高一英语Modern agriculture课件2.ppt

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1、WelcomeUnit19ModernAgricultureDiscussthefollowingquestionswithyoupartner.1、Lookatthepicturesandcomparetraditionalandmodernfarming.2、Whataretheadvantagesanddisadvantagesofeachway?3、Whatotherchangeshavehappenedonfarmsinthelast100years?agriculturefarmirrigationfoodcropfieldplantsplainfarminggr

2、ainfarmerfertilizerseedproducecountrysidelandarableland3、Whatotherchangeshavehappenedonfarmsinthelast100years?Overthelast100yearstherehavebeensomechangesonfarmsandinagriculture:Theuseofmachines,theuseofchemicalfertilizers,theuseofinsectkillers,theuseoffoodsupplementsinanimalfeed,thegrowthof

3、thefarms(biggerfarms),doingtheworkwithworkerswhoarenotpartoffamily,growingdifferentcrops,etc.Scanning:Q1:WhatisthebiggestproblemtoChinesefarmers?Q2:WhatdoesGMmean?Chinaisacountrywiththelargestpopulationintheworld,butonlysevenpercentofthelandcanbeusedforfarming.“G”standsfor“genetically”fromt

4、heworld“genes”.“M”standsfor“modified”,whichmeans“changed”.SkimmingReadthewholetext.Findoutthetopicsentenceineachparagraph.Para.1:ForthousandsofyearstraditionalagricultureinChinadidnotchangeverymuch.Para.5:Anothertechniquetriestocreateplantsthatproducemoreandbiggerfruit.Para.4:Usingthelatest

5、technologies,Chinesescientistsgrowvegetablesingreenhouses.Para.3:Notonlyisfoodproductionimportantbutalsotakingcareoftheenvironment.Para.2:Overtime,manyfarmingtechniqueshavebeenmodernised.Para.6:Thetomatoisoneofnearly4,500differentplantsthataregeneticallymodified.1.Howmuchdoesarablelandtakeu

6、pinChina?2.Howmanywaysarementionedtomakethelandproducemore?3.Whatdoesnewtechniquesmean?4.Whendidscientiststarttodevelopnewtechniques?5.Howmanyunusualwaysarementionedtodealwiththeshortageofarableland?Questions:ThemostimportanttechnologicalchangesinagricultureinChinainhistory:1950s-1980s1980s

7、-presentTheuseofmachines,egtractorsTheuseofelectricpumpsforirrigationTheuseofchemicalfertilisersTheuseofinsectkillersTheuseofspecialseedbedsTheuseofgreenhousesTomakevegetablesbiggerorbetterTochangevegetablessotheycangrowonpoorsoilKnowledgefromabroadTradi