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12TheEarthPeriod1Module4ThenaturalworldOxfordEnglishMsGuo:Lookatthispicture.Whatisit?Kitty:It’stheEarth.MsGuo:Thegreenandbrownpart

sareforestsandland.Whataretheblueparts?Joe:Ithinkthey’reoceans.MsGuo:Yes,theyare.TheEarthwasverycleanandbeautifulinthep

ast,butnowsomepartsaredirty.CanwedoanythingtohelptheEarth?Alice:Yes.Weshouldstopthrowingrubbishintorivers.Peter:Weshouldstopcuttin

gdownsomanytrees.Kitty:Weshouldstopusingplasticbags.Weshouldstopthrowingrubbishintorivers.Weshouldstopcuttingd

ownsomany（这么多）trees.Weshouldstopusingplasticbags（塑料袋）.Weshouldstopthrowingrubbishintorivers.Weshouldstopcuttingdown

somanytrees.Weshouldstopusingplasticbags.Let’sread！should+do(动词原形)stop+doingsth.停止干某件事情cutcuttinguseusingChooseandfill()

1.Weshouldstop_____somanytrees.A.cutdownB.cutsdownC.cuttingdown()2.Weshouldstop_____intorivers.A.thr

owrubbishB.throwingrubbishC.throwsrubbish3.用所给词的适当形式填空。Weshould______(stop)_______(use)plasticbags.CBstopusing1.Listenan

dreadStudent’sBookpage80.2.Finish“Thinkandwrite”onpage85.3.Writethenewwordsthreetimes.