OrganicFarming课件
日期：2010-07-11 07:47
wemightwonderwhatorganicfarmingisWeguessthewritermightexplaintouswhatitisWhattypeofwritingisthispassage?ExpositionmeansexpoundingorexplainingItexplainsorexploressomething，thecausesofanaturalorsocialphenomenon，OrganicFarmingWhenwereadthetitle，theplanningofaproject，suchastheprocessofmakingamachine，orthesolutionofaproblemReadthefirstparagraphandanswer:Whatisorganicfarming?OrganicfarmingmeansgrowingcropswithoutchemicalfertilizersOrganicfarmersdon’tusechemicalfertilizersHowcantheymaketheirsoilfertile?OrganicfarmershavetwowaystomaketheirsoilfertileWhatarethey?Organicfarmersusenaturalwastefromanimalsinsteadofchemicalfertilizers(Whydon’ttheyusechemicalfertilizers?)Farmersmakesurethatwhatisleftinthegroundafterharvestingbecomesanaturalfertilizerforthenestyear’scrop(Howcantheydoit?)Readthesecondparagraphandanswer:Howmanyproblemsarecausedbyusingchemicalfertili，
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