仁爱版九年级上Unit2Topic3SectionC课件

Unit2Topic3Whatkindsofthingscanwedotoprotecttheenvironment?SectionC---ByDavid1._____it’sraininghard,hekeepsonworkingoutside.2.Kangkangcanplaythevoilin,______Ican’t.3.Mr.Linisverykind_____heisveryhumorous,too.4.Thesuitfitsmewell_____Ican’taffordit.ThoughwhileandbutFillintheblanksusingbut,and,thoughandwhile.Revision:Whatnewwayshavebeeninventedtoproducepower?electricvehiclebiogastechnologyWhatnewwayshavebeeninventedtoproducepower?maglevtrainwaterbatteryLookupthesewordsinadictionary.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.Lookatthefollowingpicturesandguessthemeaningoftheunderlinedword.Moreandmorepeopleareinterestedinelectriccars.ThemaglevtraininShanghaiusesmagnets.Themagnetspushthetrainforward.…peopleproducepowerfromcoal,butitisverydirtyandcausesacidrain.Nuclearpoweriscleanbutitisverydangerous.1aChoosetherightpictureforeachparagraph.Inmanycountries,peopleproducepowerfromcoal,butitisverydirtyandcausesacidrain.Somecountriesusenuclearenergytoproducepower.However,nuclearpowercanbeverydangerous.Tosolvetheenergyproblem,peopleallovertheworldarelookingallthetimefornewwaystoproducepower.abcc______Chinaisoneofthefirstcountriesintheworldtousebiogastechnology.Farmersrecyclestraw,grassandanimalwastetomakebiogas.Thisrenewableenergyisusedinpeople’severydaylife.abcChoosetherightpictureforeachparagraph.______Electricvehiclesweredevelopedinthe1990s.Nowthereareelectricvehiclesinmanycountries.Theyareveryefficientandcostverylittletorun.Althoughelectricvehiclesproducenopollution,therewillbeanincreaseinelectricityneedsiftheyarewidelyused.aabc______InChina,thebest-knownmaglevtrainistheGerman-builtoneinShanghai.Ittakespeople30kmtotheairportinjust7minutesandreachesatopspeedof431kmperhour.Itisquietandquick.Thereisnowheelnoise,becausetherearenowheels.Maglevtrainsareveryenergyefficientanddonotpollutetheair.However,maglevguidepathsaremuchmoreexpensivethantraditionalstreetrailways.babc1.Whyisn’tcoalagoodmaterial?2.Whatisthedisadvantageofusingnuclearpower?3.Whatdoyouthinkofelectriccars?4.Whatdoyouthinkofthemaglevtrain?Becauseitisverydirtyandcausesacidrain.Becauseitcanbeverydangerous.Itisquietandquick.Theyareveryefficientandcostverylittletorun.Answerthefollowingquestionsaccordingto1a.Read1aagainandfilloutthefollowingtable.WaytoproducepowerAdvantageDisadvantagebiogaselectricvehiclemaglevtrainrenewableefficient,cheap,nopollutionquiet,quick,energyefficient,nopollutionItwillcauseanincreaseinelectricityneeds.muchmoreexpensivethantraditionaltrains.1bpowerstationsthemovementofwaterthewindpowersolarenergya.Therearemorethan3000powerstationsintheworldthatproduceelectricitybyburninggarbagetoheatwater.b.Peopleusethemovementofwatertoproduceelectricity.c.Windisusedforproducingelectricityinmanyplaces.d.Peopleproduceelectricityfromthesun.(b)(c)(d)(a)2aWhathabitsaregoodfortheenvironment?Listasmanyasyoucan.Themoreyoulist,thegreeneryouare.GoodHabits1.Turnoffthelightswhenyouleavearoom.2.Walkorrideabikeinsteadoftakingabusorataxi.3.Takeaclothbagwhenyougoshopping.4.Don'tuseplasticbags.3Homework:1.Copythewordsandphrases.抄写单词和词组。2.StudyCase:导学案Unit2Topic3SectionC3.Recite1aPassage.背诵1a课文。