UNIT5WORKINGTHELANDUsingLanguage读写课(教学课件)高二英语（人教版2019选择性）

LeadinginSupposethatyouaregoingtoasupermarkettobuysomevegetablesforthedinneroffamilyreunion...1.What’sthedifferencebetweenthegingers/onions?2.Whydotheyenjoydifferentprices?Organicfarmingisnotpesticide,fertilizer,andothersyntheticgrowthagentsofproduction,butusemanureforfertilizerandotherorganicfertilizers.Whichoneisorganicfarming?××√chemicalpesticidesartificialfertilisersorganicfertilizer

ChemicalversusorganicfarmingFastReading01020304AWhatorganicfarmingisBWhyman-madechemicalsarestillusedinfarmingCOrganicmethodsforproducingrichsoil

DTheproblemswithchemicalfarmingpartmainideaDetail1-2Pesticidecankillhelpful

.somepesticideshavebeen

,becauseofthe

.Cropsgrownwithchemicalfertilisersusually

tobefullof

.3Manyorganicfarmersuse

asfertiliser.4Theyoften

grownineachfield

.Theyalsoplantcropsthatuse

ofthesoiltohelpkeepitrich.5Organicfarmingisnowherenearabletomeetthehigh

.DACBbacteriaandinsectsprohibiteddamagetheycausegrowtoofastnutritionnaturalwastefromanimalschangethekindofcropdemandforfoodaroundtheworlddifferentdepthseveryyearChemicalversusorganicfarmingDetailsReading2.Whatconcernsmanypeopleabouttheuseofpesticides?

Theirlong-termusecansometimesharmboththelandandpeople’shealth.Infact,somepesticideslikeDDThavebeenprohibitedinmostcountriesbecauseofthedamagetheycausetopeopleandtheenvironment.Asforchemicalfertilisers,cropsgrownwiththemusuallygrowtoofasttoberichinnutrition.Theymaylookbeautifulontheoutside,butinsidethereisusuallymorewaterthanessentialminerals,andtheyoftenhavelessflavouraswell.3.Whatisoneproblemwiththeuseofchemicalfertilizers?Cropsgrownwiththemusuallygrowtoofasttoberichinnutrition.mineraln.prohibitv.Asanalternative,somefarmershaveswitchedtoorganicfarming,andmanycustomershaveturnedtoorganicfoodwhentheyshopatthelocalgrocery.Organicfarmingissimplyfarmingwithoutusinganychemicals.Organicfarmersonkeepingtheirsoilrichandfreeofdiseasethroughnaturalmeans.Forexample,manyorganicfarmersusenaturalwastefromanimalsasfertiliser.Thismakesthesoilintheirfieldsricherinminerals.Italsokeepstheair,soil,water,andcropsfreeofchemicals.4.Whatisoneproblemwiththeuseofchemicalfertilizers?

Cropsgrownwiththemusuallygrowtoofasttoberichinnutrition.5.Howisorganicfarmingdifferentfromchemicalfarming?

Organicfarmingissimplyfarmingwithoutusinganychemicals.Organicfarmersfocusonkeepingtheirsoilrichandfreeofdiseasethroughnaturalmeans.Organicfarmersalsousemanyothermethodstoproducerichsoil.Theyoftenchangethekindofcropgrownineachfieldeveryyear.Forinstance,theymaygrowcornorwheatinafieldoneyear,andthengrowbeanstherethenext.Whydifferentcropsaregrownisbecausetheyputimportantmineralsbackintotheground,makingitreadyforthenextbatchofcrops.V-ing做结果状语（自然而然的结果）5.Whydoorganicfarmerschangethekindofcropgrowninafieldeveryyear?

Differentcropsaregrownbecausetheyputimportantmineralsbackintotheground,makingitreadyforthenextbatchofcrops.

Organicfarmersalsoplantdiversecropsthatusedifferentdepthsofsoiltohelpkeepitrich.Forexamplepeanutsgrowontheground’ssurface,butmanyothervegetablesputdowndeeproots.Thegoalofusingdifferentorganicfarmingmethodsistogrowgoodfoodwhileavoidingdamagetotheenvironmentortopeople’shealth.6.Whatisthegoalofusingorganicfarmingmethods?Doyouthinkitcanbereached?Whyorwhynot?

1）Thegoalofusingorganicfarmingmethodsistogrowgoodfoodwhileavoidingdamagetotheenvironmentortopeople’shealth.2）Yes,Ithinkthisgoalcanbereached.People’sawarenessofeatingorganicfoodsisincreasing.Andfarmersworkedforcenturieswithoutusinganykindsofchemicalsandwithoutharmingtheenvironment,andthefoodtheyproducedwasjustfine.

Somepeoplewouldprefertostoptheuseofman-madechemicalsinagricultureentirely.Whatkeepsthemfromdoingsoisthefactthatchemicalfarmingservesthehighdemandforfoodaroundtheworld.Organicfarmingisnowherenearabletomeetthatneed.Therefore,thereisstillalongwaytofindasuitablesolutionthatputssufficientfoodonthedinnertablewhilekeepingpeopleandtheenvironmentashealthyaspossible.7.Whycouldsomepeoplenotchoosebutuseman-madechemicalsinagriculture？Becausechemicalfarmingstillservesthehighdemandforfoodaroundtheworldand

organicfarmingisnowherenearabletomeettheneed.workingroupsoffourandfinishthefollowingtasks.(1)Theauthorusessomeconnectiveswhenexplainingdetails.Findandunderlinethem.Thenthinkaboutthewhattheyaddtothetext.Canyounamemoreconnectivesaccordingtodifferentclasses?connectivesinthetext:workingroupsoffourandfinishthefollowingtasks.(2)Findthesubjectclausesusedinthetextandunderlinethem.Thenmakeyourownsentencesonthethemeofchemicalfarmingandorganicfarming.①Overtime,however,whatsomescientistshavefoundisthattheirlong-termusecansometimesharmboththelandandpeople'shealth.②Whydifferentcropsaregrownisbecausetheyputimportantmineralsbackintotheground,makingitreadyforthenextbatchofcrops.③Whatkeepsthemfromdoingsoisthefactthatchemicalfarmingservesthehighdemandforfoodaroundtheworld.

DiscussthequestionsingroupsIstheauthorofthepassgefororagainstorganicfarming?Howdoyouknow?Whatotherdisadvantagesofchemicalfarmingdidtheauthornotlist?Howmightthefollowingitemsbeproblemsandhowimportantaretheyfororganicfarming?naturalanimalswasteusedasfertiliserhighercostofproducingfoodgreatereffortrequiredtofarmWhatotherdisadvantagesoforganicfarmingcanyouthinkof?2.Decidewhetheryourgroupsupportschemicalarmingororganicfarming.Comeupwiththreemainpointstosupportyouropinion,andthenaddatleastonedetailtosupporteachmainpoint.Completetheoutlinebelow.Topicsentence:Inmyopinion,

farmingispreferableto.farmingbecause

.Point1:.(Detail) .Point2: .

(Detail) .(Detail) .Point3: