仁爱版九年级上Unit2Topic3SectionC课件.ppt

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1、Unit2Topic3Whatkindsofthingscanwedotoprotecttheenvironment?SectionC---ByDavid1._____it’sraininghard,hekeepsonworkingoutside.2.Kangkangcanplaythevoilin,______Ican’t.3.Mr.Linisverykind_____heisveryhumorous,too.4.Thesuitfitsmewell_____Ican’taffordit.ThoughwhileandbutFillintheblanksusingbut

2、,and,thoughandwhile.Revision:Whatnewwayshavebeeninventedtoproducepower?Askandanswer:electricvehiclebiogastechnologyWhatnewwayshavebeeninventedtoproducepower?Askandanswer:maglevtrainwaterbatteryLookupthesewordsinadictionary.poweracidrainnuclearrenewableelectricefficient电力；动力；力酸雨原子核的，原子能的

3、；核动力的可更新的电动的，用电的效率高的；有能力的Windisusedforproducingelectricityinmanyplaces.Lookatthefollowingpicturesandguessthemeaningoftheunderlinedword.GuessinggameMoreandmorepeopleareinterestedinelectriccars.GuessinggameThemaglevtraininShanghaiusesmagnets.Themagnetspushthetrainforward.Guessinggame…peop

4、leproducepowerfromcoal,butitisverydirtyandcausesacidrain.GuessinggameNuclearpoweriscleanbutitisverydangerous.GuessinggameReadandunderstand1aChoosetherightpictureforeachparagraph.Inmanycountries,peopleproducepowerfromcoal,butitisverydirtyandcausesacidrain.Somecountriesusenuclearenergytop

5、roducepower.However,nuclearpowercanbeverydangerous.Tosolvetheenergyproblem,peopleallovertheworldarelookingallthetimefornewwaystoproducepower.abcc______Chinaisoneofthefirstcountriesintheworldtousebiogastechnology.Farmersrecyclestraw,grassandanimalwastetomakebiogas.Thisrenewableenergyisus

6、edinpeople’severydaylife.abcChoosetherightpictureforeachparagraph.______Electricvehiclesweredevelopedinthe1990s.Nowthereareelectricvehiclesinmanycountries.Theyareveryefficientandcostverylittletorun.Althoughelectricvehiclesproducenopollution,therewillbeanincreaseinelectricityneedsiftheya

7、rewidelyused.aabc______InChina,thebest-knownmaglevtrainistheGerman-builtoneinShanghai.Ittakespeople30kmtotheairportinjust7minutesandreachesatopspeedof431kmperhour.Itisquietandquick.Thereisnowheelnoise,becausetherearenowheels.Maglevtrainsareveryenergyefficientanddonotpollutethea