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1、2017年江苏省专转本英语模拟试题第九套PartIReadingcomprehension:(共20小题,每题2分,共40分)Directions:Therearefourpassagesinthispart.Eachpassageisfollowedbysomequestionsorunfinishedstatements.ForeachofthemtherearefourchoicesmarkedA,B,C,D.Youshoulddecidethebestchoiceandmarkthecorrespondingletteron
2、theAnswerSheetwithasinglelinethroughthecenter.Passage1Electriccarsaredirty.Infact,notonlyaretheydirty,theymightevenbemoredirtythantheirgasoline-poweredcousins. PeopleinCalifornialovetotalkabout“zero-emissionsvehicles,”butpeopleinCaliforniaseemtobecluelessaboutwhereele
3、ctricitycomesfrom.Powerplantsmostallusefiretomakeit.Asidefromthefewfolkswhohavetheirroofscoveredwithsolarcells,wegetourelectricityfromgenerators.Generatorsarefueledbysomething—usuallycoal,oil,butalsobyheatgeneratedinnuclearpowerplants.Thereareafewwindfarmsandgeothermal
4、plantsaswell,butbyfarwegetelectricitymainlybyburningsomething.examda.com Inotherwords,those“zero-emissions”carsarelikelycoal-burningcars.It'sjustthecoalisburnedsomewhereelsesoitlooksclean.Itisnot.It’sasiftheCaliforniaGreensarecoveringtheireyes—“IfIcan’tseeit,it’snotha
5、ppening.”Gasolineisanincrediblyefficientwaytopoweravehicle;agallonofgashasalotofenergyinit.Butwhenyoutakethatgas(oranotherfuel)andfirstuseittomakeelectricity,youwasteanicepartofthatenergy,mostlyintheformofwastedheat—atthegenerator,throughthetransmissionlines,etc. Agal
6、lonofgasmaypropelyourcar25miles.Buttheelectricityyougetfromthatgallonofgaswon'tgetyounearlyasfar—soelectriccarsburnmorefuelthangas-poweredones.Ifourelectricitycamemostlyfromnukes,orgeothermal,orhydro,orsolar,orwind,thenanelectriccartrulywouldbeclean.Butforpolitical,tec
7、hnical,andeconomicreasons,wedon’tusemuchofthoseenergysources. Inaddition,electriccars’batterieswhicharepoisonousforalongtimewilleventuallyendupinalandfill.Andfinally,whencarsarethepolluters,thepollutionisspreadacrossalltheroads.Whenit’sapowerplant,though,allthejunkisi
8、noneplace.Natureisverygoodatcleaningupwhenthingsarenottooconcentrated,butittakesalotlongerwhenallthegarbageisinonespo