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1、课时作业(十四)模块5Unit 2 The environment(限时：30分钟).单项填空1Although the robot appeared smart, Jack still held doubt _ it could help doctors operate on the diseased part of the patient with expected accuracy.Awhether Bas Cthat Dwhich2_ the right decisions _ the future, we need to get as much information about t
2、he sales and marketing as we can. AMaking; concerned BMake; concerningCTo make; concerning DTo make; concerned3If we dont sell more goods，well have to cut back _ production _10% next year.Aupon; to Bon; by Cof; by Dfor; to4While building a tunnel through the mountain, _. Aan underground lake was dis
3、coveredBthere was an underground lake discoveredCa lake was discovered undergroundDthe workers discovered an underground lake5The campus shooting spread throughout the county，_to great concern about students safety at school.Ahaving led BledCleading Dto lead6_ from the space, the earth, with water _
4、 seventy percent of its surface, looks like a blue ball.ASeen; covered BSeen; coveringCSeeing; covering DSeeing; covered7The student _ in the games on the MP4 during class didnt notice his teacher behind him.Aabsorbed Bwas absorbedCto absorb Dabsorbing8The number of traffic accidents caused by drink
5、ing is _ as the number of those caused by nondrinking driving.Atwice as many Bmany as twiceCas twice large Dtwice as large9_ several times, the young scientist still kept on making his experiments.AHaving been failed BHaving failedCThough failed DBecause of failed 10As these new products are not sel
6、ling well，the members of the board have decided to _ production.Acut down Bcut down toCcut down on Dcut off11The workers are all going out to make the output _ three times what it was five years ago.Agrow to Bgrow upCgrow by Dgrow into12Since no one else has volunteered, Sheila will be _ food for th
7、e trip.Aresponsible to supplyBresponsible for supplyingCtake responsibilities to supplyDresponsible to supplying13The boy was having an operation on the stomach，tears _ down his cheeks quietly.Aflew Bflowing Cflown Dto flow14I would appreciate _， to be frank, if the goods could be delivered as soon
8、as possible.Ayou Bthis Cit Dmyself 15Lilys mobile phone was left in a taxi accidentally，never _again.Ato find Bto be foundCfinding Dbeing found.阅读理解The total area covered by rainforests was once found to be 14% of the Earths land surface. However, more than 50% of the original rainforest area is des
9、troyed. At present, rainforests cover only 6% of the land area. Natural and human threats are responsible for this loss of rainforests. Some of the natural threats to rainforests are below: One of the most destructive environmental threats to the rainforest is wildfire. Small fires destroy the groun
10、d covers and small plants. In the United States alone, rapidly spreading wildfire burns down more than 1 million acres of forest every year.The rainforest vegetation requires water and other plant growth factors for their survival. Long dry often weakens the plants, making them susceptible_to diseas
11、es, pest and fire breakouts. Also typhoons and storms result in damage to the rainforest, which are beyond recovery.Threats to the rainforest caused by human activities differ from natural threats. They cause complete damage to woodlands, in which case recovery is nearly impossible. In case of natur
12、al events, some parts of the forest ecosystem continue to work, which leads to slow recovery of lost habitats. Listed below are some human threats to the rainforest: Every minute, thousands of forest trees are cut down for use in building houses and furniture. So a large number of ancient forests in
13、 the world have been destroyed. Also the rise in population is linked with increased need for foods, which in turn, is related to deforestation for agricultural practices. Air pollution and water pollution are causing damage to every habitat, including the rainforest. You might have heard of acid ra
14、in, which when falls on leaves and plant parts, causes burning signs. The need for bamboos and trees in paper industry is another threat to the rainforest. Millions of plants are cut down to produce paper, so as to meet the growing demands of the public. No doubt, some of the reasons for reducing ra
15、inforests cannot be avoided. But, there are many things every individual can do to help protect the rainforests, such as planting trees and reducing exploitation of forests. Introducing public awareness programs to educate people about the importance of this natural resource will surely help in cons
16、erving rainforests.16In Paragraph 1, the writer uses the decreasing percentage of rainforest cover to _Aprove the environmental problem is more seriousBshow more rainforests are in danger across the earthClead in the topic of threats to rainforestsDremind readers of the importance of conserving rain
17、forests17The underlined part “susceptible_to” in Paragraph 3 can be replaced by _Aless important to Bfar away fromCresistant to Deasily affected by18How many natural threats to rainforests are mentioned in the passage?ATwo. BThree. CFour. DFive.19Which of the following correctly describes the differ
18、ence between natural and human threats?AThe damage caused by human activities to woodlands is unlikely to recover.BThe damage caused by natural events to rainforests can recover completely.CHabitats of forests damaged by natural events can recover slowly.DHuman activities cause fewer threats to rain
19、forests than natural events.20According to the passage, humans cause threats to rainforests by many means except by _Acutting down forest treesBpolluting the environmentCcreating manmade acid rainDdeveloping agricultural production.任务型阅读请认真阅读下列短文，并根据所读内容在文章后表格中的空格里填入一个最恰当的单词。注意：每个空格只填1个单词。In the pas
20、t, American families tended to be quite large. It is common that parents raise five or more children. Over the years, the size of the family has decreased. One reason for this is an increase in the cost of living. On average, children attend schools for more years than they used to, making them fina
21、ncially dependent on their families longer. Moreover, children nowadays are better dressed and have more money to spend on entertainment. The parents usually take the responsibility for all the expenses. Meanwhile, families are less close than they used to be. More and more American mothers work awa
22、y from home. The breakup of the family occurs when the parents divorce. A lot of children in the U. S. live part of their young lives with only one parent. Broken families usually result in problems for children and parents alike. Children blame themselves when their parents separate. They grow up f
23、eeling unsettled as they are moved back and forth between parents. Usually one parent is responsible for raising the children. These single parents must care for the childrens emotional and psychological needs while also supporting them financially. This is very demanding and leaves very little time
24、 for the parents own personal interests. Single parents often marry other single parents. In this type of family, unrelated children are forced to develop brother or sister relationship. The situations of many American families today are not good. However, recent signs indicate that things are getti
25、ng better. The divorce rate is declining. The rate of childbirth is rising. Perhaps Americans have learned how important families are. TitleThe 21._ of the structure of American familiesIntroductionNowadays the size of the family has become 22._ than in the past.23._ for the situationThe cost of liv
26、ing increases becausethe staying of the children at school is 24._.children like to wear better clothes.children pay more money for 25._.More mothers go out for jobs because they are also 26._ for all the familys expenses.The singleparent family increases because of parents 27._， which leads to many
27、 problems. Children dont feel 28._ when they are brought up in broken families.The parent has little time for his/her own interests because one parent is too 29._ taking care of children.ConclusionThe situations of American families in the future may get better because Americans have learned the 30.
28、_ of families.课时作业(十四).1.A考查名词性从句。doubt表示不确定的含义，后面的同位语从句由表示疑问或不确定的连词连接。故选A。句意：尽管那台机器人看起来很聪明，但杰克疑惑不定，他不知道机器人是否能高精度地帮助医生在病患部位实施手术。2C考查非谓语动词。根据语境可判断首空为非谓语动词形式作目的状语，故用不定式短语，由此排除A、B两项；第二空用concerning，意为“关于”，可理解为介词。句意：为了做出关于将来的正确决定，我们需要尽可能多的销售和市场信息。3B题意：我们若不能增加货物的销售量，明年就必须降低百分之十的产量。 cut back on“削减，缩减”，是固定短
29、语。by常用来表示程度和范围增减的幅度，符合题意。to表示减少或增加到。4D 根据分词状语的逻辑主语是句子主语可判断选D。5C考查非谓语动词。句意：校园枪杀事件传遍了整个县，也引起了人们对学生在校安全的关注。The campus shooting和lead之间是主谓关系，并作spread的伴随状语，所以用leading。6B 逻辑主语the earth和第一空的非谓语动词为被动关系，排除C、D两项。water与第二空非谓语动词为主动关系，排除A。7A 根据短语“be absorbed in”可判断选A，此处为过去分词短语作后置定语。8D考查倍数表达。the number of作主语时，其表语要
30、用large，不能用many；倍数词应放在同级比较句型中第一个as之前，综上所述本题应选D。9B 逻辑主语the young scientist和该空非谓语动词为主动关系，其动作发生在主句谓语动词之前，故用现在分词的完成式。10Ccut down 砍倒/减缩(费用); cut off 切掉，割。根据题意“在产品方面缩减”，应选C。11Agrow to 增加到(同become)；grow up 长大；grow into 变成。根据题意应选A。12B be responsible for doing sth.take responsibility to do sth. 负责做某事。13B考查非谓语
31、动词。根据句子结构可知，主句的主语是The boy，而tears则是flow的逻辑主语。在英语中两个句子主语不一致时，需要用独立结构来表达，即tears flowing down his cheeks quietly。原句为：The boy was having an operation on the stomach and tears were flowing down his cheeks quietly.14C考查句型“appreciate itif从句”，其中it作形式宾语。15B考查非谓语动词。句意：莉莉的手机忘在出租车里了，再也没有找到。手机是再也没有被找到，故用被动语态，所以用n
32、ever to be found作结果状语。.本文主要介绍雨林覆盖率正在严重下降的原因。16C推理判断题。第一段陈述雨林覆盖率正在严重下降之后，立即引入“Natural and human threats are responsible for this loss of rainforests.”，由此可判断选C。17D词义猜测题。根据“Long dry often weakens the plants”可知，久旱能弱化植物，自然植物就易受疾病、害虫及火灾的影响了，故选D。18B细节理解题。由第二、三段可知，文章提到的natural threats有：wildfire，long dry和typ
33、hoons and storms，故选B。19C细节理解题。根据第四段“In case of natural events, some parts of the forest ecosystem continue to work, which leads to slow recovery of lost habitats.”可判断选C。20C细节理解题。根据第六段“Air pollution and water pollution are causing damage to every habitat, including the rainforest. You might have hear
34、d of acid rain, which when falls on leaves and plant parts, causes burning signs.”可知，有害植物的acid rain不是人类有意制造的，而是人类污染环境的间接结果，由此判断选C。.21. development/change提炼概括题。纵观全文，主要讨论美国家庭结构的变化，故此得出答案。22. smaller提炼概括题。通过对第一段的理解，美国家庭过去与现在发生很大变化，因此与In the past, American families tended to be quite large相对应的就是现在美国家庭小了很多。23. Reasons词形转换题。根据第二段中One reason for this is an increase in the cost of living.及其后面内容的叙述，可以得出答案。24. longer25. entertainment26. responsible词性转换题。根据第二段中The parents usually take the responsibility for all the expenses.一句可以得出答案。27. divorce/separation28. settled/safe29. busy30. importance/value6