大学英语四级模拟题四(含答案)VIP免费

大学英语四级模拟题四一二三四五六试卷总得分核查人PartOneReadingComprehension(2’×10=20’)Directions:Thereare2passagesinthissection.Eachpassageisfollowedbysomequestionsorunfinishedstatements.ForeachofthemtherearefourchoicesmarkedA),B),C)andD).YoushoulddecideonthebestchoiceandmarkthecorrespondingletterontheAnswerSheetwithasinglelinethroughthecentre.PassageOneAirpollutioncanspreadfromcitytocity.Itevenspreadsfromonecountrytoanother.SomenorthernEuropeancountrieshavehad“blacksnow”frompollutantsthathavetraveledthroughtheairfromothercountriesandhavefallenwiththesnow.Soairpollutionisreallyaglobalproblem.Airpollutioncankillbabies,olderpeople,andthosewhohaverespiratory（呼吸的）diseases.Asfoundincities,airpollutionincreasestherisksofcertainlungdiseases.Airpollutioncancausebothairplaneandcaraccidentsbecauseitcutsdownvisibility（能见度）.Thereareotherpossiblehealthdangersfromairpollutionthatwedon’tknowmuchabout.Forexample,scientistsaretryingtofindoutwhetherchemicalsthatreachusfromtheairmaycausechangesinourcells.Thesechangesmightcausebabiestobebornwithseriousbirthdefects.Scientistsaretryingtolearnhowallthemanychemicalsareapt（易于的）totakeintoourbodiesfromair,water,food,andevenmedicinesacttogethertoaffectourhealthandthewayourbodieswork.Thatisanotherreasonwhyitissoimportanttobegintocontrolpollutionnowinsteadofwaitinguntilwelearnalltheanswers.Airpollutioncostsusalotofmoney.Itcorrodes（腐蚀）ourbuildings.Itdamagesfarmcropsandforests.Ithasadestructiveeffectonourworksofart.Thecostofallthisdamagetoourgovernmentisgreat.Itwouldbemuchmoreworthwhile,bothforusandforthegovernment,tospendourtaxdollarsonairpollutioncontrol.1.Airpollutionmayleadtoairplaneaccidentsbecause.A.itmaycausepilotstobeillB.enginesmayfailfromtheair-bornedirtC.visibilityisreducedD.itbringsalotofblacksnow2.Scientistsaretryingtofindalinkbetweenpollutionand.A.intelligencelevelsB.birthproblemsC.man’sbehaviorD.thenervoussystem3.Scientistshavenotyetdetermined.A.alloftheeffectsofpollutiononthehumanbodyB.howpollutioncanbecontrolledsuccessfullyC.whentheatmospherefirstbecamepollutedD.howsomesnowbecomesblack4.Theauthorsuggeststhatbeforeairpollutionbecomesmoreserious,.A.factorieswillbeforcedtostopoperatingB.buildingsshouldbeprotectedC.theearthwillbegintogrowcolderD.moremoneyshouldbespenttosolvetheproblem5.Wecanconcludethat.A.civilizationmayberuinedifpollutionisnotcontrolledB.pollutionismoreseriousinEuropethanitisinAmericaC.mostpeopledonotknowthatpollutionisaseriousproblemD.weshouldlearnalltheanswersbeforewebegintocontrolpollutionPassageTwoStilettoheelscouldbebannedfromtheworkplacebecauseofhealthandsafetyreasons,accordingtoBritishTradeUnionbosses.TheTradeUnionCongress,predominantlymale,hasproposedamotionarguingthathighheelsaredisrespectfultowomenwhiletheyalsocontributetolongterminjuries.Theyproposeinsteadthatwomenwear“sensibleshoes”withaninchheellimitinanattempttoavoidfuturefootandbackpainaswellasinjuries.Themotionisduetobedebatedatnextmonth’sconference.Themotionstates:“CongressbelieveshighheelsmaylookglamorousontheHollywoodcatwalksbutarecompletelyinappropriatefortheday-to-dayworkingenvironment.Feetbeartheburdenofdailylife,andformanyworkersprolongedstanding,badlyfittedfootwear,andinparticularhighheelscanbeahazard.Aroundtwomilliondaysayeararelostthroughsicknessasaresultoflowerlimbdisorders.Wearinghighheelscancauselong-termfootprob...