新人教选修6_Unit4_Global_warming-Reading[阅读课件]

高二英语选修6Unit4GlobalWarmingReadingTHEEARTHISBECOMINGWARMER-BUTDOESITMATTER?Wedependonenergytodomanythingsinourdailylives.Forexample,energylightsourcitiesandheatsourbuildings.Makealistofthingsthatuseenergyinyourhome,inyourschool,oranyotherplacesyoucanthinkof.thingsthatuseenergyinourlifeheatinghairdryerfridgetelevisionthingsthatuseenergyinourlifewashingmachineelectromagneticovenelectricfanDoyouknowhowenergyisproduced?Howmanysourcesofenergycanyoulist?Windenergyisusedaspowertoproduceelectricity.windmillsElectricityisproducedbyburningcoals.coalpowerstationsOilisrefinedandmadepure.oilrefineriesNuclearenergyisconvertedintoelectricity.nuclearpowerplantpiecesofequipmentonaroofthatcollectsenergyfromsunlightinordertoheatwaterandproduceelectricitysolarpanelsWaterarekeptbackandraiseditslevelforirrigationorforproducingelectricity.hydro-electricdamsgeothermal(地热的)energyplantElectricityisgeneratedfromhotdryrocks.Aretheyrenewableornon-renewable?windenergyrenewablesolarenergyrenewablehydroelectricpowerrenewablegeothermalenergyrenewabletidalenergyrenewablebiomassenergyrenewablenuclearpowerplantnon-renewableanoilrefinery(精炼厂)non-renewablecoalpowerstationnon-renewablenaturalgasnon-renewableuraniumOre(铀矿石)non-renewable①Whatarethey?②Whatarethesebuildingsmadeof?③What’stheuse?greenhouse/glassAgreenhouseisusedfor_____________,especiallyduring____weather.TurntoPre-reading1,Page25.Read&answer.growingplantscold_____theheatfromthesunkeepsitfrom_____________theairupHowdoesagreenhousework?trap…from…:keepsthinaplace存住来自…的…trapsescapingheatsIntheatmospheresurroundingtheearththerearegases,whicharecalled“greenhousegases”.methanewatervaporcarbondioxidecarbondioxideFossilFuel(矿物燃料)coaloilgasglobalwarming●●●●●●produceWhatdoyouthinkgreenhousegasesdo?Greenhousegases_____theheatofthesunandtherefore______theearth.Itisknownas__________________.Nowadaysourearthisbecoming_____________________.greenhouseeffecttrapwarmwarmerandwarmer1.Comparedtothepastfewyears,what’stheweatherlikethisyear?2.Doyouwanttocheckitout?Herearesomepicturesbasedontheactuallifescenesintheseyearsforyoutoreferto.QuestionsInaddition,youmayturntoGraph1.onPage26tofindoutthechangesofthetemperaturesfromlong-termaverage.Question:Doyouthinkthewholeworldisbecomingwarmerandwarmer?Butdoesitmatter?Thisisthetopicwearegoingtodiscussfortoday.Unit4GlobalWarmingReadingTheEarthIsBecomingWarmer–ButDoesItMatter?FastReadingGlancequicklyatthemagazinearticleandanswerthequestions.SophieArmstrongwrotethemagazinearticle.Thenameofthemagazineis“Earthcare”.2.Whatarethenamesofthethreescientistsmentionedinthearticle?TheyareDr.JaniceFoster,CharlesKeelingandGeorgeHambley.1.Whowrotethemagazinearticle?Whatisthenameofthemagazine?3.Whatdotheythinkaboutglobalwarming?Dotheyagreewithoneanother?Theydon’tagreewitheachother.Somethinktheeffectswillbeterrible,whilesomeothersbelievethatweshouldnotworryaboutit.Dr.JaniceFosterthinkstheeffectsofglobalwarmingcouldbeveryserious.GeorgeHambleythinksglobalwarmingwillbemildwithfewbadenvironmentalconsequences.4.Whatarethetwographsabout?Graph1showsthetemperatureincreaseofonedegreeFahrenheitfrom1860to2000.5.Whatisthemaintopicofthearticle?Globalwarming/Thewarmingoftheearth.Graph2isaboutthecarbondioxidecontentintheatmospherefrom1957to1997.TrueorfalseReadthearticlecarefullyandfinishPart2onPage271.Thetemperaturelastcenturydidn’tincreasemuch.()2.Everyonebelievesthatglobalwarmingiscausedbytheactivitiesofhumans.()3.JaniceFosterbelievesthatglobalwarmingiscausedbyburningfossilfuels.()4.Naturalgasisagreenhousegas.()5.Carbondioxideisabyproductofburningfossilfuels.()FFTFT6.PeopleacceptCharlesKeeling’sdatabecausehetookaccuratemeasurements.()7.Floodingcouldbeoneoftheeffectsoffutureglobalwarming.()8.GeorgeHambleybelievesscientistsarejustguessingabouttheeffectsofglobalwarming.()9.GeorgeHambleyisworriedabouttheeffectsofcarbondioxideonplantgrowth.()10.Itisclearwhattheeffectsofglobalwarmingwillbe.()TTTFFCarefulReading1.Readthetextagainandtrytogetthemainideaofthearticle.Themainideaofthepassage:Part1(Paragraphs1)Part2(Paragraphs2-4)Part3(Paragraphs5-10)IntroduceadebateovertheissueofglobalwarmingIllustratehowglobalwarmingcomesaboutListtwodifferentattitudesamongscientiststowardsglobalwarmingPart4(Pa11)It’suptoreaderstothinkanddecidewhetherpeopleshoulddosomethingaboutglobalwarmingornotQuestionsHowhastheglobalwarmingcomeabout?①Humanactivity---burningoffossilfuels.②Greenhouseeffect---greenhousegases---weneedthosegases.③WeaddhugequantitiesofextracarbondioxidetotheatmospherebyburningFossilfuels.Thecarbondioxidecontentoftheatmospherewentupfromaround315partspermilliontoaround370partspermillionfrom1957to1997(SeeGraph2onPage26)ThetwodifferentviewpointstowardstheeffectsofglobalwarmingbetweenDr.JaniceFosterandGeorgeHambleyDr.JaniceFosterGeorgeHambleyCarbondioxidehascausedtheglobaltemperatureto__________.Anincreaseoffivedegreeswouldbea____________andcouldbe______________.Morecarbondioxideisa__________thing,whichmakescrops__________andwillencourage____________________.goupcatastropheveryseriouspositiveproduceagreaterrangeofan