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Questions61to65arebasedonthefollowingpassage.SmallincreasesintemperaturefoundtoaddpowertostormsintheAtlantic.HurricanesthatformintheAtlanticOceanareexpectedtogainconsiderablestrengthastheglobaltemperaturecontinuestorise,anewstudyhasfound.Usingmodelingdatafocusedontheconditionsinwhichhurricanesform,agroupofinternationalresearchersbasedatBeijingNormalUniversityfoundthatforevery1.8°F(1℃)riseoftheEarth'stemperature,thenumberofhurricanesintheAtlanticthatareasstrongorstrongerthanHurricaneKatrinawillincreasetwofoldtosevenfold.Hurricanestrengthisdirectlyrelatedtotheheatofthewaterwherethestormforms.Morewatervaporintheairfromevaporatingoceanwateraddsfueltohurricanesthatbuildstrengthandheadtowardland.

HurricaneKatrinaiswidelyconsideredthemeasureforadestructivestorm,holdingthemaximumCategory5designationforafull24hoursinlateAugust2005.ItloststrengthasitpassedovertheFloridapeninsula,butgaineddestructivepowerfightbeforecollidingwithNewOrleans,killingmorethan200peopleandcausing$80billionindamage.ThestudypointstoagradualincreaseofKatrina-likeevents.Thewarmingexperiencedoverthe20thcenturydoubledthenumberofsuchdebilitating(将人类摧垮的)storms.Buttheongoingwarmingoftheplanetintothe21stcenturycouldincreasethefrequencyoftheworstkindsofstormsby700percent,threateningcoastlinesalongtheAtlanticOceanwithmuitipleCategory5stormseveryyear.

"Ourresultssupporttheideathatchangesinregionalseasurfacetemperaturesistheprimarycauseofhurricanevariability,"saidAslakGirnstead,aresearcherwiththeCenterforIceandClimateattheUniversityofCopenhagen.Thelargeimpactofsmallsea-surfacetemperatureincreaseswasmorethanGirusteadandhiscolleagueshadanticipated.TheentirestudywaspublishedintheProceedingsoftheNationalAcademyofSciences.Globaltemperatureshavesteadilyincreased,makingthepastdecadethewarmestonrecord.Earlierthisyear,climateresearchersreportedthattheEarth'stemperatureshaverisenfasterinthelastcenturythanatanypointsincethelasticeage,11,300yearsago.Theprimarycause,acouseususofscientistshassaid,istherisingemissionsofgreenhousegaseslikecarbondioxideandmethane.

Pasthurricaneshavesupportedthestudy'sfindingthatglobaltemperatureriseislinkedtomoredestructivestorms.AccordingtotheNationalCenterforAtmosphericResearch,whilethefrequencyofstormsdoesn'tappeartohaveincreased,thepercentageofstrongoneshasrisensharplyoverthepastfewdecades.Thetrendmaybesimilarfurtherbackintime,butcomprehensivehurricanedatadoesn'texist.

61.AccordingtotheteamofinternationalresearchersbasedatBeijingNormalUniversity,theriseoftheEarth'stemperatureislikelytocauseA.thecomingoficeageC.moreKatrina-likeorworsehurricanesB.lessintensehurricanesD.moregreenhousegasesintheatmosphere

62.TheoceanwaterintheregionwherethestormformsA.isheatingthehurricanesB.evaporatesandbecomesfuelC.headstowardlandD.turnsintowatervaporthatmakeshurricanesstronger

63.WhichofthefollowingstatementisTRUEaboutHurricaneKatrina?A.Itdidnotloseitsstrengthasitmoved.B.Itclaimedover200people'slives.C.Itcaused80billiondollarslossforFloridapeninsula.D.Itlastedforfull24hours.

64.Whatresultcanregionalseasurfacetemperaturechangesproduce?A.Hurricanechanges.C.Globalwarming.B.Increasinggreenhousegasemissions.D.Destructivehurricanes.

65.ItcanbeinferredfromthepassagethatA.thereisnolinkbetweengreenhousegasemissionsanddestructivestormsB.reductionofgreenhousegasemissionsmayreducedestructivestormsC.thehigherpercentageofstrongonesroseasmorehurricanesappearedD.pastrecordsonhurricanesincludedeverythingneeded