高三英语一轮复习 unit 2 cloning练习 新人教版选修

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1、“讲忠诚、严纪律、立政德”三者相互贯通、相互联系。忠诚是共产党人的底色，纪律是不能触碰的底线，政德是必须修炼的素养。永葆底色、不碰底线Unit2　Cloning阅读理解·组块专练——练速度(限时：35分钟)Ⅰ.阅读理解AHaveyouseenJurassicPark?Inthisfilm,scientistsuseDNAkeptfortensofmillionsofyearstoclonedinosaurs.Theyfindtrouble,however,whentheyrealizethattheclon

2、edcreaturesaresmarterandmoredangerousthanexpected.That'snothingmorethanafiction.Butcouldwereallycloneendangeredanimals?Todate,themostsuccessfulattempttodosowasthecloningofagaur,arareoxlikeanimalfromsoutheastAsia.Scientistsusedacowtobringtheclonedbabygaur,n

3、amedNoah.Twodaysafterbirth,however,Noahdiedfromacommonbacterialinfection.OtherendangeredspeciesthatmaybeclonedincludetheAfricanbongoantelope(羚羊),theSumatrantiger,thecheetah(猎豹),andthegiantpanda.Next,couldwereallycloneextinctanimals?Intheory?Yes.Todothis,yo

4、uneedawellkeptsourceofDNAfromtheextinctanimalssuchaswoolmammoth(毛象),Tasmaniantiger,orevendinosaur,andacloselyrelatedspecies,stillliving,whichcouldserveasa_surrogate_mother.Inreality?Probablynot.Ontheonehand,it'snotlikelythatextinctanimals'DNAcouldsurviveun

5、damagedforsuchalongtime.Cloningsuchextinctanimalsaswoolmammoth,Tasmaniantiger,ordinosaurismuchmoredifficultduetothelackofproperlywellpreservedDNA.Ontheotherhand,forexample,agaurcanhaveacowasasurrogatemother,definitelynotamonkey.Butwhataboutanextinctanimala

6、suniqueasthepanda?Whatspeciescouldpossiblyserveasasurrogatemother?Cloningpresentsmanyexcitingpossibilities.However,evenifextinctanimalswerebroughtback,theycouldnotsurviveintoday'sworld.Notonlydomostextinctanimalshavenohabitattolivein,buttheotherplantsandan

7、imalstheydependedonforfoodmayalsobegoneaswell.语篇解读：本文说明了在克隆灭绝动物的过程中遇到的重重困难与障碍。即使克隆成功了，其赖以生存的食物链也已经被破坏，被克隆出来的动物也无法继续生存下去。1．Itcanbelearnedfromthetextthat________.A．thegaurisanextinctspeciesB．thegaurlivesinAsiaandisendangeredC．scientistshaveclonedtheAfricanbo

8、ngoantelope政德才能立得稳、立得牢。要深入学习贯彻习近平新时代中国特色社会主义思想特别是习近平总书记关于“立政德”的重要论述，深刻认识新时代立政德的重要性和紧迫性。“讲忠诚、严纪律、立政德”三者相互贯通、相互联系。忠诚是共产党人的底色，纪律是不能触碰的底线，政德是必须修炼的素养。永葆底色、不碰底线D．boththecheetahandthegiantpandaliveinAsia解析：选B　细节理解题。