GMAT考试最新逻辑推理模拟试题.docx

GMAT考试最新逻辑推理模拟试题.docx

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GMAT考试最新逻辑推理模拟试题

GMAT考试最新逻辑推理模拟试题

1.Afterthenationalspeedlimitof55milesperhourwasimposedin1974,thenumberofdeathspermiledrivenonahighwayfellabruptlyasaresult.Sincethen,however,theaveragespeedofvehiclesonhighwayshasrisen,butthenumberofdeathspermiledrivenonahighwayhascontinuedtofall.Whichofthefollowingconclusionscanbeproperlydrawnfromthestatementsabove?

（A）Thespeedlimitaloneisprobablynotresponsibleforthecontinuedreductioninhighwaydeathsintheyearsafter1974.

（B）Peoplehavebeendrivinglesssince1974.

（C）Driver-educationcourseshavebeenmoreeffectivesince1974inteachingdriverstodrivesafely.

（D）Inrecentyearshighwaypatrolshavebeenlesseffectiveincatchingdriverswhospeed.

（E）Thechangeinthespeedlimitcannotberesponsiblefortheabruptdeclineinhighwaydeathsin1974.

2.Neighboringlandholders:

Airpollutionfromthegiantaluminumrefinerythathasbeenbuiltnexttoourlandiskillingourplants.Companyspokesperson:

Therefineryisnottoblame,sinceourstudyshowsthatthedamageisduetoinsectsandfungi.Whichofthefollowing,iftrue,mostseriouslyweakenstheconclusiondrawnbythecompanyspokesperson?

（A）Thestudydidnotmeasurethequantityofpollutantsemittedintothesurroundingairbythealuminumrefinery.

（B）Theneighboringlandholdershavemadenochangeinthewaytheytakecareoftheirplants.

（C）Airpollutionfromtherefineryhaschangedthechemicalbalanceintheplants’environment,allowingtheharmfulinsectsandfungitothrive.

（D）Pollutantsthatareinvisibleandodorlessareemittedintothesurroundingairbytherefinery.

（E）Thevariousspeciesofinsectsandfungimentionedinthestudyhavebeenoccasionallyfoundinthelocalityduringthepasthundredyears.

3.Salestaxestendtoberegressive,affectingpoorpeoplemoreseverelythanwealthypeople.Whenallpurchasesofconsumergoodsaretaxedatafixedpercentageofthepurchaseprice,poorpeoplepayalargerproportionoftheirincomeinsalestaxesthanwealthypeopledo.Itcanbecorrectlyinferredonthebasisofthestatementsabovethatwhichofthefollowingistrue?

（A）Poorpeopleconstitutealargerproportionofthetaxpayingpopulationthanwealthypeopledo.

（B）Poorpeoplespendalargerproportionoftheirincomeonpurchasesofconsumergoodsthanwealthypeopledo.

（C）Wealthypeoplepay,onaverage,alargeramountofsalestaxesthanpoorpeopledo.

（D）Thetotalamountspentbyallpoorpeopleonpurchasesofconsumergoodsexceedsthetotalamountspentbyallwealthypeopleonconsumergoods.

（E）Theaveragepurchasepriceofconsumergoodsboughtbywealthypeopleishigherthanthatofconsumergoodsboughtbypoorpeople.

4.Reviewinghistoricaldata,medicalresearchersinCaliforniafoundthatcountieswiththelargestnumberoftelevisionsetspercapitahavehadthelowestincidenceofaseriousbraindisease,mosquito-borneencephalitis.Theresearchershaveconcludedthatpeopleinthesecountiesstayindoorsmoreandthusavoidexposuretothedisease.Theresearchers’conclusionwouldbemoststrengthenedifwhichofthefollowingweretrue?

（A）Programsdesignedtocontrolthesizeofdisease-bearingmosquitopopulationshavenotaffectedtheincidenceofmosquitoborneencephalitis.

（B）Theoccupationsofcountyresidentsaffecttheirriskofexposuretomosquito-borneencephalitismorethandoestelevision-watching.

（C）Theincidenceofmosquito-borneencephalitisincountieswiththelargestnumberoftelevisionsetspercapitaislikelytodecreaseevenfurther.

（D）Themoretimepeopleinacountyspendoutdoors,thegreatertheirawarenessofthedangersofmosquito-borneencephalitis.

（E）Themoretelevisionsetstherearepercapitainacounty,themoretimetheaveragecountyresidentspendswatchingtelevision.

5.Thecity’spublictransportationsystemshouldberemovedfromthejurisdictionofthemunicipalgovernment,whichfindsitpoliticallyimpossibleeithertoraisefaresortoinstitutecost-savingreductionsinservice.Ifpublictransportationwerehandledbyaprivatefirm,profitswouldbevigorouslypursued,therebyeliminatingthenecessityforcoveringoperatingcostswithgovernmentfunds.Thestatementsabovebestsupporttheconclusionthat

（A）theprivatefirmsthatwouldhandlepublictransportationwouldhaveexperienceinthetransportationindustry

（B）politicalconsiderationswouldnotpreventprivatefirmsfromensuringthatrevenuescoveroperatingcosts

（C）privatefirmswouldreceivegovernmentfundingifitwereneededtocoveroperatingcosts

（D）thepublicwouldapprovethecost-cuttingactionstakenbytheprivatefirm

（E）themunicipalgovernmentwouldnotberesignedtoaccumulatingmerelyenoughincometocovercosts

6.Toenticecustomersawayfromcompetitors,RedLabelsupermarketshavebegunofferingdiscountsonhomeappliancestocustomerswhospend$50ormoreonanyshoppingtriptoRedLabel.RedLabelexecutivesclaimthatthediscountprogramhasbeenahugesuccess,sincecashregisterreceiptsof$50ormoreareupthirtypercentsincethebeginningoftheprogram.Whichofthefollowing,iftrue,mostseriouslyweakenstheclaimoftheRedLabelexecutives?

（A）MostpeoplewhoswitchedtoRedLabelaftertheprogrambeganspendmorethan$50eachtimetheyshopatRedLabel.

（B）Mostpeoplewhoseaveragegrocerybillislessthan$50wouldnotbepersuadedtospendmorebyanydiscountprogram.

（C）MostpeoplewhoreceiveddiscountsonhomeappliancesthroughRedLabel’sprogramwillshopatRedLabelaftertheprogramends.

（D）Sincethebeginningofthediscountprogram,mostofthepeoplewhospend$50ormoreatRedLabelarepeoplewhohaveneverbeforeshoppedthereandwhoseaveragegrocerybillhasalwaysbeenhigherthan$50.

（E）Almostallofthepeoplewhohavebegunspending$50ormoreatRedLabelsincethediscountprogrambeganarelongtimecustomerswhohaveincreasedtheaverageamountoftheirshoppingbillsbymakingfewertrips.

7.Throughoutthe1950’s,therewereincreasesinthenumbersofdeadbirdsfoundinagriculturalareasafterpesticidesprayings.Pesticidemanufacturersclaimedthatthepublicitygiventobirddeathsstimulatedvolunteerstolookfordeadbirds,andthattheincreaseinnumbersreportedwasattributabletotheincreaseinthenumberofpeoplelooking.Whichofthefollowingstatements,iftrue,wouldhelptorefutetheclaimofthepesticidemanufacturers?

（A）Thepublicitygiventobirddeathswaslargelyregionalandneverreachednationalproportions.

（B）Pesticidesprayingsweretimedtocoincidewithvariousphasesofthelifecyclesoftheinsectstheydestroyed.

（C）Noprovisionwasmadetoensurethatadeadbirdwouldnotbereportedbymorethanoneobserver.

（D）Initialincreasesinbirddeathshadbeennoticedbyagriculturalworkerslongbeforeanypublicityhadbeengiventothematter.

（E）Deadbirdsofthesamespeciesasthosefoundinagriculturalareashadbeenfoundalongcoastalareaswherenofarmingtookplace.

8.Teenagersareoftenpricedoutofthelabormarketbythegovernment-mandatedminimum-wagelevelbecauseemployerscannotaffordtopaythatmuchforextrahelp.Therefore,ifCongressinstitutesasubminimumwage,anewlowerlegalwageforteenagers,theteenageunemploymentrate,whichhasbeenrisingsince1960,willnolongerincrease.Whichofthefollowing,iftrue,wouldmostweakentheargumentabove?

（A）Since1960theteenageunemploymentratehasrisenwhentheminimumwagehasrisen.

（B）Since1960theteenageunemploymentratehasrisenevenwhentheminimumwageremainedconstant.

（C）Employersoftenhireextrahelpduringholidayandwarmweatherseasons.

（D）Theteenageunemploymentraterosemorequicklyinthe1970’sthanitdidinthe1960’s.

（E）Theteenageunemploymentratehasoccasionallydeclinedintheyearssince1960.

9.Whichofthefollowingbestcompletesthepassagebelow?

Thecomputerindustry’sestimatethatitlosesmillionsofdollarswhenusersillegallycopyprogramswithoutpayingforthemisgreatlyexaggerated.Mostoftheillegalcopyingisdonebypeoplewithnoseriousinterestintheprograms.Thus,thelosstotheindustryismuchsmallerthanestimatedbecause______

（A）manyuserswhoillegallycopyprogramsneverfindanyuseforthem

（B）mostoftheillegallycopiedprogramswouldnotbepurchasedevenifpurchasingthemweretheonlywaytoobtainthem

（C）evenifthecomputerindustryreceivedalltherevenueitclaimstobelosing,itwouldstillbeexperiencingfinancialdifficulties

（D）thetotalmarketvalueofallillegalcopiesislowincomparisontothetotalrevenueofthecomputerindustry

（E）thenumberofprogramsthatarefrequentlycopiedillegallyislowincomparisontothenumberofprogramsavailableforsale

10.ThisyeartheNewHampshireDivisionofCompanyXsetanewrecordforannualsalesbythatdivision.ThisrecordisespeciallysurprisingsincetheNewHampshireDivisionhasthesmallestpotentialmarketandthelowestsalesofanyofCompanyX’sdivisions.Whichofthefollowingidentifiesaflawinthelogicalcoherenceofthestatementabove?

（A）IfoverallsalesforCompanyXweresharplyreduced,theNewHampshireDivision’snewsalesrecordisirrelevanttothecompany’sprosperity.

（B）Sincethedivisioniscompetingagainstitsownrecord,thecomparisonofitssalesrecordwiththatofotherdivisionsisirrelevant.

（C）IfthisisthefirstyearthattheNewHampshireDivisionhasbeenlastinsalesamongCompanyX’sdivisions,thenewrecordisnotsurprisingatall.

（D）IfoverallsalesforCompanyXwereg