B8Unit2Cloning.ppt

,Welcome,Lecturer:MrDayPengpaiMiddleSchool,cloning,Reading,Whereisitleadingus?,Book8unit2,Naturalcloneisonethatoccursinanaturalformofcloningwithouthumanhelp.,Man-madecloneisonethatisproducedthroughhumanintervention(介入).,Warmingup,Twokindsofclones:,Inpairs,lookatthesepicturesanddiscusswhichonesarenaturalclonesandwhichonesareman-made.Explainhowtheydiffer.,Discussion,Astrawberryplant,Thenewplantsthatgrowfromtherunnersareexactcopiesoftheoriginalplant.,Naturalclone,Growingnewplants,Man-madeclone,富贵竹插枝即活,Thegardenercutstheplant,andthenthecuttingproducesanothernewplant.,Man-madeclone,Twins,Theyarebornnaturallyandidenticalinsexandappearance.,Naturalclone,Shewasclonedwhiletheotherswerebornnaturally.Dollywasa_sheep.,cloned,HowdoesDollydifferfromothersheep?,Man-madeclone,In1996,asheepcalledDollywasborn.Itisthefirstmammaltobecloned.Itisconsideredtobethegreatestsuccessinthedevelopmentofcloning.,Thefollowingaresomephotosaboutcloning.Seehowmuchyouknowaboutit.,2001cloningcattle,2003Cloninghorse,cloningrabbits,2002cloningcats,2005cloningdogs,克隆的荧光小猪(左)和正常小猪(右),Skimming,Pleasereadthepassagequicklyandgetthemainidea,andthenfinishthefollowingexercisesingroups.,Themainideaofthetextis_A.animalcloningisveryvaluableandcanbenefittheworld.B.animalcloningcouldbemisusedbybadpeoplesoitmustbeforbiddenC.animalcloningiswelldevelopedbecauseDollythesheepwasborn.D.animalcloningraisedargumentsandscientistsarenotsureaboutitsfuture.,主旨大意,2.ThecloningofDollythesheepsucceededbecause_.A.itseasiertocloneasheepthanotheranimalsB.thescientistsweredeterminedandworkedhardwithpatienceC.thescientistswererewardedandgotlotsofmoneyD.manyotherattemptstoclonemammalsfailed,B,细枝末节,3.Whatispeoplesfearabouthumancloning.Whichofthefollowingiswrong?A.ClonedHitlerswoulddoharmtotheworld.B.Clonedpeoplemaybekilledatwillformedicalaid.C.Awomanwouldhavedifficultyrecognizingherrealhusband.D.Menwilldieoutbecauseawomancangivebirthtoababywithoutahusband.,4.Thesheepthatdonatedthesomaticcellmostprobablylived_years.A.3B.6C.9D.13,推理判断,5.Wecaninferfromthelastthreeparagraphsthat_.ThenormaldevelopmentofDollyhadnoeffectonthecloningofotherspecies.B.Dollysseriousdiseaseandfinaldeathdisturbedthewholeworld.C.Therewereargumentsaboutanimalcloningandconcernsaboutthefutureofcloning.D.Dollysuccessfullyclonedanewlambwiththehelpofcloningscientists.,Reading,Listentothetapeandfindoutthemainideaofeachparagraph.,Themainideaofeachparagraph.,awayofmakinganexactcopyofanotheranimalandplant.,problems,twomajor,effect,1.Cloningis_,2.Cloninghas_uses.,3.The_ofDolly.,4.The_ofDolly.,5.Peoplestocloning.,reaction,Cloningisawayofmakinganexactcopyofanotheranimalandplant.,Whatiscloning?,Ithappensbothin_andin_.Theycanbeclonedby_and_.,plants,animals,themselves,humans,Naturalclone,Man-madeclone,Para1,Thedefinitionofcloning,Firstly,commercialSecondly,research,Para2,Themajorusesandproceduresofcloning,Inthisparagraph,theword“straightforward”means_.A.uncomplicatedB.honestC.frankD.difficult,Atfirst,thefactthatDollydeveloped_inanaturalwaywas_.Later,thenews_Dollyhadbecomeseriouslyillwas_.Finally,theproblemthatoccurredtothescientistswasthataclonedanimallives_theoriginalone.,Para3,TheproblemsofDolly,normally,encouraging,that,aslongas/shorterthan/longerthan,disturbing,shorterthan,Theword“controversial”inpara4probablymeans:_.A.complicatedB.arguableC.importantD.traditional,Para4,TheimpactofDolly,Itsappearanceraisedandthemediaandpublicimagination.,astormofobjections,hadagreatimpacton,Trueorfalse:PeoplefearedthatClonedHitlerswoulddoharmtotheworld.2Alltheresearchintohumanbeingswillbeforbidden.3Somecountrieswillusecloninginawiseway.,Para5,Peoplesreactiontocloning,Manygovernmentsforbaderesearchintohumanbeings.,theauthordoesnotstateanypersonalopinionaboutcloning.,A.Objective(befair)B.Negative(beagainstit)C.Positive(beinfavorofit),Thewritersattitudetowardscloning,Because_,IntensiveReading,Fillinthechartabouttheadvantagesanddisadvantagesofcloning.,Collectinginformation,Cloningisbeneficialto,Itcanmakemoreprofitsfor,Wecouldusecloningtocure,Cloningcanhelpsave,Cloningcanprovideacopyofachildforacouple,Animalsclonesgetilland,Againstnature,Animalsclonesmaydeveloptheillnessof,Evilleadersmaywantto,Peopleareafraidthatscientistswillcreatethousandsofcopiesofthesameperson.,gardenersandfarmers,endangeredanimals,whosechildhasdied,dieyoung,olderanimals,clonethemselves,illness,humans,Practiceactivity:DebateAreyouinfavorofcloningoragainstcloning?Stateyourpointofviewonit.,For,Against,Homework:基础写作,写作情景：今天我们班同学讨论了有关克隆的问题。同学们热烈发表了评论和表达了自己的看法；他