人教版高中英语选修8Unit2Reading.pptx

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1、人教版高中英语选修人教版高中英语选修8Unit2ReadingUnit2ReadingCloning:Where Is It Cloning:Where Is It Leading Us?Leading Us?第1页/共48页exactcuttingtwinidenticalcommercialstraightforwardcomplicatedadj.精确的精确的;准确的准确的n.剪枝剪枝;剪报剪报;剪纸剪纸n.双胞胎之一双胞胎之一;孪生儿之一孪生儿之一adj.成对的成对的;成双的成双的adj.同一的同一的;一模一样的一模一样的adj.商业的商业的;贸易的贸易的adj.简单的简单的;直接的直

2、接的;坦率的坦率的adj.复杂的复杂的;难懂的难懂的Words andExpressions第2页/共48页undertakebreakthroughprocedurenucleussomaticembryocarriercastvt.着手着手;从事从事;承担承担n.突破突破n.程序程序;步骤步骤;手续手续n.原子核原子核;中心中心adj.躯体的躯体的;肉体的肉体的;细胞体的细胞体的n.胚胚;胚胎胚胎;萌芽时期萌芽时期n.携带者携带者;搬运工搬运工;运输工具运输工具vt.扔扔;投投;掷掷Words andExpressions第3页/共48页altogetherarbitraryfatecor

3、rectionobjectobjectionimpactmediumadv.总共总共;完全地完全地adj.任意的任意的n.命运命运;天命天命n.改正改正;纠正纠正;修正修正vi.反对反对;不赞成不赞成n.不赞成不赞成;反对反对;异议异议n.撞击撞击;冲击冲击;巨大的影响巨大的影响n.(plmedia)媒介媒介;手段手段;工具工具Words andExpressions第4页/共48页themediaobtainattainmoralconservativeforbidaccumulate大众传播媒体（如电视、大众传播媒体（如电视、报纸等）报纸等）vt.获得获得;赢得赢得vt.获得获得;到达（水

4、平、到达（水平、年龄、状况等）年龄、状况等）adj.道德（上）的道德（上）的;伦理的伦理的adj.保守的保守的;守旧的守旧的vt.禁止禁止;不准不准vt.&vi.积累积累;聚积聚积Words andExpressions第5页/共48页payoffcastdownobjecttoinfavourof沮丧；不愉快沮丧；不愉快得到好结果；取得成功；得到好结果；取得成功；偿清偿清赞成；支持赞成；支持反对反对Match第6页/共48页DollytheSheep第7页/共48页Discussion1.Howisacloneproduced?2.Whatbenefitscanhumansgainfromc

5、loning?3.Whatproblemsmayarisewhenhumansarecloned?第8页/共48页1.Tosummarizethemainideaofthepassage2.TotellhowDollywasproduced3.Toknowwhycloningisacontroversialissue第9页/共48页ABA:I think cloning is good for us.Because B:I think cloning is bad for us.Because Iscloninggoodorbadforus?Debate第10页/共48页Theseexpres

6、sionsmayhelp.Doyouthinkitiswiseto?Whatsyouropinionof?IthinkyoushouldIagreewithyouthatIwouldneveracceptImhappytoacceptaclonebutIwouldneveracceptacloneIdontmindbut第11页/共48页Skimming for general idea第12页/共48页 Whatsthemainideaofthetext?Whatsthemainideaofthetext?A.AnimalcloningisveryvaluableandcanA.Animal

7、cloningisveryvaluableandcanbenefittheworld.benefittheworld.B.ItexplainshowcloningworksinB.Itexplainshowcloningworksinthefirstsuccessfulclonedsheep,Dolly.thefirstsuccessfulclonedsheep,Dolly.C.ItillustratespeoplesviewsaboutC.ItillustratespeoplesviewsaboutDollysappearanceandcloningpeople.Dollysappearan

8、ceandcloningpeople.D.BothB&C.D.BothB&C.Choosethebestanswer.第13页/共48页WhatdoyouthinkisthewriterspointWhatdoyouthinkisthewriterspointofviewinthisreadingpassage?Isitinofviewinthisreadingpassage?Isitinfavourofcloningoragainstit?favourofcloningoragainstit?Ithinkthewriteris_Ithinkthewriteris_because_becaus

9、e_._.impartial he/shedoesnotstateanypersonalopinionaboutcloningFillintheblanks.P123第14页/共48页ProcedureofCloningaSheep第15页/共48页Scanning for specific information第16页/共48页1.Fromthefirstparagraphitcanbeinferredthat_.A.cloningisamanmadetechnologyB.cloningalwaysexistsaroundusC.cloningisverystrangetohumanbe

10、ingsD.cloningisonlyconductedinlaboratoriesChoosethebestanswer.第17页/共48页2.ThecloningofDollythesheepsucceeded2.ThecloningofDollythesheepsucceededbecause_.because_.A.itseasiertocloneasheepthanotherA.itseasiertocloneasheepthanotheranimalsanimalsB.thescientistsweredeterminedandB.thescientistsweredetermin

11、edandworkedhardwithpatienceworkedhardwithpatienceC.thescientistswererewardedandgotC.thescientistswererewardedandgotlotsofmoneylotsofmoneyD.manyotherattemptstocloneD.manyotherattemptstoclonemammalsfailedmammalsfailed第18页/共48页3.Dollythesheep_.3.Dollythesheep_.A.A.lookedexactlylikethesheepthatlookedexa

12、ctlylikethesheepthatprovidestheeggcellprovidestheeggcellB.B.wastheexactcopyofthesheepthatwastheexactcopyofthesheepthatprovidesthenucleusprovidesthenucleusC.lookedlikethesheepthatgavebirthtoC.lookedlikethesheepthatgavebirthtoititD.hadthecharacteristicsofallthreeD.hadthecharacteristicsofallthreesheeps

13、heep第19页/共48页4.Itcanbeinferredfromthepassagethat4.Itcanbeinferredfromthepassagethataclonedanimal_.aclonedanimal_.A.usuallylivesaslongastheoriginaloneA.usuallylivesaslongastheoriginaloneB.usuallyliveslongerthantheoriginaloneB.usuallyliveslongerthantheoriginaloneC.usuallydiesearlierthantheoriginaloneC

14、.usuallydiesearlierthantheoriginaloneD.isusuallyashealthyastheoriginaloneD.isusuallyashealthyastheoriginalone第20页/共48页Answerthesequestions.1Whatarethetwomajorusesofcloning?2Whyisiteasiertomakecommercialplantclonesthananimalclones?3Whatwasthefirstclonefromanadultanimal?Atwhatagedidthisclonedie?4Whyis

15、cloningcontroversialinsomecountries?P121第21页/共48页1.Whatarethetwomajorusesofcloning?2.Whyisiteasiertomakecommercialplantclonesthananimalclones?Thefirstuseistoproducecommercialquantitiesofplants.Thesecondistoresearchonnewplantspeciesanddomedicalresearchonanimals.Cloningplantsisstraightforward,butthecl

16、oningofanimalsisverycomplicated.第22页/共48页3.Whatwasthefirstclonefromanadultanimal?Atwhatagedidthisclonedie?4.Whyiscloningcontroversialinsomecountries?ThefirstclonefromanadultanimalwasDollythesheep.Shediedin2003.Cloningiscontroversialinsomecountriesformoralandreligiousreasons.第23页/共48页Fillintheblanks.

17、Definition Cloningisawaytoexactly(1)_anotherplantoranimal.(2)_cloningAnewplantisbornfromthe(3)_ofagrowingone.Inalaboratory,anewplantisgrownoutofasmallpartofanoriginalone.Aneggproducestwinsidenticalinsexandappearance.copyNaturalcutting第24页/共48页TwomajoradvantagesGardenersproduceplantsinlarge(4)_,which

18、willbringinmuchmoney.Itisofgreat(5)_forscientiststododifferentkindsofresearchonnewplantspeciesoranimals.quantities/numbersvalue第25页/共48页The(6)_ofcloningDollythesheep(7)_femalesheepareneeded.FromfemalesheepA,aneggcellistaken,withitsnucleusremoved.FromfemalesheepB,asomaticcellistaken,withanucleuspicke

19、d.TheeggcellfromSheepAandthenucleusfromSheepBarejoinedtogethertoproduceanembryo.TheembryoisputintofemalesheepCandmonthslatera(8)_isborn.procedure/process/stepsThreelamb第26页/共48页TwodisadvantagesItgotanillnesswhichismore(9)_toamucholderanimal.Itslifespanwasahalfshorter.Twodifferent(10)_Itispossibletou

20、secloningtocureillnesses.Itisunethicaltocloneahuman.appropriateopinions/views第27页/共48页FillinthechartusingtheinformationfromFillinthechartusingtheinformationfromthetext.Addonereasonofyourowninthetext.Addonereasonofyourownineachcolumn.eachcolumn.ProblemsordangersofcloningAdvantagesofcloningP122第28页/共4

21、8页ProblemsordangersofcloningAdvantagesofcloningAnimalclonesmaydeveloptheillnessesofolderanimals.Medicalcloningcouldproducecuresforseriousillnessesinhumans.Animalclonesmaydieyoungerthanthedonoranimals.Cloningplantscanproduceplantsofsimilarqualityforsale.第29页/共48页ProblemsordangersofcloningAdvantagesof

22、cloningEvilleadersmaywanttoclonethemselves.Cloningplantscanbeusefulforresearchonnewplantspecies.Therearemoralobjectionstocloninghumanbeings.Cloningcanhelpsaveendangeredanimals.第30页/共48页Careful reading重难点句式分析重难点句式分析第31页/共48页1.Italsohappensinanimalswhentwinsidenticalinsexandappearanceareproducedfromth

23、esameoriginalegg.时间状语从时间状语从句句这种现象也发生在动物身上，从同一个原这种现象也发生在动物身上，从同一个原生卵子产生性别和相貌相同的双胞胎也是生卵子产生性别和相貌相同的双胞胎也是克隆。克隆。originalegg原生卵子原生卵子定语定语修饰修饰twinsidentical同一的；完全相同的同一的；完全相同的第32页/共48页TranslationThetworoomswerevirtuallyidentical.1.这两个房间几乎一模一样。这两个房间几乎一模一样。Whenhewasachildhewasalwaystryingoutnewideas.2.他小时候总是尝试

24、一些新的想法。他小时候总是尝试一些新的想法。第33页/共48页2.Althoughatpresenthumaneggcellsandembryosneededforcloningresearcharedifficulttoobtain,newspaperswroteofevilleadershopingtoclonethemselvestoattaintheirambitions.让步状语从让步状语从句句尽管目前供克隆研究的人体细胞和胚胎还尽管目前供克隆研究的人体细胞和胚胎还很难得到，但是报纸报道说，有些邪恶头很难得到，但是报纸报道说，有些邪恶头目希望把自己克隆出来以实现他们的野心。目希望把自

25、己克隆出来以实现他们的野心。attain实现；获得实现；获得v-ed短语修饰短语修饰humaneggcellsandembryoswriteofvt.写写,记述记述第34页/共48页TranslationHehasattainedthehighestgradeinhismusicexams.1.他在他在音乐考试音乐考试中得了最高分。中得了最高分。Hesrathershy,althoughhesnotasbadasheusedtobe.2.他很他很腼腆腼腆，但是比以前要好一些了，但是比以前要好一些了。第35页/共48页Cloningisawayof_ofanotheranimalorplant.

26、Ithastwomajoruses.Oneistoproducecommercialquantitiesofplants;_isforresearchonnewplantspeciesandformedicalresearchonanimals.Cloningplantsisstraightforward_cloninganimalsisdifficulttoundertake.However,scientistshardwork_in1996_thecloningofDollythesheep.Thoughitwasencouraging_thesheepseemedtogrownormal

27、ly,itdiedafterashortlifeofonlysixandahalfyearsintheworld.theothermakinganexactcopywhilewiththatpaidoffCompletethepassagewithproperwords,whichwillhelpyouretellthetext.第36页/共48页Asaresult,it_(puzzle)allscientistswithdifferentquestions.Besides,theappearanceofDollyraisedastormof_(object)andpublicimaginat

28、ion._gotpeopletothinkaboutthepossibilitiesof_(use)clonestocureseriousdiseasesandeventoproducehumanbeings.However,somegovernmentsbecamemorenervousandconservativeandtheyforbaderesearch_humancloning.Otherscontinuedtoaccumulateevidenceofabundantmedicalaid_couldbeprovidedbycloning.puzzledobjectionsItusin

29、gwhich/thatinto第37页/共48页Lookatthesepicturesbelowfirst.第38页/共48页第39页/共48页第40页/共48页“Holy great mother of God,Ive been cloned!”第41页/共48页1.克隆技术现在还不成熟克隆技术现在还不成熟,克克隆人可能有很多先天性生隆人可能有很多先天性生理缺陷。理缺陷。2.克隆人的身份难以认定克隆人的身份难以认定,他他们与被克隆者之间的关系们与被克隆者之间的关系无法纳入现有的伦理体系。无法纳入现有的伦理体系。反对克隆人反对克隆人Someopinionsaboutclone第42页/共48页

30、3.3.克隆技术有可能被滥用克隆技术有可能被滥用克隆技术有可能被滥用克隆技术有可能被滥用,成为恐怖成为恐怖成为恐怖成为恐怖分子的工具。分子的工具。分子的工具。分子的工具。4.4.从生物多样性上来说从生物多样性上来说从生物多样性上来说从生物多样性上来说,大量基因结大量基因结大量基因结大量基因结构完全相同的克隆人构完全相同的克隆人构完全相同的克隆人构完全相同的克隆人,可能诱发新可能诱发新可能诱发新可能诱发新型疾病的广泛传播型疾病的广泛传播型疾病的广泛传播型疾病的广泛传播,对人类的生存对人类的生存对人类的生存对人类的生存不利。不利。不利。不利。第43页/共48页1.“1.“不让我们克隆人不让我们克隆

31、人不让我们克隆人不让我们克隆人,就是不让我们修正就是不让我们修正就是不让我们修正就是不让我们修正我们的错误我们的错误我们的错误我们的错误,人类历史难道能够这样人类历史难道能够这样人类历史难道能够这样人类历史难道能够这样构造吗？构造吗？构造吗？构造吗？”纽约时报书评纽约时报书评纽约时报书评纽约时报书评4.“4.“人体商业化是人类经济活动中无与伦人体商业化是人类经济活动中无与伦人体商业化是人类经济活动中无与伦人体商业化是人类经济活动中无与伦比的成就比的成就比的成就比的成就,毫无疑问毫无疑问毫无疑问毫无疑问,克隆技术的出现克隆技术的出现克隆技术的出现克隆技术的出现将为世人创造一个最为广泛和深远的将为

32、世人创造一个最为广泛和深远的将为世人创造一个最为广泛和深远的将为世人创造一个最为广泛和深远的市场。市场。市场。市场。”英国英国英国英国经济学家经济学家经济学家经济学家杂志。杂志。杂志。杂志。支持克隆支持克隆人人Whataboutyou?Itisaquestionworth thinking about.第44页/共48页Now two minutes to test your spelling.1.English-Chinesetwin,breakthrough,procedure,carrier,correction,objection,medium2.Chinese-English商业的，

33、伦理的，从事，到达，禁止，商业的，伦理的，从事，到达，禁止，简单的，保守的，总共，积累，获得，简单的，保守的，总共，积累，获得，任意的，不赞成，扔任意的，不赞成，扔When finished,exchange your papers to see who does the best.第45页/共48页Things I can doEvaluationIknowwhatcloningis.5 43 2 1Icangraspthemainideaofthereadingpassage.5 43 2 1IcanretellhowDollythesheepwasproduced.5 43 2 1Ica

34、napplysomevocabularyfromthereadingpassagetomyfuturewriting.5 43 2 1Icanunderstandthesentencepatternsandwritenewsentenceswiththem.5 43 2 1Ineedmorepracticein_.第46页/共48页Homeworkobject,payoff,accumulate,attain,castdown,undertake,infavourof,breakthrough,objectto,obtain.3.Readthearticlesinpage1ofLearning English.Themoreyouread,thefasterandbetteryoullunderstand.Whenfinishedreading,writeasummaryin100wordsorso.1.Readthepassageagainandreviewthenewwordsandexpressions.2.发挥想象，连词成文发挥想象，连词成文(50-100字字).第47页/共48页感谢您的观看！感谢您的观看！第48页/共48页