Unit2WorkingtheLandIntegratedskills课件高中英语牛津译林版（2020）选修第一册

Unit2Workingtheland

Integratedskills(I)Organicfarmingistheprocessofgrowingplantsorproducewithoutusingindustrialchemicals.Chemicalfarmingistheprocessofgrowingplantsandproduceusingchemicalpesticidesandfertilizers.Organicfoodisgrownwithouttheuseofsynthetic(人工合成)

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

1

Weknowthatmostvegetablesinthemarketarefromchemicalfarming,whilethevegetablesIgroware

fromorganicfarming.LeadinginStep

1

Weknowthatmostvegetablesinthemarketarefromchemicalfarming.Whatdoyouknowaboutit?Step

2

1.Readforthemainideaofeachparagraph.Step

2

1.Readforthemainideaofeachparagraph.Para1Para2Para3Para4IntroductionAdvantagesofchemicalfarmingDisadvantagesofchemicalfarmingConclusionStep

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2.Readforthedetails.(1)Whydofarmersusechemicals?(2)Whatarethedisadvantagesofusingchemicalsinfarming?Becausetheuseofchemicalsbringsimmediateresults,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)Howaboutyourattitudetochemicalfarming?ObjectiveApprovingIndifferentNeutralOpposedStep

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1.Underlinekeywordsbeforelistening.

B1Step

3

B21.Payattentiontothesubtitlesinthetableandknowaboutthemainpointsitwilltalkabout.Step

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2.Listenfornote-taking.foodquality

recyclingwastetastesbetterworkwithnatureknowledgeandskillscropyieldsListeningStep

3

ListeningStep

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B:Well,betterecologicalpracticeshelpmaintainsafehabitatsfornature’sownpestcontrolorganisms.Also,

bynotusingchemicalfertilizers,soilmicroorganismscanfreelybreakdownorganicmaterialstoreleasenutrientsintothesoil.Thus,organicfarmingtriestoworkwithnature,notagainstit.A:Thatsoundsgreat!

Itseemstherearequitealotofbenefits.

Arethereanydownsidesoffarminginthisway?B:Yes,thereare.

Organicfarmingrequiresspcializedknowledgeandskills.

As

organicfarmers,

wemustbeveryknowledgeableaboutnature,thecropswearegrowing,

aswellasnaturalmethodsforcontrollingpestsandmanagingsoilnutrients.A:Doorganicfamingmethodsaffectyourcropyields?B:Yes.

Withouttheuseofchemicals,

wemaylosemorecropstodiseasesorpests.

However,

ourmainfocusisnotjustonproducinghighyieldsbutongrowingqualityfood,whileprotectingthenaturalenvironment.A:MrZhao,thanksforenlighteningmeaboutorganicfarming.GroupworkStep

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Workingroupstofinishthistask.

Introduceorganicfarmingandexpressyourviewsaboutit.

GroupworkStep

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Organicfarmingaimstoreducefarming’soverallimpactontheenvironmentandimprovefoodqualityaswellasconsumer’shealth.Besides,

itfocusesonrecyclingwasteandavoidsusingchemicals.Ofcourse,ithassomeadvantages,includingproducingfoodthatischemical-freeandtastesbetterandtryingtoworkwithnatureinsteadofbeingagainstit.However,ithassomeadvantages,too.

Foronething,itrequiresspecializedknowledgeandskills.Foranother,itaffectsfarmers’cropyields.

Inmyopinion,organicfarmingmaynotproducelargeharvestsorquickandreliableplantgrowthlikechemicalfarmingdoes,butitdoesprovideoptionswithconsiderablebenefitsforpeopleandtheplanet.Sowe

believeitisinourbestintereststochooseorganicfarmingoverchemicalfarming.HomeworkSearchformoreinformationonlineabout