人教版高中英语选修六UNIT 4 reading课件

Unit4GlobalWarmingenergysourcesWedependonenergytodomanythingsinourdailylives.Forexample,energylightsourcitiesandheatsourbuildings.Makealistofthingsthatuseenergyinyourhome,inyourschool,oranyotherplacesyoucanthinkof.stovelightthingsthatuseenergyinyourhomemicro-waveovencassetteplayerheatingtelevisionhairdryervideoplayerfridgecomputerwashingmachinestovethingsthatuseenergyinourlifeheatinghairdryerfridgetelevisionthingsthatuseenergyinourlifewashingmachineelectromagneticovenelectricfanDoyouknowhowenergyisproduced?Howmanysourcesofenergycanyoulist?Windenergyisusedaspowertoproduceelectricity.Windmillswhereelectricityisproducedbyburningcoals.Thecoalpowerstationsinwhichoilisrefinedandmadepure.TheOilRefineriesafacilitydesignedtoconvertnuclearenergyintoelectricity.Anuclearpowerplantontheroofofahouseonabrightsunnydayareusedtocollectsolarenergy,makingyourhousewarmorheatingyourwater.Solarpanelsareusedtokeepbackwaterandraiseitslevelforirrigationorforproducingelectricity,etc.TheHydro-electricdamsAnenergysourceis“renewable”whensuppliesofitneverrunoutand“non-renewable”whenonedaytheywillrunout.Whichenergysourcesonyourlistarerenewableandwhicharenon-renewable?DiscussionWind(windpower)Sun(solarenergy)Water(hydro-electricpower)Plantwaste植物性废物(biomassenergy生物团能量)Hotspringsorgeysers间歇泉(geothermalenergy)Thesea(tidalenergy潮汐能)RenewableAretheyrenewableornon-renewable?windenergyrenewablesolarenergyrenewablehydroelectricpowerrenewablegeothermalenergyrenewabletidalenergyrenewablebiomassenergyrenewableCoalOilNaturalgasUranium[化]铀(nuclearenergy)FossilfuelsNon-renewablenuclearpowerplantnon-renewableanoilrefinery(精炼厂)non-renewablecoalpowerstationnon-renewablenaturalgasnon-renewableuraniumOre(铀矿石)non-renewableWhatarefossilfuels?•FossilfuelsareAncientanimalandplantmaterialbelowthesurfaceoftheearthwithahighcarboncontent,suchascoal,oilandnaturalgas,whichcanbeburnttoproduceenergy.Theyarealsoknownasnon-renewableenergybecauseoncetheyarerunoutof/runout,theycannotberenewed.1.Haveyoueverseenagreenhouse?ismadeofglassusedforgrowingplants,especiallyduringcoldweather.2.Howdoesthegreenhousework?Theairinsidewaswarmbecausetheglasstraps(挡住,吸收)theheatfromthesunandkeepsitfromescaping(逃跑).Thismakesthegreenhouseheatup(热量上升)andsotheplantscangrowthroughout(在…期间)thecoldperiod.4.GreenhouseEffectGlobalwarmingGreenhousegasestrappedtheheatfromthesun,whichcausesthetemperatureofearthgoesup.TheEarthIsBecomingWarmer–ButDoesItMatter?ScanningWhatismainlydiscussedinthepassage?A.Whathascausedtheglobalwarmingandwhetheritmatters.B.Whateffectsoftheglobalwarmingwillbe.C.Howserioustheglobalwarmingcouldbe.D.Whattheglobalwarmingis.Readingtips—skimthetitleandPara1:Title:THEEARTHISBECOMINGWARMER–BUTDOESITMATTER?Para1:…howhasthiscomeaboutanddoesitmatter?Whatarethetwographsabout?Graph1showsthetemperaturedifference(温度差异)from1860to2000.Graph2showsthecarbondioxidecontent(二氧化碳含量)intheatmospherefrom1957to1997.Graph1:Graph2:1)Howmanyparagraphsdoesthereadingtextconsistof?Pleasefindoutthetopicsentenceofeachpara.Readthepassagequickly(3’)2)Makeadivisionofthetext.Fast-Reading1.thetopicsentencesofeachparagraph.Para.1Sohowhasthiscomeaboutanddoesitmatter?Para.2…thatitishumanactivitythathascausedthisglobalwarmingratherthanarandombutnaturalphenomenon.Para.3Allscientistssubscribetotheviewthattheincreaseintheearth’stemperatureisduetotheburningoffossilfuelslike….Para.4…thelevelsofcarbondioxidehaveincreasedgreatlyoverthelast100to150years.Para.5…itistheburningofmoreandmorefossilfuelsthathasresultedinthisincreaseincarbondioxide.Para.6…theattitudesofscientiststowardsthisrisearecompletelydifferent.Para.7Nooneknowstheeffectsofglobalwarming.Doesthatmeanweshoulddonothing?agreeledtohappenParagraph1Paragraphs2&5Paragraph6Part1Part2Part42.MainideaofeachpartPart3Paragraph7Howglobalwarmingcomesabout?(全球变暖是怎样产生的)Twodifferentopinionsaboutglobalwarming.Theearthisbecomingwarmer.Shouldwedoanything?Howhasthiscomeaboutanddoesitmatter?What’sthequestionthathasconfusedusalot?Whowrotethemagazinearticle?What’sthenameofthemagazine?SophieArmstrong.EarthCare.Readingtips:InEnglish,somenounsbeginwithacapitalletter(大写字母),suchasnamesofpeopleandplaces,titles(标题)ofmagazines,newspapers,storiesandbooks,people’stitles(头衔),etc..globalwarmingPara.2Humanactivityhascausedglobalwarming.Para.3Theincreaseoftemperatureisduetotheburningoffossilfuels.Para.4Thelevelsofcarbondioxidehaveincreasedgreatly.Para.5Theburningofmoreandmorefossilfuelshasresultedintheincreaseofcarbondioxide.=Thisincreaseincarbondioxidehasresultedfromtheburningofmoreandmorefossilfuels.Theattitudesofscientiststo/towardstheriseDrFosterGeorgeHamblyAttitudeReasonsThetrendwhichincreasethetemperatureby5degreeswouldbeacatastrophe.Theyareopposedtotheviewandbelievethatweshouldnotworryabouthighlevelsofcarbondioxideintheair.Theremaybeariseofseveralmetersinthesealevel,orpredictseverestorms,floodsdroughts,famines,thespreadofdiseaseandthedisappearanceofspecies.Itwillmakeplantsgrowquicker;cropswillproducemore;Itwillencourageagreaterrangeofanimals-allofwhichwillmakelifeforhumanbeingsbetter.Theauthorpr