高二英语选修8 unit2 cloning 课件.ppt

Unit2Cloning,Dollythesheepanditsbaby,Clonedrabbit,克隆的荧光小猪(左)和正常小猪(右),克隆马及其“母亲兼姐姐”,ReadingIScanning,Writetheletter“T”ifthestatementistrue.Write“F”ifitisfalse.,1.Cloningmeansmakingacopyofananimaloraplant.2.Gardenerscanmakealotofmoneybycloningplants.3.Cloninganimalsisascomplicatedascloningplants.,F,F,T,4.Dollythesheepwasthefirstsuccessfulcloneofamammal5.Naturalcloneshappeninanimalsaswellasinplants.,T,T,1.Itcanbeinferredfromthepassagethataclonedanimal_.A.usuallylivesaslongastheoriginaloneB.usuallyliveslongerthantheoriginaloneC.usuallylivesshorterthantheoriginaloneD.isusuallyashealthyastheoriginalone,Reading,2.WhichstatementisNOTtrue?A.Cloningissomethingthathasbeendevelopedquiterecently.B.Twinsthatlookexactlythesameareoriginallyfromthesameegg.C.Cloningisusedbygardenerstomakemoremoney.D.Animalcloningismuchmoredifficultthanplantcloning.,3.ThecloningofDollythesheepsucceededbecause_.A.itseasiertocloneasheepthanotheranimalsB.thescientistsweredeterminedandworkedhardwithpatienceC.thescientistswererewardedandgotlotsofmoneyD.manyotherattemptstoclonemammalsfailed,4.Thelambisthecloneofthecellfromsheepbecause_.A.itprovidestheeggcellB.itgivesbirthtothelambC.itprovidesthenucleusD.itisafemalesheep,5.Thesheepthatdonatedthesomaticcellmostprobablylived_years.A.3B.6C.9D.12,Carefulreading,Readtheletteragain,thentrytofindthemainideaofeachparagraph.,1.Cloningis_2.Cloninghas_uses.3.The_ofDolly.4.The_ofDolly.5.Itis_toclonehumanbeings.,awayofmakinganexactcopyofanotheranimalandplant.,problems,twomajor,effect,forbidden,Problemsordangersofcloning,1.Animalclonesmaydeveloptheillnessesofolderanimals.,2.Animalclonesmaydieyoungerthanthedonoranimals.,3.Evilleadersmaywanttoclonethemselves.,4.Therearemoralobjectionstocloninghumanbeings.,Advantagesofcloning,Medicalcloningcouldproducecuresforseriousillnessesinhumans.,2.Cloningplantscanproduceplantsofsimilarqualityforsale.,3.Cloningplantscanbeusefulforresearchonnewplantspecies.,4.Cloningcanhelpsaveendangeredanimals.,意大利狂人医生:安蒂诺里,冒