高中英语 unit 2 cloning课件 新人教版选修8.ppt

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1、Unit2CloningCloningisawayofmakinganexact_____ofanotheranimalorplant.WhatisCloning?copyWhatisthedifferenceamongthem?NaturalcloneMan-madeclonecloneNaturalcloneisonethatoccursinanaturalformofcloningwithouthumanhelp.Man-madecloneisonethatproducedthroughhumanintervention(介入).DollythesheepShe

2、wasclonedwhiletheotherswerebornnaturally.Dollywasa______sheep.clonedHowdoesDollydifferfromothersheep?man-madecloneSkimthefollowingpassageandmatchtheparagraphwiththecorrectsentence.Para1A.TheproblemsofDollyPara2B.ThetwomajorusesofcloningPara3C.TheattitudestowardscloningPara4D.Thedefiniti

3、onofcloningPara5E.TheeffectofcloninginsocietyCloningisawayofmakinganexactcopyofanotheranimalandplant.Whatiscloning?Ithappensbothin______andin_______.Theycanbeclonedby________and_______.plantsanimalsthemselveshumansNaturalcloneMan-madeclonePara1Thedefinitionofcloning1.Howmanymajorusesdoc

4、loninghave?Firstly,…commercial…Secondly,…research…2.WhenwasthecloningofDollythesheepborn?Para21996ThemajorusesandproceduresofcloningAtfirst,thefactthatDollydeveloped______inanaturalwaywas__________.Later,thenews_____shelivedforsixyears,halfthelengthofthelifeofthe______onewas__________.F

5、inally,theproblemthatoccurredtothescientistswasthataclonedanimallives_____________theoriginalone.Para3TheproblemsofDollynormallyencouragingorginalthataslongas/shorterthan/longerthandisturbingshorterthanTheword“controversial”inparagraph4probablymeans____________.A.complicatedB.arguableC

6、.importantPara4TheimpactofDollyTrueorfalse:1PeoplefearedthatClonedHitlerswoulddoharmtotheworld.2Alltheresearchintohumanbeingswillbeforbidden.3Somecountrieswillusecloninginawiseway.Para5People’sreactiontocloningManygovernmentsforbadereserchintohumanbeings.theauthordoesnotstateanypersonal

7、opinionaboutcloning.A.Objective(befair)B.Negative(beagainstit)C.Positive(beinfavorofit)Thewriter’sattitudetowardscloningBecause_________________________________________________________________Theimportanteventsinanimalcloninghistory2001cloningcattle2003Cloninghorse2002cloningra