高中英语 unit 2 cloning课件 新人教版选修8

Unit2Cloning,Cloningisawayofmakinganexact_ofanotheranimalorplant.,WhatisCloning?,copy,Whatisthedifferenceamongthem?,clone,Naturalcloneisonethatoccursinanaturalformofcloningwithouthumanhelp.,Man-madecloneisonethatproducedthroughhumanintervention(介入).,Dollythesheep,Shewasclonedwhiletheotherswerebornnaturally.Dollywasa_sheep.,cloned,HowdoesDollydifferfromothersheep?,man-madeclone,Skimthefollowingpassageandmatchtheparagraphwiththecorrectsentence.,Para1A.TheproblemsofDollyPara2B.ThetwomajorusesofcloningPara3C.TheattitudestowardscloningPara4D.ThedefinitionofcloningPara5E.Theeffectofcloninginsociety,Cloningisawayofmakinganexactcopyofanotheranimalandplant.,Whatiscloning?,Ithappensbothin_andin_.Theycanbeclonedby_and_.,plants,animals,themselves,humans,Naturalclone,Man-madeclone,Para1,Thedefinitionofcloning,1.Howmanymajorusesdocloninghave?Firstly,commercialSecondly,research2.WhenwasthecloningofDollythesheepborn?,Para2,1996,Themajorusesandproceduresofcloning,Atfirst,thefactthatDollydeveloped_inanaturalwaywas_.Later,thenews_shelivedforsixyears,halfthelengthofthelifeofthe_onewas_.Finally,theproblemthatoccurredtothescientistswasthataclonedanimallives_theoriginalone.,Para3,TheproblemsofDolly,normally,encouraging,orginal,that,aslongas/shorterthan/longerthan,disturbing,shorterthan,Theword“controversial”inparagraph4probablymeans_.A.complicatedB.arguableC.important,Para4,TheimpactofDolly,Trueorfalse:1PeoplefearedthatClonedHitlerswoulddoharmtotheworld.2Alltheresearchintohumanbeingswillbeforbidden.3Somecountrieswillusecloninginawiseway.,Para5,Peoplesreactiontocloning,Manygovernmentsforbadereserchintohumanbeings.,theauthordoesnotstateanypersonalopinionaboutcloning.,A.Objective(befair)B.Negative(beagainstit)C.Positive(beinfavorofit),Thewritersattitudetowardscloning,Because_,Theimportanteventsinanimalcloninghistory,2001cloningcattle,2003Cloninghorse,2002cloningrabbits,2002cloningcats,1.Themainideaofthetextis_.A.animalcloningisveryvaluableandcanbenefittheworld.B.animalcloningiswelldevelopedbecauseDollythesheepwasborn.C.animalcloningcouldbemisusedbybadpeoplesoitmustbeforbiddenD.animalcloningraisedargumentsandscientistsarenotsureaboutitsfuture.,2.Itcanbeinferredfromthepassagethataclonedanimal_theoriginalone.A.usuallylivesaslongasB.usuallyliveslongerthanC.usuallydiesearlierthanD.isusuallyashealthyas,3.Inthesecondparagraph,theword“straightforward”means_.uncomplicatedhonestfrankdifficult,4.Wecaninferfromthelastthreeparagraphsthat_.Dollysseriousdiseaseandfinaldeathdisturbedthewholeworld.DollysuccessfullyclonedanewlambwiththehelpofcloningscientistthenormaldevelopmentofDollyhadnoeffectonthecloningofotherspeciestherewereargumentsaboutanimalcloningandconcernsaboutthefutureofcloning,5.Whatisthewritersattitudetowardcloninginthispassage?Thewriterisagainstcloning.Thewriterisinfavorofcloning.Thewriterisinagreementwithcloning.Thewriterdoesnotstateanypersonalopinionaboutcloning.,6.Dollythesheep_.A.lookedexactlylikethesheepthatprovidestheeggB.wastheexactcopyofthesheepthatprovidesthenucleusC.lookedlikethesheepthatgavebirthtoitD.hadthecharacteristicsofallthreesheep,7.Thesheepthatdonatedthesomaticcellmostprobablylived_years.A.3B.6C.9D.13,8.Whichofthefollowingisnotanadvantageofcloning?Cloningcanbeusedformedicinepurposes.Largequantitiesoffoodcanbeproducedbycloning.Cloningcanhelpkeepanimalsfrombecomingextinct.Famouspersonwhohavepassedawaycanbecloned.,9.WhichofthefollowingstatementsaboutcloningisNOTtrueaccordingtotext?A.Cloningissomethingthathasbeendevelopedquiterecently.B.Twinsthatlookexactlythesameareoriginallyfromthesameegg.C.Cloningisusedbygardenerstomakemoremoney.D.Animalcloningismuchmoredifficultthanplantcloning.,10.ThecloningofDollythesheepsucceededbecause_.A.itseasiertocloneasheepthanotheranimalsB.thescientistsweredeterminedandworkedhardwithpatienceC.thescientistswererewardedandgotlotsofmoneyD.manyotherattemptstoclonemammalsfailed,Thedeterminationandpatienceofthescientistswasrewarded/paidoff.,Trueoffalse:,Fourfemalesheepparticipateinthecloningofanewsheep.Electricityisneededintheprocedure.SheepBprovidesasomaticcellfortheclone.ThelambistheexactcopyofsheepA.,(F),（T）,（F）,(T),5.Cloningmeansmakingacopyofananimaloraplant.6.Gardenerscanmakealotofmoneybycloningplants.()7.Cloninganimalsisascomplicatedascloningplants.(F)8.Dollythesheepwasthefirstsuccessfulcloneofamammal.()9.Naturalcloneshappeninanimalsaswellasinplants.(),（F）,T,T,T,Animalclonesmaydeveloptheillnessesofolderanimals.,Medicalcloningcouldproducecuresforseriousdegenerativeillnessesinhumans.,Animalclonesmaydieyoungerthanthedonoranimals.,Cloningplantscanproduceplantsofsimilarqualityforsale.,Evilleadersmaywanttoclonethemselves.,Cloningplantscanbeusefulforresearchonnewplantspecies.,Therearemoralobjectionstocloninghumanbeings.,Cloningcanhelpsaveendangeredanimals.,Fillinthechartusingtheinformationfromthetext.,makinganexactcopy,commercial,straightforward,breakthrough,plantsspecies,animals,Dollythesheep,complicated,Asacoinhastwosides,everythinghastwoaspects.Ononehand,ifcloningisusedinaco