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1、Unit 2 Working the landUnit 2 Working the landUsing languageUsing languageWordspreviewchemicalproductionbacteriapestnutritionmineraladj.化学的；关于化学的化学的；关于化学的n.生产；制造生产；制造n.细菌细菌n.害虫；害兽；害鸟害虫；害兽；害鸟n.营养；滋养；食物营养；滋养；食物n.矿物；矿石矿物；矿石discoveryfocussoilreducerootn.发现；发觉发现；发觉n.焦点；中心点焦点；中心点vt.集中；聚焦集中；聚焦n.土壤土壤vt.减少；减
2、缩减少；减缩n.根；根源根；根源Wordspreviewskimunderlinesummarycommentvt.浏览；略读浏览；略读vt.画底线标出；强调画底线标出；强调n.总结；摘要；概要总结；摘要；概要n.评论；议论评论；议论vi.&vt.表达意见表达意见;做出评论做出评论WordspreviewExpressionspreviewbuildupleadtofocusonkeepfreefrom/of逐渐增强逐渐增强;建立建立;开发开发导致导致;造成造成(后果后果)集中集中(注意力，精力等注意力，精力等)于于使使免受免受(影响，伤害等影响，伤害等)；使使不含不含(有害物有害物) Org
3、anic FarmingWhat are genetically-modified foods? The term GM foods or GMOs (genetically-modified organisms) is most commonly used to refer to crop plants created for human or animal consumption using the latest molecular biology techniques. What are some of the advantages of GM foods? The world popu
4、lation has topped 6 billion people and is predicted to double in the next 50 years. Ensuring an adequate food supply for this booming population is going to be a major challenge in the years to come. GM foods promise to meet this need in a number of ways:1).pest resistance 2).disease resistance 3).c
5、old tolerance 4).drought tolerance/salinity tolerance5).nutritionWhat are some of the criticisms against GM foods? Most concerns about GM foods fall into three categories: environmental hazards, human health risks, and economic concerns.Read and answer:Whatisthemainideaofthispassage?Thispassagetells
6、ussomethingaboutorganicfarming.Itmeansgrowingcropswithoutchemicalfertilizerswhichdamagethesoil.Theorganicfarmerskeepthesoilrichandhealthyinseveralways.1Whyarechemicalfertilizerssopopularinfarmingtoday?2Whatproblemscanbecausedbyusingchemicalfertilizers?3Whatisorganicfarming?4Whatisthemainreasonforusi
7、ngorganicfarmingmethods?Readthepassageandanswerthefollowingquestions.1Whyarechemicalfertilizerssopopularinfarmingtoday?Theyareagreatwaytostopcropdiseaseandincreaseproduction.2Whatproblemscanbecausedbyusingchemicalfertilizers?Theycandamagethelandbykillinghelpfulbacteriaandpetsandbystayinginthegrounda
8、ndundergroundwaterforalongtime,Theydamagepeopleshealthbybuildingupintheirbodiesandleadingtocancerorotherillnesses.3Whatisorganicfarming?4Whatisthemainreasonforusingorganicfarmingmethods?Organicfarmingmeansgrowingcropswithoutusinganychemicals.Themainreasonforusingorganicfarmingmethodsistogrowgoodfood
9、andtoavoiddamagingtheenvironmentorpeopleshealth.Findandwritedownthemethodsandadvantagesinthepassage.MethodsoforganicfarmingAdvantagesofmethodsFarmersusenaturalwastefromanimals.Thismakesthesoilricherinmineralsandsomorefertile.MethodsoforganicfarmingAdvantagesofmethods1Farmersusenaturalwastefromanimal
10、s.1Thismakesthesoilricherinmineralsandsomorefertile.2Farmersoftenchangethekindofcropineachfieldeveryfewyears.2Changingthecropsrenewsthemineralsinthesoilandhelpsitbecomerichandhealthy.MethodsoforganicfarmingAdvantagesofmethods3Farmersplantcropswithdifferentlengthsofroots.3Thisusesdifferentlevelsofsoi
11、l.4Farmerssometimesplantgrassbetweencropsandleaveitintheground.4Thispreventswindorwaterfromcarryingawaysoilandactsasanaturalfertilizer.Language points1Thesechemicalsinthefoodsupplybuildupinpeoplesbodiesovertime.buildup增强增强;建立；开发建立；开发Hardworkingconditionsbuildupcharacter.艰苦的工作条件能磨练人的性格。艰苦的工作条件能磨练人的性格
12、。2Manyofthesechemicalscanleadtocancerorotherillnesses.leadto:导致；造成导致；造成Toomuchworkandtoolittlerestoftenleadtoillness.过量的工作和过少的休息会引起疾病。过量的工作和过少的休息会引起疾病。AllroadsleadtoRome.条条大道通罗马。条条大道通罗马。3Theyfocusonkeepingtheirsoilrichandfreeofdisease.focuson:集中集中(注意力，精力等）于注意力，精力等）于Youshouldfocusyourattentiononyourw
13、ork.把注意力集中在你的工作上。把注意力集中在你的工作上。 Olympus:Focusonlife.奥林巴斯：瞄准生活。奥林巴斯：瞄准生活。4Thisalsokeepstheair,soil,waterandcropsfreefromchemicals.keepsfreefrom/of:使使免受（影免受（影响，伤害登）；使不含（有害物）响，伤害登）；使不含（有害物）keepfrom:阻止阻止;妨碍妨碍 Ihopeyouwillkeepfromdoinganythingrash.我希望你不要做出任何鲁莽的事情来。我希望你不要做出任何鲁莽的事情来。Listening chemicalfertil
14、izercowdung用化学肥料和有机肥料的区别用化学肥料和有机肥料的区别:Thepossiblebadeffectsofchemicalfertilizersonthefruitandvegetablesthatweeattoday.Asyoulistentothisdialogue,keepinmindwhatyouhavejustreadaboutchemicalfertilizers.Whatisthemaintopicoftheconversation?Listentothedialogueasecondtime.Decideifthefollowingstatementsaretr
15、ueorfalse,accordingtotheconversation.Giveyourreasons.1PaulthinksthatCarrieisnottellinghimthetruth.2Usingchemicalfertilizersalwaysmakesvegetablesemptyinside.TrueFalse3Todaysfruitisnotashealthyforpeopleasfruitfiftyyearsago.4Eatingmorevegetablesmightnotalwaysbegoodforus.5Alloftodaysvegetableslookhealth
16、ybutinfactarenot.FalseTrueTrueListeningtext WHATSWRONGWITHTHEVEGETABLES?Girl:Hey,Paul,listentothisamagazinearticleaboutafarmerwhousedtoomuchchemicalfertilizeronhisfields.Whenhisvegetableswerepicked,theywereallfoundtobeempty!BOY:Empty?Yourejoking,Carriethatcantbetrue!Girl:Ididntbelieveiteither!Thisar
17、ticlesaysthiscanhappensometimeswithvegetableslikecucumbers,carrotsandpumpkins.Thischemicalfertilizermakesthevegetablesgrowfasttolookbigandbeautiful,buttheyreemptyinside!BOY:Youknow,Ivenoticedthatsometimesmymumbuyscarrotsfromthesupermarketthathavebigholesdownthecenter.Iguessthatmustbefromusingchemica
18、lfertilizers!GIRL:Yeah,thatswhatthemagazinesays!Themainpointofthearticle,though,isntaboutholesinourvegetables.Itstalkingaboutwhythefruitandvegetablesweeattodayarentasnutritiousastheonesourgrandparentsate.BOY:What?Mymumisalwaystellingmetoeatmorevegetables,becausetheyregoodforme!GIRL:Yeah,Iknowmymothe
19、rsaysthatsamething!Anditstrue-theyaregoodforusbuttheproblemisthattheyarenthealthyenough!Allthesechemicalfertilizerstheykilloffboththebadandthegoodthingsintheground.Thegrounddoesnthaveenoughvitaminsandmineralsanymoretohelpcropsgrowhealthy.BOY:Soifourfruitandvegetablesweregrownwithchemicalfertilizers,
20、theymightlookhealthy,butprobablyarentreallyhealthy?Iguesswevegottostopusingsomanychemicalfertilizerstogrowourfood!Writeasummaryofthetextfollowingtheprocedureonpage15.HomeworkHomeworkThankyou.Thankyou.9、静夜四无邻，荒居旧业贫。2024/8/252024/8/25Sunday, August 25, 202410、雨中黄叶树，灯下白头人。2024/8/252024/8/252024/8/258/2
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