Unit2SavingtheEarth

Topic3Whatcanwedoathometoprotecttheenvironment?

SectionC1/14Areyouagreenerperson?2/141aReadandunderstand.

Lookatthepictures.Doyouknowwhattheyare?Choosetherightpictureforeachparagraph.

paragraph2

paragraph3

Paragraph43/141bRead1aandmatchthewordswiththepicturesonPage48.A.acidrain

B.nuclearenergyC.biogas

ACBadj.原子核，原子能酸雨4/14Paragraph2Itskeydisadvantageisthattheprocess

requiresalongtime(upto30days)andthecostishigh.它最大缺點(diǎn)是生產(chǎn)過程需要很長時間（長達(dá)30天）和成本高。processn.步驟，過程v.加工，處理requirev.需要，需求require有兩種使用方法：

*require(doing)sth.表示主語“該...了”。

如：Thefloorrequireswashing.地板該洗了。

*berequiredtodosth.表示主語必須（被要求）...如:Studentsarerequiredtoattendclasses.

學(xué)生必須按要求上課。

5/14Paragraph3

Electricvehicleswere__________inthe1990s.OnApril11,,anewkindofelectricvehicle_______“Yezi”wasshownintheShanghaiWorldExpo.Itproduces_________fromthesun,thewindandCO2.Itcannotonlyprotecttheenvironmentbutalso_____energy.It’stoosmalltoholdmanypeople,but_______modelswillbedevelopedinthenearfuture.develop,electric,name,save,largedevelopednamedelectricitysavelarger6/14Paragraph41.去30公里以外飛機(jī)場只需花費(fèi)人們七分鐘時間。Ittakespeoplejust7minutestogototheairport30kmaway.

2.火車最高時速能夠到達(dá)每小時431公里。Thetraincanreachatopspeedof431kmperhour.

7/141cRead1aagainandcompletethetable.

ItemAdvantageDisadvantagebiogas

electricvehicle

maglevtrain

renewablelongprocessandhighcostforitsbuildingsaveenergy,nopollutiontoosmalltoholdmanypeople

quiet,quick,energy-efficient,nopollution

muchmoreexpensivethantraditionalsteelrailways8/14

coaldirty,acidnuclearenergydangerouselectricvehiclesthesun,thewindandCO2protecttheenvironment,saveenergy,smallmaglevtrainGerman-built,quiet,quick,nowheelnoise,energy-efficient,notpollutetheairbiogastechnology–straw,grassandanimalwaste,everydaylives,require,thehighcostRetell1a

9/14German

n.德國人，德語Germanyn.德國pl.

Germans

wheeln.輪，車輪，輪子E.g.TheyareGermans,andtheyarefromGermany.

languagepoints10/142aReadthepassagebelowandmatchthepictureswiththesentences.Thendiscussindetailtheuseofoneenergysource.

Thesun,wind,wavesandheatfromdeepintheearthareenergysources.Theywillneverrunoutsotheyarecalledrenewablesources.In,about16%ofenergyusedworldwidecamefromrenewablesources.Theuseofitisincreasingrapidlyeachyear.

deepadj.深，厚adv.深深地，在深處runout用完，耗盡E.g.Hehasrunoutoffood,sohischildrenarehungry.11/142aReadthepassagebelowandmatchthepictureswiththesentences.Thendiscussindetailtheuseofoneenergysource.Windcanproduceelectricityinmanyplaces.Peopleusesunlighttoproduceelectricity.Seawavesareusedforproducingelectricity.Peopleusehotwaterorsteamfromdeepintheearthtoproduceelectricityandheatforfactories,schoolsandhomes.陽光，日光水蒸汽，蒸汽，水汽12/14

Sunlightcanproducealotofenergy.Peoplebegantousetheenergyfromthesunlightindifferentwaysmanyyearsago.Wecanuseittowarmthehouseinthewinter,toheatthewaterforbaths,andtoproduceelectricity.What’smore,wecanevenuseittorunvehiclesdirectlyinthenearfuture.Asisknowntous,theenergyfromthesunlighthasalotofadvantages.Forexample,itisclean,renewableandnon-polluting.Besides,itdoesnoharmtoournature.Sowe’dbetteruseitasmucha