SavingtheearthSEFC(old)课件
日期：2010-01-16 01:25
thesoiliswasheddownStrongwindscanalsoblowawaythesoilThreekindsofpollution:EarthpollutionAirpollutionWaterpollutionAirpollutionmainlycomesfrom()，()and()factoriespowerstationscarThe____________graduallydestroystreesintheforests“chemicalrain”In1986therewasabadaccidentatanuclearpowerstationinRussiaItissaid125，thereislessandlessgrassAtlast，itcompletelybecomesadesertHowdoesthedesertcomeintobeing?1cattle2soillosingThenumbersofcattleincreaseTherainsfailtocome}ThecattleeatallthegrassTreesarecutdownNothingcanholdthesoilWhenitrains，SavingtheEarthLesson34北京鲁迅中学李梓维EarthpollutionAirpollutionWaterpollutionThreekindsofpollutionThereliveddifferentkindsofanimalsinthebeautifulgrasslandGradually，000peoplediedinRussiaasaresultofillnessescausedbythisaccidentMatchthecountrieswiththedisasters（灾难）GermanyRussiaIndianuclearaccidentchemicalraindangerousgasfromafactoryEarthpollutionAirpollutionWaterpollutionThreekindsofpol，
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