人教版高二英语选修.ppt

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1、Unit2cloningReadingTheimportanteventsinanimalcloninghistoryIn1952tadpole(蝌蚪）wascloned.ItisthefirstanimaltobeclonedIn1963,anAsiancarp(鲤鱼）wascloned.Tenyearslater,aChinesescientistnamedTongdizhouclonedaEuropeancarp.1978年7月25日,世界上第一个试管婴儿路易丝·布朗在英国出生路易丝·布朗现已33岁In1996,asheepcalledDolleywasborn.Itisthe

2、firstmammaltobecloned.Itisconsideredtobethegreatestsuccessinthedevelopmentofcloning.Amacaque（猕猴）wasclonedin2000.Laterscientistsclonedmanymonkeys.2000年·人类近亲被克隆美国俄勒冈的研究者用与克隆多利羊截然不同的方法克隆出猴子TetraMules(骡子）havenoabilitytogivebirthtoababy.Amulewasclonedin2003.Itisthefirstanimalwhichlackfecundity(生育能力

3、）tobecloned.2001年·克隆人被提上日程Cloning:Whereisitleadingus?CloningUnit2Reading:Whatdoyouwanttoknowaboutcloning?1.2.3.……Skimming（略读）:matchthemainideawitheachparagraph（段落大意连连看）A.Twomajorusesandtheprocedureofcloning.B.Cloningisawayofmakinganexactcopyofanotheranimalorplant.C.TheeffectofDollythesheep.D.It

4、isforbiddentoclonehumanbeings.E.Theproblemofdollythesheep.Para.1Para.2Para.3Para.4Para.5_______________(meaning)_________________________Skimthefollowingpassageandmatchtheparagraphwiththecorrectsentence.Para1A.TheproblemsofDollyPara2B.ThetwomajorusesofcloningPara3C.TheattitudestowardscloningPar

5、a4D.ThedefinitionofcloningPara5E.TheeffectofcloninginsocietyScanthetexttofindouttheanswerstothefollowingquestions.Scanning1.Dollythesheep______.A.lookedexactlylikethesheepthatprovidestheeggB.wastheexactcopyofthesheepthatprovidesthenucleusC.lookedlikethesheepthatgavebirthtoitD.hadthecharacterist

6、icsofallthreesheepChoosethebestanswer.2.Thesheepthatdonatedthesomaticcellmostprobablylived________years.A.3B.6C.9D.133.Whichofthefollowingisnotanadvantageofcloning?Cloningcanbeusedformedicinepurposes.Largequantitiesofplantscanbeproducedbycloning.Cloningcanhelpkeepanimalsfrombecomingextinct.Famo

7、uspersonswhohavepassedawaycanbecloned.4.Themainideaofthetext:A.Animalcloningisveryvaluableandcanbenefittheworld.B.Animalcloningcouldbemisusedbybadpeoplesoitmustbeforbidden.C.AnimalcloningiswelldevelopedbecauseDollythesheepwasborn.