高中英语 Unit2 Reading课件 新人教版选修8.ppt

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

2、wplantsman-madecloneTwinsNaturalcloneDollythesheepShewasclonedwhiletheotherswerebornnaturally.Dollywasa______sheep.clonedHowdoesDollydifferfromothersheep?man-madecloneReadingListentothetapeandfindoutthemainideaofeachparagraph.Cloningisawayofmakinganexactcopyofanotheranimalandplant.Whatisclonin

3、g?Ithappensbothin______andin_______.Theycanbeclonedby________and_______.plantsanimalsthemselveshumansNaturalcloneMan-madeclonePara1Thedefinitionofcloning1.Howmanymajorusesdocloninghave?Firstly,…commercial…Secondly,…research…2.WhenwasthecloningofDollythesheepborn?Para21996Themajorusesandprocedu

4、resofcloningAtfirst,thefactthatDollydeveloped______inanaturalwaywas__________.Later,thenews_____shelivedforsixyears,halfthelengthofthelifeofthe______onewas__________.Finally,theproblemthatoccurredtothescientistswasthataclonedanimallives_____________theoriginalone.Para3TheproblemsofDollynormal

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

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

7、______________________________________________IntensiveReadingFillinthechartonPage12usingtheinformationfromthetext.Whichiseasiertoclone,plantoranimal?Becausecloningplantsisstraightforward,butthecloningofanimalsisverycomplicated.Discussi