新人教版高中英语选修八第二单元第五课时 Reading PPT课件.ppt

英语：Unit2CloningReading课件（人教版选修8）,cloning,Reading,Naturalcloneisonethatoccursinanaturalformofcloningwithouthumanhelp.,Man-madecloneisonethatproducedthroughhumanintervention(介入).,Inpairs,lookatthesepicturesanddiscusswhichonesarenaturalclonesandwhichonesareman-made.Explainhowtheydiffer.,Discussion,Astrawberryplant,Naturalclone,Growingnewplants,man-madeclone,Twins,Naturalclone,Dollythesheep,Shewasclonedwhiletheotherswerebornnaturally.Dollywasa_sheep.,cloned,HowdoesDollydifferfromothersheep?,man-madeclone,Reading,Listentothetapeandfindoutthemainideaofeachparagraph.,Cloningisawayofmakinganexactcopyofanotheranimalandplant.,Whatiscloning?,Ithappensbothin_andin_.Theycanbeclonedby_and_.,plants,animals,themselves,humans,Naturalclone,Man-madeclone,Para1,Thedefinitionofcloning,1.Howmanymajorusesdocloninghave?Firstly,commercialSecondly,research2.WhenwasthecloningofDollythesheepborn?,Para2,1996,Themajorusesandproceduresofcloning,Atfirst,thefactthatDollydeveloped_inanaturalwaywas_.Later,thenews_shelivedforsixyears,halfthelengthofthelifeofthe_onewas_.Finally,theproblemthatoccurredtothescientistswasthataclonedanimallives_theoriginalone.,Para3,TheproblemsofDolly,normally,encouraging,orginal,that,aslongas/shorterthan/longerthan,disturbing,shorterthan,Theword“controversial”inpara4probablymeans_.A.complicatedB.arguableC.important,Para4,TheimpactofDolly,Trueorfalse:1PeoplefearedthatClonedHitlerswoulddoharmtotheworld.2Alltheresearchintohumanbeingswillbeforbidden.3Somecountrieswillusecloninginawiseway.,Para5,Peoplesreactiontocloning,Manygovernmentsforbadereserchintohumanbeings.,theauthordoesnotstateanypersonalopinionaboutcloning.,A.Objective(befair)B.Negative(beagainstit)C.Positive(beinfavorofit),Thewritersattitudetowardscloning,Because_,IntensiveReading,FillinthechartonPage12usingtheinformationfromthetext.,Whichiseasiertoclone,plantoranimal?,Becausecloningplantsisstraightforward,butthecloningofanimalsisverycomplicated.,Discussion,Homework,1.TranslatetheprocedureofcloningDollythesheepintoChinese.2.FinishEx.1,2,3,Page12.,1996cloningsheeps,2001cloningcattle,我国成功繁殖克隆兔体形要比普通兔大许多,2002年5月中旬成功地繁殖了一只胚胎细胞克隆兔。,2002cloningcats,第一只克隆宠物猫,克隆马及其“母亲兼姐姐”,2002年4月十六日美国第一头克隆牛“艾米”产下牛犊喜作妈咪,2005cloningdogs,克隆的荧光小猪(左)和正常小猪(右),Astrawberryplant,Thenewplantsthatgrowfromtherunnersareexactcopiesoftheoriginalplant.,一株草莓依靠它沿地“爬走”的匍匐茎,一年内就能长出数百株草莓苗,富贵竹插枝即活,Th