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1、Protectourenvironment.Class7,Grade2,ThisistheEarth.Forthetimebeing,wehaven’tfoundtheotherplanettolive,so,weshould__________ouronlyenvironment.protectBut,manypeople________________environment,suchaswastingwater,cuttingtrees,andproducingharmfulgasesandsoon.aredestroyingNo
2、wdays,manyfactoriesoften____thepollutedwaterintotheriver.pourIthasbecomeaseriousprobleminChina. Ifitwentonlikethis,therewillbenodrinkingwaterinChina.Andpeopleoftenproduce_______gases.Itisbadforourbreath,moreimportantly,itisdestroyingourEarth.harmfulAutoPollutionParticul
3、armatter–pm2.5TheaverageconcentrationofPM2.5inBeijing'sairoverthepast24hourshasexceededthelimitsfor"airwithacceptablequality",asdefinedbytheMinistryofEnvironmentalProtection'sairqualitystandards.Lungcancer,deathGarbagePollutionHaveyouseenthesekindofscenes?WhitePollution
4、banonfreeplasticbagsWaterPollutionGreenhouseEffectSeaLevelRiseLandDesertificationAcidRainForestDevastationVideosBACKThedirtygasesdyedit___________!!!blackTreesareourfriends.Theycantakeaway_____andchangecarbondioxideinto________forustobreathe.Butnow,lotsoftreesarecutbype
5、ople.TherearelessandlesstreesonEarth.dustoxygen_______trees,soilwouldbewashedaway.WithoutCanyouguesswhatarethedogsdoing?Ourhomeisbeingdestroyed,andthepollutionsaregettingmoreandmoreserious.Theworldisnotonlyhungry，butalsothirstyforwater.Mancanonlydrinkandusetheother3%--t
6、hefreshwaterthatcomesfromrivers，lakes，underground.Andwecannotevenuseallofthat,becausesomeofitisintheformoficebergsandglaciers.Evenworse,someofithasbeenpolluted.Somepeopleimaginetoleavethisfearfulworld,onlytocomedowntoearth.Scientiststellusthatofallthestarsknowninthevast
7、universe,theearthistheonlyplanetonwhichhumanbeingscansurvive.Butnowwearefacingtheriskyproblemsconcerningourexistenceonearth.Manyofourhabitscausepollution,especiallyourhabitofusingthingsonceandthenthrowingthemaway.thiscreatesmountainsofrubbishanditpollutesourlandandseas.
8、Forexample,peoplethrowawayasmanyastenmillionbottlesintheUKeveryyear.ThatisenoughtoreachallthewayfromEarthtothe
