大学英语听说教程第三册UNIT 8

Unit8TroublingoverGeneticDoublingListening：listenandunderstandthemainideaofthepassageSpeaking:beabletoretellthemainideaofthepassageorthestory.TeachingObjectivesLeading-inIntensiveListeningPracticeSupplementaryListeningTeachingContentsExtensiveListeningPracticeLeading-in:SomeinformationaboutanimalcloningDolly(aclonedsheep)OnJuly5th,1996,the1stclonedmammalDollywasborninBritain.ClonedPigswereborn.In1998,fiftyclonedmicewereborninHawaiiintheUS.In1998,aclonedoxwasborn.OnJan.13,2000,the1stclonedmonkey—TetrawasbornintheUS.Leading-in:ListeningandSpeakingonPage123Nowyouwillhearapassage.Takenoteswhilelisteningandthenuseyournotestofinishthetasks.Task1:Fillinthefollowingtableaccordingtowhatyouhear.ReasonsforcloningReasonsagainstcloning1.Itallowspeopletolivelonger.2.Itgiveschildrentoinfertilecouples.1.Itisexpensive2.Itisinefficient.3.Itcancreatearaceofpeopletocompetewithordinaryhumans.MorequestionsondetailsListentothepassageagainandanswerthefollowingquestions.1)Howdosomepeopleviewhumancloning?2)Whatwillhappenifgovernmentsinvestmoremoneyincloninghuman?3)Whatwillbetheresultoffailedattemptsathumancloning?Leading-in—Areyoufororagainsthumancloning?Listatleastthreereasons.•fightfataldiseases•savedyingrelatives•helpinfertilepeoplehavechildren•creategenius•extendhumanlife•createnewimmunesystems(免疫系统)•groworgansandtissuesfortransplantsurgery(移植手术)Tips•denyhumanrights•reducevarietyofhumangenepool•unsafe•birthdefects•ashorterlife•religiousobjections•psychologicalharms•degradethequalityofparentingandfamilylifeExtensiveListeningPractice:ShortConversationsonPage1151.2.3.4.5.6.7.8.9.10.Keys:BDCAAACCABIntensiveListeningPractice:LongConversationsonPage1151stlistening:Listentotheconversationcarefullyandchoosethebestanswer.Q1.Q2.Q3.Q4.Q5.Q1.Whatarethespeakerstalkingabout?Q2.Whatistherelationshipbetweenthetwospeakers?Q3.Whymustapositionbedecideduponrightaway?Q4.Howdoesthewomanfeelabouttheman?Q5.Howdoesthemanfeelaboutinfertilecouples?2ndlistening:Listentotheconversationagainandtakesomenotesconcerningthequestions(Includingthemainidea,theirrelationship,thetaskthemanassignedtothewoman,theman’sposition,etc…).Retellittotheclass.ScriptM:HaveyoufinishedthedraftIordered?W:Youmeanthedocumentthatwillspelloutourpositiononhumancloning?Canyouwaitanotherdayortwoforit?I'mstillhavingproblemsdeterminingwhatourpositionshouldbe.M:I'mafraidthiscan'twait.Weneedtogetourpositionoutimmediatelytodoctorsandpotentialparentswhoneedsomesortofauthoritativeadvice.W:Maybeit'dhelpifwetalkedthisouttogether.M:Fine.Whatquestionsdoyouhave?W:I'dliketoknowwhatyoufeelaboutthisissuepersonally.Astheheadofthiscommittee,youshouldhavethegreatestsayinourstance.M:Fine.Ifeelthatcloningiscompletelyethicalandshouldbeadvancedasatoppriorityofmedicine.W:Why?M:I'mextremelyconcernedaboutparentswhoareunabletohavechildrennaturally.Cloningwouldallowtheseparentstohavechildreneveniftheywereinfertile.W:Anythingelse?M:That'sitfornow.Writethisupquicklyandhaveitonmydeskbeforeyouleavefortheday.IntensiveListeningPractice:PassageonPage1161stlistening:Listentothepassagecarefullyandchoosethebestanswer.Q1.Q2.Q3.Q4.Q5.Q1.Accordingtothepassage,whichofthefollowinghasNOTbeencloned?Q2.Howdoclonedanimalscomparewithnormallyreproducedanimals?Q3.WhendidMassachusettsresearcherssaytheyweretryingtoclonepeople?Q4.HowdopeopleoftheNationalAcademyofSciencesfeelaboutcloning?Q5.WhatwasdiscoveredabouttheannouncementmadebySouthKoreanscientists?SpotDication2ndand3rdlistening:Listentothepassagecarefullyandfillintheblanks.Dolly,theclonedsheep,wasthebiggestnewsstoryof1996.Sincethenrodents,cattle,pigsandotheranimalshave,likeDolly,alsobeenclonedfromadultanimals.thesesuccesses,producingclonedmammalsisdifficult,withmostattemptsfailure.Cloningsucceedsfourpercentofthetimeinspeciesthathavealreadybeensuccessfullycloned.Inaddition,somestudieshavethatclonedanimalsarethannormallyreproducedanimals.DespiteenormouslyendinginindicatedlesshealthyIn2001,researchersinMassachusettsannouncedthattheyweretryingtoclonehumanstoextractstemcells.TheNationalAcademyofSciences,whileannouncingsupportforsuchso-calledtherapeuticorresearchcloningin2001,announcedtheythecloningofhumansforpurposesin2002.Theysaiditwasunsafe.Ethicists,religiousandpoliticalleaders,andothershavecalledforaonhumancloningforanypurpose.TheywereespeciallyworriedwhenSouthKoreanscientistsannouncedin2004thattheyhadcloned30humanembryos.However,aninvestigationin2005thatthedatahadbeenfabricated.inanattemptopposedreproductivebandeterminedAssignmentFinishhomeworkonthetextbook(P124-126)Prepareathree-minuteoralreportonthetopic:Benefitsandrisksincloning.TaskEnglishMovie/dramadubbingOptions:KongfuPandaFindingNemo