1、如果地球上没有水 If There Is No Water On Earth Teachersalwaysaskustosaveasmuchwateraspossible,butmoststudentsjustforgetitquickly.Imaginethereisnowateronearth,therewillbenolife,becauseweneedwatertokeepliving.Theanimalsandplantsalsoneedwatertobealive.Sowemustcherishthewaterandusethemintheproperw