Unit2WorkingthelandIntegratedskills课件高中英语译林版（2020）选修第一册

Unit2WorkingthelandIntegratedskills(I)汇报日期LeadinginStep

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Weknowthatmostvegetablesinthemarketarefromchemicalfarming.Whatdoyouknowaboutit?Organicfarmingistheprocessofgrowingplantsorproducewithoutusingindustrialchemicals.Chemicalfarmingistheprocessofgrowingplantsandproduceusingchemicalpesticidesandfertilizers.Organicfoodisgrownwithouttheuseofsynthetic(人工合成)

chemicals,suchashuman-madepesticidesandfertilizers,anddoesnotcontaingeneticallymodifiedorganisms(GMOs).Organicfoodsincludefreshproduce,meats,anddairyproductsaswellasprocessedfoodssuchascrackers,drinks,andfrozenmeals.Step

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Readforthemainideaofeachparagraph.Para1Para2Para3Para4IntroductionAdvantagesofchemicalfarmingDisadvantagesofchemicalfarmingConclusionStep

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2.Readforthedetails.(1)Whydofarmersusechemicals(2)WhatarethedisadvantagesofusingchemicalsinfarmingBecausetheuseofchemicalsbringsimmediateresults,intermsofbothplantgrowthandprotection.Theynotonlypollutetheenvironment,butalsoaffectalllivingorganismsincludinghumans.Step

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3.Summarizetheadvantagesanddisadvantagesofchemicalfarming.AdvantagesDisadvantagesItpollutestheenvironmentaswellasaffectsalllivingorganisms;itleadstoarangeofdiseasesandcausesseveredamagetohumans.Itallowsplantstogrowfasterthantheywouldwithorganicfertilizers;iteasilyprotectscropsfrompests.Step

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4.Readforattitude.(1)What’stheauthor’sattitudetochemicalfarming(2)HowaboutyourattitudetochemicalfarmingObjectiveApprovingIndifferentNeutralOpposedListeningSarahisinterviewingafarmeraboutorganicfarming.Listenandfinishthefollowingexercises.Listentotheinterviewandchoosethebestanswer.Circlethelettersofthecorrectoptions.P23B11WhydoorganiccropstastebetteraTheyrecycleanimalwaste.bTheyreducechemicals.cTheyproducemorenatural,healthycompounds.2WhathappenswhensoilmicroorganismsbreakdownorganicmaterialsaPestsarekilled.bNutrientsgointothesoil.cAnimalhabitatsaresafelymaintained.3HowdoesSarahfeelabouttheinterviewaSheisgladthatshehaslearntalotfromtheinterview.bSheisworriedthatorganicfarmingmightaffectcropyields.cSheisgratefultoMrZhaoforhiseffortsatorganicfarming.Listentotheinterviewagainandcompletethenotesbelow.P23B2Basicintroduction

•Aimingtoreducefarming’soverallimpactontheenvironmentandimprove(1)_________________aswellasconsumers’health•Focusingon(2)_________________andavoidingusingchemicalsAdvantagesoforganicfarming

•Producingfoodthatischemical-freeand(3)____________•Tryingto(4)_________________,notagainstitDisadvantagesoforganicfarming

•Requiringspecialized(5)___________________•Affectingfarmers’(6)_________________

foodqualityrecyclingwaste

tastesbetter

workwithnature

cropyields

knowledgeandskillsInpairs,discusstheadvantagesanddisadvantagesofchemicalandorganicfarming.Usetheideasinthechartbelowtohelpyou.P24Step

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Theadvantagesoforganicfarmingareobvious.Evidenceshowsthatorganicallygrowncropsproducenaturalcompoundswhichimprovetheirflavour.Inaddition,byavoidingtheuseofchemicals,organicfarmingproducesfoodthatishealthierforconsumers.Organicfarmingisalsomoreeco-friendlybyworkingwithnature,notagainstit.Forinstance,farmersrecycleanimalwasteintonaturalfertilizer,sosoilmicroorganismshelpaddnutrientstothesoil.Consequently,theenvironmentisprotectedfromchemicalpollution,ecosystemsstayunaffectedandconsumersbenefitfromeatingchemical-freeproduce.Incontrast,chemicalfarmingcancausedamagetowater,soilandecosystems.Organicfarming:farmingthewaynatureintendsOrganicfarming:farmingthewaynatureintendsStep

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Itistruethatorganicfarmingisnoteasyandpresentssomechallengestofarmers,likeproducingloweryields.Ontheotherhand,consumersmayneedtopaymorefororganicallygrownfood.Butoverthelongterm,thebenefitsoforganicfarmingexceedthoseofchemicalfarming.Toconclude,organicfarmingmaynotproducelargeharvestsorquickandreliableplantgrowthlikechemicalfarmingdoes,butitdoesprovideoptionswithconsiderablebenefitsforpeopleandtheplanet.Ibelieveitisinourbestintereststochooseorganicfarmingoverchemicalfarming.Chemicalfarming:thefarmer’shelpinghandStep

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Chemicalfarminghasmanyadvantages.Ithelpsfarmersproducehigheryieldsmorequicklythanorganicfarming.Aschemicalfertilizersarefast-acting,poorsoilrapidlybecomesenrichedwithnutrients,allowingplantstogrowfaster.Inaddition,chemicalpesticidesandherbicidesensurethatcropsstayhealthyandprotectedfrompestsanddiseases.Incontrast,bynotusingchemicals,organicfarmersmaylosemorecropstodiseasesandpests.Step

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Thereisnodenyingthatchemicalfarmingisnotperfect.Chemicalsdocausedamagetotheenvironmentandalsoaffecthumanhealth.However,farmerscanmakeeveryefforttominimizethedamagetheydobycuttingdownontheuseofchemicals.Forinstance,theadventofprecisionfarmingmakesitpossibletohavemoreaccuratemeasurementsofchemicals,grea