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人教版英语选修6第四单元Reading市公开课一等奖省赛课获奖PPT课件.pptx

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Unit4GlobalwarmingFromthefollowingpictures,youwillknowwhereallthisenergycomesfrom.anoilrefinerysolarpanelsSamplelistsRenewableornon-renewable?Renewableornon-renewable?Whatistoldinthepicture?Whatisthegreenhousemadeandusedfor?Agreenhouseismadeofglassandisusedforgrowingplants,especiallyduringcoldweather.Howdoesitwork? Theairinsideiswarmbecausetheglasstrapstheheatfromthesunandkeepsitfromescaping.Thismakesthegreenhouseheatupandsothe plantscangrow throughoutthe coldperiod.Whatarethe“greenhousegases”? Intheatmospheresurroundingtheearththerearegasescalled“greenhousegases”,includingcarbondioxide,methane(甲烷,沼气)andwatervapor.Whatdoyouthinkgreenhouse gasesdo? Theytraptheheatofthesunandkeeptheairsurroundingtheearthwarm.MainideasofeachpartMainideasofeachpartReadthetextcarefullyandfillin theblanks.ScientistsScientistsII.Choosethebestanswer. 1.Thefirstgraphinthetextisusedto________. attractreaders’attention B.introducethetopicofglobalwarming C.actasanexample D.supporttheopinionandmakeitmoreconvincing2.Theauthorprobablyagreesthat________. globalwarmingisgoodforus B.wecandonothingaboutglobalwarming C.catastropheswillhappeniftheglobekeepsonwarming D.muchremainstobefoundoutabouttheeffectsofglobalwarmingAnswerthequestions. Whowrotethemagazinearticle? Whatisthenameofthemagazine? SophieArmstrongwrotethemagazinearticle.ThenameofthemagazineisEarthCare.2.Whatarethenamesofthethreescientistsmentionedinthearticle? TheyareDr.JaniceFoster, CharlesKeelingandGeorge Hambley.3.Whatdotheythinkaboutglobal warming?Dotheyagreewithone another? Therearesomeverydifferentattitudesamongscientiststowardsthisissue.Somethinktheeffectswillbeterrible,whilesomeothersbelievethatweshouldnotworryaboutit.GraphIshowsthetemperatureincreaseofonedegreeFahrenheitbetween1860to.Graph2showsthecarbondioxidecontent intheatmospherefrom1957to1997.5.Whatisthemaintopicofthe article? Globalwarming/thewarmingof theearth.Thetemperatureinthelastcenturydidnotseemtoincreasemuch. Everyonebelievesthatglobalwarmingiscausedbytheact