仁爱英语九年级unit2topic3sectionC课件 (1).ppt

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1、Unit2Topic3Wouldyouliketobeagreenerperson?SectionCLookupthesewordsinadictionary.poweracidrainnuclearrenewableelectricefficient电力；动力；力酸雨原子核的，原子能的；核动力的可更新的电动的，用电的效率高的；有能力的Windisusedforproducingelectricityinmanyplaces.Lookatthefollowingpicturesandguessthemeaningof

2、theunderlinedword.Moreandmorepeopleareinterestedinelectriccars.Lookatthefollowingpicturesandguessthemeaningoftheunderlinedword.…peopleproducepowerfromcoal,butitisverydirtyandcausesacidrain.Lookatthefollowingpicturesandguessthemeaningoftheunderlinedwords.Nuclear

3、poweriscleanbutitisverydangerous.Lookatthefollowingpicturesandguessthemeaningoftheunderlinedword.Read1aandanswerthefollowingquestions.Whyisn’tcoalagoodmaterial?Whatisthedisadvantageofusingnuclearpower?Whatdoyouthinkofelectriccars?Whatdoyouthinkofthemaglevtrain?

4、Itisverydirtyandcausesacidrain.Nuclearpowercanbeverydangerous.Itisquietandquick.Theyareveryefficientandcostverylittletorun.Choosetherightpictureforeachparagraphof1a.abcChinaisoneofthefirstcountriesintheworldtousebiogastechnology.Farmersrecyclestraw,grassandanim

5、alwastetomakebiogas.Thisrenewableenergyisusedinpeople’severydaylife.Electricvehiclesweredevelopedinthe1990s.Nowthereareelectricvehiclesinmanycountries.Theyareveryefficientandcostverylittletorun.Althoughelectricvehiclesproducenopollution,therewillbeanincreaseine

6、lectricityneedsiftheyarewidelyused.InChina,thebest-knownmaglevtrainistheGerman-builtoneinShanghai.Ittakespeoplejust7minutestogototheairport30kmawayandreachesatopspeedof431kmperhour.Itisquietandquick.Thereisnowheelnoise,becausetherearenowheels.Maglevtrainsarever

7、yenergyefficientanddonotpollutetheair.However,maglevguidepathsaremuchmoreexpensivethantraditionalsteelrailways.1bWorkaloneRead1aagainandfilloutthefollowingtable.WaytoproducepowerAdvantageDisadvantagebiogaselectricvehiclemaglevtrainrenewableefficient,cheap,nopol

8、lutionquiet,quick,energryefficient,nopollutionItwillcauseanincreaseinelectricityneeds.muchmoreexpensivethantraditionaltrains.a.Therearemorethan3000powerstationsintheworldtha