大學英語六級完型填空真題(-)大學英語六級完型填空真題(-)大學英語六級完型填空真題(-)大學英語六級-選詞填空專項訓練CET6-cloze-2021-6-1Let'ssayyouloveroller-skating.Justthethoughtof__26__onyourroller-skatesbringsasmiletoyourface.Youalsoknowthatroller-skatingisexcellentexercise.Youhavea__27__attitudetowardit.Thisdescriptionofroller-skating__28__thethreecomponentsofanattitude:affect,cognition,andbehavior.Youlovetheactivity;it'sgreatfun.Thesefeelings__29__theaffectiveoremotionalcomponent;theyareanimportantingredientinattitudes.Theknowledgewehaveabouttheobjectconstitutesthecognitivecomponentofanattitude.Youunderstandthehealth__30__thattheactivitycanbring.Finally,attitudeshaveabehavioralcomponent.Ourattitudes__31__ustogooutsidetoenjoyroller-skating.Now,wedon'twanttoleaveyouwiththe__32__thatthesethreecomponentsalwaysworktogether__33__.Theydon't;sometimestheyclash.Forexample,let'ssayyoulovepizza(affectivecomponent);however,youhavehighcholesterolandunderstand(knowledgecomponent)thateatingpizzamaybebadforyourhealth.Whichbehaviorwillyourattituderesultin,eatingpizzaor__34__it?Theanswerdependsonwhichcomponenthappenstobestronger.Ifyouarewalkingpastapizzarestaurantatlunchtime,youremotionsandfeelingsprobablywillbestrongerthanyourknowledgethatpizzamaynotbethebestfoodforyourhealth.Inthatinstance,youhavepizzaforlunch.Ifyouareathometryingtodecidewheretogofordinner,however,theknowledgecomponentmay__35__,andyoudecidetogowhereyoucaneatahealthiermeal.KEY:26[N]空格前的of說明此處應填入動名詞，與介詞on搭配。空格后的roller-skates指“滑冰鞋〞，詞庫的動名詞中，strapping可與on搭配，后接表示鞋子的賓語，意為“用帶子系上(鞋子〕〞，切合此處語境。27[I]此處需填入修飾attitude的詞，由a可知需填入的單詞是輔音字母開頭的。上文提到“你〞喜愛溜旱冰，穿上鞋子就淺笑。“你〞相同知道溜旱冰是很好的運動，所以這類態度是踴躍正面的，故填入positive“踴躍的〞。28[D]此處應填入謂語動詞，由主語description可知是第三人稱單數形式。文章開頭的Let'ssay...說明第一段對溜旱冰的描述是舉例，所以此處切合語義邏輯的是illustrates說明“，說明〞，該處句子的意思是“對溜旱冰的描陳述了然態度有三個構成局部〞。29[C]此處應填入謂語動詞，由主語feelings可知是動詞原形。本句要說明態度的第一個局部affect感情“〞，主語thesefeelings指的是對溜旱冰這項活動的喜愛之情，highlight“重申，突出〞與賓語theaffectiveoremotionalcomponent感情“或感情局部〞搭配合理。而prevail流“行，流行；獲勝〞是不及物動詞,prompt推“動；提示〞在語義上也不合邏輯。30[B]空格在名詞health以后，可能填入副詞或名詞。由于空格后的thattheactivitycanbring“這項活動可以帶來的〞是定語從句，故應填入名詞，充任從句先行詞。第一段提到“你〞知道溜旱冰是極好的運動(excellentexercise)，所以本句填入語義有關的benefits利處“〞。131[L]此處應填入謂語動詞，構成～sb.todosth.構造，主語attitudes說明該詞是原形。切合要求的是prompt“促進〞，句子意思是“我們的態度促進我們去外面享受溜旱冰的樂趣〞。32[E]空格前的the說明此處應填入名詞，空格后that指引的是同位語從句，意為“這三個構成局部老是協調一致的〞。impression“印象〞切合上下文語義，指“我們不想給你留下這類印象〞呼，應后文“它們其實不是〞。33[H]空格在worktogether以后，故應填入副詞。perfectly完滿“地〞切合語境，指這三個局部配合完滿。上下文沒有表示動作先后的描述，故primarily主“要地，第一〞不對。34[A]由or可知此處應填入與eating并列的動名詞，意思上表示相反的狀況，所以avoiding避“免〞正確，指“吃比薩仍是不吃〞。35[J]空格前的may說明此處應填入動詞原形，且是不及物動詞。上一句提到感情局部可能更強的情況〔probablywillbestronger〕，本句指認知局部更強的狀況，故填入與bestronger近義的prevail獲“勝〞。CET6-cloze-2021-6-2Questions26to35arebasedonthefollowingpassage.Theroboticsrevolutionissettobringhumansfacetofacewithanoldfear—man-madecreationsassmartandcapableaswearebutwithoutamoralcompass.Asrobotstakeonevermorecomplexroles,thequestionnaturally26__________:Whowillberesponsiblewhentheydosomethingwrong?Manufacturers?Users?Softwarewriters?Theanswerdependsontherobot.Robotsalreadysaveustime,moneyandenergy.Inthefuture,theywillimproveourhealthcare,socialwelfareandstandardofliving.The27__________ofcomputationalpowerandengineeringadvanceswill28__________enablelower-costin-homecareforthedisabled,29__________useofdriverlesscarsthatmayreducedrunk-anddistracted-drivingaccidentsandcountlesshomeandservice-industryusesforrobots,fromstreetcleaningtofoodpreparation.Butthereare30__________tobeproblems.Robotcarswillcrash.Adrone(遙控飛翔器)operatorwill31__________someone'sprivacy.Aroboticlawnmowerwillrunoveraneighbor'scat.Juriessympathetictothe32__________ofmachineswillpunishentrepreneurswithcompany-crushing33__________anddamages.Whatshouldgovernmentsdotoprotectpeoplewhile34__________spaceforinnovation?Big,complicatedsystemsonwhichmuchpublicsafetydepends,likedriverlesscars,shouldbebuilt,35__________andsoldbymanufacturerswhotakeresponsibilityforensuringsafetyandareliableforaccidents.Governmentsshouldsetsafetyrequirementsandthenletinsurerspricetheriskoftherobotsbasedonthemanufacturer'sdrivingrecord,notthepassenger's.A.arisesB.ascendsC.boundD.combinationE.definiteF.eventuallyG.interfereH.invadeI.manifestingJ.penaltiesK.preservingL.programmedM.proximatelyN.victimsO.widespread閱讀參照答案26[A]空格位于句末，前面是副詞naturally和主語thequestion,所以應填入不及物動詞，充任句子謂語。由As從句中takeon所用的一般此刻時，可知填入的動詞應是第三人稱單數。上文提到人們害怕機器人缺乏道德界線(withoutamoralcompass),空格后是詳細的問題，所以本句應表示問題自然“出現，惹起〞，故arises符合要求。另一個第三人稱單數動詞是ascends“上漲；登攀〞，與question搭配不妥。227[D]由空格前的the和空格后的of可知此填入名。介of后是兩個并列的名構：computationalpower“算能力〞和engineeringadvances“工程學展〞。由此可著名中combination“合體〞切合。28[F]空格位于助will和enable之，故填入副。本句表示某物能降低殘疾人的家庭理用。副中切合的是eventually“于，最〞。29[O]空格在名use之前，故填入形空或分。本句的構是...useofdriverlesscarsandcountless...usesforrobots,所以填入的與countless“無數的〞有關，指運用得“多〞或“廣〞，故填入widespread“寬泛的，廣泛的〞指，機器人最將廣泛運用在無人汽、家用和服等方面。30[C]空格填入分或形容，構成be...to的搭配。上文提到機器人最會廣泛運用，本句用but折，提到problems“〞，接著下文列了詳細的，所以空格填入bound“必定的，必定的〞，指“肯定會有〞。31[H]空格前的will說明此填入及物原形，與后邊的名privacy“私〞構成搭配。invade“入侵，入侵〞切合要求，指無人機可能會“入侵〞人的私。32[N]空格在the和of之，故填入名。本句指陪機器的??表示憐憫，會企家遇到。上文機器人會生碰撞，無人機入侵私，機器人割草機居家的貓。些都是機器的“受害者〞，故victims“受害人，牲品〞切合。33[J]空格前的company-crushing是復合形容，表示“令企業力大的，可摧企業的〞，故填入與damages“金〞并列的名，形式上也是復數，作punish的接。故penalties“金〞切合要求。34[K]空格前的while是，故填入名形式。由space“空〞可，知搭配適合的是preserving“保，保留〞，句子意：政府在新“保留〞空，做些什么來保人呢？35[L]空格與去分built和sold并列，故也是表被的去分形式。本句指大型復系(systems)由廠商建??并售。切合、并與systems搭配的是programmed“劃〞。CET6-cloze-2021-6-3Questions26to35arebasedonthefollowingpassage.Pursuingacareerisanessentialpartofadolescentdevelopment."Theadolescentbecomesanadultwhenhe26__________arealjob."TocognitiveresearcherslikePiaget,adulthoodmeantthebeginningofan27__________.Piagetarguedthatonceadolescentsentertheworldofwork,theirnewlyacquiredabilitytoformhypothesesallowsthemtocreaterepresentationsthataretooideal.The28__________ofsuchideals,withoutthetemperingoftherealityofajoborprofession,rapidlyleadsadolescentstobecome29__________ofthenon-idealisticworldandtopressforreforminacharacteristicallyadolescentway.Piagetsaid:"Trueadaptationtosocietycomes30__________whentheadolescentreformerattemptstoputhisideastowork."Ofcourse,youthfulidealismisoftencourageous,andnoonelikestogiveupdreams.Perhaps,taken31__________outofcontext,Piaget'sstatementseemsharsh.Whathewas32__________,however,isthewayrealitycanmodifyidealisticviews.Somepeoplerefertosuchmodificationasmaturity.Piagetarguedthatattainingandacceptingavocationisoneofthebestwaystomodifyidealizedviewsandtomature.Ascareersandvocationsbecomelessavailableduringtimesof33__________,adolescentsmaybeespeciallyhardhit.Suchdifficulteconomictimesmayleavemanyadolescents34__________abouttheirrolesinsociety.Forthisreason,communityinterventionsandgovernmentjobprogramsthat3offersummerandvacationworkarenotonlyeconomically__35__butalsohelptostimulatetheadolescent'ssenseofworth.A.automaticallyB.beneficialC.capturingD.confusedE.emphasizingF.entranceG.excitedH.existenceI.incidentallyJ.intolerantK.occupationL.promisesM.recessionN.slightlyO.undertakes閱讀參照答案26[O]空格所在句子為when指引的時間狀語從句，從句中缺乏謂語動詞，且依據主句中謂語動詞becomes可進一步確立此處應填入動詞的第三人稱單數。賓語是arealjob,undertakes“承擔;從事〞切合語境，句子表示從事一份真實的工作時，他〔她〕才真實步人成年人的隊列。而promises“許諾〞不切合語義邏輯。27[K]空格前面的不定冠詞an決定了此處應填入一個首發音是元音的名詞。上句提到，青少年真實步入成年人隊列是當他從事一份真實的工作時，也就是說成年意味著一份職業的開始,故填入occupation“職業〞適合。28[H]空格前面的the和后邊的of決定了此處應填入名詞，和后邊的ofsuchideals搭配。existence“存在〞切合語義邏輯，表示這些理想的存在。29[J]空格前面是動詞become,可判斷此處應填入形容詞或名詞。前面提到青少年會產生一些過于理想化的想法，那么關于這個不那么理想的世界應當是“接受不了〞或“難以忍耐的〞，故填intolerant“沒法忍耐的〞。30[A]空格位于動詞comes以后，when指引的狀語從句以前，所在句子不缺乏主要成分，可判斷此處需要填入副詞。從邏輯上推測，當青少年改革者試圖將他的想法付諸工作實踐時，對社會的真實適應就是自但是然的了，故automatically“自動地；自但是然地〞切合語境。31[N]空格所在局部為一個固定短語take...outofcontext,意為“斷章取義，離開上下文〞其，中take的賓語應是句子的主語Piaget'sstatement,所以該過去分詞短語在句子中作狀語，且不缺乏主要成分，由此可判斷此處需要填入一個副詞。本句要說明在什么狀況下，皮亞杰的論斷也許太甚苛刻，填入slightly“稍微地〞適合，意為“略加孤立地看〞。32[E]空格所在局部為what指引的主語從句，從句缺乏謂語動詞，由前面的助動詞was可判斷此處應填入動詞的此刻分詞形式,本句的表語是theway“那種方式〞。emphasizing“重申〞切合語境，表示他意在重申的是那種方式。33[M]空格前面的of決定了此處應填入名詞或動名詞形式。就業崗位愈來愈少，所以應當是處于冷清時期，且依據下文difficulteconomictimes也可判斷出recession“衰敗〞切合語義邏輯。34[D]空格所在局部為“leavesb.+賓語補足語〞構造，空格填入的單詞作leave的賓補，且能與后邊的about搭配，可判斷此處應填入形容詞或動詞的分詞形式。處于這樣的經濟困難時期，好多青少年也許對他們在社會中飾演的角色應當是“迷惑〞或“疑惑〞的，詞庫中切合這一語義的是confused“疑惑的；雜亂的〞。35[B]空格所在句子缺乏謂語，由前面的助動詞are可判斷此處應填入形容詞或動詞的分詞形式。依據主語communityinterventionsandgovernmentjobprograms和空格前的economically,可知填入beneficial“有利的〞，表示社區干涉和政府供給的就業方案不單使青少年在經濟上受益。CET6-cloze-2021-12-14Questions26to35arebasedonthefollowingpassage.Itisimportantthatscientistsbeseenasnormalpeopleaskingandansweringimportantquestions.Good,soundsciencedependson26,experimentsandreasonedmethodologies.Itrequiresawillingnesstoasknewquestionsandtrynewapproaches.Itrequiresonetotakerisksandexperiencefailures.Butgoodsciencealsorequires27understanding,clearexplanationandconcisepresentation.Ourcountryneedsmorescientistswhoarewillingtostepoutinthepublic28andoffertheiropinionsonimportantmatters.Weneedmorescientistswhocanexplainwhattheyaredoinginlanguagethatis29andunderstandabletothepublic.Thoseofuswhoarenotscientistsshouldalsobepreparedtosupportpublicengagementbyscientists,andto30scientificknowledgeintoourpubliccommunications.Toomanypeopleinthiscountry,includingsomeamongourelectedleadership,stilldonotunderstandhowscienceworksorwhyrobust,long-rangeinvestmentsinresearchvitallymatter.Inthe1960s,theUnitedStates31nearly17%ofdiscretionary(可酌情支配的)spendingtoresearchanddevelopment,32decadesofeconomicgrowth.By2021,thefigurehadfallenintothesingle33Thisoccursatatimewhenothernationshavemadesignificantgainsintheirownresearchcapabilities.AttheUniversityofCalifornia(UC),we34ourselvesnotonlyonthequalityofourresearch,butalsoonitscontributiontoimprovingourworld.To35thedevelopmentofsciencefromthelabbenchtothemarketplace,UCisinvestingourownmoneyinourowngoodideas.A.ArenaB.contextualC.ConvincingD.devotedE.DigitsF.hastenG.HypothesesH.impairingI.IncorporateJ.indefiniteK.IndulgeL.inertiaM.PrideN.reapingO.Warrant名：A.arena舞臺，技；數字；假；性，惰性；授，授令：獻身于，把??用于；F.hasten加快；害；歸并，使并入；放，使沉迷于；以??豪；收形容：上下文的，情境的，前后關的；有服力的，令人服氣的；不確立的26．G.hypotheses。27．B.contextual。28．A.arena。空格位于形容以后，據此判斷可填入名，并與public用構成固定搭配。故推句意“我的國家需要更多科學家登上公共舞臺〞。所以填入A.arena“舞臺，技〞。在中，digitS意5“數字〞，inertia意“性，惰性〞，warrant意“授，授令〞，均不切合文意，且不可以與public搭配，故清除。29．。空格位于以that引的定從句中，此定從句使用了主系表構，據此判斷填入形容，且此形容能夠用來修language“言〞。依據句意“他能用令人服氣而且人聽得懂的言，民眾解自己的所作所〞可知，答案“有服力的，令人服氣的〞。在中，indefinite意“不確立的〞，與文意相反，故清除。30．。31．D.devoted。32．N.reaping。空格位于句子的主體構以外，描述主句所引的果，屬于果狀成分，據此判斷可填人在分。依據句意“美國將大17％的可支配收入用于科學研究，________了數十年的增〞可知，答案“收〞。在中，impairing意“害〞，不切合文意，故清除。33．E.digits。34．M.pride。空格位于句子的，且此能與on構成固定搭配，中只有以“??豪〞，切合法要求。所在旬意“我不我的科研量驕傲，也我的科研改世界所做出的獻驕傲〞。在中，hasten意“加快〞，indulge意“放，使沉迷于〞，均與文意不符，故清除。35．F.hasten。CET6-cloze-2021-12-2CET6-cloze-2021-12-3CET6-cloze-2021-6-1Let’sallstopjudgingpeoplewhotalktothemselves.Newresearchsaysthatthosewhocan’seemtokeeptheirinnermonologues(獨白)inareactuallymorelikelytostayontask,remain__26__betterandshowimprovedperceptioncapabilities.Notbad,really,forsomeextramuttering.AccordingtoaseriesofexperimentspublishedintheQuarterlyJournalofExperimentalPsychologybyprofessorsGaryLupyanandDanielSwignley,theactofusingverbalcluesto__27__mentalpictureshelpspeoplefunctionquicker.Inoneexperiment,theyshowedpicturesofvariousobjectstotwenty__28__andaskedthemtofindjustoneofthose,abanana.Halfwere__29__torepeatoutloudwhattheywerelookingforandtheotherhalfkepttheirlips__30__.Thosewhotalkedtothemselvesfoundthebananaslightlyfasterthanthosewhodidn，the’ｔresearcherssay.Inotherexperiments,LupyanandSwignleyfoundthat__31__thenameofacommonproductwhenonthehuntforithelpedquickensomeone’stalkingaboutuncommonitemsshowednoadvantageandslowedyoudown.Commonresearchhaslongheldthattalkingthemselvesthroughataskhelpschildrenlearn,althoughdoingsowhenyou’ve__32__maturedisnotagreatsignof__33__.Thetwoprofessorshopetorefutethatidea,__34__thatjustaswhenkidswalkthemselvesthroughaprocess,adultscanbenefitfromusinglanguagenotjusttocommunicate,butalsotohelp“augmentthinking6Ofcourse,youarestillencouragedtokeepthetalkingatlibrarytonesand,whateveryoudo,keeptheinformationyousharesimple,likeagrocerylist.Atany__35__,there’sstillsuctoomuchinformation.【分析】F。空格前的remain系，所以空格需要填入一個形容；依據前面的句意“??更有可能持做一件事〞，可知focused最切合，表示“保持全神注〞，所以本F。27.【分析】L。依據空格前的to可判斷空格填入原形，依據句意，“使用口提示來像〞，可知L切合。28.【分析】0。空格前是量twenty，所以空格需填入一個名復數；再由前的“Inoneexperiment可〞知是一個，所以里volunteers〔志愿者〕最適合，故本0。【分析】H。空格前后分bewere和介to，所以空格需要填入一個的被；依據句意，“一半人被_____要高聲地重復他要找的西，〞可知instructed〔通知，指〕最適合，所以本答案H。30.【分析】J。依據句子構可判斷空格需要填入一個形容。再由theotherhalf的是前的Half，可知里的狀況和前的不一樣，前repeatoutloud〔高聲地重復〕，后自然就是要表達“不〞的意思，keepone’slipssealed即“上嘴巴、不〞的意思，故本J。31.【分析】M。空格前的that引的是從句，空格與后邊的名thenameofacommonproduct共同充任從句的主，所以空格填入的-ing形式，依據句意可判斷uttering更適合，故本M。32.【分析】A。空格所在句是一個在達成，空格前后成havematured，所以空格上其實不缺成分，只可能填入一個副來修matured，依據意思，里apparently。【分析】C。依據空格前的agreatsignof可知，空格缺乏一個名；再依據句意，“當你足成熟，自言自其實不可以示出你的_____〞，可知里填入brilliance更適合。故本C。34.【分析】D。空格前是一句完好的，空格后是that從句，由此判斷空格填入的-ing形式，作前句子的陪伴狀，并引后邊的從句；剖析，的-ing形式只剩下claiming一個，故本D。35.【分析】N。空格需要填入一個名，與前的Atany構成介；合整篇文章的粗心，此填入volume最適合，故本N。2021年6月六考真(第2套)CET6-cloze-2021-6-2AfterbecomingpresidentofPurdueUniversityin2021,MitchDanielsaskedthefacultytoprove7thattheirstudentshaveactuallyachievedoneofhighereducation’smostimportantgoalthinkingskills.Twoyearsbefore,anationwidestudyofcollegegraduateshadshownthatmorethanathirdhadmadeno26gainsinsuchmentalabilitiesduringtheirschoolyears.Mr.Danielsneededto27thehighcostofattendingPurduetoitsstudentsandtheirfamilies.Afterall,thepercentageofAmericanswhosayacollegedegreeis“veryimportant〞hashefallenlast285-6inyearst.Purduenowhasapilottesttoassessstudentscritical’thinkingskills.YetlikemanycollegeteachersaroundtheU.S.,thefacultyremain29thattheirworkaseducatorscanbemeasuredbya“learning30〞suchasagraduate’tosinvestigateabilityandreason.However,theprofessorsneednotworrysomuch.Theresultsofarecentexperimentshowedthatprofessorscanuse31metricstomeasurehowwellstudentsdointhreekeyareas:criticalthinking,writtencommunication,andquantitativeliteracy.Despitethesuccessoftheexperiment,theactualresultsareworrisome,andmostly32earlierstudies.Theorganizersoftheexperimentconcludedthatfarfewerstudentswereachievingathighlevelsoncriticalthinkingthantheyweredoingforwrittencommunicationorquantitativeliteracy.Andthatconclusionisbasedonlyonstudentsnearinggraduation.Americanuniversities,despitetheirglobal33forexcellenceinteaching,haveonlybeguntodemonstratewhattheycanproduceinreal-worldlearning.Knowledge-baseddegreesarestillimportant,butemployersare34advancedthinkingskillsfromcollegegraduates.Iftheintellectualworthofacollegedegreecanbe35measured,morepeoplewillseekhighereducation---andcomeoutbetterthinkers.A)accuratelyB)confirmC)demandingD)doubtfulE)drasticallyF)justifyG)monopolizedH)outcomeI)predominanceJ)presumingK)reputationL)significantM)signifyN)simultaneouslyO)standardized26.【分析】L。空格前是形容詞no,空格后是名詞gains，所以此空應當填入一個形容詞。依據句意，選項中只有significant切合句意。havemadenosignificantgains意為“未能獲得明顯提高〞。應選L。27.【分析】F。空格前是不定式to，空格后是名詞詞組thehighcost,所以此空應當填入一個動詞原形。依據句意，動詞原形中只有justify切合句意。應選F。28.【分析】E。空格前是hasfallen，空格后是時間狀語inthelast5-6years，本句是此刻達成時且不缺句子成分，所以此空應當填入一個副詞。依據句意，選項中只有drastically符合句意。應選E。29.【分析】D。空格前是動詞remain，空格后是that指引的表語從句，所以此空應當填入一個形容詞。依據句意，選項中只有doubtful切合句意。應選D。30【.分析】H。雙引號前是不定冠詞a，所以此空應填入一個名詞。依據句意，選項中只有outcome切合句意。應選H。831.【分析】O。空格前是動詞use，空格后是名詞metrics，所以此空應當填入一個形容詞或名詞。依據句意，選項中只有standardized切合句意。應選O。32.【分析】B。空格前是副詞mostly，空格后是名詞詞組earlierstudies，由空格所在小分句開頭的and以及本句主語theactualresults可知，此空應當填入一個動詞原形。根據句意，選項中只有confirm切合句意。應選B。33.【分析】K。空格前是形容詞global，空格后是介詞調組forexcellenceinteaching，所以此空應當填入一個名詞。依據句意，選項中只有reputation切合句意。應選K。34.【分析】C。空格前是系動詞are,空格后是名詞詞組advancedthinkingskills,所以此空應當填入一個動詞，構成此刻進行時。依據句意，“鑒于知識的學位仍舊很重要，但雇主要求大學畢業生具備較強的思想能力。〞選項中只有demanding(要求；盤問〕切合句意。demandfrom為固定搭配，意為“向要求〞。應選C。35.【分析】A。空格前是系動詞be，空格后是動詞的被動語態measured，所以此空應該填入一個副詞，以修飾measured。依據句意，選項中只有accurately切合句意。應選A。CET6-cloze-2021-6-32021年6月六級考試真題(第3套)Halfofyourbrainstaysalertandpreparedfordangerwhenyousleepinanewplace,astudyhasrevealed.Thisphenomenonisoften26toasthe“-nightfirst-effect〞.ResearchersfromBrownUniversityfoundthatanetworkinthelefthemisphereofthebrain“remainedmoreactnetworkintherightsideofthebrain.Playingsoundsintotherightears(stimulatingthelefthemisphere)of27wasmorelikelytowakethemupthanifthenoiseswereplayedintotheirleftear.Itwas28observedthattheleftsideofthebrainwasmoreactiveduringdeepsleep.Whentheresearchersrepeatedthelaboratoryexperimentonthesecondandthirdnightstheyfoundthelefthemispherecouldnotbestimulatedinthesamewayduringdeepsleep.Theresearchersexplainedthatthestudydemonstratedwhenweareina29environmentthebrainpartlyremainsalertsothathumanscandefendthemselvesagainstany30danger.Theresearchersbelievethisisthefirsttimethatthe-night-effect〞“ofirstdifferentbrainstateshasbeen31inhumans.Itisn’t,however,thefirsttimeithaseverbeenseen.Someanimal32alsodisplaythisphenomenon.Forexample,dolphins,aswellasother33animals,shutdownonehemisphereofthebrainwhentheygotosleep.Apreviousstudynotedthatdolphinsalways34controltheirbreathing.Withoutkeepingthebrainactivewhilesleeping,theywouldprobablydrown.But,asthehumanstudysuggest,anotherreasonfordolphinskeepingtheireyesopenduringsleepisthattheycanlookoutfor35whileasleep.Italsokeepstheirphysiologicalprocessesworking.classifiedB)consciouslyC)dramaticallyD)exoticE)identifiedinherentG)marineH)novelI)potentialJ)predatorsreferredL)speciesM)specificallyN)varietiesO)volunteers926.【分析】K。空格前是系動詞is和副詞often，空格后是不定式to，所以此空應當填入一個形容詞或許動詞的-ed形式。選項referred切合句意。bereferredtoas為固定搭配，意為“被稱為〞。應選K。27.【分析】O。空格前是名詞詞組therightears和介詞of，空格后是系動詞was，所以此空應當填入一個表示人的名詞，表示所屬關系。選項volunteers切合句意。應選O。28.【分析】M。空格前是系動詞was，空格后是動詞的-ed形式observed，所以此空應該填入一個副詞，修飾observed。選項specifically切合。應選M。29.【分析】H。空格前是不定冠詞a；空格后是名詞environment，所以此空應當填入一個形容詞。選項novel切合句意。應選H。30.【分析】I。空格前是代詞any，空格后是名詞danger，所以此空應當填入一個形容詞。選項potential切合句意。應選I。31.【分析】E。空格前是此刻達成時的標記詞hasbeen，空格后是介詞詞組inhumans，所以此空應當填入一個動詞的-ed形式。選項identified切合句意。應選E。32【.分析】L。空格前是名詞animal，空格后是副詞a