北师大版高中英语选择性必修3 UNIT 9 Section A TOPIC TALK LESSON 1.pptVIP

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ZhongZhongandHuaHua

ScientistsinChinahavesuccessfullyclonedtwomonkeys.Thegeneticallyidentical①long-tailedmonkeysborninShanghai,calledZhongZhongandHuaHua,arethefirstprimateclonesproducedthroughthemethodthatmadeDollythesheepinScotlandin1996.Theirnamesareaplayonthephrasezhonghua,whichmeansChinesenationorpeople.;Althoughthecloningmethod,knownassomaticcellnucleartransfer(SCNT)(体细胞核移植),isalmostroutineinmammalssuchassheep,cattleandmice,ithasbeenextremelydifficulttoreplicate(复制,折叠)inprimates.Previouseffortswithmonkeysoftenresultedinclonesthatdidnotdevelopproperlyasembryos(胚胎)ordiedshortlyafterbirth.?

“NowthatSCNTcloninghasbeenachievedwithprimates,humancloningispossible,”saidauthorsofthestudy,publishedinthejournalCell.“Thetechnicalbarrier②isnowbroken.Inprinciplethismethodcanbeappliedtohumans,”saidMu-mingPoo,aco-author.But,headded,“Weclonedthemonkeystoproduceanimalmodelsusefulformedicine,forhumanhealth.There’snointentionforustoapplythismethodtohumans.”;Thestudyraisesconcernsaboutanimalethics③inChina,whichhaslessrigidtestingregulationsthanmanyothercountries,thoughtheresearchersfollowedguidelinesforanimalresearchsetbytheUSNationalInstitutesofHealth.DrPooisencouragingscientistsinternationally④todiscusstheissue.“Weareveryawarethatfutureresearchusingnon-humanprimatesanywhereintheworlddependsonscientistsfollowingverystrictethicalstandards,”hesaid.?;词海拾贝

①identicaladj.完全相同的,完全相似的

②barriern.障碍

③ethicsn.伦理学

④internationallyadv.国际性地;典句欣赏

1.Althoughthecloningmethod,knownassomaticcellnucleartransfer(SCNT),isalmostroutineinmammalssuchassheep,cattleandmice,ithasbeenextremelydifficulttoreplicateinprimates.

译文:尽管这种称为体细胞核移植的克隆方法在绵羊、牛和老鼠等哺乳动物中几乎是常规方法,但在灵长类动物中复制却极为困难。

分析:这是一个较为复杂的主从复合句。although引导让步状语从句,而“knownassomaticcell