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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.Youshoulddecidethebestchoiceandmarkthecorrespondingletteronth
2、eAnswerSheetwithasinglelinethroughthecenter.Passage1Electriccarsaredirty.Infact,notonlyaretheydirty,theymightevenbemoredirtythantheirgasoline-poweredcousins. PeopleinCalifornialovetotalkabout“zero-emissionsvehicles,”butpeopleinCaliforniaseemtobecluelessaboutwhereelectri
3、citycomesfrom.Powerplantsmostallusefiretomakeit.Asidefromthefewfolkswhohavetheirroofscoveredwithsolarcells,wegetourelectricityfromgenerators.Generatorsarefueledbysomething—usuallycoal,oil,butalsobyheatgeneratedinnuclearpowerplants.Thereareafewwindfarmsandgeothermalplants
4、aswell,butbyfarwegetelectricitymainlybyburningsomething.examda.com Inotherwords,those“zero-emissions”carsarelikelycoal-burningcars.It'sjustthecoalisburnedsomewhereelsesoitlooksclean.Itisnot.It’sasiftheCaliforniaGreensarecoveringtheireyes—“IfIcan’tseeit,it’snothappening.
5、”Gasolineisanincrediblyefficientwaytopoweravehicle;agallonofgashasalotofenergyinit.Butwhenyoutakethatgas(oranotherfuel)andfirstuseittomakeelectricity,youwasteanicepartofthatenergy,mostlyintheformofwastedheat—atthegenerator,throughthetransmissionlines,etc. Agallonofgasma
6、ypropelyourcar25miles.Buttheelectricityyougetfromthatgallonofgaswon'tgetyounearlyasfar—soelectriccarsburnmorefuelthangas-poweredones.Ifourelectricitycamemostlyfromnukes,orgeothermal,orhydro,orsolar,orwind,thenanelectriccartrulywouldbeclean.Butforpolitical,technical,andec
7、onomicreasons,wedon’tusemuchofthoseenergysources. Inaddition,electriccars’batterieswhicharepoisonousforalongtimewilleventuallyendupinalandfill.Andfinally,whencarsarethepolluters,thepollutionisspreadacrossalltheroads.Whenit’sapowerplant,though,allthejunkisinoneplace.Natu
8、reisverygoodatcleaningupwhenthingsarenottooconcentrated,butittakesalotlongerwhenallthegarbageisinonespo