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时间:2021-01-16
《仁爱英语九年级unit2topic3sectionC课件 (1).ppt》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
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
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