英语四级阅读理解练习及答案16年6月

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1、1)takearaincheck改期　　2)lostcount弄不清楚　　3)beinanotherworld精神恍惚;魂不守舍　　4)makeyourselfathome随意，随便　　5)saveyourbreath省口气吧;别白费口舌了　　6)makesense有意义，理解　　7)costsb.anarmandaleg非常昂贵　　8)burnaholeinone'spocket很快地被花光　　9)fillone'sshoes很好地顶替;令人满意地替代　　10)isicecold表示理所当然　　11)likeapplesandorange

2、s用来表示无法相比的事物　　12)loseone'strainof忘记　　13)meeteachotherhalfway相互妥协，让步　　14)onthedot准时;正点　　15)onceandforall最后一次;干脆　　16)outofearshot不在听力所及范围　　17)outofthisworld非常好　　18)playbyear随机应变，视情形而定　　19)ringabell令人想起某件事;听起来耳熟1．。。Ifthepopulationoftheearthgoesonincreasingatitspresentrate,the

3、rewilleventuallynotbeenoughresourceslefttosustainlifeontheplanet.Bythemiddleofthe21stcentury,ifpresenttrendscontinue,wewillhaveusedupalltheoilthatdrivesourcars,forexample.Evenifscientistsdevelopnewwaysoffeedingthehumanrace,thecrowdedconditionsonearthwillmakeitnecessaryforl

4、ustolookforopenspacesomewhereelse.Butnoneoftheotherplanetsinoursolarsystemarecapableofsupportinglifeatpresent.Onepossiblesolutiontotheproblem,however,hasrecentlybeensuggestedbyAmericanscientist,ProfessorCarlSagan.　　Saganbelievesthatbeforetheearth'sresourcesarecompleetelyex

5、hausteditwillbepossibletochangetheatmophereofVenusandsocreateanewworldalmostaslargeasearthitself.ThedifficultisthatVenusismuchhotterthantheearthandthereisonlyatinyamountofwaterthere.　　Saganproposesthatalgaeorganismsthatcanliveinextremelyhotorcoldatmospheresandatthesametime

6、produceoxygen,shouldbebredinconditionsimilartothoseonVenus.Assoonasthishasbeendone,thealgaewillbeplacedinsmallrockets.SpaceshipwillthenflytoVenusandfiretherocketsintotheatmosphere.Inafairlyshorttime,thealgewillbreakdownthecarbondioxideintooxygenandcarbon.　　Whenthealgaehave

7、donetheriwork,theatmospherewillbecomecooler,butbeformancansetfootonVenusitwillbeneccessaryfortheoxygentoproducerain.ThesurfaceoftheplanetwillstillbetoohotformantolandonitbuttherainwilleventuallyfallandinafewyearssomethinglikeearthwillbereproducedonVenus.　　1.Intelongrun,the

8、mostinsolubleproblemcausedbypopulationgrowthonearthwillprobablybethelackof______.　　a.food