Unit 2 Topic 3 Section C 课件 1.ppt

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1、Unit2SavingtheEarthTopic3Whatcanwedoathometoprotecttheenvironment?SectionC课件1Usebut,and,whiletoanswerthefollowingquestions.Whatactivitiesshouldwedotoprotecttheenvironment?Whatactivitiesshouldn’twedotoprotecttheenvironment?Lookupthesewordsinadictionary.poweracidrainnuclearrenewableel

2、ectricefficient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.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