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大学英语自考本科试题.pdf

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大学英语自考本科试题大学英语自考本科试题（1000字）SectionA:ReadingComprehensionDirections:Inthissection,thereareseveralpassagesfollowedbyquestionsorunfinishedstatements.Foreachofthem,therearefourchoicesmarkedA,B,CandD.YoushoulddecideonthebestchoiceandmarkthecorrespondingletterontheAnswerSheet.Passage1:Questions1to5arebasedonthefollowingpassage:Mostmoderncomputersareusedtosolveproblemsinmanyfields.However,theearlycomputerswerenotnearlyasuseful.Theywerebigandexpensiveandtheworktheydidwaslessvaluable.Thefirstcomputerswereinventedintheearly1940s.DuringWorldWarII,theU.S.governmentneededtosolveproblemsquickly.Theyaskedscientiststomakeamachinethatwouldbeabletohelpthem.ThescientistsbuiltacomputernamedENIAC.ENIACwasextremelylargeandusedabout18,000vacuumtubes.Ittookupawholeroom.ENIACwasveryslowcomparedwithmoderncomputers.Ittookseveralsecondstodoasimpleproblem,eventhoughamoderncomputercoulddoitinlessthanasecond.Scientistsallovertheworldknewthatcomputerswouldbeveryusefulinthefuture,though.Theearlycomputershelpedscientistsunderstandhowtheyworked.The1950swereanimportanttimeforcomputers.Thecomputersofthattimewerethefirstonesbuiltentirelywithelectronicswitches,calledtransistors.Thecomputersweremuchsmallerandfasterthanbefore.1.Accordingtothepassage,earlycomputerswere().A.smallB.cheapC.slowD.useful2.WhatdoestheabbreviationENIACstandfor?()A.ExtremelyNarrowImportantAutomaticComputerB.EastNuclearInternationalAdjustmentCommitteeC.ElectronicNumeralIntegratorandComputerD.EarlyNavigationalInputandControl3.WhydidtheU.S.governmentneedacomputerduringWorldWarII?()A.Tomaketheworkofscientistsmorevaluable.B.Tohaveamachinethatcouldsolveproblemsquickly.C.TohelpscientistsunderstandhowENIACworked.D.ToshowtheworldhowmuchbettertheU.S.wasthanothercountries.4.Whywasthe1950sanimportanttimeforcomputers?()A.Computerscouldnowbeusedinbusinesses.B.Theearlycomputersfinallybecameuseful.C.Scientistscouldbegintobuildsmallerandfastercomputers.D.Thescientistscoulduseelectronicswitchestobuildthem.5.Whatisthepassagemainlyabout?()A.Earlycompu