Unit-2-Cloning-公开课PPT课件下载推荐.ppt

Unit-2-Cloning-公开课PPT课件下载推荐.ppt

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Whatisaclone?

@#@Acloneisananimalorplantproducednaturallyorartificially（人造人造）fromthecellsofanotheranimalorplantandisexactlythesameasit.cloneNaturalcloneMan-madecloneNaturalcloneisonethatoccursinanaturalformofcloningwithouthumanhelp.Man-madecloneisonethatproducedthroughhumanintervention（介入介入）.Lookatthefollowingpicturesanddiscusswhichonesarenaturalclonesandwhichonesareman-made.DiscussionAstrawberryplantGrowingnewplantsTwinsCactus（仙人掌）仙人掌）Naturalclonependulumorchid（吊兰吊兰）DollythesheepShewasclonedwhiletheotherswerebornnaturally.Dollywasa_sheep.clonedHowdoesDollydifferfromothersheep?

@#@ReadingListentothetapeandfindoutthemainideaofeachparagraph.Para1Para2Para3Para4Para5BThedefinitionofcloningCThemajorusesandproceduresofcloningATheproblemsofDollyETheimpactofDollyDPeoplesreactiontocloningBCAED定义定义Cloningisawayofmakinganexactcopyofanotheranimalandplant.Whatiscloning?

@#@Ithappensbothin_andin_.Theycanbeclonedby_and_.plantsanimalsthemselveshumansNaturalcloneMan-madeclonePara1Thedefinitionofcloning1.Howmanymajorusesdocloninghave?

@#@Firstly,commercialSecondly,research2.WhenwasthecloningofDollythesheepborn?

@#@Para21996ThemajorusesandproceduresofcloningAtfirst,thefactthatDollydeveloped_inanaturalwaywas_.Later,thenewsthatshelivedforsixyears,halfthelengthofthelifeofthe_onewas_.Finally,theproblemthatoccurredtothescientistswasthataclonedanimallives_theoriginalone.Para3TheproblemsofDollynormallyencouragingorginalaslongas/shorterthan/longerthandisturbingshorterthanTheword“controversial”inpara4probablymeans_.A.complicatedB.arguableC.importantPara4TheimpactofDollyTrueorfalse:

@#@1PeoplefearedthatClonedHitlerwoulddoharmtotheworld.2Alltheresearchintohumanbeingswillbeforbidden.3Somecountrieswillusecloninginawiseway.Para5PeoplesreactiontocloningManygovernmentsforbaderesearchintohumanbeings.Whichiseasiertoclone,plantoranimal?

@#@Becausecloningplantsisstraightforward,butthecloningofanimalsisverycomplicated.Thinkingtheauthordoesnotstateanypersonalopinionaboutcloning.A.Objective（befair）B.Negative（beagainstit）C.Positive（beinfavorofit）ThewritersattitudetowardscloningBecause_Somephrases1.payoff2.castdown3.haveanimpactonTwoyearsofbusinessschoolreallypaidoff.Hehasbeenverymuchcastdownbyhisfailureintheexamination.Thefilmhadquiteanimpactonher.Whatroledotheunderlinedclausesplayinthesentences?

@#@（划线部分充当什么句子成分划线部分充当什么句子成分）1.Thefactisthatthesearebothexamplesofnaturalclones.2.Thefactthatsheseemedtodevelopnormallywasveryencouraging.语法专攻语法专攻:

@#@作表语作表语作同位语作同位语3.ThencamethedisturbingnewsthatDollyhadbecomeseriouslyill.4.However,scientistsstillwonderwhethercloningwillhelporharmusandwhereitisleadingus.作同位语作同位语作宾语作宾语HomeworkDiscussandtranslatetheprocedureofcloningDollythesheepintoChinese.AstrawberryplantThenewplantsthatgrowfromtherunnersareexactcopiesoftheoriginalplant.一株草莓依靠它沿地一株草莓依靠它沿地“爬走爬走”的匍匐茎的匍匐茎,一一年内就能长出数百株草莓苗年内就能长出数百株草莓苗富贵竹插枝即活富贵竹插枝即活Thegardenershouldcuttheplant,thenthecuttingsproduceanothernewplant.TwinsTheyarebornnaturallyandidenticalinsexandappearance.Hitler