新人教版选修八unit2cloning-reading[课件].ppt

《新人教版选修八unit2cloning-reading[课件].ppt》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、cloningReadingNaturalcloneisonethatoccursinanaturalformofcloningwithouthumanhelp.Man-madecloneisonethatproducedthroughhumanintervention(介入).Inpairs,lookatthesepicturesanddiscusswhichonesarenaturalclonesandwhichonesareman-made.Explainhowtheydiffer.DiscussionAstrawberryplantNaturalcloneGrowi

2、ngnewplantsman-madecloneTwinsNaturalcloneDollythesheepShewasclonedwhiletheotherswerebornnaturally.Dollywasa______sheep.clonedHowdoesDollydifferfromothersheep?man-madecloneReadingListentothetapeandfindoutthemainideaofeachparagraph.Cloningisawayofmakinganexactcopyofanotheranimalandplant.What

3、iscloning?Ithappensbothin______andin_______.Theycanbeclonedby________and_______.plantsanimalsthemselveshumansNaturalcloneMan-madeclonePara1Thedefinitionofcloning1.Howmanymajorusesdocloninghave?Firstly,…commercial…Secondly,…research…2.WhenwasthecloningofDollythesheepborn?Para21996Themajorus

4、esandproceduresofcloningAtfirst,thefactthatDollydeveloped______inanaturalwaywas__________.Later,thenews_____shelivedforsixyears,halfthelengthofthelifeofthe______onewas__________.Finally,theproblemthatoccurredtothescientistswasthataclonedanimallives_____________theoriginalone.Para3Theprobl

5、emsofDollynormallyencouragingorginalthataslongas/shorterthan/longerthandisturbingshorterthanTheword“controversial”inpara4probablymeans____________.A.complicatedB.arguableC.importantPara4TheimpactofDollyTrueorfalse:1PeoplefearedthatClonedHitlerswoulddoharmtotheworld.2Alltheresearchintohuman

6、beingswillbeforbidden.3Somecountrieswillusecloninginawiseway.Para5People’sreactiontocloningManygovernmentsforbadereserchintohumanbeings.theauthordoesnotstateanypersonalopinionaboutcloning.A.Objective(befair)B.Negative(beagainstit)C.Positive(beinfavorofit)Thewriter’sattitudetowardscloningBe

7、cause_________________________________________________________________IntensiveReadingFillinthechartonPage12usingtheinformationfromthetext.Whichiseasiertoclone,plantoranimal?Becausecloningplantsisstraightforward,butthecloningofanimalsisverycomplicated.Discussi