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大学英语四级真题及答案第一套.docx

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大学英语四级真题及答案第一套大学英语四级真题及答案第一套Moreandmore,theoperationsofourbusinesses,governments,andfinancialinstitutionsarecontrolledbyinformationthatexistsonlyinsidecomputermemories.Anyonecleverenoughtomodifythisinformationforhisownpurposescanreapbigreward.Evenworse,anumberofpeoplewhohavedonethisandbeencaughtatithavemanagedtogetawaywithoutpunishment.It’seasyforcomputercrimestogoundetectedifnoonechecksuponwhatthecomputerisdoing.Butevenifthecrimeisdetected,thecriminalmaywalkawaynotonlyunpunishedbutwithaglowingrecommendationfromhisformeremployers.Ofcourse,wehavenostatisticsoncrimesthatgoundetected.Butit’sdisturbingtonotehowmanyofthecrimeswedoknowaboutweredetectedbyaccident,notbysystematicinspectionsorothersecurityprocedures.Thecomputercriminalswhohavebeencaughtmayhavebeenthevictimsofuncommonlybadluck.Unlikeotherlawbreakers,whomustleavethecountry,commitsuicide,orgotojail,computercriminalssometimesescapepunishment,demandingnotonlythattheynotbechargedbutthattheybegivengoodrecommendationsandperhapsotherbenefits.Alltoooften,theirdemandshavebeenmet.Why?Becausecompanyexecutivesareafraidofthebadpublicitythatwouldresultifthepublicfoundoutthattheircomputerhadbeenmisused.Theyhesitateatthethoughtofacriminalboastinginopencourtofhowhejuggled(诈骗)themostconfidential(保密)recordsrightunderthenosesofthecompany’sexecutives,accountants,andsecuritystaff.Andsoanothercomputercriminaldepartswithjusttherecommendationsheneedstocontinuehiscrimeselsewhere.26.Itcanbeconcludedfromthepassagethat_______________.A)itisstillimpossibletodetectcomputercrimestodayB)peoplecommitcomputercrimesattherequestoftheircompanyC)computercriminalsescapepunishmentbecausetheycan’tbedetectedD)computercrimesarethemostseriousproblemintheoperationoffinancialinstitutions27.Itisimpliedinthethirdparagraphthat_________________.A)mostcomputercriminalswhoarecaughtblametheirbadluckB)therapidincreaseofcomputercrimesisatroublesomeproblemC)mostcomputercriminalsaresmartenoughtocoveruptheircrimesD)manymorecomputercrimesgoundetectedthatarediscovered28