湘教版九年級上Unit2

Fillintheblanksusingbut,and,thoughandwhile.1._____it’sraininghard,hekeepsonworkingoutside.2.Kangkangcansolvetheproblem,______Ican’t.3.Mr.Linisverykind_____heisveryhumorous.4.Thesuitfitsmewell_____Ican’taffordit.Though

while

and

but3WrittenworkWhatgoodhabitsprotecttheenvironment?Listasmanyasyoucan.Themoreyoulist,thegreeneryouare.GoodHabits1.Turnoffthelightswhenyouleavearoom.2.Walkorrideabikeinsteadoftakingabusorataxi.

3.Takeaclothbagwhenyougoshopping.4.Don'tuseplasticbags.a.Therearemorethan3000powerstationsintheworldthatproduceelectricitybyburninggarbagetoheatwater.b.Peopleusethemovementofwatertoproduceelectricity.c.Windisusedforproducingelectricityinmanyplaces.d.Peopleproduceelectricityfromthesun.()()()()圖文搭配abdcChoosetherightpictureforeachparagraphof1a.abcChinaisoneofthefirstcountriesintheworldtousebiogastechnology.Farmersrecyclestraw,grassandanimalwastetomakebiogas.Thisrenewableenergyisusedinpeople’severydaylife.Electricvehiclesweredevelopedinthe1990s.Nowthereareelectricvehiclesinmanycountries.Theyareveryefficientandcostverylittletorun.Althoughelectricvehiclesproducenopollution,therewillbeanincreaseinelectricityneedsiftheyarewidelyused.

InChina,thebest-knownmaglevtrainistheGerman-builtoneinShanghai.Ittakespeoplejust7minutestogototheairport30kmawayandreachesatopspeedof431kmperhour.Itisquietandquick.Thereisnowheelnoise,becausetherearenowheels.Maglevtrainsareveryenergyefficientanddonotpollutetheair.However,maglevguidepathsaremuchmoreexpensivethantraditionalsteelrailways.Read1aandanswerthefollowingquestions.Whyisn’tcoalagoodmaterial?Whatisthedisadvantageofusingnuclearpower?Whatdoyouthinkofelectriccars?Whatdoyouthinkofthemaglevtrain?Itisverydirtyandcausesacidrain.Nuclearpowercanbeverydangerous.

Itisquietandquick.Theyareveryefficientandcostverylittletorun.1bWorkaloneRead1aagainandfilloutthefollowingtable.WaytoproducepowerAdvantageDisadvantagebiogaselectricvehiclemaglevtrainrenewable

efficient,cheap,nopollution

quiet,quick,energyefficient,donotpollutetheair

Therewillbeanincreaseinelectricityneeds.muchmoreexpensivethantraditionalsteelrailways.HarmWehave__________theearthandmadeit________.ProblemTheriveris_______andthe____________oftheearthisrising.Theearthis_________forhelp.SuggestionPlant________trees,putthe_________intodustbinsandstopfactoriesfrompour