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1、Unit2SavingtheEarthTopic3Whatcanwedoathometoprotecttheenvironment?SectionC課件1Usebut,and,whiletoanswerthefollowingquestions.Whatactivitiesshouldwedotoprotecttheenvironment?Whatactivitiesshouldn’twedotoprotecttheenvironment?Lookupthesewordsinadictionary.poweracidrainnuclearrenewableel
2、ectricefficient電力；動力；力酸雨原子核的，原子能的；核動力的可更新的電動的，用電的效率高的；有能力的Windisusedforproducingelectricityinmanyplaces.Lookatthefollowingpicturesandguessthemeaningoftheunderlinedword.Moreandmorepeopleareinterestedinelectriccars.Lookatthefollowingpicturesandguessthemeaningoftheunderlinedword.Themag
3、levtraininShanghaiusesmagnets.Themagnetspushthetrainforward.Lookatthefollowingpicturesandguessthemeaningoftheunderlinedwords.…peopleproducepowerfromcoal,butitisverydirtyandcausesacidrain.Lookatthefollowingpicturesandguessthemeaningoftheunderlinedwords.Nuclearpoweriscleanbutitisveryd
4、angerous.Lookatthefollowingpicturesandguessthemeaningoftheunderlinedword.Read1aandanswerthefollowingquestions.Whyisn’tcoalagoodmaterial?Whatisthedisadvantageofusingnuclearpower?Whatdoyouthinkofelectriccars?Whatdoyouthinkofthemaglevtrain?Itisverydirtyandcausesacidrain.Nuclearpowercan
5、beverydangerous.Itisquietandquick.Theyareveryefficientandcostverylittletorun.Choosetherightpictureforeachparagraphof1a.abcChinaisoneofthefirstcountriesintheworldtousebiogastechnology.Farmersrecyclestraw,grassandanimalwastetomakebiogas.Thisrenewableenergyisusedinpeople’severydaylife.
6、Electricvehiclesweredevelopedinthe1990s.Nowthereareelectricvehiclesinmanycountries.Theyareveryefficientandcostverylittletorun.Althoughelectricvehiclesproducenopollution,therewillbeanincreaseinelectricityneedsiftheyarewidelyused.InChina,thebest-knownmaglevtrainistheGerman-builtoneinS
7、hanghai.Ittakespeoplejust7minutestogototheairport30kmawayandreachesatopspeedof431kmperhour.Itisquietandquick.Thereisnowheelnoise,becausetherearenowheels.Maglevtrainsareveryenergyefficientanddonotpollutetheair.However,maglevguidepathsaremuchmoreexpensivethantraditionalsteelrailways.1
8、bWorkaloneRead1aaga
