2024-2025学年高中英语Unit2Cloning单元加餐练习题含解析新人教版选修8

Unit2Cloning单元加餐练Ⅰ.完形填空Itwas1972,andIwasinsecondgrade.Intheclassroom,theteacher,MsBoyette,was__1__aloudtousfromIslandoftheBlueDolphins.Andwehadjustcometoapartofthebookwherethemaincharacterwastrainingawilddog.Iwaslistening,caughtupinthe__2__ofall.Notfarawayfromme,thereseatedaboywhoalwaysfrightenedor__3__others,soIwas__4__ofthisboy.WhileMsBoyettewasreading,Ilookedoverathim,forhewassomeoneIwasinthe__5__ofkeepinganeyeon.Inoticedthathewaslisteningtoo,thathewasengagedbythe__6__，andthathewasleaningforwardinhisseatandlisteningwithallhisheart.I__7__athim,open­mouthed.Iwas__8__withasuddenknowledgethatthisboywasinfactjust__9__me.Hewasakidwholikedastory.Theboymust__10__myeyesonhim,becauseheturned.Thensomething__11__happened.Hesmiledatme.__12__，Ismiledback,unafraid.Weweretwokidssmilingateachother.WhyhaveIneverforgottenthissmallmoment?WhydoIstill__13__everydetailofit?Ithinkit'sbecausethatmomentillustratessobeautifullythe__14__ofreadingoutloud.Itshowsusintoasaferoom,whereeveryoneinvolved,thereaderandthelistener,canhavethatchanceto__15__eachother.Wehumanslongnotjustforthestory,notjustfortheflowoflanguage,butfortheconnectionthatcomeswhenwordsarereadaloud.本文属于记叙文，讲解并描述了作者在一次朗读课上与自己胆怯 的男孩的关系发生了转变。作者把这种转变归功于朗读。1．A.shouting B．singingC．talking D．reading答案：D解析：依据后文可知，本文讲解并描述朗读的影响，故选D。2．A.wonder B．silenceC．warmth D．comfort答案：A解析：依据下文可知，作者被小说的奇异情节吸引住了，故选A。3．A.greeted B．touchedC．hurt D．refused答案：C解析：依据frightened可知，该男孩常常恐吓和损害他人，故选C。4．A.aware B．terrifiedC．bored D．guilty答案：B解析：依据前文的frightened可知，作者胆怯 这个男孩，故选B。5．A.habit B．formC．effort D．hope答案：A解析：依据前文可知，作者胆怯 那个男孩，习惯性地时刻提防他，故选A。inthehabitofdoingsth.养成做某事的习惯。6．A.speech B．storyC．journey D．diary答案：B解析：依据前文可知，老师正在给孩子们朗读故事，故选B。7．A.pointed B．noddedC．stared D．waved答案：C解析：依据语境可知，作者始终盯着男孩，故选C。8．A.struck B．mixedC．cheated D．confused答案：A解析：依据文章可知，此处表达作者突然意识到男孩其实跟自己一样，故选A。9．A.behind B．beyondC．around D．like答案：D解析：依据文章可知，作者意识到男孩其实跟自己一样，故选D。10．A.ignore B．feelC．meet D．observe答案：B解析：这个男孩感觉到了作者在看着他，因此转过了头。故选B。11．A.useful B．naturalC．serious D．amazing答案：D解析：依据后文Hesmiledatme.可知，男孩朝作者微笑了。结合前文内容可知，此处表达作者觉得很不行思议，故选D。12．A.Then B．AgainC．Instead D．Besides答案：A解析：男孩向作者微笑，作者之后也以微笑回报。故选A。13．A.seek B．organizeC．recall D．trust答案：C解析：由前一句WhyhaveIneverforgottenthissmallmoment？可知，作者还能回想起许多细微环节，故选C。14．A.power B．courageC．amusement D．ability答案：A解析：作者认为这是朗读的奇妙力气，故选A。15．A.cheer B．seeC．miss D．mention答案：B解析：依据文章可知，在听老师朗读时，作者看到了男孩内心真实的样子，故选B。Ⅱ.阅读理解Bytheendofthecentury，ifnotsooner，theworld'soceanswillbebluerandgreenerthankstoawarmingclimate，accordingtoanewstudy.Attheheartofthephenomenonlietinymarinemicroorganisms(海洋微生物)calledphytoplankton.Becauseofthewaylightreflectsofftheorganisms，thesephytoplanktoncreatecolourfulpatternsattheoceansurface.Oceancolourvariesfromgreentoblue，dependingonthetypeandconcentrationofphytoplankton.Climatechangewillfuelthegrowthofphytoplanktoninsomeareas，whilereducingitinotherspots，leadingtochangesintheocean'sappearance.Phytoplanktonliveattheoceansurface，wheretheypullcarbondioxide(二氧化碳)intotheoceanwhilegivingoffoxygen.Whentheseorganismsdie，theyburycarboninthedeepocean，animportantprocessthathelpstoregulatetheglobalclimate.Butphytoplanktonarevulnerabletotheocean'swarmingtrend.Warmingchangeskeycharacteristicsoftheoceanandcanaffectphytoplankton'sgrowth，sincetheyneednotonlysunlightandcarbondioxidetogrow，butalsonutrients.StephanieDutkiewicz，ascientistinMIT'sCenterforGlobalChangeScience，builtaclimatemodelthatprojectschangestotheoceansthroughoutthecentury.Inaworldthatwarmsupby3℃Andwhydoesthatmatter？Phytoplanktonarethebaseofthefoodweb.Ifcertainkindsbegintodisappearfromtheocean，Dutkiewiczsaid,“itwillchangethetypeoffishthatwillbeabletosurvive.”Thosekindsofchangescouldaffectthefoodchain.Whatevercolourchangestheoceanexperiencesinthecomingdecadeswillprobablybetoogradualandunnoticeable，buttheycouldmeansignificantchanges.“It'llbeawhilebeforewecanstatisticallyshowthatthechangesarehappeningbecauseofclimatechange，”Dutkiewiczsaid，“butthechangeinthecolouroftheoceanwillbeoneoftheearlywarningsignalsthatwereallyhavechangedourplanet.”本文是一篇说明文。调查表明，由于气候变暖，全球的海洋将会变得更蓝，更绿。1.Whatarethefirsttwoparagraphsmainlyabout?A．Thevariouspatternsattheoceansurface.B．Thecauseofthechangesinoceancolour.C．Thewaylightreflectsoffmarineorganisms.D．Theeffortstofuelthegrowthofphytoplankton.答案：B解析：段落大意题。文章第一段点题：由于气候变暖，全球的海洋将会变得更蓝，更绿。其次段介绍由于光从生物体反射的方式，这些浮游植物在海洋表面形成了五彩缤纷的图案，气候变更又使得这些浮游植物在某些区域加速生长而在其他地方有所削减，导致海洋表面的颜色变更。由此可知前两段讲了海洋颜色变更的缘由，故B项正确。2.Whatdoestheunderlinedword“vulnerable”inParagraph3probablymean?A．Sensitive. B．Beneficial.C．Significant. D．Unnoticeable.答案：A解析：词义揣测题。后一句提到，气候变暖变更了海洋的主要特点并能影响浮游植物的生长，因为它们要生长不仅仅须要阳光和二氧化碳，也须要养分。由此可知，这些浮游植物对海洋变暖很敏感，故A项正确。3.Whatcanwelearnfromthepassage?A．Phytoplanktonplayadecliningroleinthemarineecosystem.B．Dutkiewicz'smodelaimstoprojectphytoplankton'schanges.C．Phytoplanktonhavebeenusedtocontrolglobalclimate.D．Oceanswithmorephytoplanktonmayappeargreener.答案：D解析：推理推断题。文章倒数其次段提到这些浮游植物是海洋食物链的基础，假如某些种类的浮游植物消逝了，会影响能存活的鱼的类型，从而影响海洋食物链，所以A项“浮游植物在海洋生态中所起的作用越来越小”是不对的；Dutkiewicz的模型不是用来推断浮游植物的变更的，而是推断海洋的变更的，解除B项；浮游植物不是用来限制全球气候的，解除C项。由文章第四段信息“Butinsomewaters，suchasthoseoftheArctic，awarmingwillmakeconditionsriperforphytoplankton，andtheseareaswillturngreener.”可知浮游植物多的区域海水会变得更绿，故D项正确。4.Whatisthemainpurposeofthepassage?A．Toassesstheconsequencesofoceancolourchanges.B．Toanalysethecompositionoftheoceanfoodchain.C．Toexplaintheeffectsofclimatechangeonoceans.D．Tointroduceanewmethodtostudyphytoplankton.答案：C解析：目的意图题。文章主要论述了随着气候变暖，全球的海洋将会变得更蓝，更绿，即气候变更对海洋有影响，故C项正确。Ⅲ.读后续写Itwassomewherebetweenspringandsummer,andmymomandIweredrivingthroughthecountryside.Backthen,Iwas13yearsold,andalwaysfeltunhappywithmom.ButlittledidIknowthatthistripwasgoingtobeaspecialone.Apotofflowerssatinthebackseat,whoseheavenlyscentfilledthecar.Suddenly,inthemiddleofnowhere,mymompulledover.“Whatareyoudoing？”Icried,fearingthatthecarhadbrokendownandwe'dbestuckthere,sofarfromhome.Butthatwasn'tthecase.Mymomhoppedoutofthecar,grabbingtheflowersfromthebackseat.“It'lljustbeaminute，”shecalledbackthroughtheopenwindows.Myeyesimpatientlyskimmedtheedgeoftheroadbeforesettlingonalittlesignshowingthatitwasanursinghome.Ilookedbacktothebuilding,somewhatannoyed,asmymomreappeared,empty­handed.Beforeshestartedthecar,curiositydrovemetoask,“Doyouknowsomeonethere？”Sheshookherhead.“Thenwhatdidyoudowiththeflowers？”Shesmiledslightly,“Igavethemtothereceptionist.”“What？”Shelaughedatmyconfusion.“Itoldthereceptionisttogivetheflowerstowhoeverneededthem,especiallywhohasn'tgottenanyinawhile.”Ikeptsilentforamoment.Notlongafterwecontinuedourdriving,Ispokeagain,“Didyouleaveyourname？”Tothissheansweredinstantly，“No.Leavingflowersthereforsomeonewhowillappreciatethemmakesmefeelgood，whichisenoughofathank­youforme.”Suddenly,stillthinkingaboutMom'sdeeds,Iheardsomethingburstloudly.Itwasourcarthatbrokedown!Nothingcouldbeworse,becauseneithermymomnorIunderstoodhowtorepairit,andwedidn'tknowwherethegaragewas.Italsoseemedimpossibletowaitforanypasser­by,sincewehadseensofewalongtheway.留意：1．所续写短文的词数应为150左右；2．续写部分分为两段，每段的开头语已为你写好。答案Paragraph1：Wewereworryingaboutwhatcouldbedone.Butafterwaitinginvainforaconsiderabletime,momandIdecidedtowalkbacktheroadtothenursinghomeandseekhelp.God