manhattan CR 根据分类另外摘出的题.docx
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manhattan CR 根据分类另外摘出的题.docx
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manhattanCR根据分类另外摘出的题
Drawaconclusion
2.AntarcticMeteorite陨星
AdetailedlabanalysisofameteoriterecentlydiscoveredinAntarcticarevealedthat
themeteoritehasgeologicalcharacteristicscommontotheplanetMars.Todate,scientists
havenotfoundthesecharacteristicsanywhereotherthanonMars.Usinga
techniquecalled"acid-etching,"scientistsfoundthatthemeteoritecontainedfossilized
remainsofsingle-celllifeforms.
Thestatementsabove,iftrue,bestsupportwhichofthefollowingasaconclusion?
(A)ThefossilizedremainsindicatethatlifeexistsonMars.
(B)Thescientistshaveevidencetosupportahypothesisthatthemeteoritecame
fromMars.
(C)Themeteoriterepresentsasubstantialstepforwardinhumanknowledgeofthe
developmentoflifeinthesolarsystem.
(D)UndiscoveredmeteoritescurrentlyexistinAntarctica.
(E)"Acid-etching"isnecessarytoconfirmtheexistenceoffossilizedremainsin
meteorites.
Thisargumentstatesthatthefossilizedremainsofsinglecelllifeformswerefoundin-ameteorite
withgeologicalcharacteristicsuniquetoMars.Weshouldseektoeliminateanswerchoicesthatgo
beyondthepremisesoraretooextreme.
(A)ThisanswerchoiceconcludestoomuchbysayingthatthereispresentlylifeonMars.This
answeristooextremetobesupportedbytheargument.Forexample,itispossiblethatthefossils
representaformoflifethathassincediedoutonMars.
(B)CORRECT.ThepassagestatesthatthemeteoriteshavegeologicalcharacteristicscurrentlyonlyknowntoexistontheplanetMars.
(C)Thereisnoindicationthatthemeteoritehasrevealedanynewinformationaboutthedevelopmentoflifeinthesolarsystem.Itispossiblethatscientistshadearlieridentifiedfossilized
remainsfromMarsorothersources.
(D)Thischoiceisbeyondthescopeoftheargument.Whileitisreasonabletoassumethatthere
maybemoreundiscoveredmeteoritesinAntarctica,suchanassumptiondoesnothaveto
followfromtheinformationpresented.
(E)Theargumentsratesthatscientistsusedatechniquecalled"acid-etching"tofindthatthe
meteoritecontainedthefossilizedremainsofsingle-cellorganisms.However,itispossible
thatthereareothertechniquesthatcouldalsodeterminetheexistenceoffossilizedremains.
ZStemCellResearch
Governmentrestrictionshaveseverelylimitedtheamountofstemcellresearch
Americancompaniescanconduct.Becauseoftheserestrictions,manyAmericanscientists
whospecializeinthefieldofstemcellresearchhavesignedlongtermcontracts
toworkforforeigncompanies.Recently,Congresshasproposedliftingall
restrictionsonstemcellresearch.
Whichofthefollowingstatementscanmostproperlybeinferredfromtheinformation
above?
(A)Someforeigncompaniesthatconductstemcellresearchworkunderfewer
restrictionsthansomeAmericancompaniesdo.
(B)BecauseAmericanscientistsareunderlong-termcontractstoforeigncompanies,
therewillbeasignificantinfluxofforeignprofessionalsintotheUnitedStates.
(C)InaUpartsoftheworld,stemcellresearchisdependentonthefinancialbacking
oflocalgovernment.
(D)Inthenearfuture,Americancompanieswillnolongerbeattheforefrontof
stemcellresearch.
(E)IfrestrictionsOnstemcellresearcharelifted,manyoftheAmericanscientists
willbreaktheircontracttoreturntoAmericancompanies.
Inthisargument,acause-and-effectrelationshipispresentedbetweenAmericanscientistssigning
long-termcontractswithforeigncompaniesandtheu.s.government'srestrictionsonstemcell
research.Thiscause-and-effectrelationshipisthekeytothecorrectanswer.
(A)CORRECT.IfAmericanscientistssignedcontractswithforeigncompaniesspecificallybecauseofu.s.restrictions,wecaninferthatthenewcompaniestheysignedwithoperateunderfewerrestrictions.Therefore,atleastsomeforeigncompaniesmustworkunderfewerrestrictionsthansomeAmericancompaniesdo.
(B)WhileitispossiblethatoncetherestrictionsarebannedAmericancompanieswillwanttohire
morescientistsandwillseekthemoverseas,therearetoomanyunknownstodrawthisconclusionusingthegivenpremises.
(C)Thispassageisaboutgovernmentrestrictions;wearegivennoinformationaboutfinancial
backing.
(0)WearenotgivenanyinformationregardingAmerica'scurrentorfuturepositionintermsof
stemcellresearch.Thoughgovernmentrestrictionsandscientistsswitchingcompaniescouldbe
issuesrelatedtoacompany'sprosperity,wearegivennoinformationabouthowthesedirectly
affectAmerica'sposition.
(E)Thoughthismighthappen,wecannotconcludeforcertainthatitwillhappen.
9.MutualFunds
Manymanagersofmutualfundsproclaimthattheyhavebeenabletogenerateconsistently
higherratesofreturnontheirinvestmentsthanthegeneralstockmarketbybuyingshares
ofundervaluedcompanies.Classicaleconomictheory,however,proposesthe"efficientcapital
marketshypothesis,"whichindicatesthatstockpricesaccuratelyreflectthevalueofthe
underlyinginvestments,incorporatingallinformationavailabletothepublic.Iftheefficient
capitalmarketshypothesisiscorrect,thenitshouldbeexpectedthat_
(A)mutualfundmanagers,inordertocompetewitheachother,willbidupthepricesof
certainstocksbeyondtheirtruevalues
(B)mutualfundmanagersuseinsiderinformation,anillegalpractice,togeneratehigher
ratesofreturnthanthegeneralstockmarket
不是基于theory正确的基础上且涉及了全部的mutualfundmanagers.
(C)stockpriceswillriseovertime
(D)givenpublicinformationalone,companiescannotreliablybelabeledundervaluedor
overvaluedrelativetothegeneralstockmarket是基于theory正确的基础上的.
(E)somemutualfundmanagersarebetterthanothersatgeneratingahigherrateofreturn
oninvestments不是基于theory正确的基础上.
Thisargumentfirstdescribestheclaimsofmanymutualfundmanagersthattheyhavebeenabletogenerateconsistentlyhigherratesofreturnthanthegeneralstockmarket.Theargumentalso
describesanddefinesthe"efficientcapitalmarketshypothesis"astheprinciplethatstockprices
accuratelyreflectingallpubliclyavailableinformation.Thequestionthenasksforaconclusionthatdependsonthepremisethattheefficientcapitalmarketshypothesisiscorrect.
(A)WhilethedescribedeventcouldOccur,itwouldnotbeexpectedtooccurasaconsequenceof
theefficientcapitalmarketshypothesis.Theefficientcapitalmarketshypothesispositsthatstock
pricesaccuratelyreflectthevalueoftheunderlyinginvestments.Biddingupthepricedoesnot
equatetoanaccurately-pricedstock.
(B)Thoughitispossiblethatsomemutualfundmanagershaveengagedininsidertrading,wedo
nothavetoconcludethatmutualfundmanagersmustdothisasaconsequenceoftheefficientcapitalmarketstheoryinordertogenerateahighrateofreturn.
(C)Thepremisesdonotindicatethatstockpriceswillriseovertime.Stockpriceswillonlyrise
accordingtotheefficientcapitalmarketshypothesisifthevalueoftheunderlyinginvestmentsalsorisesovertime.
(D)CORRECT.Iftheefficientcapitalmarketshypothesisiscorrect,andstockpricesaccuratelyreflectthevalueoftheunderlyinginvestments,incorporatingpublicinformation,thenifonlypublicinformationisavailable,companieswouldnotbeeitherundervaluedorovervalued;instead,theywouldbevaluedappropriately.
(E)Whileitisprobablytrueintherealworldthatsomemutualfundmanagersaremoresuccessfulthanothers,itdoesnotfollowfromtheefficientcapitalmarketshypothesis.
Strengthenaconclusion
Apremisethatstrengthenstheconclusionshoulddoatleastoneofthefollowing:
(1)Fixaweaknessoftheconclusion,OR
(2)Validateanassumptionmadebytheargument,OR
(3)Introduceadditionalsupportingevidence.
Apremisecanstrengthenorsupportaconclusionwithoutbeingnecessaryforthatconclusion.
ThecorrectanswerchoiceforaStrengthenquestionwilltypicallyfunctionasanewpremise.
3.AirlineConnection
JohnwasflyingfromSanFranciscotoNewYorkwithaconnectingflightinChicagoonthesameairline.Chicago'sairportisoneofthelargestintheworld,consistingofseveralsmallstand-aloneterminalsconnectedbytrams,John'splanearrivedontime.Johnwaspositivehewouldmakehisconnectingflightthirtyminuteslater,because_
Whichofthefollowingmostlogicallycompletestheargumentabove?
(A)John'sairlineisknownforalwaysbeingontime
(B)anumberofotherpassengersonJohn'sfirstflightwerealsoscheduledtotakeJohn'sconnectingflight
(C)attheairportinChicago,airlinesalwaysflyinandoutofthesameterminal
(D)JohnknewtherewasanotherflighttoNewYorkscheduledforonehouraftertheconnectingflighthewasscheduledtotake
(E)theairlinegenerallyclosesthedoorsofaparticularflighttenminutesbeforeitisscheduledtotakeoff.ThisargumentaddressesJohn'sconcernaboutmakingaconnectingflight.
Theairportwiththeconnectingflightisverylarge,consistingofseveralsmallstand-aloneterminals.ThecorrectanswerchoicewillsupportJohninconcludingthathecanlikelymakehisconnectingflightthirtyminuteslaterdespitethesizeoftheairport.
(A)Irrelevant.ThisisageneralobservationaboutthetimelinessofJohn'sairline,butitdoesnot
provideanynewinformation-itisalreadyestablishedinthepremisesthlltJohn'sparticular
flightarrivedontime.Thefactthathisconnectingflightwilllikelydepartontimemayeven
weakentheargument.
(B)Irrelevant.Airlineshavebeenknowntodelayflightsinordertoensurethatalargenumberof
passengerscanmaketheconnection,butweshouldnothavet
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