Unit2WorkbookReadingandWriting课件-高中英语人教版选择性

Reviewwordsbreedv.培育(动植物)endangeredadj.濒危的organn.(人体或动植物的)器官tissuen.(动植物的细胞)组织；纸巾；面巾纸transplantv.(使)迁移；移植

n.(器官、皮肤等的)移植moraladj.基于道德的n.道德准则(标准)Cloning:Whereisitleadingus?Whatisaclone?Acloneisananimalorplantproducednaturallyorartificiallyfromthecellsofanotheranimalorplantandisexactlythesameasit.Skimming

Thetextappearstobeafeaturearticlefromanewspaper,meantforgeneralaudiencestointroducecloningandraisetheirconcerns.专题文章Match

themainideaofeachparagraph.431256A.PossibleusesofcloninginthefutureB.WhethercloningisgoodorbadC.CurrentusesofcloningD.WhatcloningisE.HowcloningasheepworksF.MoralandethicalconcernsaboutcloningCarefulReadingCarefulReadingAnswerthequestionsusinginformationfromthetext.1.Whatarethetwoexamplesofnaturalclones?2.Whatarethetwomainusesforclonestoday?3.Whatfuturemedicalusesdoescloninghave?4.Whymightcloninganextinctanimalbeabadidea?5.Whydomanypeopleworryaboutclonedfood?Lookatthesepicturesanddiscusswhichonesarenaturalclonesandwhichonesareman-madeclones.GrowingnewplantsTwinsMan-madeclonesoccursinnaturewithouthumanhelp

isproducedthroughhumanintervention(介入)DollythesheepAstrawberryplantNaturalclonesSentenceAnalysisSentenceAnalysisadj.简单的；易懂的；不复杂的while:表示对比关系，连接两个并列句。Helikespop,whileIpreferclassicalmusic.他喜欢流行音乐，而我更喜欢古典音乐。straightforwardSentenceAnalysisWhiletherearetechnicalissuesthatneedtobeworkedthroughtomakewidespreadcloningpossible,thebiggestconcernsaremoral.while:意为“虽然；尽管”，通常位于句首，引导让步状语从句。WhileIamwillingtohelpyou,Iwon’tbeavailablethisafternoon.除了连词，while还可以用作名词，意为“一段时间；一会儿”。BeforeIgotobed,Iusuallydrinkaglassofmilkandreadforawhile.SentenceAnalysisSentenceAnalysisSentenceAnalysisWiththeadvancesofscientificresearch,cloningwillhaveseveralmajorusesinthefuture.Foronething,itcouldbeusedtobreedanimalspecieswhichareendangered,orevenbringbackspecieswhicharenowextinct.Foranother,itcouldbeusedtogrowhumanorgansortissueinanimals,whichcouldbeusedforhumanorgantransplantsormedicaltreatments.Finally,cloningcouldbeusedtobreedanimalsthatwillprovideuswithhigherqualitymeat,milk,oreggs.Underlinethesignpostwordsorphrasesinthisparagraph.SentenceAnalysisOvertheyears,manyscientistsfailedintheirattempts(clone)animals,buttheirdeterminationandpatiencepaidoffin1996withabreakthrough---thecloningofDollythesheep.paidofftocloneSentenceAnalysisattempttodosth.努力尝试或企图做某事(常暗含不成功)managetodosth.=succeedindoingsth.设法完成(指经过努力达到了目的)trytodosth.尽力做某事(不包含成功与否)attempt,manage&trypayoff取得成功;得到回报;偿清Believeinyourself,allyoureffortswillpayoffsomeday.相信你自己,你所有的努力将来有一天会有所回报。I'll

payoffmydebtsfirst.我要先还清我的债务。payoffpayback还钱,偿还,报复payfor支付...;为...付款;为...付出代价用介词填空：1.I'llpayyou______nextweek.2.Hehadtoworkpart-timetopay______hiseducation.3.Heryearsofhardworkpaid______.backforoffWhatisthefirstclonedanimalintheworld?Dollythesheep.HowwasDollycloned?TheprocedureofcloningDollyDiscussion

1.Areyouinfavorofcloningoragainstcloning?Whatisyouropinion?2.Iscloningpeopleagoodthingorabadthing?HomeworkWriteashortpassageabouttheadvantagesanddisadvantagesofcloning.ProsBehelpfultotreatsomediseasesOfferanalternativeforthosewhohavelosttheirbelovedonesBeofhelpforfurtherresearchorcloningbreakthroughs…ConsPosesathreattoethicalmoralsGoagainsttheruleofnatureandmightresultindefectedproductsBeb