人教版选修8unit2-cloning---reading(公开课课件)

Period1Warmingup&ReadingShewasc______whiletheotherswerebornnaturally.Itistheexactcopyofanothersheepandthefirstclonedmammal.lonedDollythesheep没爹没娘的多莉羊Theworld’sfirstclonedcat,kitten,namedCc.Itwascreatedusingacelltakenfromanadultcat,Rainbow.DogSnuppywascreatedbyKoreanandAmericanscientistsItsnameisAndi,thefirstgeneticallymodifiedmonkey.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”Theplantproducesitsownrunners.NotonlyanimalsbutalsoplantscanbeclonedAstemTakecuttingsfromgrowingplantstomakenewones.Theyareidenticalinsexandappearance,whoareproducedfromthesameoriginalegg.Questionsaboutcloning1.Whatiscloning?Cloningisawayofmakinganexactcopyofanotheranimalorplant.Theyincludenaturalandman-madeclones.Clone?NaturalcloneMan-madecloneNaturalcloneisonethatoccursfromthe“parent”inanaturalformofcloningwithouthumanhelp.Man-madecloneisoneproducedthroughhumanintervention(介入).Inpairs,lookatthesepicturesanddiscusswhichonesarenaturalclonesandwhichonesareman-made.Explainhowtheydiffer.WarmingupnaturalclonesnaturalclonesclonedanimalsNO.Thefirsttwoareman-madeclones,theresttwoarenaturalclones.Fast-readingTask1Readtheletter,thentrytofindthemainideaofeachparagraph.1.Cloningis______________________________2.Cloninghas____________uses.3.The_________ofDolly.4.The________ofDolly.5.Itis__________toclonehumanbeings.awayofmakinganexactcopyofanotheranimalandplant.problemstwomajoreffectforbidden1.Themainideaofthetextis____A.animalcloningisveryvaluableandcanbenefittheworld.B.animalcloningcouldbemisusedbybadpeoplesoitmustbeforbiddenC.animalcloningiswelldevelopedbecauseDollythesheepwasborn.D.animalcloningraisedargumentsandscientistsarenotsureaboutitsfuture.Choosetherightansweraccordingtothetext.2.Itcanbeinferredfromthepassagethataclonedanimal_____.A.usuallylivesaslongastheoriginaloneB.usuallyliveslongerthantheoriginaloneC.usuallylivesshorterthantheoriginaloneD.isusuallyashealthyastheoriginalone3.WhichstatementisNOTtrue?A.Cloningissomethingthathasbeendevelopedquiterecently.B.Twinsthatlookexactlythesameareoriginallyfromthesameegg.C.Cloningisusedbygardenerstomakemoremoney.D.Animalcloningismuchmoredifficultthanplantcloning.4.ThecloningofDollythesheepsucceededbecause____.A.itseasiertocloneasheepthanotheranimalsB.thescientistsweredeterminedandworkedhardwithpatienceC.thescientistswererewardedandgotlotsofmoneyD.manyotherattemptstoclonemammalsfailed5.Thesheepthatdonatedthesomaticcellmostprobablylived____years.A.3B.6C.9D.12Howisacloneproduced?Trueoffalse:1.Fourfemalesheepparticipateinthecloningofanewsheep.2.Electricityisneededintheprocedure.3.SheepBprovidesasomaticcellfortheclone.4.ThelambistheexactcopyofsheepA.TFTFAdvantagesofcloning1.Medicalcloningcouldproducecuresforseriousillnessesinhumans.2.Cloningplantscanproduceplantsofsimilarqualityforsale.3.Cloningplantscanbeusefulforresearchonnewplantspecies.4.Cloningcanhelpsaveendangeredanimals.Problemsordangersofcloning1.Animalclonesmaydeveloptheillnessesofolderanimals.2.Animalclonesmaydieyoungerthanthedonoranimals.3.Evilleadersmaywanttoclonethemselves.4.Therearemoralobjectionstocloninghumanbeings.1.Whatisthewritingstyle?A.Expositive（说明性的）B.DescriptiveC.Argumentative（议论性的）D.Narrative2.Thewriter’sreactiontowardscloningis____A.PositiveB.NegativeC.neutralChallengeyourselfConsolidationCloneisawayofmakinganexact_______ofanotheranimalorplant.Cloninghavetwo______uses.Firstly,gardenersuseitallthetimetoproduce_____________quantities.Secondly,itisvaluableforresearchonnewplant_________andformedicalresearchonanimals.Butthroughthe_________anddeathofDolly,cloninghasalotofproblems.Ontheotherhand,weknowcloningiscontroversialinsomecountriesfor________and___________reasons.copymajorcommercialspeciesbirthmoralreligiousCloningpeopleisagoodthing,orabadthing?克隆人是福音,还是恶兆？ThinkingOh!MyGod!Iwascloned!Asacoinhastwosides,everythinghastwoaspects.Ontheonehand,ifthecloningisusedinacorrectwayitcanbringmanyconveniencestous.Suchas:curingseriousillnessesandbeingusedtoproducecommercialqualitiesofplants.Ontheotherhand,ifthecloningisusedinanevilwayitcancausemuchtroubles:suchasmoralquestions.