高中英语 unit2 cloning 第3课时导学案 新人教版选修8

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1、河北省唐山市开滦第二中学高中英语Unit2Cloning第3课时导学案新人教版选修8Teachingaim:掌握科普文章的阅读方法及策略TeachingkeypointsanddifficultyHelpstudentsanalyzethereadingtechniqueofthearticle.学习过程：Newwords:预习下列单词，并会默写1.精确的2.商业的3.坦率的4.着手，承担5.突破6.程序，步骤7.携带者8.总共9.任意的10.修改，改正11.反对12.媒介13.获得，赢得14.获得，到达15.道德的16.保守的，守旧的17.禁止18.积累

2、Step1:Findoutthemainideaofeachparagraph.Para1.Para2.Para3.Para4.Para5.(a)Cloninghastwomajoruses.(d)TheproblemsofDolly.(b)TheeffectofDolly.(c)Itisforbiddentoclonehumanbeings.(e)Cloningisawayofmakinganexactcopyofanotheranimalandplant.Step2:Readthepassagequicklyandfinishthefollowingc

3、omprehensiveexercises.Choosetherightansweraccordingtothetext.1.Dollythesheep_____.A.lookedexactlylikethesheepthatprovidestheegg.B.wastheexactcopyofthesheepthatprovidesthenucleus.C.lookedlikethesheepthatgavebirthtoit.D.hadthecharacteristicsofallthreesheep.2.Itcanbeinferredfromthepa

4、ssagethataclonedanimal_____.A.usuallylivesaslongastheoriginaloneB.usuallyliveslongerthantheoriginaloneC.usuallyliveslongerthantheoriginaloneD.isusuallyashealthyastheoriginalone3.Whichofthefollowingisnotanadvantageofcloning?A.Cloningcanbeusedformedicalpurposes.B.Largequantitiesoffo

5、odcanbeproducedbycloning.C.Cloningcanhelpkeepanimalsfrombecomingextinct.D.Famouspersonswhohavepassedawaycanbecloned.4.Wecanusetheskillofcloningto__________.A.bringaboutglobalpeaceB.createotherfamousscientistsC.improvethedevelopmentoflearninglanguageD.curesomespecialdiseases5.Whata

6、repeoplecloningnow?__________A.Theyarecloningtrees,cropsaswellasanimalsB.TheyarecloningbooksandmachinesC.TheyarecloninghumansandanimalsD.TheyarecloningplantsandscienceStep3:DetailreadingFillinthechartusingtheinformationfromthetext.(1)Problemsordangersofcloning:a)Animalsmay________

7、____________ofolderanimals.b)Animalclonesmay____________thanthedonoranimalsc)___________maywanttoclonethemselves.d)Thereare___________________tocloninghumanbeings.(2)Advantagesofcloninga)Medicalcloningcould_____________forseriousdegenerative(变质的）________inhumans.b)Cloningplantscan

8、_____________ofsimilar___________