轨道从A端以VA=3 m/s的速度进入竖直圆轨道，后小球恰好能通过点C。不计空气阻力，g取10m/s2。求：
(1)小球刚进入圆周轨道A点时对轨道的压力为多少?
(2)小球从C点离开轨道后的落地点到A点的距离为多少?
22、(8分)排球场总长18m，网高2.25 m，如图所示，设对方飞来一球，刚好在3m线正上方被我方运动员后排 强攻击回。假设排球被击回的初速度方向是水平的，那么可认为排球被击回时做平抛运动。(g取10m/s2)
(1)若击球的高度h=2.5m，球击回的水平速度与底线垂直，球既不能触网又不出底线，则球被击回的水平速度在什么范围内?
(2)若运动员仍从3m线处起跳，起跳高度h满足一定条件时，会出现无论球的水平初速多大都是触网或越界，试求h满足 的条件。
篇3：必修二第五单元测试
第一部分 英语知识运用(共两节，满分45分)
第一节 单项填空(共15小题;每小题1分，满分15分)
从A、B、C、D四个选项中，选出可以填入空白处的选项。
1.In many countries are going through financial crisis，________has a great effect on many walks of life.
A.it B.which C.that D.what
答案 B
解析 句意为：许多国家仍然需要面对经济危机，经济危机给我们生活的许多方面带来了很大影响。which引导非限制性定语从句。
2.It is said that chances are high________the Chinese Communist Party will cooperate with Kuomintang for the third time.
A.that B.as C.if D.what
答案 A
解析 句意为：据说中国共产党和国民党第三次合作的可能性很大。that引导同位语从句修饰chances。
3.A man is being questioned in relation to the________murder last night.
A.advised B.attended C.attempted D.admitted
答案 C
解析 attempted murder谋杀未遂。
4.Mr.Smith，________of the________speech，started to read a novel.
A.tired;boring B.tiring;bored
C.tired;bored D.tiring;boring
答案 A
解析 句意为：由于厌倦了那令人讨厌的演讲，史密斯先生开始读起了小说。tired of厌倦……;boring令人厌倦的，无聊的，故选A项。
5.Helen always helps her mother do the housework even though going to school________most of her day.
A.takes up B.makes up
C.saves up D.uses up
答案 A
解析 既使上学占了她一天中的大部分时间，但是海伦总是帮助她妈妈。take up占据(时间、场所等)。
6.Only when he told me________what trouble he was in.
A.did I realize B.I realized C.do I realize D.I realize
答案 A
解析 only+状语(状语从句)放句首时，主句要倒装。
7.________I met him，he was working as a secretary in a big company.
A.Since the first time B.The first time
C.For the first time D.The first time which
答案 B
解析 句意为：我第一次遇到他时，他正在一家大公司当秘书。
8.The doctor suggested he________with a serious disease and that he________to hospital at once.
A.be infected;be sent
B.was infected;be sent
C.should be infected;was sent
D.be infected;was sent
答案 B
解析 第一个句子中的suggest作“暗示，表明”讲，从句谓语动词根据需要使用时态;第二个句子的suggest表示“建议”，从句需用(should)+v.原形，故选B项。
9.The________look on his face showed that he hadn’t expected it.
A.astonished B.astonishing
C.being astonished D.having astonished
答案 A
解析 句意为：他脸上吃惊的表情表明他未料到此事。astonishing令人吃惊的，astonished吃惊的，惊讶的。
10.The doctor has________a new idea on the treatment，which is well thought of by his companions.
A come about B.put forward
C.spoken up D.regarded as
答案 B
解析 put forward提出。
11.Who is________the fire in the kitchen?
A.blame B.to blame for
C.blamed D.blame for
答案 B
解析 be to blame (for...)为……负责，为……而应该受到责备。
12.You should read the________in the car repair manual(手册)carefully before you start.
A.instructions B.instruction
C.introductions D.explanations
答案 A
解析 句意为：你在使用前应该仔细阅读汽车维修保护手册中的说明。instructions (pl.)说明;说明书。
13.No matter how I tried to read it，the sentence didn’t________to me.
A.understand B.make out
C.turn out D.make sense
答案 D
解析 make sense讲得通;有意义。
14.Dr.Bake is a professor of physics.________，he is a famous writer.
A.In all B.In brief
C.In fact D.In addition
答案 D
解析 句意为：贝克博士是一位物理学教授，另外，他还是一位的作家。in addition另外，除……之外还。
15.________in the computer games，the boy no longer put his heart into study.
A.Absorbing B.Losing
C.Absorbed D.Devoted
答案 C
解析 句意为：由于被电脑上的游戏所吸引，这个男孩不再把心思用在学习上了。be absorbed in sth.被……所吸引，全神贯注于……;be lost in沉浸在……中。
第二节 完形填空(共20小题;每小题1.5分，满分30分)
阅读下面短文，掌握其大意，然后从16～35各题所给的四个选项(A、B、C和D)中，选出选项。
As a single mother，I had to do two jobs，which kept me very busy.
Two months ago，I went to a __16__ with Alice.Since I __17__went out with her，she seemed very happy.Many parents were there with their children.I sat down on a bench，__18__Alice playing with other children.About half an hour later，a man of about forty years old came and __19__beside me.As I had to go back to work，I stood up and told Alice that we had to __20__.
“Can I stay here a little longer?”Alice pleaded.
“No，we must go now，”I said，__21__ Alice just didn’t move.
“Just ten more minutes，”she pleaded again，and I became __22__.
“Go now，”I__23__，and Alice started to cry.__24__ that，the man sitting on the __25__stood up and came to us.
“Why don’t you just let her__26__ten more minutes?”he asked.Then he told me a __27__.He used to be very busy，too.Every time his little son wanted to go out and play，he told him he was __28__.One day，his son went out and played __29__，and he didn’t come back again—he was hit by a __30__driver of a car.The father regretted what he had done to his son，but he never had the __31__to play with him again.Hearing the story，I __32__.I knelt down and said to Alice，“OK，ten more minutes，and Mom will play __33__you.”
__34__is all about making priorities(优先).What are your priorities?Give someone you__35__ten more minutes of your time today.
16.A. park B.school
C.sea D.cinema
答案 A
解析 根据后文对场景的描述可知作者带女儿去了一座公园。
17.A.sometimes B.often
C.usually D.hardly
答案 D
解析 根据前文“which kept me very busy”以及“she seemed very happy”的语境可知作者平时很少带女儿出去玩。
18.A. keeping B.hearing
C.finding D.watching
答案 D
解析 根据语境可知作者坐在公园的长凳上看女儿和别的小孩玩。
19.A. got off B.sat down
C.broke in D.turned up
答案 B
解析 根据语境可知一个四十多岁的男人走了过来，坐在了作者的身旁。
20.A . go B.shop
C change D.eat
答案 A
解析 根据“As I had to go back to work”的语境可知作者起身告诉女儿她们必须得走了。
21.A. because B.as
C.but D.so
答案 C
解析 根据“Alice just didn’t move”的语境可知女儿并不愿意回去，所以这里需要一个表示转折的连词。
22.A. sad B.pleased
C.angry D.excited
答案 C
解析 作者叫女儿走，可女儿不愿意，最后作者生气了。
23.A. whispered B.wished
C.begged D.shouted
答案 D
解析 根据作者生气的语境可知她朝女儿喊了起来。
24.A. Knowing B.Seeing
C.Hoping D.Thinking
答案 B
解析 根据语境可知长凳上的那个男人看到作者与女儿之间的这一幕站了起来，朝她们走了过来。
25.A. ground B.chair
C.bench D.stone
答案 C
解析 根据前文语境可知那个男人是坐在长凳上的。
26.A. run B.play C.do D.laugh
答案 B
解析 根据语境可知那个男人问作者为什么就不能让女儿再多玩十分钟。
27.A. story B.joke C.way D.lie
答案 A
解析 根据后文的语境可知那个男人给作者讲了一个发生在他身上的故事。
28.A. busy B.lonely
C.boring D.ill
答案 A
解析 根据“He used to be very busy，too.”的语境可知那个男人的儿子每次叫他陪他出去玩的时候，他就说很忙。
29.A.suddenly B.alone
C.happily D.crazily
答案 B
解析 根据那个男人总是不陪儿子出去玩的语境可知有一天他的儿子独自一个人出去玩了。
30.A. blind B.kind
C.drunken D.good
答案 C
解析 根据语境可知那个男人的儿子被一位喝醉酒的司机撞死了。
31.A. energy B.interest
C.heart D.chance
答案 D
解析 根据那个男人的儿子被车撞死了的语境可知他再也没有机会跟儿子一起玩了。
32.A. stayed up B.took part
C calmed down D.came back
答案 C
解析 根据语境可知作者听那个男人讲完发生在他身上的故事后便平静了下来。
33.A. behind B.with
C.for D.under
答案 B
解析 根据语境可知作者答应女儿可以再多玩十分钟，而且还会陪女儿一起玩。
34.A.Choice B.Joy C.Work D.Life
答案 D
解析 最后一段点明了文章的主题，即人生对某些事情应该优先对待。
35.A. appreciate B.dislike
C.admire D.love
答案 D
解析 根据语境可知作者建议我们匀出十分钟时间来给我们爱的人。
第二部分 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、D)中，选出选项。
A
It was almost four o’clock in the morning when the fire broke out.“We watched one window blown out，and then another，and heard people shouting，”says Stanley,21，a junior from Westfield State College in Massachusetts.Students were throwing ropes made from bed sheets out their windows，and a couple of them were trying to climb down.
Almost all the hotel’s 502 rooms were filled with college students from across the United States who were spending their holiday here in Acapulco，Mexico.As the smoke thickened，Moreno ran upstairs to where other Westfield students were rooming.“Some people had no idea what was going on，”he says.“I was shouting at the top of my voice.I made sure I hit every door.”At the same time，Stanley was downstairs helping people get through the smokefilled hall.There he joined forces with Nalewanski who had just come back from his own night out.
“Let’s go，”Nalewanski says.He and Stanley wet their shirts in the bathrom and wrapped them around their mouths and noses so they could breathe.Then they ran up the stairs.
Nalewanski and Stanley found Moreno on the fourth floor.They all ran upstairs and down the corridors(走廊)on every floor，hitting every door hard.
In the end，no one was seriously hurt.Even more unbelievable，all the Westfield students made it back to Massachusetts later that same day.
Westfield president Evan Dobelle says，“I have a great deal of pride in these young men and how they were able to react(反应)in such an emergency.”
36.What’s the best title for this passage?
A.College students have a terrible holiday
B.College students survive a big fire
C.Heroes：close call in a hotel fire
D.A big fire breaks out in a hotel in Mexico
答案 C
解析 主旨大意题。本文主要讲述在墨西哥的一家酒店遭遇大火的时候，几名大学生勇敢地跑上楼叫醒别人逃生的故事，故选C作文章的标题。
37.What do we learn about Stanley from the passage?
A.He is in his last year in college.
B.He is a very brave young man.
C.He was reading a book when the fire broke out.
D.He was the first one to find out there was a fire.
答案 B
解析 推理判断题。发生大火时，Stanley不顾个人安危，英勇地帮助别人脱难，由此可推断他是一个很勇敢的人。
38.According to the passage，________might not have woken people up during the fire.
A.Evan Dobelle B.Nalewanski
C.Stanley D.Moreno
答案 A
解析 细节理解题。通读文章内容可知Nalewanski、Stanley、Moreno都参与了救人工作，而根据文章最后一段可知Evan Dobelle是Westfield State大学的校长，文章并没有提及他当时有没有在现场，故他有可能并没有参与救人。
39.The students helped people out through all of the following ways EXCEPT________.
A.helping people get through the hall
B.shouting loudly to warn people
C.hitting the doors to wake people up
D.making ropes for people to climb down
答案 D
解析 细节理解题。通读全文，可知他们并没有做绳子来让别人爬下去逃生。B
The Internet is sometimes described as big computing power.But this power has to come from somewhere.Data centers(数据中心)are buildings full of servers.These powerful computers store，process，and move information.They make the Web work.
Tasks traditionally done with software，which is stored on a personal computer，are now increasingly offered as services on the Internet.Google Apps，for example，can work without the need for special software.Other companies，including Salesforce.com and Microsoft，also offer software as a service.
Rich Miller is an editor of the Data Center Knowledge.He says that computing power needs another kind of power which also has to come from somewhere.Data centers need energy not only to operate their servers but to cool and protect their systems.
The Environmental Protection Agency says the United States has about ten thousand data centers.It also says that they use almost two percent of the country’s electricity.
The amount and cost of energy used by data centers is the subject of growing concern.Using wind power or some other renewable(可再生的)energy for data centers could help the situation.Another answer is to make servers more energyefficient.
Still another solution may come from virtualization.This lets one server work like several.A server usually runs a single operating system，like Linux or Windows.Virtualization lets both run at the same time.
Rich Miller at Datacenterknowledge.com says the need for data centers will only increase as the Internet becomes more central to everyday life.
40.According to the first paragraph，all of the following statements about servers are true EXCEPT that________.
A.they are people in the data centers
B.they make the Web work
C.they send information to Internet users
D.they are powerful computers in the data centers
答案 A
解析 简单判断题。根据“These powerful computers store，
process，and move information.”可知servers在这里是指服务器，即功能很大的电脑，而不是指人。
41.Which of the following may NOT offer software as a service?
A.Google Apps.
B.Salesforce.com.
C.Microsoft.
D.Datacenterknowledge.com.
答案 D
解析 简单判断题。通读第二段，可知Google Apps、Salesforce.com以及Microsoft都给用户提供软件服务，文章并没有说Datacenterknowledge.com也为用户提供软件服务。
42.We can learn from the passage that________.
A.data centers often stop working
B.data centers use a lot of energy every day
C.there are about ten thousand data centers in the world
D.people no longer store software on their computers
答案 B
解析 推理判断题。根据第四段的“they use almost two percent of the country’s electricity.”以及后文提到的越来越多的人为数据中心消耗能量担忧可知其消耗能量很大。
43.In the writer’s opinion，which of the following may NOT be a good way to solve the energy problem?
A.By using wind power.
B.By making servers more energyefficient.
C.By letting one server work like several.
D.By asking people to rely on the Internet less.
答案 D
解析 细节理解题。根据最后一段的“the need for data centers will only increase as the Internet becomes more central to everyday life.”可知人们只会更多地依赖于网络，故可推断作者不会认为人们减少对网络的依赖是解决能源问题的办法。
C
Do you know that girls are seven times more likely than boys to be unhappy and twice more likely to commit suicide(自杀)and that girls are three times more likely than boys to have a negative attitude?Twenty percent of the girls in the US between the ages of 12 and 17 drink alcohol(酒)and smoke cigarettes.
So what is mental(心理的)health?Mental health is how we think，feel，and act in order to face life’s problems.
A young girl’s mental health affects her daily life and future.Like physical health，mental health is important at every stage of life.Caring for and protecting a young girl’s mental health is important to ensure that she grows up to become the best she can be.
Many children experience mental health problems that are painful and can be serious.Mental health problems affect at least one in every five young people at any given time.Unluckily，about two thirds of all young people with mental health problems are not getting the help they need.Mental health problems can lead to school failure，alcohol or other drug abuse(滥用)，family violence，or even suicide.
There are many signs that may point to a possible mental health problem in a child or teenager.If you are worried about a child or have any questions，look for help at once.Talk to your doctor，a school teacher，or other mental health experts who are trained to know whether your child has a mental health problem.You can also call 18007892647 for a list of warning signs.
44.What is implied in the first paragraph?
A.More and more girls are committing suicide.
B.Boys are usually physically stronger than girls.
C.Girls are more likely to have mental health problems than boys.
D.Children in America are lacking in parental care.
答案 C
解析 理解推断题。根据第一段所问的几个问题，可推知女孩子比男孩子更容易产生心理健康问题。
45.In the author’s opinion，________.
A.mental health is more important than physical health
B.mental health is important no matter how old you are
C.people with mental health problems will never succeed
D.it’s easier for children to have mental health problems than adults
答案 B
解析 细节理解题。根据第三段的“mental health is important at every stage of life.”可知在作者看来，不管人的年纪多少，心理健康都很重要。
46.According to the passage，which of the following people would most probably call 18007892647?
A.People who are sure they have mental health problems.
B.Children who have mental health problems and want help.
C.Parents who want to know whether their children are doing well at school.
D.Parents who want to know whether their children have mental health problems.
答案 D
解析 推理判断题。根据最后一句的“for a list of warning signs”可知拨打这个电话号码可以查询心理健康问题的一些征兆，故可推断那些想知道自己的孩子有没有心理健康问题的父母最有可能拨打这个电话号码。
47.The purpose of this passage is to________.
A.tell parents what to do if they find that their children have mental health problems
B.explain why so many children have mental health problems
C.tell people how bad it is to have mental health problems
D.ask parents to pay more attention to their children’s mentl health
答案 D
解析 作者意图题。根据第四段的“Unluckily，about two thirds of all young people with mental health problems are not getting the help they need.”可知目前很多父母对孩子的心理健康问题不够重视，作者在文章中强调了心理健康的重要性以及心理健康问题的危害性，其目的是希望父母们能更加重视孩子们的心理健康。
D
It is true that the first Olympic Games of the modern times in 1896 were not open to women.Baron Pierre de Coubertin，who gave new life to the Games，was very much a man of his time.He didn’t like women showing up for the Games.But since this time，things have changed.History shows that the number of women participating_in the Olympic Games has been increasing over the years, since their first participation in the 1900 Olympic Games and especially in the last 30 years.This development is of social，political and cultural significance(意义).
The progress is the result of the cooperation(合作)of the entire Olympic Movement and of proper measures that the International Olympic Committee (IOC)，International Sports Federations (IFs)，and National Olympic Committees (NOCs) have taken.Especially in the last 20 years，the IOC has enlarged the women’s program at the Olympic Games，in cooperation with IFs and the Organizing Committees for the Olympic Games (OCOGs).This development was further strengthened(巩固)by the IOC’s decision that all sports must have women’s events.The IOC also started to work on increasing the number of women at leadership level in sport in 1981.Former President Juan Antonio Samaranch，who wanted to have women as IOC members，made a great contribution(贡献).
Many sports volunteers have worked to increase the number of women joining in the Olympic Games.This progress has been made also thanks to the strong determination of women from different countries of the world who have worked to make sure women are fully represented in all sports.
48.The underlined part “participating in” in the first paragraph can be replaced by “________”.
A.getting close to B.taking part in
C calling for D.taking over
答案 B
解析 词义猜测题。根据“But since this time，things have changed.”的语境可知越来越多的女子参加奥运比赛。
49.According to the first paragraph，all of the following are true EXCEPT that________.
A.women were not allowed to join in the 1896 Olympic Games
B.Baron Pierre de Coubertin was very famous when he was alive
C.many women have competed in the Olympic Games in the last 30 years
D.Baron Pierre de Coubertin tried his best to let women join in the Olympic Games
答案 D
解析 细节理解题。根据第一段“He didn’t like women showing up for the Games.”可知Baron Pierre de Coubertin并不支持女子参加奥运比赛。
50.What are the last two paragraphs mainly about?
A.Why women were not allowed to join in the Olympic Games.
B.How more and more women were able to join in the Olympic Games.
C.What some organizations have done for women’s rights.
D.What sports volunteers have done to enable women to join in the Olympic Games.
答案 B
解析 主旨大意题。通读第二段，可知主要是讲在一些奥运组织与机构的积极努力下，越来越多的女子得以参加奥运比赛，而第三段是指体育志愿者以及世界各国的女子的积极争取也为越来越多的女子得以参加奥运比赛做出了贡献，故选B项。