1、选修7 Unit 4 Sharing基础操练. 单词拼写1. You can a the colour on the TV by turning the knob.2. This type of university course is no longer r to todays problem.3. We fight against p in order to create a fairer society.4. It is said that this company is in serious f difficulties now.5. She actively p in the loc
2、al politics.6. I have some (购买物) to make in the town.7. Pines have a wide (分布).8. We have been asked not to say anything for (安全的)reason.9. Mail comes to the (偏僻的) village once a week.10. Shenzhou manned by three trained (宇航员)was launched successfully in China. 用方框内所给短语的适当形式填空do with/hear from/in th
3、e center of/make a difference/the other day1. I havent you for a long time.2. I saw him .3. It doesnt whether he comes or not.4. What will you your pocket money?5. There is a park to be built the town. 完成句子1. 我昨天收到了纽约的姐姐的来信。I my sister in New York yesterday.2. 她渴望出国。She go abroad.3. 她在抽屉里偶然发现一些旧照片。S
4、he some old photos in a drawer.4. 最近非洲许多河流都干涸了。Many rivers in Africa recently.5. 你的衣服要很长时间才能干透。Your clothes will take ages .提升练习.单项填空从A、B、C和D四个选项中，选出可以填入空白处的最佳选项。1. The English play my students acted at the new years party was a great success.A. for which B. at whichC. in which D. on which2. I could
5、nt do my homework with all the noise .A. going on B. goes on C. went on D. to go on 3. His careless driving him his life last year.A. cost B. spent C. paid D. took4. Are all the titles of the articles in the contents?Yes, all .A. listed; included B. listing; includesC. listed; including D. being lis
6、ted; being included5. She the table and said the dinner was ready.A. lay B. laid C. lied D. lain6. scientists know where a storm will happen, winds will suddenly change, carrying the storm to a new direction.A. Even if B. Since C. DespiteD. Unless7. The man I yesterday is Mr. WhiteA. paid a visit B.
7、 had a talk C. dropped in D. came across8. The organization is badly of hands.A. relevant B. donated C. in need D. dying9. Sue is good at singing and her voice sounds .A. soft B. softly C. sweetly D. well10. Shut the window, itll get too cold in here.A. so B. yet C. but D. otherwise. 完形填空阅读下面短文，掌握其大
8、意，然后从各题所给的四个选项(A、B、C和D)中，选出最佳选项。One of the political issues that is heard a lot about in the States lately is campaign（竞选）finance reform（改革）. The people who are 1 for reform usually want the 2 to pay for campaigns and/or limit the amount of money that candidates（候选人）and their 3 can spend.One reason
9、that reform is called for is that it costs so much to 4 for political office. Candidates have to spend a great deal of time and effort 5 money. The incumbents (those already in office) have less time to do chief jobs since they must 6 so many money raising events.Another 7 is the fear that candidate
10、s will be owned or 8 by the “special interest groups” that give money to their campaigns. Sometimes this certainly seems to be the 9 .On the 10 side are those who say that it doesnt mean its really 11 just because you call something “reform”. They argue that the right to freedom of speech is 12 if t
11、he government can limit anyones ability to get his or her message out to the people.If one person or a group of people want to tell the 13 what they think about an issue or candidate, they have to buy 14 on TV, radio, and in newspapers and magazines. They might want to put up advertisements along hi
12、ghways and on websites. All this costs a lot of 15 .Those against laws that control or limit spending say that you dont really have freedom of 16 or freedom of the press if you cant get your message out. They say the government should never be able to control 17 discussions. They believe that this i
13、s most important when the voters are about to make 18 .What do you think about this 19 ? Listen to what the candidates for national office have to say. Which candidates 20 the most sense to you?1. A. waiting B. calling C. standing D. preparing2. A. government B. presidentC. candidates D. citizens3.
14、A. leaders B. bosses C. supporters D. states4. A. pay B. compete C. wait D. work5. A. raising B. earning C. giving D. getting6. A. notice B. reportC. guard D. attend7. A. event B. cost C. reason D. office8. A. encouraged B. forcedC. controlled D. ordered9. A. joke B. purpose C. case D. example10. A.
15、 other B. same C. another D. different11. A. worse B. better C. easier D. harder12. A. meaningless B. unimportantC. unnecessary D. impossible13. A. reporters B. truth C. story D. public14. A. time B. copies C. rights D. advertising15. A. energy B. effort C. time D. money16. A. argument B. opinion C.
16、 speech D. election17. A. common B. political C. general D. special18. A. profit B. troubleC. plans D. decisions19. A. quarrel B. problem C. issue D. affair20. A. find B. make C. createD. produce. 阅读理解阅读下列短文，从每题所给的四个选项(A、B、C和D)中，选出最佳选项。Science Daily(Apr. 27, 2008)Dutch ecologist Roxina Soler and her
17、 colleagues have discovered that subterranean (地下的) and aboveground herbivorous (食草的) insects can communicate with each other by using plants as telephones. Subterranean insects issue chemical warning signals through the leaves of the plant. This way, aboveground insects are warned that the plant is
18、 already “occupied”. Aboveground, leaf-eating insects prefer plants that have not yet been occupied by subterranean root-eating insects. Subterranean insects send out chemical signals through the leaves of the plant, which warn the aboveground insects about their presence. This messaging makes it po
19、ssible for spatially separated insects to avoid each other, so that they do not compete for the same plant. In recent years it has been discovered that different types of aboveground insects develop slowly if they feed on plants that also have subterranean insects and vice versa (反之亦然). It seems tha
20、t a mechanism (机制) has developed through natural selection, which helps the subterranean and aboveground insects to communicate with each other. This avoids unnecessary competition. Through the “green telephone lines”, subterranean insects can also communicate with a third party, namely the natural
21、enemy of caterpillars (毛虫). Parasitic wasps (寄生蜂) lay their eggs inside aboveground insects. The wasps also benefit from the signals sent by the leaves, as these help them find more insects for their eggs.The communication between subterranean and aboveground insects has only been studied in a few s
22、ystems. It is still not clear how widespread this phenomenon is, say the researchers.1. How do subterranean and aboveground insects communicate with each other?A. By sending signals through the leaves.B. By giving off particular smells.C. By making soft and beautiful sounds.D. By the signals sent by
23、 parasitic wasps.2. After finding a plant occupied by root-eating insects, aboveground insects will usually .A. send out warning signalsB. compete for the same plantC. choose to leave the plantD. fight with the root-eating insects3. Aboveground insects will develop more quickly if their food plants
24、.A. are often visited by parasitic waspsB. are not occupied by root-eating insectsC. have more green leavesD. have more subterranean insects4. What does the underlined part “a third party” in paragraph 4 include?A. Aboveground insects.B. Root-eating insects.C. Caterpillars.D. Parasitic wasps.5. What
25、 would be the BEST title for the passage?A. Communication between different insects.B. How do animals avoid competition?C. Insects use plants as telephones.D. When plants have subterranean residents.答案基础操练. 单词拼写1. adjust2. relevant3. privilege4. financial5. participates6. purchases7. distribution8.
26、secure9. remote10. astronauts . 用方框内所给短语的适当形式填空1. heard from2. the other day3. make any difference4. do with5. in the center of. 完成句子1. heard from2. is dying to3. came across4. have dried up5. to dry out提升练习.单项填空1. 解析：选C。in which表达“in the play”的概念，意为“在剧中（扮演角色）”。其他选项介词均搭配错误。2. 解析：选A。考查with的复合结构。noise
27、与go on之间呈主动关系，因此用“with+n.+doing”的形式。3. 解析：选A。cost在这里意为“消耗掉”。句意为：去年他粗心的驾驶让他失去了生命。4. 解析：选A。第一空使用被动语态表达被动含义，第二空用included作定语，放在所修饰词后面；如果用including，必须放在所修饰词前面。故选A。5. 解析：选B。laid是lay的过去时，意为“摆放”，为及物动词。6. 解析：选A。句意为：即使科学家知道哪里发生风暴，风也会突然改变，把风暴带到别的方向。even if在这里引导让步状语从句。7. 解析：选D。I与后面的动词短语构成了定语从句，省略了who/whom。而come
28、 across意为“偶然遇到”。8. 解析：选C。句意为：这个组织急需要人手。be in need of意为“需要”。9. 解析：选A。sound在这里是连系动词，因此后面跟形容词作表语。10.解析：选D。otherwise在这里相当于if not，意为“否则”。. 完形填空1. 解析：选B。根据第二段第一句话可知，答案选B。call for号召。2. 解析：选A。根据下文支持改革和持反对意见的人的观点及其原因可知答案。3. 解析：选C。根据常识可知，西方国家每次竞选，候选人及其支持者都会花大量的钱进行宣传。4. 解析：选B。候选人及其支持者花费如此多的钱就是为了竞争政府的某个职位。5. 解析
29、：选A。raise money募集资金。竞选者要竞选成功，需要大量的资金用于宣传。因此竞选之前要想方设法募集资金。根据后一句中的“money raising events”也可得知答案。6. 解析：选D。候选人在募集资金的过程中会出现很多问题，出现问题时政府工作人员就要进行协调，他们可能因为解决这些问题而无暇顾及自己的主要工作。attend负责，处理。7. 解析：选C。上文提到了改革的一个原因，本段是解释另一个原因。8. 解析：选C。own与control同义，意为“控制”。9. 解析：选C。case情况。本段解释的是一些人主张改革的原因，是担心候选人因为钱而受到某个组织的控制。他们之所以担心
30、是因为有时候情况就是这样。10. 解析：选A。上文所列举的是一些人主张改革的原因。本句起承上启下的作用，引出站在另一方立场上的人的观点及其原因。11. 解析：选B。句意为：你称呼某些东西为改革，而改革未必就是更好的。12. 解析：选A。如果政府能限制人对外界进行宣传，那么人的言论自由权就变的名存实亡，毫无意义了。13. 解析：选D。联系上文及常识可知，如果要想竞选成功，候选人或某个组织必须对公众进行宣传，获得群众的支持和选票。14. 解析：选D。结合句意及常识可知，要想宣传自己的观点或看法，必须在媒体上大肆宣传，而宣传的主要途径就是广告。15. 解析：选D。要想在媒体上宣传，必须做大量的广告，
31、而广告势必需要大量的资金做后盾。16. 解析：选C。根据第四段最后一句话可得知答案。17. 解析：选B。本篇介绍的是关于候选人所用奖金的改革问题，都是关于政治方面的问题。反对人士认为政府不能限制人的言论自由，不能限制人们在政治方面的谈论自由。18. 解析：选D。本句与上一句为递进关系。句意为：政府更不能干涉人们决定赞成哪位候选人。19. 解析：选C。本句为本段的总结句，与第一段首句相对应。20. 解析：选B。make sense有意义，有道理。. 阅读理解1. 解析：选A。细节理解题。根据第一段第二句“Subterranean insects issue chemical warning si
32、gnals through the leaves of the plant”可知，地下昆虫能通过植物的叶子发出一种化学物质，作为信号对地上昆虫进行警告。故选A。 2. 解析：选C。细节推理题。第二段第一句“Aboveground, leaf-eating insects . rooteating insects”提到，地上的昆虫更喜欢没有被地下昆虫占领的植物。联系本段最后一句“This messaging makes . for the same plant”可知，当地上昆虫发现植物已经被地下昆虫占领时，它们通常会选择离开。3. 解析：选B。细节推断题。根据第三段第一句“In recent y
33、ears it . and vice versa”可知，如果植物没有被地下的食草昆虫占领，地上昆虫就繁殖得快些。句意为：近些年来的研究发现：如果地上昆虫赖以生存的植物被地下的食草昆虫占领，地上昆虫的繁殖速度就会减慢，反之亦然。4. 解析：选D。词义猜测题。第四段第一句中的“namely the natural enemy of caterpillars”意为“也就是毛虫的天敌”。a third party这里包含寄生蜂。5. 解析：选C。标题归纳题。C项的内容形象地表现出了昆虫间交流的独特方式，其根据在第一段第一句“. insects can communicate with each other by using plants as telephones”。