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ID:17437448
大小:208.50 KB
页数:10页
时间:2018-08-31
《英语四级考试仔细阅读练习》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、2012年英语四级考试仔细阅读练习(4)PartIIReadingComprehension (35minutes) Directions:Thereare4passagesinthispart.Eachpassageisfollowedbysomequestionsorunfinishedstatements.ForeachofthemtherearefourchoicesmarkedA),B),C)andD).YoushoulddecideonthebestchoiceandmarkthecorrespondingletterontheAnswerSheet
2、withasinglelinethroughthecenter. Passageone Questions21to25arebasedonthefollowingpassage. Somepessimisticexpertsfeelthattheautomobileisboundtofallintodisuse.Theyseeadayinthenot-too-distantfuturewhenallautoswillbeabandonedandallowedtorust.Otherauthorities,however,thinktheautoishereto
3、stay.Theyholdthatthecarwillremainaleadingmeansofurbantravelintheforeseeablefuture. Themotorcarwillundoubtedlychangesignificantlyoverthenext30years.Itshouldbecomesmaller,safer,andmoreeconomical,andshouldnotbepoweredbythegasolineengine.Thecarofthefutureshouldbefarmorepollution-freethanp
4、resenttypes. Regardlessofitspowersource,theautointhefuturewillstillbethemainprobleminurbantrafficcongestion(拥挤).Oneproposedsolutiontothisproblemistheautomatedhighwaysystem. Whentheautoentersthehighwaysystem,aretractable(可伸缩的)armwilldropfromtheautoandmakecontactwitharail,whichissimila
5、rtothosepoweringsubwaytrainselectrically.Onceattachedtotherail,thecarwillbecomeelectricallypoweredfromthesystem,andcontrolofthevehiclewillpasstoacentralcomputer.Thecomputerwillthenmonitorallofthecar’smovements. Thedriverwilluseatelephonetodialinstructionsabouthisdestinationintothesyst
6、em.Thecomputerwillcalculatethebestroute,andreservespaceforthecarallthewaytothecorrectexitfromthehighway.Thedriverwillthenbefreetorelaxandwaitforthebuzzer(蜂鸣器)thatwillwarnhimofhiscomingexit.Itisestimatedthatanautomatedhighwaywillbeabletohandle10,000vehiclesperhour,comparedwiththe1,500to
7、2,000vehiclesthatcanbecarriedbyapresent-dayhighway. 21.Onesignificantimprovementinthefuturecarwillprobablybe________. A)itspowersource B)itsdrivingsystem C)itsmonitoringsystem D)itsseatingcapacity 22.Whatistheauthor’smainconcern? A)Howtorenderautomobilespollution-free. B)Howt
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