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河北省武邑中学2016届高考英语一轮复习Unit4Globalwarming导学案新人教版选修6ReadingTHEEARTHISBECOMINGWARMER—BUTDOESITMATTER?Duringthe20thcenturythetemperatureoftheearthroseaboutonedegreeFahrenheit.Thatprobablydoesnotseemmuchtoyouorme,butitisarapidincreasewhen___1_____(compare)toothernaturalchanges.Sohowhasthiscomeaboutanddoesitmatter?EarthCare’sSophieArmstrongexploresthesequestions.Thereisnodoubtthattheearthisbecomingwarmer(seeGraph1)andthatitishumanactivitythathascausedthisglobalwarmingratherthanarandombutnaturalphenomenon.Allscientistssubscribetotheviewthattheincreaseintheearth’stemperatureisduetotheburningoffossilfuelslikecoal,naturalgasandoiltoproduceenergy.Somebyproductsofthisprocessarecalled“greenhouse”gases,themostimportantoneofwhichiscarbondioxide.DrJaniceFosterexplains:“Thereisanaturalphenomenonthatscientistscallthe‘greenhouseeffect’.Thisiswhensmallamountsofgasesintheatmosphere,likecarbondioxide,methaneandwatervapour,trapheatfromthesunandthereforewarmtheearth.Withoutthe‘greenhouseeffect’,theearth_____2________(be)aboutthirty-threedegreesCelsiuscoolerthanitis.So,weneedthosegases.Theproblembeginswhenweaddhugequantitiesofextracarbondioxideintotheatmosphere.Itmeansthatmoreheatenergytendstobetrappedintheatmospherecausingtheglobaltemperaturetogoup.”Weknowthatthelevelsofcarbondioxide_____3_____(increase)greatlyoverthelast100to150years.ItwasascientistcalledCharlesKeeling,whomadeaccuratemeasurementsoftheamountofcarbondioxideintheatmospherefrom1957to1997.Hefoundthatbetweentheseyearsthecarbondioxideintheatmospherewentupfromaround315partstoaround370partspermillion(seeGraph2).Allscientistsacceptthisdata.Theyalsoagreethatitistheburningofmore andmorefossilfuelsthathasresultedinthisincreaseincarbondioxide.Sohowhighwillthetemperatureincreasego?DrJaniceFostersaysthatoverthenext100yearstheamountofwarmingcouldbeaslowas1to1.5degreesCelsius,butitcouldbeashighas5degrees.However,theattitudesofscientiststowardsthisrisearecompletelydifferent.Ontheonehand,DrFosterthinksthatthetrendwhichincreasesthetemperatureby5degreeswouldbeacatastrophe.Shesays,“Wecan’tpredicttheclimatewellenoughtoknowwhattoexpect,butitcouldbeveryserious.”Otherswhoagree____4____herthinktheremaybeariseofseveralmetresinthesealevel,orpredictseverestorms,floods,droughts,famines,thespreadofdiseasesandthedisappearanceofspecies.Ontheotherhand,therearethose,likeGeorgeHambley,whoareopposedtothisviewandbelievethatweshouldnotworryabouthighlevelsofcarbondioxideintheair.Theypredictthatanywarmingwillbemildwithfewbadenvironmentalconsequences.Infact,Hambleystates,“Morecarbondioxideisactuallyapositivething.Itwillmakeplantsgrowquicker;cropswillproducemore;itwillencourageagreaterrangeofanimals—allofwhichwillmakelifeforhumanbeingsbetter.”Greenhousegasescontinuetobuildupintheatmosphere.Evenifwestartreducingtheamountofcarbondioxideandothergreenhousegases,theclimateisgoingtokeeponwarmingfordecadesorcenturies.Nooneknowstheeffectsofglobalwarming.Doesthatmeanweshoulddonothing?Or,aretheriskstoogreat?UsingLanguageWHATCANWEDOABOUTGLOBALWARMING?DearEarthCare,Iamdoingaprojectonbehalfofmyschoolaboutglobalwarming.Sometimestfeelthatindividualscanhavelittleeffectonsuchhugeenvironmentalproblems.However,Istillthinkpeopleshouldadvocateimprovementsinthewayweuseenergytoday.AsI’mnot surewheretostartwithmyproject,Iwouldappreciateanysuggestionsyoumayhave.Thankyou!OuyangGuangDearOuyangGuang,Therearemanypeoplewhohaveacommitmentlikeyours,buttheydonotbelievetheyhavethepowertodoanythingtoimproveourenvironment.Thatisnottrue.Together,individualscanmakeadifference.Wedonothavetoputupwithpollution.Thegrowthofthegreenhousegas,carbondioxideintheairactuallycomesasaresultofmanythingswedoeveryday.Hereareafewsuggestionsonhowtoreduceit.Theyshouldgetyoustartedwithyourproject.1.Weusealotofenergyinourhouses.ItisOKtoleaveanelectricalapplianceonsolongasyouareusingit—ifnot,turnitoff!Donotbecasualaboutthis.Soifyouarenotusingthelights,theTV,thecomputer,andsoon,turnthemoff.Ifyouarecold,putonmoreclothesinsteadofturninguptheheat.2.Motorvehiclesusealotofenergy—sowalkorrideabikeifyoucan.3.Recyclecans,bottles,plasticbagsandnewspapersifcircumstancesallowyouto.Ittakesalotofenergytomakethingsfromnewmaterials,so,ifyoucan,buythings_____5_____(make)fromrecycledmaterials.4.Getyourparents____6______(buy)thingsthatareeconomicalwithenergy—thisincludescarsaswellassmallerthingslikefridgesandmicrowaves.5.Planttreesinyourgardenoryourschoolyard,astheyabsorbcarbondioxidefromtheairandrefreshyourspiritwhenyoulookatthem.6.Finallyandmost______7_______(important),beaneducator.Talkwithyourfamilyandfriendsaboutglobalwarmingandtellthemwhatyouhavelearned.Remember—yourcontributioncounts!EarthCare 自学加油站1.circumstance n[通常作复数]环境;情形;情况:Recyclecans,bottles,plasticbagsandnewspapersifcircumstancesallowyouto.in/underthecircumstances在这种情况下;情形既然如此:Underthecircumstanceshefeltunabletoacceptthejob.undernocircumstances在任何情况下决不;无论如何不:=innocaseUndernocircumstancesshouldwelendmoneytohim.2.keepon(doingsth):continue(doingsth)继续（做某事物）Therainkeptonallnight.Priceskeeponincreasingthisyear.短语拓宽：keepawayfrom________keepback________；keepinmind_______；keepup___________；keepupwith____________；keepintouchwithsb___________3.onthewholeconsideringeverything总的说来;一切都考虑在内:Onthewhole,Ithoughtthefilmwasprettygood.Onthewhole,Iaminfavoroftheplan.4.onbehalfofsb/onsb’sbehalf做某人的代表或代言人:OnbehalfofmycolleaguesandmyselfIthankyou.5.putupwithsb/sth:忍受；容忍Therearemanyinconveniencesthathavetobeputupwithwhenyouarecamping.【思维拓展】表示“忍受；容忍”的词还有________________6.Remember---yourcontributioncounts!1)contributionn.贡献CharlieChaplinmadegreatcontributionstothefilmindustry.Hehasmadeanimportantcontributiontothecompany’ssuccess.makeacontribution/contributionsto…contributevi.捐赠，贡献，有助于Thisnewdiscoverywillcontributetoallhumanity.2)count:matter有重要性不用于进行时Everypointinthisgamecounts.It’sthethoughtthatcounts.贵在心意(usedaboutasmallbutkindactionorgift)7.Agreenhouseismadeofglassandisusedforgrowingplants,especiallyduringcoldweather.Bamboocanbeusedforbuildinghouses.Bamboocanbeusedtobuildhouses.Thetreeleavescanbeusedformedicine.比较：Thetreeleafcanbeusedasabookmark.复习：beusedtodoing___________;usedtodo____________8.Allscientistssubscribetotheviewthattheincreaseintheearth’stemperatureisduetotheburningoffossilfuelslikecoal,naturalgasandoiltoproduceenergy. ①that引导同位语从句，进一步解释view的内容。试译：我认为，应该控制世界人口。Iholdtheviewthatthepopulationoftheworldshouldbecontrolled.②increase（vi.）in表示“在某方面增加增长”。如：Thevillagehasincreasedinpopulation.村子的人口增加了。Theyhaveincreasedthepriceby50%.Thenumberofthestudentsinthisuniversityhasalmostincreasedto10,000.③theburningoffossilfuels“化石燃料的燃烧”。thedoingofsth是名词化的动名词用法。如：ThemakingofpaperfirsttookplaceinChina.造纸最早发生在中国。
