Book8 Unit 2 Cloning-Reading[原创]

.,Unit2cloning,.,.,Whichonesarenaturalclones?Whichonesareman-made?Howdotheydiffer.,Warmingup,.,Astrawberryplant,Naturalclone,.,Growingnewplants,man-madeclone,.,Naturalcloneisonethatoccursinanaturalformofcloningwithouthumanhelp.,Man-madecloneisonethatproducedthroughhumanintervention(介入).,.,Dollythesheep,Shewasclonedwhiletheotherswerebornnaturally.Inotherword,Dollywasa_sheep.,cloned,HowdoesDollydifferfromothersheep?,man-madeclone,.,Pre-readingaddyourquestionstothelist,QuestionlistaboutcloningWhatisaclone?Howisacloneproduced?Whatbenefitscanhumansgainfromcloning?Whatproblemsmayarisewhenhumansarecloned?5.6.,.,CLONING:WHEREISITLEADINGUS?,Predict:Towhichquestionfromourlisttheanswermightbefoundinthispassage?,.,Fastreading3mins,2.OutlinekeywordforeachparagraphPara.1_Para.2_Para.3_Para.4_Para.5_,ReadforMainideaofthepassage,Introduction/definition,Usesandbreakthrough,ProblemsofDolly,theImpactofcloning,Peoplesreactiontocloning,.,Themainideaofthetextis_A.animalcloningisveryvaluableandcanbenefittheworld.B.animalcloningcouldbemisusedbybadpeoplesoitmustbeforbiddenC.animalcloningiswelldevelopedbecauseDollythesheepwasborn.D.animalcloningraisedargumentsandscientistsarenotsureaboutitsfuture.,mainidea,.,1.Dollythesheep_.A.lookedexactlylikethesheepthatprovidestheegg.B.wastheexactcopyofthesheepthatprovidesthenucleus.C.lookedlikethesheepthatgavebirthtoit.D.hadthecharacteristicsofallthreesheep.,ReadingIISkimming(5ms),Choosetherightansweraccordingtothetext.,.,2.Itcanbeinferredfromthepassagethataclonedanimal_.A.usuallylivesaslongastheoriginaloneB.usuallyliveslongerthantheoriginaloneC.usuallyliveslongerthantheoriginaloneD.isusuallyashealthyastheoriginalone,3.Thesheepthatdonatedthesomaticcellmostprobablylived_years.A.3B.6C.9D.12,.,4.Whichofthefollowingisnotanadvantageofcloning?Cloningcanbeusedformedicalpurposes.Largequantitiesoffoodcanbeproducedbycloning.Cloningcanhelpkeepanimalsfrombecomingextinct.Famouspersonswhohavepassedawaycanbecloned.,5.Inthesecondparagraph,theword“straightforward”means_.A.uncomplicatedB.honestC.frankD.difficult,.,6.WhichofthefollowisNOTaproblemordangerofcloningaccordingtothetext?ClonedBinLadenswoulddoharmtotheworld.B.Animalclonesmaydeveloptheillnessofolderanimalsandmaydieyoungerthanthedonoranimals.C.Therearemoralobjectionstocloninghumanbeings.D.Toomuchcloningmayleadtothedestructionofthebalanceofnature.,.,Cloningisawayofmakinganexactcopyofanotheranimalandplant.,Whatiscloning?,Cloninghappensbothin_andin_.Theycanbeclonedby_and_.,plants,animals,themselves,humans,Naturalclone,Man-madeclone,Para1,listenandfilltheblanks,IntensiveReading,.,1.Howmanymajorusesdocloninghave?Firstly,commercialSecondly,research2.WhenwasthecloningofDollythesheepborn?Whydidthescientistssucceedincloningit?,Para2Readtogether,1996.Itwastheirdeterminationandpatiencethatpaidoff.,Themajorusesandbreakthroughofcloning,.,Atfirst,thefactthatDollydeveloped_inanaturalwaywas_.Later,thenews_shelivedforsixyears,halfthelengthofthelifeofthe_onewas_.Finally,theproblemthatoccurredtothescientistswasthataclonedanimallives_thantheoriginalone.,Para3,TheproblemsofDolly,normally,encouraging,orginal,that,disturbing,shorter,readfreely,1.Thefactthatsheseemedtodevelopnormallywasveryencouraging.2.ThencamethedisturbingnewsthatDollyhadbecomeseriouslyill.,Appositiveclause,.,Wecaninferfromthelastthreeparagraphsthat_.ThenormaldevelopmentofDollyhadnoeffectonthecloningofotherspecies.B.Dollysseriousdiseaseandfinaldeathdisturbedthewholeworld.C.Dollysuccessfullyclonedanewlambwiththehelpofcloningscientists.D.Therewereargumentsaboutanimalsaboutanimalcloningandconcernsaboutthefutureofcloning.,Para4&5,Theimpactandpeoplesreactiontocloning,.,theauthordoesnotstateanypersonalopinionaboutcloning.,A.Objective(befair)B.Negative(beagainstit)C.Positive(beinfavorofit),Thewritersattitudetowardscloning,Because_,.,DetailreadinganddiscussionFillinthechartusingtheinformationfromthetext.,develop,the,illnesses,produce,cures,illnesses,.,die,younger,produceplants,quality,for,sale,Evilleader,useful,newplantspecies,moralobjections,endangeredanimals,.,Practice:,RetelltheprocedureofcloningDollythesheep?,.,克隆羊诞生图示,.,.,1.Thefactisthattheyarebothexamplesofnaturalclones.2.Thequestionsthatconcernedallscientistswere:“Wouldthisbeamajordifficultyforallclonedanimals?”3.Itsuddenlyopenedeverybodyseyestothepossibilityofusingcloningtocureseriousillnesses,andevenproducinghumanbeings.4.Althoughatpresenthumaneggcellsandembryosneededforcloningresearcharedifficulttoobtain,newspaperswroteofevilleadershopingtoclonethemselvestoattaintheirambitions.,understandthesentences:,Predicativeclause,Attributiveclause,.,Practicediscussion(8ms),Chooseoneofthefollowingquestionstodiscussingroups.Theleaderofeachgroupshouldwritedowneverymembersopinion,thenthevolunteerswillshowyourgroupworktothewholeclass:,.,Questions:Doyousupporttheideaofproducinghumanembryos(胚胎)formedicalpurposes?Why?Doyouthinkitagoodideatouseclonedhumansfororgan(器官)transplants?Why?Doyouthinkaclonedhumanshouldhavehumanrights?Why?,.,Homework,1.创新作业本periodI2.FinishEx.1,2,3,Page12.,.,我国成功繁殖克隆兔体形要比普通兔大许多,2002年5月中旬成功地繁殖了一只胚胎细胞克隆兔。,.,第一只克隆宠物猫,克隆马及其“母亲兼姐姐”,.,2002年4月十六日美国第一头克隆牛“