【InrecentyearstemperaturesinthepolarareasarerisingfasterthananywhereelseonEarth.Asaresulttheiceandthesnowaremeltingatrecord-settingrates.Oneresultisthatsealevelsarerisingaroundtheworldputtinganimals】

　　InrecentyearstemperaturesinthepolarareasarerisingfasterthananywhereelseonEarth.Asaresulttheiceandthesnowaremeltingatrecord-settingrates.Oneresultisthatsealevelsarerisingaroundtheworldputtinganimalsandpeopleatrisk.

　　Asheetoficeactslikeahugemirrorreflectingthesun’senergy.Butoceanwaterwhichisdarkerthaniceabsorbsalotofit.Thiscausestheoceantowarmwhichinturnspeedsupicemeltingandwhichleadstoevenmoreopenwaters.Thecyclecontinuesuntilalltheiceisgone.

　　“Astheicemeltswaterflowsintotheoceansmakingthemlesssalty.Thatalongwithwarmerwatertemperaturescanharmthecreaturesthatliveinunderandneartheice”sayszoologistMichaelStoddard.“Cold-adaptedanimals—includingpolarbearsfoxesharesandseals—alsoneedicefortravelandsurvival.”

　　“MostspeciesoffishseaspidersandmanyotheranimalsandplantsthatliveinthewatersofAntarcticadon’tliveanywhereelse”Stoddardsays.“Manyofthemhavespecialproteinsintheirbodieskeepingthemfromfreezingtodeathandhaveotheradaptationtothecoldthathasyettobeexplored.”

　　Thereforeexpertsareurgingustoreconsiderthewaywelive.Thefuelsthatweburnincarspowerstationsandfactoriesarelargelytoblameforthecarbondioxideandothergreenhousegasesthataretrappingovermuchheatinouratmosphere.Ifwecanproducefewerofthesegaseswecanhelpsavethepolarice.“Evensmallthingswouldmakeadifferenceifeveryonedidthem.”MichaelStoddardsays“That’swhatwehavetofigureoutinthenearfuturetohelpsavethepolariceandthusprotecttheoceansandus.”

　　【小题1】Thepassageismainlywrittento_____.

　　A．introducethepresentsituationofthepolarareas B．warnpeopleagainstextremeweather C．callonpeopletoprotecttheoceansandhumans D．advertiseforvolunteerstoprotecttheenvironment 【小题2】Paragraph2mainlytellsusabout_______.A．theice’sfunctions B．ocean’squickgrowing C．thecauseofsealevelrising D．thewaysofmorewaters