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1、2014高考英语阅读理解巩固练习（42）及答案TheholeintheEarth’sozonelayer(臭氧层)hasuntilnowprotectedAntarcticafromtheworsteffectsofglobalwarming.Butscientistshavewarnedthatastheholeclosesupinthenextfewdecades,temperaturesonthecontinentcouldrisebyaround3℃onaverage,withmeltingicecontributing
2、toaglobalsealevelincreaseofupto1.4metres.InthepastdecadesthewesternAntarctichasseenrapidicelossastheworldhaswarmed,buttheotherpartsofthecontinenthave,paradoxically,beencooling,resultingina10%increaseiniceintheseasaroundtheregion.Thisisbecausetheholeintheozonelayerhas
3、increasedcoldwindsinAntarctica,makingmuchofthecontinentsurfacecolderthanusual.Butnowthatthegassesthatcausetheozoneholehavebeenbanned,scientistsexpecttheholetorepairitselfwithinthenext50to60years.BythenthecoolingeffectwillhavefadedoutandtheAntarcticwillfacethefullimpa
4、ctofglobalwarming.Thismeansanincreaseinaverageairtemperaturesofaround3℃andareductioninseaicebyaroundathird.Thebiggestthreattothecontinentcomesfromwarmingseas.RobertJohnson,ascientistwhomonitorsAntarcticaicesheets,said,“TheicesheetsinAntarcticaarehundredsofmetresthick
5、.Butoncewarmoceanwatersstartflowingunderneath,theicewillbeginthinningandcouldbreakupveryquickly.”Thinningicesheetscauseicetobreakawayfromthecontinentandtomeltevenfaster.EscapingicefromwesternAntarcticahasalreadyresultedina10%riseinglobalsealevelinrecentdecades.Johnso
6、nbelievesthatinternationalactiontoreduceglobalwarmingisrequiredimmediatelyoritmaybetoolate.“Everythingisconnected—AntarcticamaybealongwayawaybutitisanimportantpartoftheEarth’ssystem，”saidJohnson.“Itcontains90%oftheworld’sice,70%oftheworld’sfreshwaterandthatisenough,i
7、fitmeltscompletely,toraisesealevelsby63metres.”-9-Eveninaworse-casesituationscientistsdon’texpecttheicetoentirelydisappear,butpredictthat,becauseofthemeltingicesheets,averagesealevelrisewillbearound1.4metreshigherbytheendofthecentury.1.Theunderlinedword“paradoxically
8、”(inParagraph2)mostprobablymeans“________.”A.rapidlyB.approximatelyC.contradictorilyD.apparently【最佳选项】 C2.Whatistheeffectoftheholei
