高中英语 Unit3《Science versus nature》Welcome to the unit课件2 牛津译林版必修5.ppt

《高中英语 Unit3《Science versus nature》Welcome to the unit课件2 牛津译林版必修5.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、Module5,Unit3WelcometotheunitTheadvancedtechniqueingenetics(遗传学)withwhichscientistscancreateorcopythingswiththesameDNAiscalled-?cloneScientificdefinitionCloningisthecreationofcellsorwholeanimalsbyusingDNA(脱氧核糖核酸)fromasingle"parent",bypassing(绕道而行)thenormalreproductive(生殖)process.Theclonehast

2、hesameDNAtothe“parent”.DollyanditscreatorclonedfemalepigsclonedcalvesfromJapanthefirstclonedmonkey.clonedchickenthecloneddeerDoyouthinktheclonedanimalsareashealthyasthenaturalones?Dollyis,butscientistsdonotyetknowwhetherthisistheexception(例外)ortherule.Someearlyevidencessuggestthatclonesmayha

3、vehealthproblemsandthattheymayageprematurely(早衰的，未老先衰).Ifyouareascientist,whatdoyouwanttoclone?Why?BrainstormingMorecontributionstohumanMoreworldchampionsChina,amoreharmoniouscommunityJustimagineSupposingyouarefacingyoursecondselfwholookslikeyou,talkslikeyouandthinkslikeyou,howdoyoufeel?Tryt

4、odescribeBush’sfeelings.Ifcloninggoeswrong,whatwillhappen?FunpicturesAdogoraneagle?Aduckoracrocodile?Acockoradog?Alionorakangaroo?Afrogoracrocodile?Atortoiseorabear?Abirdoradog?Adogoraman?DiscussionDoyouthinkgovernmentsshouldpasslawstoprohibithumancloning?Whyorwhynot?PartyATheyshouldn’t,for…

5、reasons:Cloningcanhelpcuremanydiseasesandsavealotofpeoplelives.2.……3.……PartyBTheyshould,for…reasons:Cloningcanleadtoethical(伦理)problems.2.……3.……GivinganoralreportTodayourclasshadadiscussionaboutwhetherthegovernmentsshouldpasslawstoprohibithumancloning.Somestudentsthinkthatthegovernmentsshoul

6、d,for…However,someotherstudentsthinkitnecessarytoprohibit…,for…Inmyopinion,…Thankyouforyourattention!ByeBye