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ID:56964271
大小:3.42 MB
页数:34页
时间:2020-07-22
《谭霞 高二英语Unit_2_Cloning-Reading[课件.ppt》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、Unit2cloningReadingWhichonesarenaturalclones?Whichonesareman-made?Howdotheydiffer.WarmingupTwinsTheyarebornnaturallyandidenticalinsexandappearance.Growingnewplantsman-madeclone富贵竹插枝即活LuckybambooThegardenershouldcuttheplant,thenthecuttingproduceanothernewp
2、lant.AstrawberryplantThenewplantsthatgrowfromtherunnersareexactcopiesoftheoriginalplant.第一只克隆宠物猫克隆马及其“母亲兼姐姐”2002年4月十六日美国第一头克隆牛“艾米”产下牛犊喜作妈咪克隆的荧光小猪(左)和正常小猪(右)我国成功繁殖克隆兔体形要比普通兔大许多2002年5月中旬成功地繁殖了一只胚胎细胞克隆兔。Naturalcloneisonethatoccursinanaturalformofcloningwith
3、outhumanhelp.Man-madecloneisonethatproducedthroughhumanintervention(介入).DollythesheepShewasclonedwhiletheotherswerebornnaturally.Inotherword,Dollywasa______sheep.clonedHowdoesDollydifferfromothersheep?man-madeclonePre-reading–addyourquestionstothelistQue
4、stionlistaboutcloningWhatisaclone?Howisacloneproduced?Whatbenefitscanhumansgainfromcloning?Whatproblemsmayarisewhenhumansarecloned?5.…6.…共119页14●重点单词1.differvi.不同;相异→differentadj.不同的→differencen.不同,差异2.twinn.双胞胎之一;孪生儿之一adj.成对的;成双的3.straightforwardadj.简单的;
5、直接的;坦率的4.undertakevt.着手;从事;承担→undertook(过去式)→undertaken(过去分词)共119页155.breakthroughn.突破6.castvt.扔;投;掷→cast/cast(过去式/过去分词)7.objectvi.反对;不赞成→objectionn.不赞成;反对;异议→objectiveadj.真实的;客观的;无偏见的8.obtainvt.获得;赢得9.attainvt.获得;达到(水平、年龄、状况等)共119页1610.forbidvt.禁止;不准→fo
6、rbade(过去式)→forbidden(过去分词)11.accumulatevt.积累;聚积12.owevt.欠(账、钱、人情等);归功于……13.retirevi.退休;离开→retirementn.退休14.bothervt.打扰vi.操心n.烦扰共119页17●重点短语1.payoff得到好结果;取得成功;偿清2.castdown沮丧;不愉快3.objectto反对4.infavourof赞成;支持5.owe...to...把……归功于……6.(be)boundto(to)...一定或注定(做)
7、……Skimming(略读):matchthemainideawitheachparagraph(段落大意连连看)A.Twomajorusesandtheprocedureofcloning.B.Cloningisawayofmakinganexactcopyofanotheranimalorplant.C.TheeffectofDollythesheep.D.Itisforbiddentoclonehumanbeings.E.Theproblemofdollythesheep.Para.1Para.2P
8、ara.3Para.4Para.5________________________________________Cloningisawayofmakinganexactcopyofanotheranimalandplant.Whatiscloning?Cloninghappensbothin______andin_______.Theycanbeclonedby________and_______.plantsanimals
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