2024-2025學(xué)年高中英語(yǔ)Unit2Cloning單元加餐練課時(shí)作業(yè)含解析新人教版選修8

Unit2Cloning課時(shí)作業(yè)8單元加餐練Ⅰ.單詞拼法1．You'vehadagreatbreakthrough(突破)togetbetterunderstandingofit.2．Hecouldn'tresist(抗拒)showingoffhisnewcar.3．Imerely(只是)suggestedyoushoulddoitagain.There'snoneedtogetannoyed.4．Shewasfinedfordrivingabovetheregulation(規(guī)定)speed.5．Theproblemhasbeenbothering(困擾)meforseveralweeks.6．Theyhavejustfinishedthedecoration(裝飾)ofthebathroom.7．WhenJim'suncleretired(退休)fromtherailwaycompany,hewasgivenagoldwatch.8．Manycasesarehandledwithoutstrictlyfollowinglegalprocedure(程序)insomecountries.9．Theteacheriscapableofmakingcomplicatedproblemsstraightforward(簡(jiǎn)潔的)forthestudentstoaccepteasily.10．Lackoftimeforbids(禁止)anyfurtherdiscussionatthepoint.Ⅱ.選詞填空ingoodcondition,hasagreatimpacton,beboundto,payoff,castdown,invain,bringbacktolife,fromtimetotime,infavourof,oone'sheart1．Keeponworkinghardlikethis,andyourresearchis_bound_toobtaingreatsuccess.2．Atlastthedeterminationandpatienceofscientistspaid_off.3．MountTaistruckitsbeautyinto_her_heartandshedecidedtovisititagainthenextyear.4．Hisparentstriedtopersuadehimnottogiveuphiswell-paidjob,buttheireffortswerein_vain.5．Jackwantedtobeinformedfrom_time_to_timehowJanewasgettingalong.6．Toavoidaccidents,it'simportanttocheckthatallyourtoolsarein_good_conditionbeforestarting.7．Findingoutthetruththathewascheatedbyhisbrothermadehimcast_down.8．Inancienttimes,peoplebelievedthattheycouldbe_brought_back_to_lifeafterdeath.9．Astoeducation,mostspecialistsarein_favour_offurtherreform.10．Internethas_a_great_impact_onoursociety,life,wayofthinkingandvalue.Ⅲ.補(bǔ)全句子1．ThechildrenbegantowatchTVwith_their_homework_done.孩子們完成作業(yè)以后起先看電視。2．Does_it_bother_youthatthatmanisalwaysaskingtolendhimmoney?那個(gè)人總是借錢，你是不是覺(jué)得不自由？3．Theyagreedtolendusthecaron_condition_that_we_returned_it_before_the_weekend.他們同意把車借給我們，條件是我們必需在周末前歸還。4．Hungry_and_tired,_Ihadtostoptohavearest.又累又餓，我只好停下來(lái)休息一下。5．Wetwohave_so_much_in_commonthatweshouldgetalongverywell.我們兩個(gè)有這么多的共同點(diǎn)，我們應(yīng)當(dāng)能相處得特別好。6．Didn'tit_occur_to_youthathemightbeinterestedinit?你當(dāng)時(shí)沒(méi)有想到他可能對(duì)此事感愛(ài)好嗎？Ⅳ.單元語(yǔ)法專練1．Wedon'tunderstandtheproblemwhy_this_is_the_best_choice.我們不明白這個(gè)問(wèn)題，為什么這是最好的選擇。2．The_advantage_of_shopping_online_is_thatyoucangeteverythingyouwantwithoutgoingoutside.網(wǎng)上購(gòu)物的好處是你可以足不出戶就可以買到你想要的一切。3．There_is_no_possibility_thatBobwillcomefirstinthefollowingEnglishcompetition.Bob在即將到來(lái)的英語(yǔ)競(jìng)賽中不行能獲一等獎(jiǎng)。4．Thefactthat_the_money_has_gonedoesnotmeanitwasstolen.那筆錢不見(jiàn)了這一事實(shí)并不意味著是被偷了。5．Thequestionwhether_he'll_attend_the_meetingisnotdecided.他是否參與會(huì)議這個(gè)問(wèn)題還沒(méi)確定。Ⅰ.閱讀理解HaveyouseenJurassicParkButcouldwereallycloneendangeredanimals?Todate,themostsuccessfulattempttodosowasthecloningofagaur,arareox-likeanimalfromsoutheastAsia.Scientistsusedacowtobringtheclonedbabygaur,namedNoah.Twodaysafterbirth,however,Noahdiedfromacommonbacterialinfection.OtherendangeredspeciesthatmaybeclonedincludetheAfricanbongoantelope(羚羊),theSumatrantiger,thecheetah(獵豹),andthegiantpanda.Next,couldwereallycloneextinctanimals?Intheory?Yes.Todothis,youneedawell-keptsourceofDNAfromtheextinctanimalssuchaswoolmammoth(毛象),Tasmaniantiger,orevendinosaur,andacloselyrelatedspecies,stillliving,whichcouldserveasa_surrogate_mother.Inreality?Probablynot.Ontheonehand,it'snotlikelythatextinctanimals'DNAcouldsurviveundamagedforsuchalongtime.Cloningsuchextinctanimalsaswoolmammoth,Tasmaniantiger,ordinosaurismuchmoredifficultduetothelackofproperlywell-preservedDNA.Ontheotherhand,forexample,agaurcanhaveacowasasurrogatemother,definitelynotamonkey.Butwhataboutanextinctanimalasuniqueasthepanda?Whatspeciescouldpossiblyserveasasurrogatemother?Cloningpresentsmanyexcitingpossibilities.However,evenifextinctanimalswerebroughtback,theycouldnotsurviveintoday'sworld.Notonlydomostextinctanimalshavenohabitattolivein,buttheotherplantsandanimalstheydependedonforfoodmayalsobegoneaswell.本文說(shuō)明白在克隆滅亡動(dòng)物的過(guò)程中遇到的種種困難與障礙。即使克隆勝利了，其賴以生存的食物鏈也已經(jīng)被破壞，被克隆出來(lái)的動(dòng)物也無(wú)法接著生存下去。1．Itcanbelearnedfromthetextthat________.A．thegaurisanextinctspeciesB．thegaurlivesinAsiaandisendangeredC．scientistshaveclonedtheAfricanbongoantelopeD．boththecheetahandthegiantpandaliveinAsia答案：B解析：細(xì)微環(huán)節(jié)理解題。依據(jù)其次、三段可知，印度野牛生活在亞洲的東南部，面臨滅亡。故B項(xiàng)正確。2．Theunderlinedwords“asurrogatemother”probablyrefertoafemalewho________.A．givesbirthtoababyofitsownB．cannotgivebirthtoababyC．givesbirthtoababyforanotherfemaleD．providesDNA答案：C解析：詞義揣測(cè)題。依據(jù)第五段的描述可知，此處表示的是，把一種動(dòng)物的DNA提取出來(lái)之后，在另外一種動(dòng)物的體內(nèi)進(jìn)行胚胎繁殖，而這種動(dòng)物就被稱為asurrogatemother，由此推斷，畫線部分意思為“代孕媽媽”，故C項(xiàng)正確。3．Thedifficultyincloninganextinctspeciesisthelackof________.A．boththewell-preservedDNAandasurrogatemotherB．boththehabitattoliveinandthewell-preservedDNAC．boththewell-preservedDNAandplantstoliveonD．boththehabitattoliveinandplantstoliveon答案：A解析：細(xì)微環(huán)節(jié)理解題。依據(jù)文章倒數(shù)其次段中的“Ontheonehand...Ontheotherhand...”兩個(gè)方面的表述可知，克隆的困難在于一是要找尋滅亡動(dòng)物的保存完好的DNA，二是要找尋到合適的代孕的物種，故A項(xiàng)正確。4．Intheauthor'sopinion,itispossiblethat________.A．a(chǎn)lltheextinctspeciesmaybeclonedB．extinctspeciesmaybeclonedandeasilysurviveC．a(chǎn)gaurcanhaveamonkeyasasurrogatemotherD．someextinctspeciesmaybecloned,butnotsurvive答案：D解析：細(xì)微環(huán)節(jié)理解題。本文作者客觀敘述了在克隆滅亡動(dòng)物過(guò)程中所存在的種種困難與障礙。依據(jù)最終一段的表述可知，或許克隆滅亡動(dòng)物存在眾多的可能性，但是即使克隆勝利了，或許會(huì)由于其賴以生存的食物鏈已經(jīng)被破壞而無(wú)法接著存活下去。由此推斷D項(xiàng)正確。Ⅱ.讀后續(xù)寫閱讀下面材料，依據(jù)其內(nèi)容和所給段落開(kāi)頭語(yǔ)續(xù)寫兩段，使之構(gòu)成一篇完整的短文。續(xù)寫的詞數(shù)應(yīng)為150左右。IwillsharethekindactthatImetwithallofyou.Wehaddozensofrestaurantoptionswithinashortdistance,soweoftentookadvantageofthisluxury.Ononeoccasion,Iranouttogetsomefood.IsawthecloudsinthedistanceanddecidedIcouldmakeitthereandcomebackintime,butIwaswrong.Iwasabouttoleavetherestaurantwhentherainjustpoured.Thestreetwasfloodedwithinminutes.ButIhadmylittlegirlandhusbandwaitingformebackathome,andtheywerehungry,soIknewIhadtomakearunforit.Theowneroftherestauranttriedtoencouragemetowaitinside,butIinsistedthatIshouldgo.Atthispoint,hegrabbedhisumbrellaandsaid,“Okay,let'sgo.”O(jiān)fcourseItriedtoconvincehimthatitwasn'tnecessaryforhimtowalkmehome,butIknewIwouldn'tpreventhimfromdoingso.Sooffwewent.Wequicklyrealizedthattheumbrellawouldn'thelpmuchinkeepingusdry.Hewalkedmeallthewaytomyapartmentbuilding,wherehesaidgoodbyeandranbacktotherestaurant.AgainIencounteredthisactofkindnesswhenIwasmakingmywaytothebus.AsIwaitedatthecrosswalk,itbegantorainlightly.Nothingwastoobad,butayoungguynearbyfeltlikeitwasheavyenoughtomakehimstepnexttomeandholdhisumbrellaabovebothofus.Afterawhile,thelightsturnedgreen.Ithankedhimandwalkedacrossthestreet.Gettingaroundthecitywhenyouaresixmonthspregnantandhaveatwo-year-oldkidcanbechallengingsometimes.Onespringafternoon,IrealizedIneededsomethingfromthestore