选修六book6unit4reading the earth is becoming warmer-

Book6Unit4GlobalwarmingLookatthepictureandwhatcanyouknowfromit？234Whatpeoplearedoing1lightthingsthatuseenergyinyourhomemicro-waveoventelevisionhairdryervideoplayerfridgecomputerwashingmachinestoveDoyouknowhowenergyisproduced?Howmanysourcesofenergycanyoulist?Windenergyisusedaspowertoproduceelectricity.windmillsElectricityisproducedbyburningcoals.coalpowerstationsOilisrefinedandmadepure.oilrefineriesNuclearenergyisconvertedintoelectricity.nuclearpowerplantpiecesofequipmentonaroofthatcollectsenergyfromsunlightinordertoheatwaterandproduceelectricitysolarpanelsWaterarekeptbackandraiseditslevelforirrigationorforproducingelectricity.hydro-electricdamsgeothermal(地热的)energyplantElectricityisgeneratedfromhotdryrocks.Whichsourceiscleanerorhealthier?Whichsourceis“renewable”?Thinking:Coaloilwindsunnuclearwaterundergroundheat√√√√√√√√non-renewablerenewableCarbondioxidecoaloilnaturalgasglobalwarming●●●●●●Why?FossilFuels1.Doyouknowwhatitis?AgreenhouseWhatisitusedfor?Pre-reading:Agreenhouseismadeof______andisusedfor______________,especiallyduring_____weather.growingplantsglasscold2.Howdoesthegreenhousework?Theairinsidewaswarmbecausetheglasstraps(挡住,吸收)theheatfromthesunandkeepsitfromescaping(逃跑).Thismakesthegreenhouseheatup(热量上升)andsotheplantscangrowthroughout(在…期间)thecoldperiod.3.WhatareGreenhousegases?Intheatmospheresurroundingtheearththerearegases,whicharecalled“greenhousegases”,mainlyincluding____________,andwatervapor(水蒸气).carbondioxide4.GreenhouseEffectGlobalwarmingGreenhousegasestrappedtheheatfromthesun,whichcausesthetemperatureofearthgoesup.TheEarthisBecomingWarmer--ButDoesItMatter?ReadingSkimming（略读）Skimthetitle:THEEARTHISBECOMINGWARMER–BUTDOESITMATTER?1.Whatisthemaintopic?A.Theearth.B.Globalwarming.C.Becomingwarmerdoesn’tmatter.Skimming2.Thisarticleisfrom________.A.Anenvironmentalmagazine.B.AdiaryC.AnovelD.Astory3.Whowrotethearticle?SophieArmstrong4.Whatisthenameofthemagazine?EarthCarePart1Part2Part3C.Introductionofglobalwarming(1)(2-5)(6)A.HowglobalwarmingcomesaboutB.ListtwodifferentattitudestowardsglobalwarmingPart4(7)D.WhetherpeopleshoulddosomethingaboutglobalwarmingWhowritesthisarticle?SophieArmstrongofEarthCareWhathappenedduring20thcentury?ThetemperatureoftheearthroseaboutonedegreeCarefulreadingPart1(1)Introductionofglobalwarming.2.___________________________1.___________________Part2(2-5)Howglobalwarmingcomesabout?theburningoffossilfuelshumanactivityCarbondioxideMethaneWhatarethegreenhousegases?1.2.3.Watervapor3.Whatarethetwographsabout?Graph1showsthetemperatureincreaseofonedegreeFahrenheitbetween1860to2000.Graph2showsthecarbondioxidecontentintheatmospherefrom1957to1997.Graph1:Graph2:Whatarethedifferentattitudestowardsglobalwarming?Part36Part3(6-7)Dr.JaniceFosterGeorgeHambleypessimisticoptimisticPart3(6-7)ariseintheseelevelseverestormsdroughtsFloodsDroughtsFaminesSpreadofdiseasesDisappearanceofspeciesoptimisticItisa_______thing,whichmakesplantsgrow______;cropswillproduce_____;itwillencourageagreaterrangeof_______－allofwhichwillmakelife______.positivequickermoreanimalsbetterDr.JaniceFosterGeorgeHambleyPart3(6-7)Dotheydrawaconclusionatlast?NoStep4DiscussionNooneknowstheeffectsofglobalwarming.Doesthatmeanweshoulddonothing?Nowlet’slistentoasongandthengiveyouropinions.在你心中有个地方，我知道那里充满了爱。这个地方会比明天更灿烂。如果你真的努力过，你会发觉不必哭泣。在这个地方，你感觉不到伤痛或烦忧。到那个地方的方法很多，如果你真心关怀生者，营造一些空间。创造一个更美好的地方...拯救这世界，让它变得更好，为你、为我，为了全人类。Discussion（讨论）ABA:Weshalldosomethingaboutglobalwarming.B:Weshalldonothingaboutglobalwarming.Let'slivealow-carbonlife！①Turnelectricalappliancesoffwhennotusingthem.②Putonmoreclothes,don’tturnuptheheat.③Walkorrideabike,don’tdrive.④Recyclecans,bottles,plasticbagsandnewspapers.⑤Buythingsmadefromrecycledmaterials.⑥Buyproductsthatuselessenergy.⑦Planttrees.⑧Talkwithfamilyandfriendsaboutglobalwarming.Homework1.Readthepassageagainandrecitethenewwordsandexpressions.2.Previewthelanguagepoints.