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1、Unit3ScienceandnatureCloningextinctandendangeredspecies什么是克隆？克隆技术如何在生活中应用才能更好地为人类服务？文堂通过一些实例给出了答案。Cloning,ormoreprecisely,thereconstructionoffunctionalDNAfromextinctspecieshas,fordecades,beenadream.Tliebestcurrentcloningtechniqueshaveanaveragesuccessrateof9.4percent.Severaltissuebankshavecomeintoexi
2、stence,includingtheFrozenZooattheSanDiegoZoo.tostorefrozentissuefromtheworldsrarestandmostendangeredspecies.In2019racownamedBessiegavebirthtoaclonedAsiangaur（亚洲白肢野牛），anendangeredspecies,butthecalfdiedaftertwodays.ln2019.abanteng（爪哇野牛）wassuccessfullyclonedfromathawedfrozenembryo.Tliesesuccessesprovid
3、edhopethatsimilartechniquesmightbeusedtocloneextinctspecies.InJanUary2009forthefirsttime,anextinctanimalthePyreneanibex（阿尔卑斯山的野山羊）wascloned,attheCentreofFoodTechnologyandResearchofAragon,usingthepreservedfrozencellnucleusoftheskinsamplesfrom2（）19anddo11）esticgoaleggcells.Theibexdiedshortlyafterbirth
4、duetophysicaldefectsinitsIungs.RcscarchcrsarcalsoconsideringcloningendangeredspeciessuchasthegiantpandaandCheetah（猎豹）.In2019,geneticistsattheAustralianMuseumannouncedthattheyhadrcplicalcd（M）DNAoftheIhylacine（袋狼），atthetimeextinctforabout65years,usingpolymerasechainreaciion（聚合fi链式反应）.ScientistsattheUn
5、iVCniiIyofNewcastleandUniversityofNewSouthWalesannouncedinMarch2019thattheveryrecentlyextinctgastricb11xlingfrog（胃育蛙）wouldbethesubjectofacloningattempttoresurrect（登活）hespecies.词海拾贝eintoexistence成立2 .givcbirthto生产；生育3 .beusedto被用于4 .forthefirsttime首次：第一次5 .dueto由于：因为6 .suchas例如7 .atthetime在那时8 .attem
6、pttodosth企图做某事PeriodOneWelcometotheunit&ReadingI.单词自测.”.克隆：.克隆出来的动物或植物1.1 1.（生物的）组织；纸巾迎儿问题：争端：发行3 .rcaITifCaa直立的,现实生活中的Iik二Ij拴“吹逼真的，活灵活现的4 .cxactadj.确的，精确的exactly加精确I也,精确地5.iNeniion”意图,目的：企图intend”八准备,急欲6 .anxiey几忧虑,焦虑，担忧nitHs”少焦虑的7 .adop收养,领养:接受，接受adax也适应;改编8 .!fi!”办法律许可的，合法的legally此，所以I1.haNCSI”&式
7、.收割（庄稼）：”.收获；收成1!.transforma使变更外观或性质（尤指向好的方向）：使变更形态13 .conce.概念:观念14 .crimc.罪,罪行11短语默写IQnIhCOnehand.onIhCOlhCrhand.方面另方面2 .ngeneral总体上来说3 .concentrateOn集中精力于，聚精会神于4 .showreciftr对表示敬意5 .pushaheadwith义无反顾地进行，努力推动6 .toywith戏弄，摆布；把当作儿戏7 .forsale待售，供出t8 .inagreementwith和看法一样9 eacross偶然发觉，遇见10 .takeaway带走
8、：消退，解除阅读清障announce。/.宣布，宣告，通知anKHnccmcni宣告，通告，通知donekMi克隆儿克隆出来的动物或植物（JembryembrIao/JH3）ontheonehand一方面POintout指出IiSSuCrlUu:/M生物的）组纵:纸巾beusedIOdO被用来做Ontheotherhand另一方面5K介词短语includingsomescientists=somescientistsincluded.IoyWith戏弄，撰布：把当作儿戏inthisWay用这种方式reaUife/ri:。门aIf/的.真实的,现实生活中的monster/monsiMM.怪物On
9、OnCwthCwaytodoingsth意为“某事即将发生”，Io为介词，后接名词、代词或动名词（短语）。exacl9,碇ktItalianTtaHlon/MA意大利的他意大利人：意大利i吾ItaIy.意大利PhySiCianfnzlJn/.医师：内科医生focus.On集中于usWdlas也，又，和一样succeed成胜利succeedindoingSlh胜利地做某事Ogoatgtzj.llXinwhich弓I导定语从句，修饰Ways,inwhich可换成that或省略不用。benefit”有利于，使受益次.得利.利益,好处原文呈现TheperfectcopyScientistshavean
10、nouncedthattheyhaveclonedIhCfirsthumanembryo.Thishascausedmuchdebateroundtheworld.Ontheonehand，somescientistspointoutthatifyoucloneanembryo,youcanproducevaluablehumantissues-suchasboneorlungtissue-thatcouldbeusedtosavehumanlivcs.0ntheotherhand,manypeople,includingqhilSCienIits,disagreeandareafraidth
11、at,ifmankindtoyswithnatureinthiswaywemaybeonnWaYoprkcingJcal-IikFJankenWKin3iDonslCloningisproducinganexactccopyofaplantorananimal向itscells1.TlieJjrslInjnininlIObCCIOnCdSuCCCbSfUlIyfromanadultcellwasDolIy山CShCCPShewasbornin2019anddiedinearly2019atamuchyoungeragethannormal.Whenshewasborn.manypeoplewe
12、reworriedthatcloningwouldleadto1moredijveajvesintheanimalworld.However,ingeneral1thescientistswerepraisedfortheirwonderfulscientificadvance.IanWilmuttheScottishscientistWhOCrCalCdDully,isshockedthatsomeWiCnliSlSarcnowconsideringcloninghumanbeings.AlIhaUghh*JGKdftHg,hisintention*hasneverbeentocreatecopiesofIwmansJns
