选修8 unit2 cloning 公开课

Unit2Cloning,Inpairs,lookatthefourpicturesanddiscuss:whichonesarenaturalcloneswhichonesareman-made.Thinkabouthowtheydiffer.,Warmingup,Dollythesheep,man-madeclone,naturalclone,Astrawberryplant,Growingnewplant.,man-madeclone,Twins,naturalclone,Doyouwanttobecloned?Why？,Cloning:Whereisitleadingus?克隆,它将把我们引向何方?,exacttwincommercialstraightforwardundertakebreakthroughprocedurecarrier,adj.精确的；准确的n.双胞胎之一adj.成对的；成双的adj.商业的；贸易的adj.简单的；坦率的vt.着手；从事；承担n.突破n.程序；步骤；手续n.携带者；搬运工；运输工具,Wordspreview,castaltogetherarbitrarycorrectionobjectobjectionmediumthemediaobtain,vt.扔；投；掷adv.总共；完全地adj.任意的n.改正；纠正；修正vi.反对；不赞成n.不赞成；反对；异议n.媒介；手段；工具大众传播媒体vt.获得；赢得,Wordspreview,attainmoralconservativeforbidaccumulate,vt.获得；到达adj.道德(上)的；伦理的adj.保守的；守旧的vt.禁止；不准vt.积累；聚积,Wordspreview,Thetextismainlyaboutthe1._ofanimalcloningandthelifeofDollythesheep,aswellasthereasonswhycloningisstill2._.,controversial（有争议的）,procedure,Listenandreadthetextquicklyandcompleteitsmainidea.,2,Matchthemainideaofeachparagraph,Para1:A.Twomajorusesandtheprocedureofcloning.Para2:B.TheproblemsofDolly.Para3:C.TheeffectofDolly.Para4:D.PeoplesattitudetowardscloningPara5:E.Thedefinition（定义）ofcloning.,1、Thesheepthatdonatedthesomaticcellmostprobablylived_years.A.3B.6C.9D.12,细节理解,Carefulreading1,2、Theword“straightforward”inpara2probablymeans_.A.uncomplicatedB.arguableC.importantD.moral,词义猜测,推理判断,3、Fromthelastparagraphwecaninferthat_.A.cloningwillcometoanendbecauseoftheobjectionsB.clonedhumanbeingswillbeproducedinthenearfutureC.manycountrieswillusecloninginawisewayD.alltheresearchintohumanbeingswillbeforbidden,4、Whataboutthewritersattitudetowardcloninginthispassage?A.Thewriterisagainstcloning.B.Thewriterisinfavorofcloning.C.Thewriterdoesnotstateanypersonalopinionaboutcloning.D.Thewriterisinagreementwithcloning.,推理判断,Readthepassageandanswerthesequestions.（onPage12）,1.Whatarethetwomajorusesofcloning?2.Whyisiteasiertomakecommercialplantclonesthananimalclones?3.Whatwasthefirstclonefromanadultanimal?Atwhatagedidthisclonedie?4.Whyiscloningcontroversial（有争议的）insomecountries?,Carefulreading2,1.Whatarethetwomajorusesofcloning?,Thefirstuseistoproducecommercialquantitiesofplants.Thesecondistoresearchonnewplantsspeciesanddomedicalresearchonanimals.（Line5-7）,2.Whyisiteasiertomakecommercialplantclonesthananimalclones?,Cloningplantsisstraightforward,butthecloningofanimalsisverycomplicated（Line7）,3.Whatwasthefirstclonefromanadultanimal?Atwhatagedidthisclonedie?,4.Whyiscloningcontroversialinsomecountries?,ThefirstclonefromanadultanimalwasDollythesheep.Shediedin2003attheageofsixandahalf.,Cloningiscontroversialinsomecountriesformoralandreligiousreasons.,Doyouknowabout,theprocedureworksofasheep?,Aneggcell,Thenucleus,Theeggcell,Asomaticcell,Thenucleusistakenoutofthesomaticcell,Thenucleus,Theyarejoined,Thecelldividesandgrowsintoanembryo,Thecarrier,Putinto,Thelambisthecloneof,FemalesheepA,FemalesheepB,SheepB,FemalesheepC,genes,ProcedureofCloningaSheep,Practiceactivity:Areyouinfavorofthehumancloningoragainstit?Why？,正方,反方,Debate辩论：,TeamA:Iwouldliketosuggestthat_.soinmyopinion,humancloningisgood.TeamB:Idontagreewithyou.firstly,from