Unit 2 Topic 3 Section C 课件 1

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

2、nnuclearrenewableelectricefficient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.Lookatthefollowingpicturesandgue

3、ssthemeaningoftheunderlinedword.ThemaglevtraininShanghaiusesmagnets.Themagnetspushthetrainforward.Lookatthefollowingpicturesandguessthemeaningoftheunderlinedwords.…peopleproducepowerfromcoal,butitisverydirtyandcausesacidrain.Lookatthefollowingpicturesandguesstheme

4、aningoftheunderlinedwords.Nuclearpoweriscleanbutitisverydangerous.Lookatthefollowingpicturesandguessthemeaningoftheunderlinedword.Read1aandanswerthefollowingquestions.Whyisn’tcoalagoodmaterial?Whatisthedisadvantageofusingnuclearpower?Whatdoyouthinkofelectriccars?W

5、hatdoyouthinkofthemaglevtrain?Itisverydirtyandcausesacidrain.Nuclearpowercanbeverydangerous.Itisquietandquick.Theyareveryefficientandcostverylittletorun.Choosetherightpictureforeachparagraphof1a.abcChinaisoneofthefirstcountriesintheworldtousebiogastechnology.Farme

6、rsrecyclestraw,grassandanimalwastetomakebiogas.Thisrenewableenergyisusedinpeople’severydaylife.Electricvehiclesweredevelopedinthe1990s.Nowthereareelectricvehiclesinmanycountries.Theyareveryefficientandcostverylittletorun.Althoughelectricvehiclesproducenopollution,

7、therewillbeanincreaseinelectricityneedsiftheyarewidelyused.InChina,thebest-knownmaglevtrainistheGerman-builtoneinShanghai.Ittakespeoplejust7minutestogototheairport30kmawayandreachesatopspeedof431kmperhour.Itisquietandquick.Thereisnowheelnoise,becausetherearenowhee

8、ls.Maglevtrainsareveryenergyefficientanddonotpollutetheair.However,maglevguidepathsaremuchmoreexpensivethantraditionalsteelrailways.1bWorkaloneRead1aaga