Unit5WorkingthelandUsingLanguageChemicalVersusOrganicFarming課件人教版高中英語選擇性

Unit5WorkingthelandChemicalversusOrganicfarming1.Tolearnthedifferencesbetweenchemicalandorganicfarming2.Tolearntoanalyzeadvantagesanddisadvantages.3.ToadvocateorganicfarmingaroundusLearningaimsLead-inDoyouknowwhattheyaredoing?gettingridofweeds/pestsfertilizingthesoilWhichkindoffarmingisbetter?1.Whatisthetextabout?ChemicalfarmingOrganicfarming

picturestitle2.Whattypeofwritingisit?A.Narration(記敘文)B.Exposition(說明文)C.Argumentation(議論文)

Pre-readingFastreadingMatchthemainideaswiththeparagraphsPara1-2Para3Para4Para5A.WhatorganicfarmingisB.Whyman-madechemicalsarestillusedinfarmingC.OrganicmethodsforproducingrichsoilD.TheproblemswithchemicaifarmingParagraphMainIdeaDetail1-2Pesticides?can?kill?helpful

.Some?pesticides?have?been

becauseofthe

.Crops?grown?with?chemical?fertilisers?usually

tobefullof

.3Many?organic?farmers?use

asfertiliser.DAbacteriaandinsectsprohibiteddamagetheycausegrowtoofastnutritionnaturalwastefromanimalsCarefulreadingParagraphMainIdeaDetail4They?often

grownineachfield

.They?also?plant?crops?that?use?

ofthesoiltohelpkeepitrich.5Organic?farming?is?nowhere?near?able?to?meet?the?high

.CBchangethekindofcropeveryyeardifferentdepthsdemandforfoodaroundtheworldComprehendingB2.Thefollowingaretheproblemsofchemicalfarmingexcept

.A.Pesticidescankillhelpfulbacteriaandinsects.B.Longtermuseofitwillharmthelandandourhealth.C.Cropswillgrowfasterandlookmorebeautiful.D.Itwillcausedamagetotheenvironment.C3.Whydoorganicfarmerschangethekindofcropgrownineachfieldeveryfewyears?A.Ithelpsputimportantmineralsbackintotheground.B.Itcanavoiddamagetotheenvironment.C.Itcanhelpincreaseoutput.D.Thewriterdidn’ttellus.A4.Whycan’twestoptheuseofman-madechemicalsinagricultureentirely?A.Organicfarmingcostusalotofmoney.B.Organicfarmingcanmeetpeople’sneed.C.Chemicalfarmingbroughtushugeprofit.D.Chemicalfarminghelpsservetheneedforfood.D5.Whatistheauthor’spurposeofwritingthepassage?A.Tocallonfarmerstoturntoorganicfarming.B.Tointroducesomegoodwaystomakethesoilrich.C.Tourgethegovernmenttostopusingpesticides.D.Togivesomeadviceonhowtoincreasetheoutputofcrops.ASummary

Chemicalpesticidesandartificialfertilisershavebeeninwidespreaduseinfarming1.______themiddleofthe20thcentury,butscientistsfoundthattheirlong-termusecansometimesdoharmtoboththelandandpeople'shealth.Inmost2.__________(country),somepesticideslikeDDThavebeenprohibitedbecauseofthedamage3._______(cause)topeopleandtheenvironment.(solve)theproblem,

somefarmershaveswitchedtoorganicfarming.Theyusenaturalwastefromanimalsasfertiliserinsteadofartificialfertilisers.sincecountriescausedTosolvedoingrichertheareputtoDiscussionWhatadvantagesanddisadvantagesdoorganicandchemicalfarminghave?chemicalfarmingorganicfarmingadvantagesdisadvantagesfightcropdiseaseincreaseproductionlowercostcropslookbeautifuloutside......goodfoodavoidingdamagetotheenvironmentortopeople'shealth......harmthelandharmpeople’shealthharmtheenvironmentcropsarelessinnutritio