Unit+5+Working+the+Land+Using+Language+Writing写作高中英语人教版（2019）选择性必修第一册.pptx

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Unit+5+Working+the+Land+Using+Language+Writing写作高中英语人教版（2019）选择性必修第一册.pptx

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Chemical

Versus

OrganicFarmingU5Workingtheland-Usinglanguage

ReadingU5Workingtheland-Usinglanguage

ChemicalVersusOrganicFarmingWhichtomatoesdoyouprefer?5yuan/kg15yuan/kgNormaltomatoesOrganictomatoesSometimestherearepestsinthecrops.Farmerswillusepesticidestokillpestsorinsects.ChemicalfertilizersNoChemicalpesticideandartificialfertilisers

chemicalpesticidesartificialfertilisersinwidespreaduseinfarmingSince1950sManyfarmerswelcomedthem,becausetheycan_______________and_________________.fightcropdiseaseincreaseproductionSomescientistshavefound__________________________________________NOW＋P1Howeverlong-termuseharmboththelandandpeopleshealth论点

P2Forexamplesprayingpesticidesoncropsstayinthe________and__________________________foralongtimeaffectsthe_______theanimalsandhumanswhodigestmay__________and______________bacteriainsectsharmfulhelpfulhaveacancerprohibitedInadditionsoilundergroundwatersourcescropsfallilldamageinturn

Cropsgrownwiththemusuallygrowtoofasttoberichinnutrition.Theymaylookbeautifulontheoutside,butinsidethereisusuallymorewaterthanessentialminerals,andtheyoftenhavelessflavouraswell.

Completethesentencesinthetables.Para.MainIdeaDetail1-2Pesticidescankillhelpful_________________Somepesticideshavebeen___________becauseofthe________________Cropsgrownwithchemicalfertilisersusually_____________tobefullof______________.bacteriaandinsectsprohibiteddamagegrowtoofastnutritionDTheproblemswithchemicalfarming

ChemicalFarmingagreatwaytofightcropdiseasesandincreaseproduction.1.Killthehelpfulbacteriaandinsects2.Food:lessnutrition,lessessentialminerals,andlessflavour.3.Causeillnessandcancerprosconssupportingevidence

Asanalternative,somefarmershaveswitchedtoorganicfarming,andmanycustomershaveturnedtoorganicfo