gre试题(二)-ag真人试玩平台

section2

time--30minutes

25questions

question1--7

inagame,exactlysixinvertedcupsstandsidebysideinastraightline,andeachhasexactlyoneballhiddenunderit.thecupsarenumberedconsecutively1through6.eachoftheballsispaintedasinglesolidcolor.thecolorsoftheballsaregreen,magenta,orange,purple,red,andyellow.theballshavebeenhiddenynderthecupsinamannerthatconformstothefolowingconditions:

the purpleball must be hidden under alower-numberedcup than the orangeball.there dball must be hidden under acupim media tely to the cupunder

which the magentaball is hidden.the greenball must be hiddenunder cup5.

1.which of the following could be color of the ball sunder the cups,in or der from 1 through 6?

(a)green,yellow,magenta,red,purple,orange
(b)magenta,green,purple,red,orange,yellow
(c)magenta,red,purple,yellow,green,orange
(d)red,purple,magenta,yellow,green,orange
(e)red,purple,magenta,yellow,green,orange

2.if the magentaball is under cup 4,the redball must be under cup

(a)1(b)2(c)3(d)4(e)5

3.a ball of which off ollowing colors could be under cup 6?

(a)green(b)magenta(c)purple(d)red(e)yellow

4.if the purple ball is under cup 4,the orange ball must be under cup

(a)1(b)2(c)3(d)5(e)6

5.which of the following must be true?

(a)the green ball is under alower-numbered cup than the green ball.
(b)the orange ball is under alower-numbered cup than thegreen ball.
(c)the purple ball is under alower-numbered cup than thegreen ball.
(d)the purple ball is under alower-numbered cup than thered ball.
(e)the red ball is under alower-numbered cup than the yellow ball.

6.if the orange ball is under cup 2,balls of which of the following colors could be under cup simmediately to each other?

(a)greenandmagenta(b)greenandpurple(c)orangeandyellow(d)purpleandred(e)redandyellow

7.ifthemagentaballisundercup1,ballsofwhichofthefollowingcolorsmustbeundercupsimmediatelytoeachother?

(a)greenandorange(b)greenandyellow(c)purpleandred(d)purpleand

yellow(e)redandyellow

8.thecompanyshouldnotbeheldresponsibleforfailingtocorrectthecontrol-panelproblemthatcausedtheaccident.althoughtheproblemhadbeenmentionedearlierinasafetyinspector'sreport,companiesreceivehundredsofreportsofsuchproblem,andindustrystandardno.42requiresactiononthoseproblemonlywhenanaccidentisforeseeable.

ifthesecondsentenceintheparagraphaboveisfactuallycorrect,theanswertowhichofthefollowingquestionsismostrelevantinhelpingtodeterminewhetherornotthecompanyviolatedindustrystandardno.42whenitfailedtocorrectthecontrol-panelproblem?

(a)wastheaccidentserious?(b)wasthecontrol-panelproblemofatypethatisknowntoincidentthatanaccidentislikely?(c)sincetheaccident,hasthecompanydoneaspecialsafetycheckonallcontrolpanels?(d)didthesafetyinspectormentionmorethanoneprobleminthesamereport?(e)howlongwasthecontrolpanelinusebeforetheproblemwasdiscovered?

9.riothamus,afifth-centurykingofthebritons,wasbetrayedbyanassociate,foughtbravelyagainstthegothsbutwasdefeated,anddisappearedmysteriously.

riothamus,matchalmostexactlythoseattributedtokingarthur.therefore,riothamusmustbethehistoricalmodelforthelegendarykingarthur.

theargumentaboverequiresatleastoneadditionalpremise.whichofthefollowingcouldbesucharequiredpremise?

(a)modernhistorianshavedocumentedtheactivitiesofriothamusbetterthanthoseofanyotherfifth-centuryking.(b)thestoriestoldaboutkingarthurarenotstrictlyfictitiousbutarebasedonahistoricalpersonandhistoricalevents.(c)riothamus'associatesweretheauthorsoftheoriginallegendsaboutkingarthur.(d)legentsaboutthefifthcenturyusuallyembellishandromanticizetheactualconditionsofthelivesoffifth-centurynobility.(e)posterityusuallyrememberslegendsbetterthanitrememberstheactualhistoricaleventsonwhichtheyarebased.

10.aworldwidebanontheproductionofcertainozone-destroyingchemicalswouldprovideonlyanillusionofprotection.quantitiesofsuchchemicals,alreadyproduced,existascoolantsinmillionsofrefrigerators.whenth

eyreachtheozonelayerintheatmosphere,theiractioncannotbehalted.sothereisnowaytopreventthesechemicalsfromdamagingtheozonelayerfurther.

whichofthefollowing,iftrue,mostseriouslyweakenstheargumentabove?

(a)itisimpossibletomeasurewithaccuracythequantityofozone-destroyingchemicalsthatexistascoolantsinrefrigerators.(b)inmodernsocieties,refrigerationoffoodisnecessarytopreventunhealthyandpotentiallylife-threateningconditions.(c)replacementchemicalsthatwillnotdestroyozonehavenotyetbeendevelopedandwouldbemoreexpensivethanthechemicalsnowusedascoolantsinrefrigerators.(d)evenifpeopleshouldgiveuptheuseofrefrigeration,thecoolantsalreadyinexistingrefrigeratorsareathreattoatmosphericozone.(e)thecoolantsinrefrigeratorcanbefullyrecoveredattheendoftheusefullifeoftherefrigeratorsandreused.

question11--15

agovernmentisassigningeachofsixembassyofficeworkers--farr,golden,hayakawa,inserra,jones,andkovacs--toembassies.therearefourembassies.embassieslandmarelocatedincountrieswithdryclimates,whereasembassiespandtarelocatedincountrieswithhumidclimates.theofficeworkersmustbeassignedaccordingtothefollowingrules:

eachembassymusthaveatleastoneoftheworkersassignedtoit.atleastoneembassyinahumidclimatemusthaveatleasttwoworkersassigned

toit.goldencannotbeassignedtothesameembassyaskovacs.inserramustbeassignedtanembassyinadryclimates.jonesmustbeassignedtoanembassyinahumidclimate.11.whichofthefollowingisanacceptableassignmentoftheworkerstotheembassies?

lmpt(a)farr,goldeninserra,kovacshayakawajones(b)golden,kovacsinserrajonesfarr,hayakawa(c)goldenfarr,inserrakovacsjones,hayakawa(d)jonesgolden,inserrahayakawafarr,kovacs(e)kovacsfarr,hayakawainserragolden,jones

12.whichofthefollowingmustbeassignedeithertoembassylortoembassym?

(a)farr(b)golden(c)hayakawa(d)inserra(e)kovacs

13.whichofthefollowingcannotbetrue?

(a)oneworkerisassignedtol.(b)twoworkersisassignedtop.(c)twoworkersareassignedtol.(d)threeworkersareassignedtom.(e)threeworkersareassignedtot.

14.ifgoldenandkovacsareassignedtolandm,respectively,whichofthefollowingmustbetrue?

(a)farrisassignedtoeitherport.(b)inserraisassignedtoeitherport.(c)pandteachhavetwoworkersassignedtothem.(d)hayakawaisassignedtol.(e)hayakawaisassignedtot.

15.ifgolden,hayakawa,andkovacsareamongtheworkersassignedtoembassiesinhumidclimayes,whichofthefollowingmustbetrue?

(a)farrisassignedtoanembassytowhichnoneoftheotherfiveofficeworkersisassigned.(b)goldenisassignedtoanembassytowhichnoneoftheotherfiveofficeworkersisassigned.(c)jonesisassignedtothesameembassyasgolden.(d)hayakawaisassignedtothesameembassyasgolden.(e)hayakawaisassignedtothesameembassyaskovacs.

question16--19

avolunteerusesatrucktopickupdonationsofunsoldfoodandclothingfromstoresandtodeliverthemtolocationswheretheycanbedistributed.hedrivesonlyalongacertainnetworkofroads.

inthenetworktherearetwo-wayroadsconnectingeachofthefollowingpairsofpoints:1with2,1with3,1with5,2with6,3with7,5with6,and6with7.therearealsoone-wayroadsgoingfrom2to4,from3to2,andfrom4to3.therearenootherroadsinthenetwork,andtheroadsinthenetworkdonotintersect.

tomakeatripinvolvingpickupsanddeliverirs,thevolunteeralwaystakesaroutethatforthewholetrippassesthroughthefewestofthepoints1through7,countingapointtwiceifthevolunteerpassesthroughittwice.

thevolunteer'shomeisatpoint3.donationscanbepickedupatasupermarketatpoint1,aclothingstoreatpoint5,andabakeryatpoint4.deliveriescanbemadeasneededtoatutoringcenteratpoint2,adistributioncenteratpoint6,andashelteratpoint7.

16.ifthevolunteerstartsatthesupermarketandnextistogototheshelter,thefirstintermediatepointhisrputepassesthroughmustbe

(a)2(b)3(c)5(d)6(e)7

17.if,startingfromhome,thevolunteernextistomakepickupsfortheshelteratthesupermarketandthebakery(ineitherorder),thefirsttwointermediatepointsonhisroute,beginningwiththefirst,mustbe
(a)1and2(b)1and3(c)2and1(d)2and4(e)4and2

18.if,startingfromtheclothingstore,thevolunteernextistopickupbreadateitherthesupermarketorthebakery(whicheverstopmakeshisroutegothroughthefewestofthepoints)andthenistogototheshelter,thefirsttwopointshereachesaftertheclothingstore,beginningwiththefirst,mustbe

(a)1and2(b)1and3(c)4and2(d)6and2(e)6and4

19.ifthevolunteeristomakeatripstartingattheshelter,nextgoingtothebakeryforapickup,andthenendingatthedistributioncenter,thefirsttwointermediatepointsonhisroute,beginningwiththefirst,canbe

(a)3and1(b)3and4(c)4and2(d)6and2(e)6and5

question20--22

adeveloperisplanningtobuildahousingcomplexonanemptytractofland.exactlysevendifferentstylesofhouses--q,r,s,t,w,x,andz--willbebuildinthecomplex.thecomplexwillcontainseveralblocks,andthedeveloperplanstoputhousesofatleastthreedifferentstylesoneachblock.thedeveloperwillbuildthecomplexaccordingtothefollowingrules:

anyblockthathasstylezonitmustalsohavestylewonit.

anyblocktoonethathasonitbothstylesandstylexmusthaveonit

styletandstylez.

noblocktoonethathasonitbothstylerandstylezcanhaveonit

eitherstyletorstylew.

noblockcanhaveonitbothstylesandstyleq.

20.whichofthefollowingcanbethecompleteselectionofhousestyleonablock?

(a)q,r,s(b)q,s,x(c)r,t,z(d)s,w,z(e)t,x,z

21.whichofthefollowingcanbethecompleteselectionofhousestyleonablock?

(a)q(b)r(c)s(d)w(e)x

22.whichofthefollowingcanbethecompleteselectionofhousestyleforablockthatistoexactlyoneblock,ifthatoneblockhasonitstyles,t,w,andxonly?

(a)s,t,andx(b)t,x,andz(c)r,s,x,andz(d)s,t,w,andx(e)t,w,x,andz

23.whenanosprey(afish-eatinghawk)returnafromfishingtoitsnestingareawithafishlikeanalewife,apollack,orasmelt,otherospreyswillretraceitsflightpathinhopesofgoodfishing.thereisseldomsucharesponseifthefirstbirdbringsbackawinterflounder.yetos

preysfeedonwinterflounderjustasreadyasodanyotherfish.

whichofthefollowing,iftrue,contributesmosttoanexplanationofthefishingbehaviorofospreysasitisdescribedabove?

(a)ospreysareseldomabletocatchalewives,pollack,orsmelt.(b)alewives,pollack,andsmaltmoveinschools,butwinterflounderdonot.(c)winterflounderprefershallowerwatersthandoalewives,pollack,orsmelt.(d)winterflounderpreferandpollackexhibitprotectivecoloration,butalewivesandsmeltdonot.(e)ospreysthatliveinnestingareaareespeciallysuccessfulfishers.

24.arecentstudyofaninsurancecompany'sunderwritersindicatethatthosewhoworkedinpleasantphysicalsurroundingswere25percentmoreproductivethantheirpeersinunpleasantphysicalsurroundings.objectivecriteriaforevaluatingjobperformanceincludedcaseloadandcomplexityofcases.thisshowsthatimprovingworkers'enviromentsincreasesthoseworkers'productivity.

whichofthefollowing,iftrue,mostseriouslyweakenstheconclusionabove?

(a)onaverage,less-productiveemployeesspendnofewerhoursperdayat

theirworkstationsthandotheirmore-productivepeers.(b)unpleasantsurroundingsgiveemployeeslessmotivationtoworkhardthan

morepleasantsurroundingsdo.(c)themore-productiveemployeesaregenerallyrewardedwithpleasantoffice

space.(d)more-productiveemployeesdonotworkanymorehoursthantheir

less-productivepeers.(e)peerpressurediscouragesemployeesincrowed,unpleasantsurroundings

frommakingphonecallstotheirownfamilymembersduringworktime.

25.inacertaincountry,individualtendtochangetheirpoliticalaffiliationreadilyfromonepoliticalpartytoanother.inthepasttheunionpartygrewlargerbecauseofthistendency,butalthoughmostofthosewhochangetoanewpartyaffiliationchangetotheunionparty,theunionpartyhasremainedaboutthesamesizeinrecentyears.

whichofthefollowing,iftrue,besthelpstoexplainthechangeinthegrowthpatternoftheunionpartymentionedabove?

(a)theeconomyhasbeenprosperingrecently,andmanyofthosewhochange
<>partyaffiliationareupwardlymobileandproperous.(b)inrecentyeasthosewhowerepreviouslynonaffiliatedhavetendedtojoin

theunionpartyiftheyjoinedanypartyatall.(c)thepercentageofvoting-agecitizenswhochangepoliticalpartyaffiliation

eachyearhasremainedconstant,andthenumberofvoting-agecitizens

hasremainedthesame.(d)thepercentageofvoting-agecitizenswhoareaffiliatedwithanypolitical

partyhasincreasedoverthelasttenyears.(e)manymembersoftheunipnpartyhaveabandonedallpoliticalparty

affiliationinrecentyears.

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