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人教版选修六Unit4GlobalWarming
Unit4Globalwarming
Doyouknowtheseenergyresources?Arethey“renewable”or“non-renewable”?
solarpanelshydro-electricdamrenewable
naturalgasnuclearenergynon-renewable
coaloilnon-renewable
renewablewindsolarengerywater
Whatisthegreenhousemadeandusedfor?
Agreenhouseismadeofglassandisusedforgrowingplants,especiallyduringcoldweather.
Howdoesitwork?Theairinsideiswarmbecausetheglasstrapstheheatfromthesunandkeepsitfromescaping.Thismakesthegreenhouseheatupandsotheplantscangrowthroughoutthecoldperiod.
Whatarethe“greenhousegases”?Intheatmospheresurroundingtheearththerearegasescalled“greenhousegases”,includingcarbondioxide,methane(甲烷,沼气)andwatervapor.
Whatdoyouthinkgreenhousegasesdo?Theytraptheheatofthesunandkeeptheairsurroundingtheearthwarm.
MainideasofeachpartWritingtechniques(Paragraph1)Introduceadebateovertheissueofglobalwarming.Raisingaquestion
MainideasofeachpartWritingtechniques(Paragraphs23)Illustratehowglobalwarmingcomesabout.Givingexamples,usinggraphs,explanation.
(Paragraphs45)Listtwodifferentattitudesamongscientiststowardsglobalwarming.Givingexamples,makingcontrast.
(Paragraph6)It’suptoreaderstothinkanddecidewhetherpeopleshoulddosomethingaboutglobalwarmingornot.Usingaquestion,leavingreaderstothinkovertheissue.
Readthetextcarefullyandfillintheblanks.ScientistsOpinionJaniceFoster◆Weneed______likecarbondioxide,methaneandwatervapour,butifweaddhuge___________extracarbondioxidetotheatmospherebyburningfossilfuels,itwillcausethe________________togoup.gasesquantitiesofglobaltemperature
ScientistsOpinionJaniceFoster◆Overthenext100yearstheamountofwarmingcouldbeaslowas1to1.5degreesCelsius,butitcouldbeashighas5degreesCelsius.◆Anincr
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