2025年英語四六級完形填空解題技巧試卷：下半學(xué)期備考寶典考試時(shí)間：______分鐘總分：______分姓名：______第一部分完形填空Directions:Readthefollowingpassagecarefullyandchoosethebestword(orwords)foreachblankfromthefourchoicesgiven.MarkthecorrespondingletteronAnswerSheet2withasinglelinethroughthecentre.Thehumanbrainisincrediblycomplex,butresearchershavemadesignificantstridesinunderstandingitsbasicfunctions.Neurons,thebuildingblocksofthebrain,communicatewitheachotherthroughelectricalandchemicalsignals.Thiscommunicationnetworkallowsustothink,feel,move,andperceivetheworldaroundus.Understandinghowtheseneurons1)______iscrucialforunravelingthemysteriesofthebrain.Onekeyaspectofneuronalcommunicationisthesynapse,atinyjunctionwheresignalsaretransmitted.Whenanelectricalsignal,knownasanactionpotential,reachestheendofaneuron,ittriggersthereleaseofchemicalmessengerscalledneurotransmitters.Theseneurotransmitterscrossthesynapticgapandbindtoreceptorsonthereceivingneuron.Thisbindingcaneitherexciteorinhibitthereceivingneuron,dependingonthetypeofneurotransmitterandreceptorinvolved.Theprocessisincredibly2)______,withmillionsofneuronsfiringandcommunicatingsimultaneously.However,thebrain'sfunctionisnotjustaboutindividualneuronsfiring;itisaboutthecoordinatedactivityofvastnetworksofneurons.Thesenetworkscanbethoughtofascircuitsthatprocessinformationandgiverisetocomplexbehaviorsandcognitivefunctions.Forexample,theprefrontalcortex,aregionofthebraininvolvedindecision-makingandplanning,reliesontheintricate3)______ofmultipleneuronstoperformitsfunctionseffectively.Studieshaveshownthatdisruptionsintheseneuralnetworkscanleadtovariouscognitiveimpairments,highlightingtheimportanceoftheirproperfunctioning.Recentadvancementsinneurotechnologyhaveallowedresearcherstovisualizetheseneuralnetworksinunprecedenteddetail.Techniquessuchasfunctionalmagneticresonanceimaging(fMRI)andelectroencephalography(EEG)enablescientiststoobservebrainactivityinreal-time.Thesetoolshaveprovidedvaluableinsightsintohowdifferentbrainregionsworktogethertoproducethoughts,emotions,andactions.Byunderstandingthesecomplexinteractions,researchershopetodevelopmoreeffectivetreatmentsforneurologicalandpsychiatricdisorders.Despitetheseadvancements,muchremainstobelearnedaboutthebrain.Thesheercomplexityofneuronalcommunicationandnetworkdynamicsmakesitachallengingbutfascinatingfieldofstudy.Asourunderstandingcontinuestogrow,wemayunlocknewinsightsintothehumanmindanddevelopinnovativestrategiestoenhancebrainhealthandfunction.1.A.interactB.connectC.operateD.function2.A.rapidB.regularC.randomD.reliable3.A.integrationB.separationC.coordinationD.interactionTheglobalclimatecrisisposesanunprecedentedchallengetohumanity,requiringurgentandcollectiveaction.Risingglobaltemperatures,primarilydrivenbyhumanactivitiessuchasburningfossilfuelsanddeforestation,haveledtonumerousadverseeffectsontheenvironment.Oneofthemostvisibleimpactsisthemeltingofpolaricecapsandglaciers,whichcontributestosea-levelrise.Thisrisethreatenscoastalcommunitiesandlow-lyingareas,potentiallydisplacingmillionsofpeopleandcausingsignificanteconomicdamage.Anotherconsequenceofglobalwarmingistheincreasedfrequencyandintensityofextremeweatherevents.Heatwaves,droughts,floods,andhurricanesarebecomingmorecommon,devastatingecosystemsandimpactinghumanlivelihoods.Theseeventsnotonlycauseimmediatelossoflifeandpropertybutalsohavelong-termenvironmentalandeconomicrepercussions.Forinstance,prolongeddroughtscanleadtocropfailuresandwaterscarcity,whilefloodscandestroyhabitatsandcontaminatewatersources.Biodiversityisalsofacingaseverethreatduetoclimatechange.Manyspeciesareunabletoadaptquicklyenoughtochangingconditions,leadingtopopulationdeclinesandevenextinction.Habitatsarebeingalteredordestroyed,furtherexacerbatingtheproblem.Thelossofbiodiversityhascascadingeffectsonecosystems,disruptingnaturalprocessesandreducingtheirabilitytoprovideessentialservices,suchaspollinationandwaterpurification.Addressingtheclimatecrisisrequiresamultifacetedapproach.Firstly,transitioningtorenewableenergysourceslikesolar,wind,andhydroelectricpoweriscrucialtoreducegreenhousegasemissions.Governmentsandindustriesmustinvestheavilyinrenewableenergyinfrastructureandtechnologies.Secondly,implementingsustainableland-usepractices,suchasreforestationandafforestation,canhelpabsorbcarbondioxidefromtheatmosphereandpreservebiodiversity.Protectingexistingforestsandecosystemsisequallyimportant.Furthermore,individualsalsohavearoletoplayinmitigatingclimatechange.Simpleactionslikereducingenergyconsumption,usingpublictransportation,minimizingwaste,andadoptingaplant-baseddietcanmakeasignificantdifferencewhenpracticedonalargescale.Raisingawarenessabouttheclimatecrisisandadvocatingforpolicychangesarealsoessentialcomponentsofthesolution.Inconclusion,theclimatecrisisisoneofthemostpressingissuesofourtime,requiringimmediateandsustainedeffortsfromallsectorsofsociety.Byworkingtogetherandimplementingeffectivestrategies,wecanmitigatetheimpactsofclimatechangeandcreateasustainablefutureforgenerationstocome.4.A.situationB.problemC.challengeD.crisis5.A.primarilyB.simplyC.mainlyD.basically6.A.leadsB.resultsC.causesD.contributes7.A.risingB.fallingC.meltingD.freezing8.A.whichB.thatC.whatD.where9.A.threatenB.harmC.damageD.destroy10.A.HeatwavesB.DroughtsC.FloodsD.Hurricanes11.A.devastatingB.destroyingC.damagingD.harming12.A.eventsB.situationsC.conditionsD.phenomena13.A.alsoB.tooC.eitherD.aswell14.A.severeB.seriousC.mildD.moderate15.A.extinctionB.reductionC.lossD.decrease16.A.quicklyB.rapidlyC.slowlyD.gradually17.A.HabitatsB.EcosystemsC.EnvironmentsD.Species18.A.cascadingB.causingC.leadingD.resulting19.A.servicesB.functionsC.rolesD.benefits20.A.FirstlyB.SecondlyC.FurthermoreD.FinallyTheadvancementsinartificialintelligence(AI)haverevolutionizednumerousindustries,fromhealthcareandfinancetotransportationandentertainment.AIalgorithmsarecapableofprocessingvastamountsofdataandlearningfromit,enablingthemtomakepredictionsanddecisionswithincreasingaccuracy.Thistechnologyhasthepotentialtosignificantlyimproveefficiency,productivity,andinnovationacrossvarioussectors.Inhealthcare,AIisbeingusedtodeveloppersonalizedmedicineplans.Byanalyzingpatientdata,includinggeneticinformation,medicalhistory,andlifestylefactors,AIsystemscanidentifythemosteffectivetreatmentsforindividualpatients.Thisapproachnotonlyimprovespatientoutcomesbutalsoreducesthecostofhealthcarebyminimizingunnecessarytreatments.Additionally,AI-powereddiagnostictoolsarebecomingincreasinglysophisticated,helpingdoctorsdetectdiseasessuchascanceratearlierstages,whichcangreatlyenhancethechancesofsuccessfultreatment.ThefinanceindustryhasalsoseensignificantbenefitsfromAI.AIalgorithmsareusedforcreditscoring,frauddetection,andalgorithmictrading.Theseapplicationshelpfinancialinstitutionsmakemoreinformeddecisions,reducerisks,andimprovecustomerservice.Forexample,AI-poweredchatbotscanprovidecustomerswithinstantassistanceandsupport,enhancingtheoverallbankingexperience.Inthetransportationsector,AIispavingthewayforautonomousvehicles.Self-drivingcars,trucks,anddronesarebeingdevelopedtoincreasesafety,reducetrafficcongestion,andimprovefuelefficiency.ThesevehiclesuseAIsensorsandalgorithmstonavigateandmakedecisionsinreal-time,potentiallytransformingthewaywetravelandtransportgoods.However,therapiddevelopmentandimplementationofAIalsoraiseethicalandsocietalconcerns.Issuessuchasdataprivacy,algorithmicbias,andthepotentialdisplacementofjobsneedtobeaddressed.EnsuringthatAIisdevelopedandusedresponsiblyiscrucialtomaximizeitsbenefitswhileminimizingitsrisks.AsAIcontinuestoevolve,itwillundoubtedlyhaveaprofoundimpactonourlives.Byfosteringcollaborationbetweentechnologists,policymakers,andethicists,wecanharnessthepowerofAItocreateamoresustainableandequitablefuture.21.A.IndustriesB.FieldsC.SectorsD.Areas22.A.AlgorithmsB.TechniquesC.SystemsD.Tools23.A.ProcessingB.HandlingC.AnalyzingD.Managing24.A.predictionsB.decisionsC.conclusionsD.recommendations25.A.significantlyB.slightlyC.marginallyD.subtly26.A.improveB.enhanceC.boostD.raise27.A.healthcareB.financeC.transportationD.entertainment28.A.developingB.designingC.creatingD.implementing29.A.personalizedB.generalC.standardD.universal30.A.geneticB.medicalC.lifestyleD.environmental31.A.systemsB.toolsC.devicesD.applications32.A.sophisticatedB.simpleC.basicD.primitive33.A.stagesB.phasesC.levelsD.points34.A.increaseB.enhanceC.improveD.boost35.A.benefitsB.outcomesC.resultsD.effects36.A.industryB.sectorC.fieldD.area37.A.scoringB.evaluatingC.assessingD.analyzing38.A.detectionB.identificationC.recognitionD.discovery39.A.tradingB.investingC.bankingD.lending40.A.institutionsB.companiesC.organizationsD.businesses41.A.assistanceB.supportC.guidanceD.advice42.A.enhancingB.improvingC.increasingD.developing43.A.AutonomousB.ManualC.AutomatedD.Operated44.A.safetyB.speedC.comfortD.efficiency45.A.congestionB.delayC.jamD.pile-up46.A.reducingB.decreasingC.minimizingD.lowering47.A.potentialB.abilityC.possibilityD.chance48.A.ethicalB.socialC.economicD.political49.A.concernsB.issuesC.problemsD.challenges50.A.developedB.implementedC.utilizedD.designed51.A.responsiblyB.carefullyC.cautiouslyD.wisely52.A.maximizingB.minimizingC.utilizingD.enhancing53.A.powerB.impactC.abilityD.influence54.A.technologistsB.scientistsC.engineersD.researchers55.A.policymakersB.administratorsC.managersD.leaders56.A.ethicistsB.philosophersC.scholarsD.experts57.A.harnessingB.utilizingC.exploitingD.developing58.A.sustainableB.stableC.feasibleD.viable59.A.equitableB.justC.fairD.balanced60.A.futureB.lifeC.worldD.society試卷答案1.Dfunction解析：句意強(qiáng)調(diào)神經(jīng)元的基本功能，即如何運(yùn)作。Ainteract（互動(dòng)）、Bconnect（連接）、Coperate（操作）都不如Dfunction（功能、運(yùn)作）準(zhǔn)確全面。2.Arapid解析：描述神經(jīng)元信號傳遞的速度，強(qiáng)調(diào)其快。Bregular（規(guī)律的）、Crandom（隨機(jī)的）、Dreliable（可靠的）均不符合語境。3.Aintegration解析：強(qiáng)調(diào)多個(gè)神經(jīng)元如何“整合”起來協(xié)同工作。Bseparation（分離）、Ccoordination（協(xié)調(diào)）雖有關(guān)聯(lián)但不如integration（整合）更能體現(xiàn)網(wǎng)絡(luò)的整體性。4.Dcrisis解析：根據(jù)后文描述的嚴(yán)峻性和緊迫性，全球氣候問題應(yīng)視為一場“危機(jī)”。Asituation（情況）、Bproblem（問題）、Cchallenge（挑戰(zhàn)）程度不夠。5.Aprimarily解析：強(qiáng)調(diào)主要原因主要是人類活動(dòng)。Bsimply（簡單地）、Cmainly（主要地）、Dbasically（基本上）中，primarily（首要地、主要地）與句意最契合。6.Ccauses解析：動(dòng)詞原形作主語，表示“導(dǎo)致”這些影響。Aleads、Bresults、Dcontributes雖有關(guān)聯(lián)詞，但此處需動(dòng)詞原形作主語表示原因。7.Cmelting解析：描述極地冰帽和冰川的變化狀態(tài)，正在“融化”。Arising（上升）、Bfalling（下降）、Dfreezing（凍結(jié)）與語境不符。8.Awhich解析：非限制性定語從句，修飾前面的名詞短語themeltingofpolaricecapsandglaciers，指代“冰帽和冰川的融化”這一現(xiàn)象。9.Athreaten解析：強(qiáng)調(diào)海平面上升對沿海社區(qū)和低洼地區(qū)的“威脅”。Bharm（傷害）、Cdamage（損害）、Ddestroy（摧毀）程度遞進(jìn)，threaten更合適。10.AHeatwaves解析：列舉極端天氣事件，前文已提及heatwaves（熱浪），用并列連詞and連接droughts（干旱）、floods（洪水）、hurricanes（颶風(fēng)）。11.Adevastating解析：形容極端天氣事件的破壞性影響。Bdestroying、Cdamaging、Dharming詞形相近但devastating（毀滅性的）程度最強(qiáng)。12.Aevents解析：指代前文提到的各種極端天氣現(xiàn)象。Bsituations（情況）、Cconditions（條件）、Dphenomena（現(xiàn)象）均不符合語境。13.Ceither解析：與上文“also”呼應(yīng)，表示“也”面臨威脅。Aalso、Btoo、Daswell通常放在句中或句末，且too常用于肯定句。14.Asevere解析：形容生物多樣性面臨的威脅是“嚴(yán)重的”。Bserious、Cmild、Dmoderate均不符合語境。15.Closs解析：指物種數(shù)量減少甚至“消失”，loss（損失、減少）最符合語境。Aextinction（滅絕）是loss的一種，但loss更泛指。16.Aquickly解析：強(qiáng)調(diào)物種適應(yīng)環(huán)境變化的速度很慢。Brapidly（快速地）、Cslowly（慢地）、Dgradually（逐漸地）中，quickly（快速地）與slowly形成對比。17.AHabitats解析：指物種的棲息地被改變或破壞。BEcosystems（生態(tài)系統(tǒng)）、CEnvironments（環(huán)境）、DSpecies（物種）均不符合語境。18.Acascading解析：形容生態(tài)系統(tǒng)中一系列連鎖的負(fù)面反應(yīng)。Bcausing、Cleading、Dresulting均不符合語境。19.Aservices解析：指生態(tài)系統(tǒng)提供的功能，如授粉、凈化水等“服務(wù)”。Bfunctions（功能）、Croles（角色）、Dbenefits（利益）均不符合語境。20.BSecondly解析：列舉解決氣候危機(jī)的步驟，前文有Firstly（首先），此處為Secondly（其次）。21.CSectors解析：指代AI革命化的多個(gè)“領(lǐng)域”或“行業(yè)部門”。AIndustries、BFields、DAreas均不夠準(zhǔn)確。22.AAlgorithms解析：指代處理數(shù)據(jù)和學(xué)習(xí)的核心“算法”。BTechniques、CSystems、DTools均不夠具體。23.CAnalyzing解析：指代AI處理數(shù)據(jù)的核心動(dòng)作是“分析”。AProcessing、BHandling、DManaging均不夠準(zhǔn)確。24.Apredictions解析：指代AI基于數(shù)據(jù)做出的“預(yù)測”。Bdecisions、Cconclusions、Drecommendations均不符合語境。25.Asignificantly解析：強(qiáng)調(diào)AI帶來的改進(jìn)是“顯著”的。Bslightly、Cmarginally、Dsubtly均表示程度較輕。26.Benhance解析：指代AI提升效率、生產(chǎn)力、創(chuàng)新等是“增強(qiáng)”。Aimprove、Cboost、Draise均符合但enhance更強(qiáng)調(diào)質(zhì)量提升。27.Ahealthcare解析：列舉AI應(yīng)用的第一個(gè)領(lǐng)域，即“醫(yī)療保健”。Bfinance、Ctransportation、Dentertainment為其他領(lǐng)域。28.Adeveloping解析：指代AI用于開發(fā)個(gè)性化醫(yī)療計(jì)劃。Bdesigning、Ccreating、Dimplementing均不符合語境。29.Apersonalized解析：指代根據(jù)患者數(shù)據(jù)制定的“個(gè)性化”治療方案。Bgeneral、Cstandard、Duniversal均不符合語境。30.Agenetic解析：列舉患者數(shù)據(jù)包括的內(nèi)容，如“遺傳”信息。Bmedical、Clifestyle、Denvironmental均不符合語境。31.Dapplications解析：指代AI在醫(yī)療領(lǐng)域具體使用的“應(yīng)用”。Asystems、Btools、Cdevices均不夠準(zhǔn)確。32.Bsophisticated解析：形容AI診斷工具越來越“復(fù)雜精良”。Asimple、Cbasic、Dprimitive均與語境相反。33.Astages解析：指代在早期階段檢測疾病。Bphases、Clevels、Dpoints均不符合語境。34.Benhance解析：指代早期檢測如何“增強(qiáng)”治療機(jī)會。Aincrease、Cimprove、Dboost均符合但enhance更強(qiáng)調(diào)質(zhì)量。35.Boutcomes解析：指代早期檢測帶來的結(jié)果是“患者結(jié)果”的改善。Abenefits、Cresults、Deffects均符合但outcomes更強(qiáng)調(diào)結(jié)果。36.Bsector解析：指代金融行業(yè)的AI應(yīng)用屬于哪個(gè)“領(lǐng)域”。Aindustry、Cfield、Darea均不夠準(zhǔn)確。37.Ascoring解析：指代AI用于“評分”信用。Bevaluating、Cassessing、Danalyzing均符合但scoring更具體。38.Adetection解析：指代AI用于“檢測”欺詐。Bidentification、Crecognition、Ddiscovery均不符合語境。39.Atrading解析：指代AI在金融領(lǐng)域的應(yīng)用包括“交易”。Binvesting、Cbanking、Dlending均不符合語境。40.Ainstitutions解析：指代進(jìn)行這些應(yīng)用的“金融機(jī)構(gòu)”。Bcompanies、Corganizations、Dbusinesses均符合但institutions更準(zhǔn)確。41.Aassistance解析：指代AI聊天機(jī)器人提供的“幫助”。Bsupport、Cguidance、Dadvice均符合但assistanc