大学英语六级仔细阅读练习题 四六级报名

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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

参考答案

61.C)。本题考查地球温度上升带来的变化。定位句提到地球温度每上升l.8华氏度(1摄氏度)，那么大西洋中强度可匹敌甚至胜过卡特里娜飓风的飓风数量会增加两倍乃至七倍"，故C)更多像卡特里娜那样或是更糟糕的飓风"为答案。

62.D)。本题考查对飓风形成的区域中海水情况的理解。定位句提到从海洋中蒸发到空气中的水分越多，那么飓风的威力就越强，然后会直扑陆地"，故D)蒸发成水蒸气，使得风暴威力增强"为答案。

63.B)。本题考查飓风卡特里娜的细节。定位句提到卡特里娜飓风在抵达新奥尔良州之前威力大增，其巨大的破坏力致使200余人丧生，并造成了800亿美元的经济损失"，故答案为B)。

64.A)。本题考查局域海面温度的变化对飓风造成的影响。根据定位句，局域海面温度的变化是飓风变化的主要原因，故答案为A)。

65.B)。由倒数第二段后一句和后一段的一句可知，全球变暖是由温室气体大量排放引起的，而全球变暖和破坏性风暴频率变高之间存在联系，由此可推知，减少温室气体排放，或可缓解全球变暖的趋势，从而减少破坏性风暴的发生频率，故答案为B)。