高中英语 unit2《Cloning》课件 新人教选修8.ppt

Unit2CloningEnglishSongEnglishClassLanguageDataBank课时分配Period1&2WarmingupandReadingILookatthefollowingpicturesandanswerthequestions:1.It’sthemostfamoussheepintheworld.DoyouknowhowDollyisdifferentfromothersheep?2.Whatiscloning?Inthisclasswe’lllearnapassageaboutcloningbutbeforewecometothetextcanyouguesshowacloneisproduced?Reading–IScanning(5ms)4.Dollythesheepwasthefirstsuccessfulcloneofamammal5.Naturalcloneshappeninanimalsaswillasinplants.1.Dollythesheep_____.A.lookedexactlylikethesheepthatprovidestheegg.B.wastheexactcopyofthesheepthatprovidesthenucleus.C.lookedlikethesheepthatgavebirthtoit.D.hadthecharacteristicsofallthreesheep.2.Itcanbeinferredfromthepassagethataclonedanimal_____.A.usuallylivesaslongastheoriginaloneB.usuallyliveslongerthantheoriginaloneC.usuallyliveslongerthantheoriginaloneD.isusuallyashealthyastheoriginalone3.Whichofthefollowingisnotanadvantageofcloning?Cloningcanbeusedformedicalpurposes.Largequantitiesoffoodcanbeproducedbycloning.Cloningcanhelpkeepanimalsfrombecomingextinct.Famouspersonswhohavepassedawaycanbecloned.4.Whatispeople’sfearabouthumancloning?Whichofthefollowingiswrong?ClonedHitlerswoulddoharmtotheworld.Clonedpeoplemaybekilledatwillformedicalaid.Awomanwouldhavedifficultyrecognizingherrealhusband.Menwilldieoutbecauseawomancangivebirthtoababywithoutahusband.Reading–IIIDetailreading(8ms)Fillinthechartusingtheinformationfromthetext.Animalclonesmay_______________thanthedonoranimalsReading–IVIntensivereading(7ms)Practice–discussion(8ms)Questions:Doyousupporttheideaofproducinghumanembryos(胚胎)formedicalpurposes?Why?Doyouthinkitagoodideatouseclonedhumansfororgan(器官)transplants?Why?Doyouthink