交通大學遠程教育——大學英語課后練習題及答案

1、Unit1PartTwo:ReadPracticeReadThinkII.Answerthefollowingquestionsaccdingtothetext.1.WhatarethemaintypeofairPollutionAn.:Theseincludesmogacidrainthegreenhouseeffect“holes“intheozonelayer.2.WheredoesexhaustcomefromAn.:Theex

2、haustcomesfromburningfuelsinautomobileshomesindustries.3.WhyistheamountofcarbondioxideintheaircontinuingtoincreaseAn.:Carbondioxideisproducedwhenfuelsareburned.Plantsconvertcarbondioxidebacktooxygenbutthereleaseofcarbond

3、ioxidefromhumanactivitiesishigherthanthewldsplantscanprocess.Thesituationismadewsesincemanyoftheearthsfestsarebeingremovedplantlifeisbeingdamagedbyacidrain.4.CanpollutantsbecreatedbyindoactivitiesAn.:Yes.Somepollutantsca

4、nbecreatedbyindoactivitiessuchassmokingcooking.5.WhatisthefirststeptosolveairpollutionAn.:Thefirststeptosolveairpollutionisassessment.III.Putinthemissingwdsaccdingtothetext.Thereareseveralmaintypesofpollutionwellknowneff

5、ectsofpollution.Onetypeofairpollutionisthereleaseofparticlesintotheairfromburningfuelfenergy.Anothertypeofpollutionisthereleaseofharmfulgasesintheatmospherefmingsmogacidrain.Thegreenhouseeffectisalsoreferredtoasglobalwar

6、ming.Inmanycountriesinthewldstepsarebeingtakentostopthedamagetoourenvironmentfromairpollution.Theyhavesetcontrolsonpollutionemissionsftransptationvehiclesindustrywemustmeetthechallengeindertoassurethatahealthyenvironment

7、willexistfourselvesourchildren.ReadCompleteIV.Spellthefollowingwdswiththehelpoftheirmeaningsfirstletters.1.essentiala.absolutelynecessary.Vitallynecessary2.substancen.thatwhichhasmassoccupiesspace3.significanta.imptantof

8、consequencehavingexpressingameaning4.wellbeingn.acontentedstatebeinghappyhealthyprosperous5.exhaustn.gasesejectedfromanengineaswasteproducts6.convertv.tochangethenaturepurposefunctionofsomething7.reactionn.aprocessinwhic

9、honemesubstancesarechangedintoothers8.derivev.toobtaintocomefrom9.consequencen.theoutcomeofaneventespeciallyasrelativetoanindividual10.exposuren.thestateofbeingputintoasituationinwhichsomethingharmfuldangerousmightaffect

10、youV.Completeeachofthefollowingstatementswiththewdsyouhavelearnedinthetext.1.Heexplainedthathisdelaywasduetoanaccident.2.Feveryactionthereisanequaloppositereaction.3.Thisisoneofthemostsignificantstudiesofthesubject.4.Thi

11、sgardenhasthebestcollectionofnativeplants.Inadditionitcontainsnumeroustreesflowersfromoverseas.錢一旦花光了，我們就回不了家了。譯：Oncethemoneyhasgonewecannotgobackhome.一旦出版，這本詞典將會非常暢銷！譯：Onceprintedthisdictionarywillbeverypopular!4.示例：Onl

12、ythroughtheefftsofscientistsbusinessleaderslegislatsindividualscanwereducetheamountofairpollutiononthepla.Onlyinabigcitywasitpossibletobuyanewwheelchair.孩子們只有在長大了之后，才能明白父母的辛苦。譯：Onlyafterthechildrengrewupcouldtheyunderstt

13、heirparentshardwking.我們只有在山頂上才能看到整座城市的美景。譯：Onlyatthetopofthemountaincanweseethebeautifulscenesofthewholecity.5.示例：Thischallengemustbemetbyallofusindertoassurethatahealthyenvironmentwillexistfourselvesourchildren.Nothingc

14、anassurepermanenthappiness.他向我保證他已經完成了。譯：Heassuredmethathehadfinished.我可以向你保證這消息是可靠的。譯：Icanassureyouofthereliabilityofthenews.IX.TranslatethefollowingsentencesintoEnglish.1我們?yōu)轭櫩吞峁└鞣N優(yōu)質商品。譯：Wesupplyourcustomerswithavariety

15、ofgoodswithhighquality.2應該采取適當的措施保護當地的環(huán)境和歷史。譯：Properstepsshouldbetakentoprotectlocalenvironmenthisty.3只有用這種方式，你才能從你的錯誤中吸取教訓。譯：Onlyinthiswaycanyoulearnfmyourmistakes.4在大城市，空氣污染是個大問題，尤其是在發(fā)展中國家。譯：Airpollutionisabigproblemin

16、largecitiesespeciallyindevelopingcountries.5此外，為了解決污染問題，我們應該限制私人轎車的數量而增加公共汽車的數量。譯：Inadditionindertosolvethepollutionproblemweshouldlimitthenumberofprivatecarswhileincreasethenumberofpublicbuses.X.Translatethefollowingsen

17、tencesintoChinese.1.Eachoftheseproblemshasseriouseffectsonourhealthwellbeingaswellasonthewholeenvironment.譯：這些問題已嚴重影響到我們的健康和幸福，也影響到整個環(huán)境。2Itiscausedbychemicalreactionsbetweenpollutantsderivedfromdifferentsourcesprimarilya

18、utomobileexhaustindustrialemissions.譯：它是由來源不同的污染物之間的化學反應所導致，這些污染物主要是汽車尾氣和工業(yè)廢氣。3Inmanycountriesinthewldstepsarebeingtakentostopthedamagetoourenvironmentfromairpollution.譯：全世界許多國家正采取措施以制止空氣污染對環(huán)境的破壞。4Citiesareoftencentersof