2012年广东省人教版必修六单元练习题Unit 5

一、语法填空

Storms __1__produced at least 13 tornadoes swept along New Mexico's border with Texas on Friday，__2__(destroy) homes and other buildings and injuring at least 16 people，several critically serious，authorities said.The __3__(bad) damage was reported in the towns of Logan and Clovis，which are about 80 miles apart，police said.The tornadoes damaged several __4__ (new) built buildings，toppled power lines __5__sparked fires that were later put out in Clovis，police Lt.James Schoeffel said.Thirteen people from __6__area were hospitalized at the Plains Regional Medical Center.Five were in bad condition __7__head trauma(外伤，损伤)，said Liz Crouch，the center's chief operating officer.In Logan，three people __8__(take) to a hospital，__9__others were treated at a local clinic.One of them was a visitor，saying that he wouldn't have been there if he __10__(watch) the weather forecast the day before.

二、完形填空

阅读下面短文，掌握其大意，然后从1～15各题所给的A、B、C和D项中，选出最佳选项。

When a person is curious (好奇的) about something，it means he is __1__in it and wishes to know something about it.We can say he has curiosity about that thing.There is nothing wrong with curiosity in itself.Whether it is good or bad __2__on what people are curious about.

Curiosity __3__can be silly or wrong.Some people with nothing to do are __4__of curiosity about what their neighbours are doing.They are anxious to know what they are eating or drinking，what they are __5__home or taking outside，or why they have come home so early or late.To be interested in these things is silly because they are not important.It is none of their __6__ to know what their neighbours do or are doing.Such curiosity is not only foolish but also harmful (有害的)．Most probably，it may __7__to small talk which often brings harm，shame or disrespect to __8__，and thus __9__their feelings.

On the other hand，there is a noble (高尚的) curiosity — curiosity of wise men，who wonder at all the great things and try to find out all they __10__ about them.Columbus would never have found America if he had not been __11__.James Watt would not have made the steam engine __12__ his curiosity about the rising of the kettle lid.All the discoveries in human history have been made __13__ a result of curiosity，__14__ the curiosity is never about unimportant things which have __15__or nothing to do with the happiness of the public.

1．A.engaged B．pleased

C．interested D．excited

2．A.keeps B．puts

C．takes D．depends

3．A.always B．sometimes

C．seldom D．never

4．A.full B．fond

C．proud D．out

5．A.taking B．bringing

C．going D．coming

6．A.work B．housework

C．duty D．business

7．A.refer B．lead

C．cause D．bring

8．A.other B．others

C．another D．the others

9．A.hurts B．effects

C．shows D．destroys

10．A.need B．must

C．may D．can

11．A.famous B．careful

C．curious D．hard

12．A.for B．without

C．with D．in

13．A.as B．in

C．on D．of

14．A.so B．however

C．but D．or

15．A.much B．little

C．some D．any

三、阅读理解专题训练(七)

记叙文的阅读(2)

◆方法点拨

新闻报道也属于记叙文范畴。在读新闻报道时，必须弄清楚新闻事件的时间、地点、人物、及其结果，因为对新闻报道设置阅读理解题时，往往细节题占多数，能回答这些问题，就掌握了新闻的主要内容，也就能做好新闻题材的阅读理解题。

阅读下列短文，按要求完成读写任务。

◆活学活用

Singapore，Tues.Eight people—three of them women—died after being trapped in an attic(顶楼)when fire gutted(损坏)their two-storey Terrance house yesterday.

In the tragedy，about thirty-six people were sleeping in the building when the fire，started by a short circuit，broke out.Most of them managed to rush out in time.

One of the first to leave the building was Miss Poh，nineteen，a factory-worker，who was awakened from her sleep by shouts of “Fire！”shortly after 3∶10 am.She said，“I shouted to the other tenants to get out.By this time，the first floor was inflamed and I could hear people crying and screaming.Someone brought a ladder and placed it against the wall，but it only went up as far as the first floor.There was no hope for those trapped in the attic.” One who did escape from the attic told reporters that he could only save himself by going through the ventilation(通风)opening.

Chin Meng，twenty，a fitter，wept as he recalled how he had to leave his parents behind.He said，“When I tried to return for my parents，I was driven back by the thick smoke and the heat.”

Shortly after the blaze was spotted，three fire engines raced to the Steve and by 4 a．m.had the fire under control.

The MP for the area visited the scene and said，“The landlord was wrong to rent out rooms irresponsibly.He has not given due thought to the safety of his tenants.”

Ⅰ.根据所读短文，写一篇30词左右的摘要

_______________________________________________________ _______________________________________________________ _______________________________________________________ Ⅱ.根据所读短文，选出最佳选项

1．________ males were killed in the fire.

A．Eight B．Five

C．Three D．Thirty-six

2．The fire started ________.

A．after Miss Poh awoke from her sleep

B．at about 3 am

C．in the daytime

D．quite some time after 3∶10 am

3．The fire brigade took ________ to get the fire under control.

A．about an hour B．three hours

C．ten minutes D．four hours

4．The MP for the area ________ the landlord.

A．criticized B．praised

C．questioned D．laughed at

5．In the fourth paragraph，the word “recalled” means ________.

A．told B．told again

C．thought of the past D．said

参考答案

一、

1．解析：引导定语从句。

答案：that/which

2．解析：现在分词作结果状语，和后面的injuring并列。

答案：destroying

3．解析：最高级。

答案：worst

4．解析：修饰后面的动词built, 用副词形式。

答案：newly

5．解析：连接damaged ，toppled和sparked。

答案：and

6．the7.with

8．解析：被送往医院，用被动语态。

答案：were taken

9．解析：表示对比；翻译成“而”。

答案：while

10．解析：虚拟语气，和过去的事实相反的从句使用过去完成时。

答案：had watched

二、

1．解析：be interested in 是固定词组，表示“对感兴趣”。

答案：D

2．解析：depend on: 取决于。“好奇”好还是不好，取决于人们对什么感兴趣。

答案：B

3．解析：有时某些人的好奇可能愚蠢荒谬。

答案：B

4．解析：be full of curiousity充满好奇。

答案：A

5．解析：bringing home 与taking outside 相对应。

答案：B

6．解析：It's none of one's business不关某人的事。

答案：D

7．解析：lead to导致，这种好奇会导致闲言碎语，对他人带来伤害，羞辱或不敬。

答案：B

8．解析：参看第7题解析。

答案：B

9．解析：因此伤害别人的感情。

答案：A

10．解析：find out all they can的意思是：尽可能发现它们(great

things)的奥秘。

答案：D

11．解析：要不是哥伦布好奇，这里用了虚拟语气。

答案：C

12．解析：如果没有瓦特对跳动的水壶盖的好奇，就不会有蒸汽机的问世。

答案：B

13．解析：由于好奇。

答案：A

14．解析：这里表示转折。

答案：C

15．解析：have little or nothing to do with: 与……没关系。

答案：B

三、

Ⅰ

A fire destroyed a two-storeyed building in Terrance，Singapore at about 3 a．m.on Monday，causing eight deaths.It was so fierce a fire that it took three fire engines almost an hour to have the fire under control.

Ⅱ

1．解析：这是一细节题。从第一句可知答案。

答案：B

2．解析：从shortly after 3∶10 am可知火灾发生时间大约是凌晨三点。

答案：B

3．解析：火灾三点发生，by 4 am had the fire under control告诉我们答案为A。

答案：A

4．解析：文章最后一段表明议员批评房东不负责任，不考虑住户的安全。

答案：A

5．解析：recalled意为“回忆”。

答案：C

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机械振动复习思考题(含答案)

机械振动复习思考题 1 心O 距离为l ?? sin 0mgl J -= ??≈sin 00=+?? mgl J T J mgl n n 0 2,== ω2 2 04n T mgl J = 2 0ml J J c -= 2 半径为r 、质量为 的固有频率。 解： ?? r r R v c =-=)(?? r r R -= 222121? J mv T c c +=cos 1)((r R h --=(2 1R mg mgh V ==2 2ref 2 max )(4 3,)(2 1m m r R m T r R mg V ??-= -= ) (32ref max r R g T V n -= = ω 3 举例说明振动现象、振动的危害以及如何有效的利用振动。

答：1）振动现象： 心脏的搏动、耳膜和声带的振动等；汽车、火车、飞机及机械设备的振动；家用电器、钟表的振动；地震以及声、电、磁、光的波动等等。 2）振动的危害 轻则影响乘坐的舒适性；降低机器及仪表的精度，重则危害人体健康，引起机械设备及土木结构的破坏。 3）振动的利用 琴弦振动；振动沉桩、振动拔桩以及振动捣固等；振动检测；振动压路机、振动给料机和振动成型机等。 4何为机械振动及研究目的? 答：机械振动：机械或结构在平衡位置附近的往复运动。研究目的：利用振动为人类造福；减少振动的危害。 5 何为振动系统的自由度？请举例说明。 答：自由度就是确定系统在振动过程中任何瞬时几何位置所需独立坐标的数目。刚体在空间有6个自由度：三个方向的移动和绕三个方向的转动，如飞机、轮船；质点在空间有3个自由度：三个方向的移动，如高尔夫球；质点在平面有2个自由度：两个方向的移动，加上约束则成为单自由度。 6 如何对机械振动进行分类？ 答：1）按振动系统的自由度数分类 单自由度系统振动——确定系统在振动过程中任何瞬时几何位置只需要一个独立坐标的振动； 多自由度系统振动——确定系统在振动过程中任何瞬时几何位置需要多个独立坐标的振动； 连续系统振动——确定系统在振动过程中任何瞬时几何位置需要无穷多个独立坐标的振动。 2）按振动系统所受的激励类型分类 自由振动——系统受初始干扰或原有的外激励取消后产生的振动； 强迫振动——系统在外激励力作用下产生的振动； 自激振动——系统在输入和输出之间具有反馈特性并有能源补充而产生的振动。 3）按系统的响应（振动规律）分类 简谐振动——能用一项时间的正弦或余弦函数表示系统响应的振动； 周期振动——能用时间的周期函数表示系统响应的振动； 瞬态振动——只能用时间的非周期衰减函数表示系统响应的振动； 随机振动——不能用简单函数或函数的组合表达运动规律，而只能用统计方法表示系统响应的振动。 4）按描述系统的微分方程分类 线性振动——能用常系数线性微分方程描述的振动； 非线性振动——只能用非线性微分方程描述的振动。 7 简述构成机械振动系统的基本元素 答：构成机械振动系统的基本元素有惯性、恢复性和阻尼。惯性就是能使物体当前运动持续