文本内容:
haveyouheardthenewsaboutpolarbearsnoIdidnthearanything.Whathappenedtothemareporterhastakensomephotosaboutadeadpolarbearwhichdiedfromhunger.Ahthatwassad.HowcouldthishappenA:Americanresearcherssaytheiceismeltingquicklyinnorthpolesothepolarbears9homehasbeendestroyed.Thatcouldhaveabadinfluenceonpolarbears.Andscientistssaythepolarbearsareendangered.Theywilldisappearwithin75years.B:youmeanthe“globalwarming”yesyouknowwiththedevelopmentofthesocietymoreandmorecarbonoxideisbeingputintotheair.Maybeitisoneofthegreatestcausesofglobalwarmingcausingthesealeveltorise.ohpolarbearsmustbeingreatdangerwemusttakeactiontoprotectthekindofbeautifulandlovelyanimals.SoasstudentswhatcanwedotoprotectthepolarbearsA:ohwecanstartfromdailythings.Forexamplewecanplantmoretreesandwecanridebikestoschool.B:yeswhynotaskmorestudentstojoinusA:soundsgreat!。