gmat og 12 cr复习

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1、8.4SampleQuestionsEachofthecriticalreasoningquestionsisbasedonashortargument,asetofstatements,oraplanofaction.Foreachquestion,selectthebestanswerofthechoicesgiven.1."Lifeexpectancy"istheaverageageatdeathofthe(A)Whenwasthelasttimethatthecoastalentirelive-bornpopulation.Inthemid

2、dleofthecommunitieswerethreatenedbyanapproachingnineteenthcentury,lifeexpectancyinNorthAmericatidalwave?was40years,whereasnowitisnearly80years.(B)HowfarbelowsealevelwouldthestationsbeThus,inthosedays,peoplemusthavebeenlocated?consideredoldatanagethatwenowconsiderthe(C)Wouldthe

3、rebeenoughtimeafterreceivingprimeoflife.warningofanapproachingtidalwaveforWhichofthefollowing,iftrue,underminesthecommunitiestoevacuatesafely?argumentabove?(D)Howsoonafteratidalwavehitslandisitsafeforevacueestoreturntotheircommunities?(A)Inthemiddleofthenineteenthcentury,the(E

4、)CanthestationsbeequippedtocollectandpopulationofNorthAmericawassignificantlyrelayinformationaboutphenomenaotherthansmallerthanitistoday.tidalwavescausedbyearthquakes?(B)Mostofthegainsinlifeexpectancyinthelast150yearshavecomefromreductionsinthenumberofinfantswhodieintheirfirst

5、year3.Homeownersaged40to50aremorelikelytooflife.purchaseicecreamandaremorelikelytopurchase(C)Manyofthepeoplewholivetoanadvancedageitinlargeramountsthanaremembersofanyothertodaydosoonlybecauseofmedicaltechnologydemographicgroup.Thepopularbeliefthatteenagersthatwasunknownintheni

6、neteenthcentury.eatmoreicecreamthanadultsmust,therefore,(D)Theproportionofpeoplewhodieintheirbefalse.seventiesissignificantlysmallertodaythanistheTheargumentisflawedprimarilybecausetheauthorproportionofpeoplewhodieintheireighties.(E)Morepeopleinthemiddleofthenineteenth(A)fails

7、todistinguishbetweenpurchasingandcenturyengagedregularlyinvigorousphysicalconsumingactivitythandosotoday.(B)doesnotsupplyinformationabouthomeownersinagegroupsotherthan40to502.Scientistsproposeplacingseismicstationsonthe(C)dependsonpopularbeliefratherthanonfloorofthePacificOcea

8、ntowarnthreatenedcoastaldocumentedresearchfindingscommunities