河北省新乐市第一中学高中英语 Unit2 Working the landUsing language课件 新人教版必修4.ppt

unit2workingthelandusinglanguage chemicalproductionbacteriapestnutritionmineral adj 化学的 关于化学的n 生产 制造n 细菌n 害虫 害兽 害鸟n 营养 滋养 食物n 矿物 矿石 discoveryfocussoilreduceroot n 发现 发觉n 焦点 中心点vt 集中 聚焦n 土壤vt 减少 减缩n 根 根源 skimunderlinesummarycomment vt 浏览 略读vt 画底线标出 强调n 总结 摘要 概要n 评论 议论vi 做出评论 buildupleadtofocusonkeep freefrom of 逐渐增强 建立 开发导致 造成 后果 集中 注意力 精力等 于使 免受 影响 伤害等 使 不含 有害物 organicfarming whataregenetically modifiedfoods thetermgmfoodsorgmos genetically modifiedorganisms ismostcommonlyusedtorefertocropplantscreatedforhumanoranimalconsumptionusingthelatestmolecularbiologytechniques whataresomeoftheadvantagesofgmfoods theworldpopulationhastopped6billionpeopleandispredictedtodoubleinthenext50years ensuringanadequatefoodsupplyforthisboomingpopulationisgoingtobeamajorchallengeintheyearstocome gmfoodspromisetomeetthisneedinanumberofways 1 pestresistance2 diseaseresistance3 coldtolerance4 droughttolerance salinitytolerance5 nutrition whataresomeofthecriticismsagainstgmfoods mostconcernsaboutgmfoodsfallintothreecategories environmentalhazards humanhealthrisks andeconomicconcerns readandanswer whatisthemainideaofthispassage thispassagetellsussomethingaboutorganicfarming itmeansgrowingcropswithoutchemicalfertilizerswhichdamagethesoil theorganicfarmerskeepthesoilrichandhealthyinseveralways 1whyarechemicalfertilizerssopopularinfarmingtoday 2whatproblemscanbecausedbyusingchemicalfertilizers 3whatisorganicfarming 4whatisthemainreasonforusingorganicfarmingmethods readthepassageandanswerthefollowingquestions 1whyarechemicalfertilizerssopopularinfarmingtoday theyareagreatwaytostopcropdiseaseandincreaseproduction 2whatproblemscanbecausedbyusingchemicalfertilizers theycandamagethelandbykillinghelpfulbacteriaandpetsandbystayinginthegroundandundergroundwaterforalongtime theydamagepeople shealthbybuildingupintheirbodiesandleadingtocancerorotherillnesses 3whatisorganicfarming 4whatisthemainreasonforusingorganicfarmingmethods organicfarmingmeansgrowingcropswithoutusinganychemicals themainreasonforusingorganicfarmingmethodsistogrowgoodfoodandtoavoiddamagingtheenvironmentorpeople shealth findandwritedownthemethodsandadvantagesinthepassage languagepoints 1thesechemicalsinthefoodsupplybuildupinpeople sbodiesovertime buildup增强 建立 开发hardworkingconditionsbuildupcharacter 艰苦的工作条件能磨练人的性格 2manyofthesechemicalscanleadtocancerorotherillnesses leadto 导致 造成toomuchworkandtoolittlerestoftenleadtoillness 过量的工作和过少的休息会引起疾病 allroadsleadtorome 条条大道通罗马 3theyfocusonkeepingtheirsoilrichandfreeofdisease focuson 集中 注意力 精力等 于youshouldfocusyourattentiononyourwork 把注意力集中在你的工作上 olympus focusonlife 奥林巴斯 瞄准生活 4thisalsokeepstheair soil waterandcropsfreefromchemicals keeps freefrom of 使 免受 影响 伤害登 使不含 有害物 keepfrom 阻止 妨碍ihopeyouwillkeepfromdoinganythingrash 我希望你不要做出任何鲁莽的事情来 listening chemicalfertilizer cowdung 用化学肥料和有机肥料的区别 thepossiblebadeffectsofchemicalfertilizersonthefruitandvegetablesthatweeattoday asyoulistentothisdialogue keepinmindwhatyouhavejustreadaboutchemicalfertilizers whatisthemaintopicoftheconversation listentothedialogueasecondtime decideifthefollowingstatementsaretrueorfalse accordingtotheconversation giveyourreasons 1paulthinksthatcarrieisnottellinghimthetruth 2usingchemicalfertilizersalwaysmakesvegetablesemptyinside true false 3today sfruitisnotashealthyforpeopleasfruitfiftyyearsago 4eatingmorevegetablesmightnotalwaysbegoodforus 5alloftoday svegetableslookhealthybutinfactarenot false true true listeningtext what swrongwiththevegetables girl hey paul listentothis amagazinearticleaboutafarmerwhousedtoomuchchemicalfertilizeronhisfields whenhisvegetableswerepicked theywereallfoundtobeempty boy empty you rejoking carrie thatcan tbetrue girl ididn tbelieveiteither thisarticlesaysthiscanhappensometimeswithvegetableslikecucumbers carrotsandpumpkins thischemicalfertilizermakesthevegetablesgrowfasttolookbigandbeautiful butthey reemptyinside boy youknow i venoticedthatsometimesmymumbuyscarrotsfromthesupermarketthathavebigholesdownthecenter iguessthatmustbefromusingchemicalfertilizers girl yeah that swhatthemagazinesays themainpointofthearticle though isn taboutholesinourvegetables it stalkingaboutwhythefruitandvegetablesweeattodayaren tasnutritiousastheonesourgrandparentsate boy what mymumisalwaystellingmetoeatmorevegetables becausethey regoodforme girl yeah iknow mymothersaysthatsamething andit strue theyaregoodforus buttheproblemisthattheyaren thealthyenough allthesechemicalfertilizers theykilloffboththebadandthegoodthingsintheground thegrounddoesn thaveenoughvitaminsandmineralsanymoretohelpcropsgrowhealthy b