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选修六unit4reading市公开课一等奖省赛课微课金奖PPT课件.pptx

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Unit4GlobalWarmingLightourcitiesHeatourbuildings---2.Wheredoesallthisenergycomefrom?anoilrefinerysolarpanelsRenewablenon-renewable:Renewableornon-renewable?Renewableornon-renewable?3.Whatarefossilfuels?4.Whatisthegreenhousemadeandusedfor?12/6813/68Agreenhouseismadeofglassandisusedforgrowingplants,especiallyduringcoldweather.5.Howdoesitwork?Theairinsideiswarmbecausetheglasstrapstheheatfromthesunandkeepsitfromescaping.Thismakesthegreenhouseheatupandsotheplantscangrowthroughoutthecoldperiod.6.Whatarethe“greenhousegases”?Intheatmospheresurroundingtheearththerearegases,whicharecalled“greenhousegases”,includingcarbondioxide,methane(甲烷,沼气)andwatervapor.7.Whatdoyouthinkgreenhousegasesdo?Theytrapheatfromthesunandthereforewarmtheearth.TheEarthIsBecomingWarmer–ButDoesItMatter?Lookatthemagazinetitlequicklyandtrytofindout:howisthetextorganized?FastReadingWhowrotethemagazinearticle?Whatisthenameofthemagazine?SophieArmstrongwrotethemagazinearticle.ThenameofthemagazineisEarthCare.Whatarethenamesofthethreescientistsmentionedinthearticle?TheyareDr.JaniceFoster,CharlesKeelingandGeorgeHambley.3.Whatdotheythinkaboutglobalwarming?Dotheyagreewithoneanother?Theydon'tagreewitheachother.Dr.JaniceFosterthinkstheeffectsofglobalwarmingcouldbeveryserious.4.Whatarethetwographsabout?Whatisthemaintopicofthearticle?GlobalwarmingCarefulReadingPartone:1.Whatisthepurposeoftheparagraphthatisinbold?3.Theauthorprobablyagreesthat________A.actuallyglobalwarmingisgoodforman.B.weshoulddonothingabouttheglobalwarming.C.catastropheswillhappeniftheglobekeepsonwarming.D.alotremainstobefoundoutabouttheeffectsofglobalwarming.4."Buttherearesomeverydifferentattitudesamongscientiststowardsthisissue.”“issue"heremeansthesameastheonein___.A.Iboughtthenewstampthedayofitsissue.B.Theyaretalkingaboutoneofthekeyissuesintheelectioncampaign.C.Thegovernmentisexpectedtoissueastatementabouttheelection.D.Themagazinehas12issueseachyear.Reading1.Howhastheglobalwarmingcomeabout?2.Whataretheeffectsofglobalwarming?1.Howhastheglobalwarmin