2021年高考总复习 Unit 2Cloning Using Language单元测试 新人教教版选修8一、单词拼写（共1题）1.1Thenewaircrafthasperformedverywellinits_(最初的)trials.2Threeofthechickens_(孵出)today.3The_(羽毛)ofapigeoncanbringyougoodluck!4Hegavemea_(合理的)explanation.5I_(只是)suggestyoushoulddoitagain.6Sheputsome_(装饰)ontheChristmastree.7Thegreat_(缺点)tolivingnearamainroadisnoise.8Alittlebabyis_(不能的)towalkortalk.9ItstraditionalinEnglandtoeat_(火鸡)onChristmasDay.10Wetriedin_(徒劳的)topersuadehimtogowithus.二、选择题（共10题）1.Abrightideasuddenly_methatIcouldusethemoneyIsavedtohelpapoorstudentinthecountryside.AstruckBoccurredChappenedDhurt2.Cantyoukeepstill？Isitsofunny?Sorry.Icanhardlyresist_.AlaughingBtolaughCcryingDtocry3.Heisingood_foramanofhisage.AconditionBatmosphereCcaseDsituation4.Doyouoftengofishingatweekends?Notoften，Ionlygofishing_.AatonetimeBallthetimeCatatimeDfromtimetotime5.Heisa_personandwillunderstandyourdelay.AavailableBcomfortableCconvenientDreasonable6.Theworkwehavedonehasbroughtgreatbenefits.Wearehappythatoureffortsarenot_.AinuseBinneedCinvainDinorder7.Youhavenoideahowshefinishedtherelayrace_herfootwoundedsomuch.AforBwhenCwithDwhile8.AreyousurethatAliceishonest?No.Thats_aguessofours.AcertainlyBhardlyCmerelyDnearly9.Thedecisionhasbeenmade_thenewschoolbuildingbebuiltnextmonth.AwhyBhowCwhetherDthat10.IfeelsonervousabouttheNationalEnglishSpeechCompetitiontomorrow._.AIreallyenvyyouBGladtohearthatCSoundsgreatDTakeiteasy三、阅读理解（共2题）1.AteamofMichiganStateUniversity(MSU)researchershasdevelopedanew，moreefficientwayofcloningzebrafish，abreakthroughthatcouldhaveanimpactonresearchintohumanhealth.Zebrafisharequicklybecomingtheanimalofchoiceformanyresearchers.“Aftermice，theyarethemostcommonlyusedvertebrates，thatis，animalswithbackbones，ingeneticstudies，”saysJoseCibelli，theleaderoftheteam.“Theyareusedincancerandheartdiseaseresearchbecausetheyhavemanyofthesamegenesaspeoplehave.”Formorethan20years，zebrafishhavealsoservedasanexcellentmodelforunderstandingbothnormaldevelopmentandbirthimperfections.Morerecently，researchwithzebrafishhasextendedtomodelinghumandiseases.Traditionalcloningusesaneggandadonor(捐赠者)cell.TheDNAisremovedfromtheeggandreplacedbytheDNAtakenfromthedonor.Theresultingfishisanexactgeneticcopyofthedonor.InCibellistechnique，theeggisremovedfromthefemalezebrafishandplacedintheovarian(卵巢的)fluidofaChinooksalmon，anotherkindoffish，beforethedonorcellisplacedintotheegg.Thepreviousmethodsofcloningzebrafishhadverylowsurvivalrates.Withthenewtechnique，thenumberofclonedfishisincreasedby15percent.Whatmakeszebrafishsousefulinresearchisthattheireggsaretransparent(透明的)，makingthefishsdevelopmenteasytofollow.Improvingzebrafishcloningtechniquesisalsoimportantbecausecurrentlythemouseistheonlygoodmodelforgeneticresearch.“Sofarthemouseistheonlyanimalfromwhichyoucandeletegenesinareliableway，”Cibellisays.“Whatresearchersdoismutate(使变异)agene，destroyitsfunctioncompletely，andthenstudytheconsequences.”1.Whatdowelearnaboutzebrafishfromthetext?ATheycanbeusedtocurehumandiseases.BTheyhavebeenusedingeneticstudiesfor20years.CTheyaretheonlyvertebratesusedincloning.DTheirsurvivalratesareincreasedbythenewmethodofcloning.2.Researcherschoosezebrafishforgeneticresearchbecause_.AtheyhavethesamegenesashumanbeingsBtheyareakindofvertebrateCtheirgenescanbechangedDtheireggsareeasytoobserve3.WecaninferthefollowingfromthetextEXCEPTthat_.AthezebrafishcloningtechnologymayprovideanewmodelforgeneticresearchBmicewillnotbeusedingeneticresearchanymoreCexperimentalresultsonzebrafishmayapplytohumanbeingsDJoseCibelliledthenewresearchofcloningzebrafish4Whatsthetextmainlyabout?AHowcloninghasdeveloped.BAstudyofanewwaytoclonezebrafish.CAbreakthroughinresearchintohumanhealth.DZebrafish，thebestmodelforgeneticresearch.2.Withallthelowfatandfatfreeproductsonthemarket，youdthinkreducingfatintakewouldbethesurestwaytogreaterhealth.Infact，thereissuchathingastoolittlefat.Strangebuttrue：eatingwithoutfatcanleadtovitamindeficiencies(维生素缺乏症)Thatsbecausesomevitaminsrequirefattobetakenin