2023年研究生类研究生管理科学入学考试(GMAT)参考历年高频考点试题附答案难题带详解

2023年研究生类研究生管理科学入学考试(GMAT)参考历年高频考点试题附答案难题带详解卷I一.历年考点试题黑钻版(共50题)1.

Ifthevariables,X,Y,

andZtakeon

onlythevalues10,

20,30,40,50,60,or70withfrequenciesindicatedbytheshadedregionsabove,forwhichofthefrequencydistributionsisthemeanequaltothemedian?A.XonlyB.YonlyC.ZonlyD.XandYE.XandZ2.Atthewholesalestoreyoucanbuyan8-packofhotdogsfor$1.55,a20-packfor$3.05,anda250-packfor$22.95.Whatisthegreatestnumberofhotdogsyoucanbuyatthisstorewith$200?A.1,108B.2,100C.2,108D.2,124E.2,2563.Theproposaltoextendclinicaltrials,whichareroutinelyusedassystematictestsofpharmaceuticalinnovations,tonewsurgicalproceduresshouldnotbeimplemented.Thepointisthatsurgicalproceduresdifferinoneimportantrespectfrommedicinaldrugs:acorrectlyprescribeddrugdependsforitseffectivenessonlyonthedrug'scomposition,whereastheeffectivenessofeventhemostappropriatesurgicalprocedureistransparentlyrelatedtotheskillsofthesurgeonwhousesit.

ThereasoningintheargumentisflawedbecausetheargumentA.doesnotconsiderthatnewsurgicalproceduresmightbefoundtobeintrinsicallymoreharmfulthanthebesttreatmentpreviouslyavailable.B.ignoresthepossibilitythatthechallengedproposalisdeliberatelycrudeinawaydesignedtoelicitcriticismtobeusedinrefiningtheproposal.C.assumesthatasurgeon'sskills

remainunchangedthroughoutthesurgeon'sprofessionallife.D.describesadissimilaritywithoutcitinganyscientificevidencefortheexistenceofthatdissimilarity.E.rejectsaproposalpresumablyadvancedingoodfaithwithoutacknowledginganysuchgoodfaith.4.CompanyPhad15percentmoreemployeesinDecemberthanithadinJanuary.IfCompanyPhad460employeesinDecember,howmanyemployeesdidithaveinJanuary?A.391B.400C.410D.423E.4455.Inopposingthe1970CleanAirAct,theUnitedStatesautomobileindustryarguedthatmeetingtheact'sstandardsforautomobileemissionswasneithereconomicallyfeasiblenorenvironmentallynecessary.However,thecatalyticconverter,inventedin1967,enableautomakerstomeetthe1970standardsefficiently.Currently,automakersarelobbyingagainstthegovernment'sattempttopasslegislationthatwouldtightenrestrictionsonautomobileemissions.Theautomakerscontendthatthesenewrestrictionswouldbeoverlyexpensiveandunnecessarytoeffortstocurbairpollution.Clearly,theautomobileindustry'spositionshouldnotbeheeded.

Whichoneofthefollowing,iftrue,lendsthemostsupporttotheautomakers'currentposition?A.Themorestringentthelegislationrestrictingemissionsbecomes,themoredifficultitbecomesforautomakerstoprovidetherequiredtechnologyeconomically.B.Emissions-restrictiontechnologycanoftenbeengineeredsoastoavoidreducingtheefficiencywithwhichanautomobileusesfuel.C.Noteverynewpieceoflegislationrestrictingemissionsrequiresnewautomotivetechnologyinorderforautomakerstocomplywithit.D.Themoreautomobilesthereareontheroad,themorestringentemissionrestrictionsmustbetopreventincreasedoverallairpollution.E.Unlessforcedtodosobythegovernment,automakersrarelymakechangesinautomotivetechnologythatisnotrelatedtoprofitability.6.Awindowisintheshapeofaregularhexagonwitheachsideoflength80centimeters.Ifadiagonalthroughthecenterofthehexagoniswcentimeterslong,thenw=A.80B.120C.150D.160E.2407.Whatisthegreatestpossiblelengthofapositiveintegerlessthan1,000?A.10B.9C.8D.7E.68.Financingforalargeconstructionprojectwasprovidedbyagroupofbanks.Whenthemoneywasgonebeforetheprojectwascompleted,thebanksapprovedadditionalloans.Now,withfundsusedupagainandcompletionstillnotathand,thebanksrefusetoextendfurtherloans,althoughwithoutthoseloans,theprojectisdoomed.

Whichofthefollowing,iftrue,bestexplainswhythebank'scurrentreactionisdifferentfromtheirreactioninthepreviousinstanceofdepletionoffunds?A.Thebankshavereassessedtheincomepotentialofthecompletedprojectandhaveconcludedthattotalincomegenerablewouldbelessthantotalinterestdueontheoldplustheneedednewloans.B.Thebankshaveidentifiedseveralotherprojectsthatofferfasterrepaymentoftheprincipalifloansareapprovednowtogetthoseprojectsstarted.C.Thebankshadagreedwiththeborrowersthattheconstructionloanswouldbesecuredbythecompletedproject.D.Thecostoverrunswerelargelyduetounforeseeableproblemsthataroseinthemostdifficultphaseoftheconstructionwork.E.Theprojectstimulatedthedevelopmentandrefinementofseveralnewconstructiontechniques,whichwillmakeiteasierandcheapertocarryoutsimilarprojectsinthefuture.9.Arightcircularconeisinscribedinahemispheresothatthebaseoftheconecoincideswiththebaseofthehemisphere.Whatistheratiooftheheightoftheconetotheradiusofthehemisphere?

A.

B.1:1

C.

D.

E.2:110.Atypeofextra-largeSUVaverages12.2milespergallon(mpg)onthehighway,butonly7.6mpginthecity.Whatisthemaximumdistance,inmiles,thatthisSUVcouldbedrivenon25gallonsofgasoline?A.190B.284.6C.300D.305E.31211.Ify≠3andisaprimeintegergreaterthan2,whichofthefollowingmustbetrue?

Ⅰ．x=y

Ⅱ．y=1

Ⅲ．xandyareprimeintegers.A.NoneB.ⅠonlyC.ⅡonlyD.ⅢonlyE.ⅠandⅢ12.Automotiveaccidentsareoneoftheleadingcausesofdeathinchildren.Childsafetyadvocatesarguethatharshpenaltiesshouldbeimposedondriverswhofailtoplacechildrenunder30poundsinrear-facingchildren'sseatsintherearofthecarwheneveracarisinmotion.Suchpenalties,theyargue,willhelpsavechildren'slives.

Allofthefollowingstatementssupporttheargumentofthechildsafetyadvocates

EXCEPT:A.Therearseatsofacararesaferforallpassengers,bothadultsandchildren,intheeventofanaccident.B.Studieshaveshownthatchildreninrear-facingseatshavebeenshowntosustainlessseriousinjuriesinaccidentsthanchildreninfront-facingseats.C.Studieshaveshownthatchildrenunder30poundscansustainseriousinjuriesinevenminoraccidentsiftheyarenotproperlyrestrained.D.Studieshaveshownthatchildrenbetween60and90poundsaresafestinacarwhenusingbothaseatbeltandaproperlysizedboosterseat.E.Somedriverswillnotabidebyregulationsunlesstheyareforcedtodosobythethreatofharshpenalties.13.Chris:Hundredsoftrafficaccidentsannuallyareattributabletothepoorconditionofourcity'sstreets.Thestreetsmustthereforeberepairedtosavelives.

Leslie:Forlessthanthecostofthoserepairs,thecitycouldimproveitsmasstransitsystemandthusdramaticallyreducetrafficcongestion,whichcontributessignificantlytothosetrafficaccidents.Thecitycannotaffordtodoboth,soitshouldimprovemasstransit,becausereducedtrafficcongestionhasadditionaladvantages.

WhichofthefollowingbestdescribesthepointatissuebetweenChrisandLeslie?A.Whetheracertainprobleminfactexists.B.Howacertainproblemcameintobeing.C.Whoisresponsibleforaddressingacertainproblem.D.Whetherthecityhassufficientfinancialresourcestoaddressacertainproblem.E.Howthecitycanbestaddressacertainproblem.14.

Thefigureaboveshowsapatharoundatriangularpieceofland.Marywalkedthedistanceof8milesfromPtoQandthenwalkedthedistanceof6milesfromQtoR.IfTedwalkeddirectlyfromPtoR,bywhatpercentdidthedistancethatMarywalkedexceedthedistancethatTedwalked?A.30%B.40%C.50%D.60%E.80%15.Between14,000and8,000B.C.theicecapthatcoverednorthernAsia,Europe,andAmericabegantomelt,uncoveringvastnewareasthatweretobeoccupiedbymigratingpeoplesmovingnorthward.A.begantomelt,uncoveringvastnewareasthatweretobeoccupiedB.beganmelting,touncovervastnewareastobeoccupiedC.began,bymelting,touncovervastnewareasforoccupationD.began,aftermelting,uncoveringvastnewareaswhicharetobeoccupiedE.wouldbegintouncover,throughmelting,vastnewareasforoccupation16.Asociety'sinfantmortalityrateisanacceptedindicatorofthatsociety'sgeneralhealthstatus.EventhoughinsomelocalitiesintheUnitedStatestherateishigherthaninmanydevelopingcountries,intheUnitedStatesoveralltheratehasbeensteadilydeclining.Thisdeclinedoesnotnecessarilyindicate,however,thatbabiesintheUnitedStatesarenow,ontheaverage,healthieratbirththantheywereinthepast.Whichoneofthefollowingreasons,iftrue,moststronglysupportstheclaimmadeaboveabouttheimplicationsofthedecline?A.Thefigureforinfantmortalityiscompiledasanoverallrateandthusmasksdeficienciesinparticularlocalities.B.LowbirthweightisacontributingfactorinmorethanhalfoftheinfantdeathsintheUnitedStates.C.TheUnitedStateshasbeendevelopingandhasachievedextremelysophisticatedtechnologyforsavingprematureandlow-birth-weightbabies,mostofwhomrequireextendedhospitalstays.D.InelevenstatesoftheUnitedStates,theinfantmortalityratedeclinedlastyear.E.Babieswhodonotreceiveadequateattentionfromacaregiverfailtothriveandsotheygainweightslowly.17.Salesoftelephoneshaveincreaseddramaticallyoverthelastyear.Inordertotakeadvantageofthisincrease,MammothIndustriesplanstoexpandproductionofitsownmodeloftelephone,whilecontinuingitsalreadyveryextensiveadvertisingofthisproduct.Whichofthefollowing,iftrue,providesmostsupportfortheviewthatMammothIndustriescannotincreaseitssalesoftelephonesbyadoptingtheplanoutlinedabove?A.Althoughitsellsallofthetelephonesthatitproduces,MammothIndustries'shareofalltelephonesaleshasdeclinedoverthelastyear.B.MammothIndustries'averageinventoryoftelephonesawaitingshipmenttoretailershasdeclinedslightlyoverthelastyear.C.AdvertisinghasmadethebrandnameofMammothIndustries'telephoneswidelyknown,butfewconsumersknowthatMammothindustriesownsthisbrand.D.MammothIndustries'telephoneisoneofthethreebrandsoftelephonethathavetogetheraccountedforthebulkofthelastyear'sincreaseinsales.E.Despiteaslightdeclineintheretailprice,salesofMammothIndustries'telephoneshavefalleninthelastyear.18.Capuchinmonkeysoftenrubtheirbodieswithacertaintypeofmillipede.Laboratorytestsshowthatsecretionsfromthebodiesofthesemillipedesarerichintwochemicalsthatarepotentmosquitorepellents,andmosquitoescarryparasitesthatdebilitatecapuchins.Somescientistshypothesizethatthemonkeysrubtheirbodieswiththemillipedesbecausedoingsohelpsprotectthemfrommosquitoes.

Whichofthefollowing,iftrue,providesthemostsupportforthescientists'hypothesis?______A.Asinglemillipedeoftengetspassedaroundamongseveralcapuchins,allofwhomrubtheirbodieswithit.B.Thetwochemicalsthatrepelmosquitoesalsorepelseveralothervarietiesofinsects.C.Thecapuchinsrarelyrubtheirbodieswiththemillipedesexceptduringtherainyseason,whenmosquitopopulationsareattheirpeak.D.Althoughthecapuchinseatseveralspeciesofinsects,theydonoteatthetypeofmillipedetheyusetorubtheirbodies.E.Thetwoinsect-repellingchemicalsinthesecretionsofthemillipedesarecarcinogenicforhumansbutdonotappeartobecarcinogenicforcapuchins.19.

Onthenumberlineabove,thesegmentfrom

0to1

hasbeendividedintofifths,

asindicatedbythelargetickmarks,andalsointosevenths,asindicatedbythesmalltickmarks.Whatistheleastpossibledistancebetweenanytwoofthetickmarks?

20.

Thefigureaboveshowstheshapeofasigntobeplacedinfrontofaflowerstore.Thesignhasasemicircleoneachsideofthesquare.Ifthesignis3centimetersthickandifeachsideofthesquareis50centimeterslong,whatisthevolume,incubiccentimeters,ofthesign?A.1,250π+2,500B.3,750πC.3,750π+7,500D.5,000π+7,500E.11,250π21.X+5，Y+5，Z+5的标准方差(standarddeviation)是多少?

(1)X，Y的标准方差大于0.3。

(2)X，Y，Z的标准方差等于0.2。A.条件(1)充分，但条件(2)不充分．B.条件(2)充分，但条件(1)不充分．C.条件(1)和(2)单独都不充分，但条件(1)和条件(2)联合起来充分．D.条件(1)充分，条件(2)也充分．E.条件(1)和条件(2)单独都不充分，条件(1)和条件(2)联合起来也不充分．22.Thebankholds$3billioninloansthatareseriouslydelinquentorinsuchtroublethattheydonotexpectpaymentswhendue.A.theydonotexpectpaymentswhenB.itdoesnotexpectpaymentswhenitisC.itdoesnotexpectpaymentstobemadewhentheyareD.paymentsarenottobeexpectedtobepaidwhenE.paymentsarenotexpectedtobepaidwhentheywillbe23.Infisheriesingeneral,whenalargeharvestistakenoneyear,therewillbefewerfishavailabletobeharvestedinthefollowingyear,leadingtodecreasingyieldsofmostfishspeciesovertime.TheMainelobsterisananomaly,however.EventhoughthevastnumberoflobstertrapscoveringtheNewEnglandcoastpullinmorelobsterseveryyear,thenumberoflobstersinthewaterhasshownnosignsofdecreasing.

Whichofthefollowing,iftrue,mosthelpstoexplaintheapparentanomalyconcerningthenumberofMainelobsters?A.Thedeclineofotherfishspeciesintheregionhasdeprivedthelobsterofitsnaturalfoodsourceofscavengedfish.B.Thebaitinlobstertrapsprovidesabundantfoodforyounglobsters,whicharestillsmallenoughtoswimoutofthetraps,leadingtomuchhighersurvivalratesamongyounglobstersthanwouldbeexpectedinnature.C.AsglobalwarmingheatsthewatersoftheAtlanticcoastline,theMainelobsterhasextendeditsnorthernrangetowellpastNovaScotia.D.Theever-increasingdemandforlobstersinseafoodrestaurantsandsteakhousesacrossthecountryhasdrivenacorrespondingincreaseinthesupplyoftheproduct.E.Theincreasedlobsterharvesthasresultedinmanyjuvenilelobstersbutveryfewbreeding-agelobsters,whichcouldresultinacrashinlobsternumbersinthenearfuture.24.Springtown'sfiredepartmentwantsthetowncounciltobuyitanotherladdertruck.Thesetrucksareusefulinfightingfiresinhigh-risebuildings.Thetowncouncilargues,however,thatSpringtownhasonlytwohigh-risebuildings,anditalreadyownsenoughladdertruckstofightanyfiresthere.So,theysay,Springtowndoesnotneedanotherladdertruck.

Thetowncouncil'sargumentassumesthatA.Springtowncannotaffordtobuyanotherladdertruck.B.Springtown'shigh-risebuildingsallmeetorexceedcurrentfiresafetystandards.C.thenumberofhigh-risebuildingsinSpringtownislikelytogrow.D.atleastoneofSpringtown'sladdertrucksisnotduetobepermanentlyremovedfromserviceintheimmediatefuture.E.itispossibletofightfiressuccessfullyinhigh-risebuildingswithoutusingladdertrucks.25.Whichofthefollowingrepresentpositivenumbers?

Ⅰ.-3-(-5)

Ⅱ.(-3)(-5)

Ⅲ.-5-(-3)A.ⅠonlyB.ⅡonlyC.ⅢonlyD.ⅠandⅡE.ⅡandⅢ26.Reportingonacivilwar,ajournalistencounteredevidencethatrefugeeswerestarvingbecausethegovernmentwouldnotpermitfoodshipmentstoarebel-heldarea.Governmentcensorsdeletedallmentionofthegovernment'sroleinthestarvationfromthejournalist'sreport,whichhadnotimplicatedeithernatureortherebelsinthestarvation.Thejournalistconcludedthatitwasethicallypermissibletofilethecensoredreport,becausethejournalist'snewsagencywouldprecedeitwiththenotice"Clearedbygovernmentcensors."

Whichoneofthefollowingethicalcriteria,ifvalid,wouldservetosupportthejournalist'sconclusionwhileplacingtheleastconstraintontheflowofreportedinformation?A.Itisethicalingeneraltoreportknownfacts,butunethicaltodosowhileomittingotherknownfactsiftheomittedfactswouldsubstantiallyalteranimpressionofapersonorinstitutionthatwouldbecongruentwiththereportedfacts.B.Inasituationofconflict,itisethicaltoreportknownfactsandunethicaltofailtoreportknownfactsthatwouldtendtoexonerateonepartytotheconflict.C.Inasituationofcensorship,itisunethicaltomakeanyreportifthegovernmentrepresentedbythecensordeletesfromthereportmaterialunfavorabletothatgovernment.D.Itisethicalingeneraltoreportknownfactsbutunethicaltomakeareportinasituationofcensorshipifrelevantfactshavebeendeletedbythecensor,unlesstherecipientofthereportiswarnedthatcensorshipexisted.E.Althoughitisethicalingeneraltoreportknownfacts,itisunethicaltomakeareportfromwhichacensorhasdeletedrelevantfacts,unlesstherecipientofthereportsiswarnedthattherewascensorshipandthereportedfactsdonotbythemselvesgiveamisleadingimpression.27.TomapEarth'sinterior,geologistsuseanetworkofseismometerstochartseismicwavesthatoriginateintheearth'scrustandricochetarounditsinterior,mostrapidlytravelingthroughcold,denseregionsandslowerthroughhotterrocks.A.interior,mostrapidlytravelingthroughcold,denseregionsandslowerB.interior,whichtravelmostrapidlythroughcold,denseregions,andmoreslowlyC.interior,travelingmostrapidlythroughcold,denseregionsandmoreslowlyD.interiorandmostrapidlytravelthroughcold,denseregions,andslowerE.interiorandthattravelmostrapidlythroughcold,denseregionsandslower28.Dostrongelectriccurrents,bymeansoftheelectromagneticfieldsthataccompanythem,causecancerinpeoplewholiveandworknearby?Telephonelineworkers,whoworknearsuchcurrentseveryday,canprovideatestcase.Theyshowelevatedlevelsofbraincancer;therefore,thehypothesisofelectromagneticcausationissupported.

Whichofthefollowing,iftrue,mostseriouslyweakenstheargument?A.Buryingpowerlinesandothermeasurestoprotectthepublicfromsuchelectromagneticfieldswouldbeprohibitivelyexpensive.B.Telephonelineworkersareexposedtolevelsofchemicalsolventshighenoughtocausebraincancer.C.Highexposuretostrongelectromagneticfieldsiscorrelatedwithaslightlyhigher-than-normalincidenceofchildhoodleukemia,whichisaformofcancer.D.Publichealthofficialswhofoundthatagroupofdifferentillnessesinpeoplelivingnearapowersubstationcouldnotreliablybeattributedtoitselectromagneticfieldwereaccusedofcoveringupthefacts.E.Telephonelineworkers,likemostpeoplehaveelectricalappliancesathome,andmostelectricalappliances,whenturnedon,aresurroundedbyanelectromagneticfieldofsomemeasurablelevel.29.Publichealthexpert:Increasingtheurgencyofapublichealthmessagemaybecounterproductive.Inadditiontoirritatingthemajoritywhoalreadybehaveresponsibly,itmayundermineallgovernmentpronouncementsonhealthbyconvincingpeoplethatsuchmessagesareoverlycautious.Andthereisnoreasontobelievethatthosewhoignoremeasuredvoiceswilllistentoshouting.

Thetwosectionsinboldfaceplaywhichofthefollowingrolesinthepublichealthexpert'sargument?A.Thefirstisaconclusionforwhichsupportisprovided,butisnottheargument'smainconclusion;thesecondisanunsupportedpremisesupportingtheargument'smainconclusion.B.Thefirstisapremisesupportingtheonlyexplicitconclusion;soisthesecond.C.Thefirstistheargument'smainconclusion;thesecondsupportsthatconclusionandisitselfaconclusionforwhichsupportisprovided.D.Thefirstisapremisesupportingtheargument'sonlyconclusion;thesecondisthatconclusion.E.Thefirstistheargument'sonlyexplicitconclusion;thesecondisapremisesupportingthatconclusion.30.Aboxcontains100balls,numberedfrom

1to100.Ifthreeballsareselectedatrandomandwithreplacementfromthebox,whatistheprobabilitythatthesumofthethreenumbersontheballsselectedfromtheboxwillbeodd?

31.Thehumancravingforsweetswasoncebeneficial:itattractedpeopletofoodsthatwerehealthful(ripefruit,forexample)inpreferencetofoodsthatwerenothealthful(unripefruit,forexample).However,nowthatsugarhasbeenrefined,itfollowsthatacravingforsweetsisnolongerbeneficial,becauserefinedsugarisnothealthful.

Whichofthefollowing,iftrue,wouldmoststrengthentheargumentabove?A.Somefoodscanbehealthfulwhencookedeveniftheyarenothealthfulwheneatenraw.B.Somepeoplewhocravesweetsaremorelikelytoeatapieceofripenedfruitthantheyaretoeatapieceofcandy.C.Peoplewhocravesweetsaremorelikelytoeatafoodthatcontainsrefinedsugarthananaturallysweetfoodlikeripefruit.D.Prehistorichumansprobablywerenotabletodistinguishbetweenhealthfulfoodsandunhealthfulfoodswithoutrelyingontheirsenseoftaste.E.Someunrefinedfoodstuffsarenomorenutritiousthantheirrefinedcounterparts.32.FishcurrentlycostsaboutthesameatseafoodstoresthroughoutEastvilleanditssurroundingsuburbs.Seafoodstoresbuyfishfromthesamewholesalersandatthesameprices,andotherbusinessexpenseshavealsobeenaboutthesame.Butnewtaxbreakswillsubstantiallylowerthecostofdoingbusinesswithinthecity.Therefore,inthefuture,profitmarginswillbehigheratseafoodstoreswithinthecitythanatsuburbanseafoodstores.

Forthepurposesofevaluatingtheargument,itwouldbemostusefultoknowwhether______A.morefishwholesalersarelocatedwithinthecitythaninthesurroundingsuburbs.B.anypeoplewhocurrentlyownseafoodstoresinthesuburbssurroundingEastvillewillrelocatetheirbusinessesnearertothecity.C.thewholesalepriceoffishislikelytofallinthefuture.D.fishhasalwayscostaboutthesameatseafoodstoresthroughoutEastvilleanditssurroundingsuburbs.E.seafoodstoreswithinthecitywillinthefuturesetpricesthatarelowerthanthoseatsuburbanseafoodstores.33.Inthemajorcitiesofindustrializedcountriesattheendofthenineteenthcentury,importantpublicplacessuchastheaters,restaurants,shops,andbankshadinstalledelectriclighting,butelectricitywasinlessthan1percentofhomes,wherelightingwasstillprovidedmainlybycandlesorgas.A.electricitywasinlessthan1percentofhomes,wherelightingwasstillB.electricitywasinlessthan1percentofhomesandlightingstillC.therehadbeenlessthan1percentofhomeswithelectricity,wherelightingwasstillbeingD.therewaslessthan1percentofhomesthathadelectricity,havinglightingthatwasstillE.lessthan1percentofhomeshadelectricity,wherelightinghadstillbeen34.IfcylinderPhasaheighttwicethatof

cylinderQandaradiushalfthatofcylinderQ,whatistheratiobetweenthevolumeofcylinderPandthevolumeofcylinderQ?A.1:8B.1:4C.1:2D.1:1E.2:135.TheMaxiluxcarcompany'sdesignforitsnewluxurymodel,theMax100,includedaspecialdesignforthetiresthatwasintendedtocomplementthemodel'simage.ThewinningbidforsupplyingthesetireswassubmittedbyRubco.AnalystsconcludedthatthebidwouldonlyjustcoverRubco'scostsonthetires,butRubcoexecutivesclaimthatwinningthebidwillactuallymakeaprofitforthecompany.

Whichofthefollowing,iftrue,moststronglyjustifiestheclaimmadebyRubco'sexecutives?A.InanyMaxiluxmodel,thesparetireisexactlythesamemakeandmodelasthetiresthataremountedonthewheels.B.RubcoholdsexclusivecontractstosupplyMaxiluxwiththetiresforanumberofothermodelsmadebyMaxilux.C.TheproductionfacilitiesfortheMax100andthoseforthetirestobesuppliedbyRubcoarelocatedveryneareachother.D.Whenpeoplewhohavepurchasedacarefullydesignedluxuryautomobileneedtoreplaceawornpartofit,theyalmostinvariablyreplaceitwithapartofexactlythesamemakeandtype.E.WhenMaxiluxawardedthetirecontracttoRubco,theonlycriteriononwhichRubco'sbidwasclearlyaheadofitscompetitors'bidswasprice.36.BrianandAndrea'sdog,Cubby,weighs

poundsmore

thanAndrea.Intermsofp.whatisCubby'sweightinpounds?

37.If2x+y=7andx+2y=5,then

A.1

B.

C.

D.

E.438.StemborersareinsectpeststhatoftenruinNorthAmericancorncrops.Onsomeothercontinents,cropdamagebystemborersiscontrolledbyacertainspeciesofwasp.Sincethesewaspscatnothingbutstemborers,importingthemintoNorthAmericawillkeepcropdamagefromstemborersundercontrolwithoutendangeringotherNorthAmericaninsectspecies.

Whichofthefollowingisanassumptiononwhichtheargumentdepends?A.CornistheprincipalfoodofstemborersthatliveoncontinentsotherthanNorthAmerica.B.ThewaspsarecapableofsurvivinginNorthAmericalongenoughtoeatsignificantnumbersofstemborers.C.NowaspinNorthAmericaiscloselyrelatedtothespeciesofwaspthateatsstemborers.D.OncontinentsotherthanNorthAmerica,thewaspscontrolstemborersmoreeffectivelythandoesanyotherpestcontrolmeasure.E.CorncropsoncontinentsotherthanNorthAmericaarenotdamagedbyanyinsectpestsotherthanstemborers.39.Asumof$200,000fromacertainestatewasdividedamongaspouseandthreechildren.Howmuchoftheestatedidtheyoungestchildreceive?

(1)Thespousereceivedofthesumfromtheestate,andtileoldestchildreceivedoftheremainder.

(2)Eachofthetwoyoungerchildrenreceived$12.500morethantheoldestchildand$62,500lessthanthespouse.A.条件(1)充分，但条件(2)不充分．B.条件(2)充分，但条件(1)不充分．C.条件(1)和(2)单独都不充分，但条件(1)和条件(2)联合起来充分．D.条件(1)充分，条件(2)也充分．E.条件(1)和条件(2)单独都不充分，条件(1)和条件(2)联合起来也不充分．40.InDecember1992TidevilleShoppingMallrepairedandimprovedthelightinginthemall'sparkinglots,andin1993cartheftsandattemptedcartheftsfromthoselotsdecreasedby76percentfromthepreviousyear.

Sincepotentialcarthievesaregenerallydeterredbygoodlighting,thedecreasecanbeattributedtotheseimprovements.

Whichofthefollowing,iftrue,mostheplstostrengthentheargumentabove?A.Bothin1992andin1993,mostofthecarsstolenfromthemall'sparkinglotswererelativelynewandexpensiveluxurymodels.B.Mostofthecarsthatwerestolenfromthemallin1992werestolenbetween11A.M.and4P.M.C.TidevilleShoppingMallisoneofonlythreeshoppingmallsintheTidevillearea.D.InthetownofTideville,wherethemallislocated,thenumberofcartheftswasaboutthesamein1993asin1992.E.In1993thenumberofsecurityofficerspatrollingthemall'sparkinglotsatnightwasd