高中英语选择性必修三 Unit 3 Period 5 Using language(2) 课时练习（详解版）20202021学年

1、Unit3 Period 5 Using language（2）课时练习姓名：_学号：_得分：_限时：45分I:单词填空。（每个1分，共10分）The transport system cant cope with the v_ of passengers.(容量)Last week the operation r_ his eyesight.(恢复视力)3. Engineers carried out a thorough i_ of the water pump. (检查)4. The company was_ 20，000 for getting involved in illegal

2、trade. （罚款）5. Whatever you do will have a great i_（对有影响）society， so behave well. 6. The new edition of the dictionary with new idioms will _later this month，as you anticipate.(出版)7. The massive increase in spending failed to s_(维持)his life when he became seriously ill. 8. He isnt a silent boy. On th

3、e contrary，he f_（频繁）asks questions about the Internet.9. She b_good news to（向传播这个好消息） all her friends. 10. S_ the good chance or you will regret it. (抓住)【答案】1. volume 2. restored 3. inspection 4. fined 5. impact 6. be released 7. sustain 8. frequently 9.broadcast 10. SeizeII:根据汉语意思用恰当的结构完成句子。（每个2分，共

4、10分）1. Smoking _ his early death. There had been a prior case. (导致)2. I was nearly frozen _.寒风吹得我几乎冻僵了3. _，he hurried to the mall. 所有工作都做完了，他匆忙去了商场。4. Your monthly budget must_ the company on the first day of each month. （提交）5. Ever since our secretary walked out，the office has been _(混乱)【答案】1. cont

5、ributed to 2. with the freezing wind blowing. 3. With all the work finished 4. be submitted to 5.in chaosIII.阅读理解。（每个2.5分）AHumans produce more than 300 million tons of plastic every year. Almost half of that winds up in landfills(垃圾填埋场), and up to 12 million tons pollute the oceans. So far there is

6、no effective way to get rid of it, but a new study suggests an answer may lie in the stomachs of some hungry worms. Researchers in Spain and England recently found that the worms of the greater wax moth can break down polyethylene, which accounts for 40% of plastics. The team left 100 wax worms on a

7、 commercial polyethylene shopping bag for 12 hours, and the worms consumed and broke down about 92 milligrams, or almost 3% of it. To confirm that the worms chewing alone was not responsible for the polyethylene breakdown, the researchers made some worms into paste(糊状物) and applied it to plastic fil

8、ms. 14 hours later the films had lost 13% of their mass apparently broken down by enzymes (酶) from the worms stomachs. Their findings were published in Current Biology in 2017.Federica Bertocchini, co-author of the study, says the worms ability to break down their everyday food beeswax also allows t

9、hem to break down plastic. Wax is a complex mixture, but the basic bond in polyethylene, the carbon-carbon bond, is there as well, she explains, The wax worm evolved a method or system to break this bond. Jennifer DeBruyn, a microbiologist at the University of Tennessee, who was not involved in the

10、study, says it is not surprising that such worms can break down polyethylene. But compared with previous studies, she finds the speed of breaking down in this one exciting. The next step, DeBruyn says, will be to identify the cause of the breakdown. Is it an enzyme produced by the worm itself or by

11、its gut microbes(肠道微生物)?Bertocchini agrees and hopes her teams findings might one day help employ the enzyme to break down plastics in landfills. But she expects using the chemical in some kind of industrial process not simply millions of worms thrown on top of the plastic.1. What can we learn about

12、 the worms in the study?A. They take plastics as their everyday food.B. They are newly evolved creatures.C. They can consume plastics.D. They wind up in landfills.2. According to Jennifer DeBruyn, the next step of the study is to .A. identify other means of the breakdownB. find out the source of the

13、 enzymeC. confirm the research findingsD. increase the breakdown speed3. It can be inferred from the last paragraph that the chemical might .A. help to raise worms B. help make plastic bagsC. be used to clean the oceans D. be produced in factories in future4. What is the main purpose of the passage?

14、A. To explain a study method on worms.B. To introduce the diet of a special worm.C. To present a way to break down plastics.D. To propose new means to keep eco-balance.【文章大意】 本文是一篇科普知识类文章。从环保理念出发，文章围绕一种可以降解塑料的虫子大蜡螟展开，描述了研究进展及虫子能降解塑料的原理，即使用其胃中的酶降解塑料，为塑料污染问题提供了新的思路。1. C细节理解题。根据文章第二段中的“The team left 10

15、0 wax worms on a commercial polyethylene shopping bag for 12 hours, and the worms consumed and broke down about 92 milligrams, or almost 3% of it.”可知，这些虫子可以消耗聚乙烯购物袋，即塑料袋。故选C。2. B推理判断题。根据文章第二段中的“The next step, DeBruyn says, will be to identify the cause of the breakdown. Is it an enzyme produced by t

16、he worm itself or by its gut microbes (肠道微生物)？”可知，下一步是探究酶的来源。故选C。3. D推理判断题。根据文章最后一段“But she expects using the chemical in some kind of industrial process-not simply millions of worms thrown on top of the plastic”可知研究者希望那些化学物品可以批量生产，而不是将许多虫子直接扔在垃圾堆里。故选D。4. C写作意图题。全文都在围绕可以降解垃圾的虫子展开，文章的目的就是向读者呈现这种独特的降解

17、塑料的方式。故选A。BSince the first Earth Day in 1970, Americans have gotten a lot “greener” towards the environment. “We didnt know at that time that there even was an environment, let alone that there was a problem with it，” says Bruce Anderson, president of Earth Day USA.But what began as nothing importan

18、t in public affairs has grown into a social movement. Business people, political leaders, university professors, and especially millions of grassroots Americans are taking part in the movement. “The understanding has increased many, many times，” says Gaylord Nelson, the former governor from Wisconsi

19、n, who thought up the first Earth Day. According to US government reports, emissions(排放) from cars and trucks have dropped from 10.3 million tons a year to 5.5 million tons. The number of cities producing CO beyond the standard has been reduced from 40 to 9.Although serious problems still remain and

20、 need to be dealt with, the world is a safer and healthier place. A kind of “green thinking” has become part of practices.Great improvement has been achieved. In 1988 there were only 600 recycling programmes; today in 1995 there are about 6，600.Advanced lights, motors, and building designs have help

21、ed save a lot of energy and therefore prevented pollution.Twenty-five years ago, there were hardly any education programmes for environment. Today, its hard to find a public school, university, or law school that does not have such a kind of programme. “Until we do that, nothing else will change！” s

22、ays Bruce Anderson.5. According to Anderson, before 1970, Americans had little idea about _A. the social movement B. recycling techniquesC. environmental problems D. the importance of Earth Day 6. Where does the support for environmental protection mainly come from?A. The grassroots level. B. The bu

23、siness circle. C. Government officials. D. University professors. 7. What have Americans achieved in environmental protection?A. They have cut car emissions to the lowest. B. They have settled their environmental problems. C. They have lowered their CO levels in forty cities.D. They have reduced pol

24、lution through effective measures.8. What is especially important for environmental protection according to the last paragraph?A. Education. B. Planning. C. Green living. D. CO reduction. 【文章大意】 本文作者通过把美国现在的环境问题和以前的环境问题进行比较，尤其是几项数据的对比，说明了人们的环境保护意识有了很大的提高。环境教育在这其中起了很大的作用。 5. C细节理解题。根据第一段的“We didnt kn

25、ow at that time that there even was an environment, let alone that there was a problem with it，says Bruce Anderson”可知当时美国人对于环境问题没有足够的认识。6. A信息理解题。第二段第二句“Business people, political leaders, university professors, and especially millions of grassroots Americans are taking part in the movement.”强调了这项运动

26、的主要支持者是那些美国的基层民众，因此答案为A。7. D细节理解题。根据文章的第三段第一句可知汽车和卡车的排放量从10，300，000吨降到了5，500，000吨，故A项错误；根据第三段第二句可知一氧化碳排放超标的城市的数量从40个降到了9个，故C项错误；根据第三段第三句可知环境问题依然存在，有待解决，故B项错误；本段列举的数据证明了美国人采取了有效措施，减少了环境污染，因此答案为D。8. A推理判断题。根据文章最后一段中的“Twenty-five years ago, there were hardly any education programmes for environment. To

27、day, its hard to find a public school, university, or law school that does not have such a kind of programme.”可知，现在几乎每个学校都有环境保护方面的教育内容，这说明教育在环境保护方面起了重要的作用。故A正确。IV读后续写，阅读下面短文，根据所给情节进行续写，使之构成一个完整的故事。On a bright, warm July afternoon, Mac Hollan, a primary school teacher, was cycling from his home to Al

28、aska with his friends. One of his friends had stopped to make a bicycle repair, but they had encouraged Mac to carry on, and they would catch up with him soon. As Mac pedaled (骑行) along alone, he thought fondly of his wife and two young daughters at home. He hoped to show them this beautiful place s

29、omeday. Then Mac heard quick and loud breathing behind him. “Man, thats a big dog!” he thought. But when he looked to the side, he saw instantly that it wasnt a dog at all, but a wolf, quickly catching up with him. Macs heart jumped. He found out his can of hear spray. With one hand on the bars, he

30、fired the spray at the wolf. A bright red cloud enveloped the animal, and to Macs relief, it fell back, shaking its head. But a minute later, it was by his side again. Then it attacked the back of Macs bike, tearing open his tent bag. He fired at the wolf a second time, and again, it fell back only

31、to quickly restart the chase (追赶).Mac was pedaling hard now. He waved and yelled at passing cars but was careful not to slow down. He saw a steep uphill climb before him. He knew that once he hit the hill, hed be easy caught up and the wolfs teeth would be tearing into his flesh.At this moment, Paul

32、 and Becky were driving their car on their way to Alaska. They didnt think much of it when they saw two cyclists repairing their bike on the side of the road. A bit later, they spotted what they, too, assumed was a dog running alongside a man on a bike. As they got closer, they realized that the dog

33、 was a wolf. Mac heard a large vehicle behind him. He pulled in front of it as the wolf was catching up fast, just a dozen yards away now.注意： 1. 所续写短文的词数应为150左右； 2. 续写部分分为两段，每段的开头已为你写好；Paragraph 1:Thecarabruptlystoppedinfrontofhim._Paragraph 2:Afewminuteslater,theothertwocyclistsarrived. _【参考范文】The car abruptly stopped in front of him. Seeing Paul wave at him kindly and open the car door for him, Mac jumped off his bicycle and rushed into the car without any