高中英语Unit 3 Science versus nature Welcome 课件牛津版必修5 课件VIP免费

Unit3ScienceversusnatureWelcometotheunitWhatdoesversusmean?Itisusedwhendiscussingsportscompetitionorthelaw,whichmeansthattwoteamsorsidesareagainsteachother.prep1.(在诉讼,比赛中)以…为对手,对theplaintiff(原告)versusdefendant(被告)ThematchtonightisChinaversusJapan.2.与…相对,与…相比egegAcurve(曲线)ofpressureversustemperatureTheproblemofpeaceversuswar1Doyouthinkwhyversusisusedhere?Isthereanyconflict(冲突)betweenscienceandnature?2Whatmightbetheconflict?3Canyouguesswhatkindoftopicswewilldiscussinthisunit?beyondbeyonddescriptioncontrolcomprehensionTheriverrepairLookatthesepictures,canyouidentifythedifferencesbetweentheaboveanimalsandnormalones?Today,wewilldiscussanewtechnologycalled‘cloning’.Accordingtowhatyouhavelearntinbiology,doyouknow1WhatiscloningtechnologyCloningisproducinganexactcopyofaplantorananimalusingitsowncells.2Areyouinfavorof(赞成)thistechnology?Whyorwhynot3DoyouknowwhatisthefirstclonedmammalThesheepcalledDollytheworld'sfirstclonedmammal.ItwascreatedbyScottishscientists.Itcausedworldwideinterestbecauseshelooksthesameashermother,bothinappearanceandingenes.Picture-talkThefirstclonedmammalDollyandItsFather-IanWilmutDoyouthinkitcanlivelong?Dollydiedoflungdiseaseatanearlyage.Itsexistencewasalsocontroversial(有争议的).Somepeoplebelievethatcloningcanhelpcuremanydiseasesandsavealotoflives.However,othersthinkcloningisdangerousbothtechnologicallyandethically(伦理上的).Theworld‘sfirstclonedmule(骡子)wasbornonMay4.Heiscreatedfromacellofhishisbrother,whichwasaracingmulethathaswonmanycompetitions.kittenRainbowTheworld'sfirstclonedkitten(cat),namedCopycat(cc).Itwascreatedusingacelltakenfromanadultcat,Rainbow.Theworld'sfirstclonedpigswereproducedfromanadultfemalepigusingadifferenttechniquefromtheonethatproducedDolly.Theyarethesecondadult-animalclones.Researchcentresaidthenewtechniquewouldbeusedtobreed(繁殖)bettercattlestrains(类型)withhigher-qualitybeeforgreatermilkcapacity(生产力).Itisthefirstgeneticallymodifiedmonkey.ItsnameisANDI.ItisfrominsertedDNAspeltbackwards.ClonedRabbits•Discussions1Inyouropinion,whatmightbethe1Inyouropinion,whatmightbethedifferencesbetweenthesecloneddifferencesbetweentheseclonedanimalsandnormalones?animalsandnormalones?differencesLifespanFunctionsoftheirorgansTheimmunesystem2Cantheseclonedanimalsleadanormallifeasnormalanimals?Forexample,doesthemuleinPicture2runasfastashisbrother?3Doyouthinkitwouldbeagoodidea3Doyouthinkitwouldbeagoodideatoclonehumanssomeday?Whyortoclonehumanssomeday?Whyorwhynot?whynot?