高二英语选修8 unit2 cloning 课件VIP免费

DollythesheepanditsbabyClonedrabbit克隆的荧光小猪(左)和正常小猪(右)克隆马及其“母亲兼姐姐”Reading–IScanningWritetheletter“T”ifthestatementistrue.Write“F”ifitisfalse.1.Cloningmeansmakingacopyofananimaloraplant.2.Gardenerscanmakealotofmoneybycloningplants.3.Cloninganimalsisascomplicatedascloningplants.FFT4.Dollythesheepwasthefirstsuccessfulcloneofamammal5.Naturalcloneshappeninanimalsaswellasinplants.TT1.Itcanbeinferredfromthepassagethataclonedanimal_____.A.usuallylivesaslongastheoriginaloneB.usuallyliveslongerthantheoriginaloneC.usuallylivesshorterthantheoriginaloneD.isusuallyashealthyastheoriginaloneReading2.WhichstatementisNOTtrue?A.Cloningissomethingthathasbeendevelopedquiterecently.B.Twinsthatlookexactlythesameareoriginallyfromthesameegg.C.Cloningisusedbygardenerstomakemoremoney.D.Animalcloningismuchmoredifficultthanplantcloning.3.ThecloningofDollythesheepsucceededbecause____.A.itseasiertocloneasheepthanotheranimalsB.thescientistsweredeterminedandworkedhardwithpatienceC.thescientistswererewardedandgotlotsofmoneyD.manyotherattemptstoclonemammalsfailed4.Thelambisthecloneofthecellfromsheepbecause_____.A.itprovidestheeggcellB.itgivesbirthtothelambC.itprovidesthenucleusD.itisafemalesheep5.Thesheepthatdonatedthesomaticcellmostprobablylived____years.A.3B.6C.9D.12CarefulreadingReadtheletteragain,thentrytofindthemainideaofeachparagraph.1.Cloningis______________________________2.Cloninghas____________uses.3.The_________ofDolly.4.The________ofDolly.5.Itis__________toclonehumanbeings.awayofmakinganexactcopyofanotheranimalandplant.problemstwomajoreffectforbiddenProblemsordangersofcloning1.Animalclonesmaydeveloptheillnessesofolderanimals.2.Animalclonesmaydieyoungerthanthedonoranimals.3.Evilleadersmaywanttoclonethemselves.4.Therearemoralobjectionstocloninghumanbeings.Advantagesofcloning1.Medicalcloningcouldproducecuresforseriousillnessesinhumans.2.Cloningplantscanproduceplantsofsimilarqualityforsale.3.Cloningplantscanbeusefulforresearchonnewplantspecies.4.Cloningcanhelpsaveendangeredanimals.意大利狂人医生:安蒂诺里冒死也要克隆人的科学家:布瓦瑟利耶Cloningpeopleisagoodthing,orabadthing?克隆人是福音,还是恶兆？ThinkingHomework:Whathappensnext?