大学英语四级模拟试题(1)2Questions15to17arebasedonthepassageyouhavejustheard.15.A）Toshowofftheirwealth.B）Tofeelgood.C）Toregaintheirmemory.D）Tobedifferentfromothers.16.A）Tohelpsolvetheirpsychologicalproblems.B）Toplaygameswiththem.C）Tosendshamtothehospital.D）Tomakethemawareofitsharmfulness.17.A）Theyneedcareandaffection.B）Theyarefondofround-the-worldtrips.C）Theyaremostlyfrombrokenfamilies.D）Theyarelikelytocommitcrimes.PassageThreeQuestions18to20arebasedonthepassageyouhavejustheard.18.A）Becauseitwastooheavy.B）Becauseitdidnotbendeasily.C）Becauseitdidnotshootfar.D）Becauseitsstringwasshort.19.A）Itwentoutofuse300yearsagoB）hwasinventedaltertheshorthow.C）Itwasdiscoveredbeforefireandthewheel.D）It”sstillinusetoday.20.A）Theyareaccurateandeasytopull.B）Theirshootingrangeis40yards.C）Theyareusuallyusedindoors.D）Theytook100yearstodevelop.PartIIReadingComprehension（35minutes）Directions：Thereare4passagesinthispart.Eachpassageisfollowedbysomequestionsorunfinishedstatements.ForeachofthemtherearefourchoicesmarkedA）,B）,C）andD）。YoushoulddecideonthebestchoiceandmarkthecorrespondingletterontheAnswerSheetwithasinglelinethroughthecenter.PassageOneQuestions21to25arebasedonthefollowingpassage.Designofallthenewtoolsandimplementsisbasedoncarefulexperimentswithelectronicinstruments.First,ahuman“guineapig”istestedusingaregulartool.Measurementsaretakenoftheamountofworkdone,andthebuildupofheatinthebody.Twistedjointsandstretchedmusclescannotperformaswell,ithasbeenfound,asjointsandmusclesintheirnormalpositions.Thesamepersonisthentestedagain,usingatooldesignedaccordingtothesuggestionsmadebyDr.Tichauer.Allthesetestshaveshownthegreatimprovementofthenewdesignsovertheold.OneoftheelectronicinstrumentsusedbyDr.Tichauer,themyograph（肌动记器）,makesvisiblethroughelectricalsignalstheworkdonebyhumanmuscle.Anothermachinemeasuresanydangerousfeaturesoftools,thusprovinginformationuponwhichtobaseanewdesign.Oneconclusionoftestsmadewiththismachineisthatatripodstepladderismorestableandsafertousethanonewithfourlegs.Thisworkhasattractedtheattentionofefficiencyexpertsandtime-and-motion-studyengineer,butitsvaluegoesfarbeyondthat.Dr.Tichauer”sfirstthoughtisforthehealthofthetooluser.Withtherepeateduseofthesametoolalldaylongonproductionlinesandinotherjobs,evenlightmanualworkcanputaheavystressononesmallareaofthebody.Intime,suchstresscancauseadisablingdisease.Furthermore,musclefatigueisaserioussafetyhazard.Efficiencyistheby-productofcomfort,Dr.Tichauerbelieves,andhisnewdesignsfortraditionaltoolshaveprovedhispoint.21.Whatareinvolvedinthedesignofanewtoolaccordingtothepassage？A）Electronicinstrumentsandaregulartool.B）Ahuman“guineapig”andaregulartool.C）Electronicinstrumentsandahuman“guineapig”。D）Electronicinstruments,ahuman“guineapig”andaregulartool.22.Fromthepassageweknowthatjointsandmusclesperformbestwhen__________________.A）theyaretwistedandstretchedB）theyareintheirnormalpositionsC）theyaretestedwithahuman“guineapig”D）theyaretestedwithelectronicinstruments23.A“myograph”（Para.2,Line1）isanelectronicinstrumentthat________________.A）isabletodesignnewtoolsB）measurestheamountofenergyusedC）enablepeopletoseethemuscularmovementsD）visualizeselectricalsignals24.Itcanbeinferredfromthepassagethat________________.A）astepladderusedtohavefourlegs.B）itisdangeroustousetoolsC）atripodissaferinatooldesignD）workersaresaferonproductionlines25.Dr.Tichauerstartedhisexperimentsinitiallyto_________________.A）improveefficiencyB）increaseproductionC）reduceworkloadD）improvecomfortQuestions26to30arebasedonthefollowingpassage：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.