2019-2020学年高中英语 Unit 2 Cloning period 1 Warming Up

Period1WarmingUp&Reading(1)InthemovieJurassicPark,scientistsclonedinosaursbyusingtheDNAthatwaspreservedformillionsofyears.However,thereistroublewhenthecloneddinosaursturnoutfiercerandsmarterthanexpected.Candinosaursreallybecloned?Theoretically,theycan;allthatwouldberequiredisDNAfromanextinctdinosaurandacurrentlylivingcloselyrelatedspecieswhichwouldactasasurrogatemother(代孕母亲)．Actually,cloningisaphenomenonthatoccursnaturallyinawidevarietyofspecies.Wheneveryouseeapairofidenticaltwins,theyareexamplesofnature'sclones.Althoughscientistshavebeencloningcertainplantslikethecarrotquitesuccessfullyfordecades,attemptsatcloninganimalshavenotbeenassuccessful.However,theybeganlongbeforethebirthofDolly,thesheep—thefirstmammaltobesuccessfullycloned.Cloninghumansdoesgiverisetosomemisgivings,raisinganumberofmoralproblemsinvolved.Humancloningisbasicallyaboutcreatingagenetically(基因地)identicalcopyofapreviouslyexistingperson.Whywouldsomepeoplechoosetoclonehumanbeings?Well,generally,itcouldmakecouplesunabletohavebabieshavetheirownchildren.Replacingadeadchildisalsoanotherreasonwhysomepeoplehaveexpressedinterestinthetechnology.Ⅰ.识图填空forbid,twin,objection,procedure1．The________areverymuchalikeandit'sdifficultforustodistinguish.2．Wehavetofollowaseriesof__________tomakeafrogoutofpaper.3．Thissignmeansparkingis________here.4．Thecitizensmarchedtogethertoshowtheir________ofviolence.【答案】1．twins2．procedures3．forbidden4．objectionⅡ.中英匹配1．cast____________2．object____________3．obtain____________4．breakthrough________5．medium____________6．accumulate__________【答案】1．C2．E3．A4．F5．B6．DA．vt.获得；赢得B．n.媒介；手段；工具C．vt.扔；投；掷D．vt.&vi.积累；聚集E．vi.反对；不赞成F．n.突破Ⅲ.构词助记1．straight＋forward→__________adj.简单的；直接的；坦率的2．under＋take→__________vt.着手；从事；承担3．break＋through→__________n．突破4．carry＋ier→__________n．携带者；搬运工；运输工具5．al＋together→________adv.总共；完全地6．correct＋ion→________n．改正；纠正；修正【答案】1．straightforward2．undertake3．breakthrough4．carrier5．altogether6．correctionⅣ.短语填空infavourof,payoff,objectto,castdown1．Jackisreallyhavingahardtime—hecan'tearnenoughmoneyto________________(偿清)thedebts.2．AttheUNconference,Chinastrongly____________(反对)punishingtheArabiccountriesbyforce.3．Thepeopleare__________________(使沮丧)bymanyyearsofcivilwar.4．Areyou________________________(赞成)thegovernment'splantobuildmorerailwaylines?【答案】1．payoff2．objectedto3．castdown4．infavourofⅠ.通读课文，选择最佳答案()1.Thesheepthatdonatedthesomaticcellmostprobablylived________years.A．3B．6C．9D．12()2.Itcanbeinferredfromthepassagethataclonedanimal________.A．usuallylivesaslongastheoriginaloneB．usuallyliveslongerthantheoriginaloneC．usuallydiesearlierthantheoriginaloneD．isusuallyashealthyastheoriginalone()3.Inthesecondparagraph,theword“straightforward”means________.A．uncomplicatedB．honestC．frankD．difficult()4.Whatispeople'sfearabouthumancloning?Whichofthefollowingiswrong?A．ClonedHitlerswoulddoharmtotheworld.B．Clonedpeoplemaybekilledatwillformedicalaid.C．Awomanwouldhavedifficultyrecognizingherrealhusband.D．Menwilldieoutbecauseawomancangivebirthtoababywithoutahusband.()5.Whatisthewriter'sattitudetowardcloninginthispassage?A．Thewriterisagainstcloning.B．Thewriterisinfavorofcloning.C．Thewriterdoesnotstateanypersonalopinionaboutcloning.D．Thewriterisinagreementwithcloning.【答案】1～5DCADCⅡ.精读课文，完成下表DefinitionCloningisawayofmakinga(n)1．________ofanotheranimalorplant.Majorusesofcloning●Gardenersuseittoproduce2．______quantitiesofplants.●Itisvaluableforresearchonnewplantspeciesandfor3．______researchonanimals.AboutDollythesheep●Encouragingnews:Dollydeveloped4．______.●Disturbingnews:Dollybecameseriously5．______andlivedsixandahalfyears,halfthelengthofthelifeofthe6．______sheep.Argumentsovercloning●Newspaperswroteof7．______hopingtoclonethemselvestoattaintheirambitionsandreligiousleadersraised8．______questions.●Somegovernments9．______researchintohumancloningwhileotherscontinuedtoaccumulate10．______oftheabundantmedicalaidcloningcouldprovide.【答案】1．exactcopy2．commercial3．medical4．normally5．ill6．original7．evilleaders8．moral9．forbade10．evidenceⅢ.难句分析1．Althoughatpresenthumaneggcellsandembryosneededforcloningresearcharedifficulttoobtain，newspaperswroteofevilleadershopingtoclonethemselvestoattaintheirambitions.本句的主干是____________________。although引导的______________从句中，neededforcloningresearch是过去分词短语作__________，修饰humaneggcellsandembryos。在主句中，hopingtoclonethemselvestoattaintheirambitions是动词ing形式短语作后置定语，修饰________。2．Somebegantoreformtheirlegalsystemsandforbaderesearchintohumancloning,butothercountrieslikeChinaandtheUK,continuedtoaccumulateevidenceoftheabundantmedicalaidthatcloningcouldprovide.本句是一个由________连接的并列句。第一个分句中有两个并列的谓语动词：began和________。第二个分句中，that引导定语从句，修饰先行词medicalaid。3．However,scientistsstillwonderwhethercloningwillhelporharmusandwhereitisleadingus.本句的主句是______________。whether和where分别引导两个从句，作wonder的________。【答案】1．newspaperswroteofevilleaders；让步状语；后置定语；evilleaders2．but；forbade3．scientistsstillwonder；宾语Ⅳ.根据课文把短文补充完整Cloningisawayofmakingan1.________copyofanotheranimalorplant.Cloningplantsis2.________butthecloningofanimalsismoredifficultto3.________.Evenso,thedetermina