2025年英語四六級考試完形填空真題解析沖刺押題試卷考試時間：______分鐘總分：______分姓名：______第一部分完形填空閱讀下面的文章，文中有十個空白，每個空白有四個選項。根據(jù)文章內(nèi)容，選擇的最佳選項涂在答題卡相應(yīng)的位置。Thehumanbrainisaremarkableorgan,capableoflearning,remembering,andprocessingvastamountsofinformation.1.__________itissocomplex,understandingitsfullworkingsremainsoneofthegreatestchallengesinscience.Researchersusevariousmethodstostudythebrain,fromobservingitsphysicalstructuretorecordingelectricalactivity.Onekeyareaofstudyistheneuron,thebasicbuildingblockofthebrain.Neuronscommunicatewitheachotherthroughelectricalandchemicalsignals.2.__________thesesignalstravelacrosssynapses,thetinygapsbetweenneurons,allowingforthetransmissionofinformationthroughoutthebrainandnervoussystem.Thespeedandefficiencyofthiscommunicationarecrucialforproperbrainfunction.Recentadvancementsintechnologyhaveallowedscientiststopeerdeeperintothebrain'sactivity.Techniquessuchasfunctionalmagneticresonanceimaging(fMRI)andelectroencephalography(EEG)enableresearcherstoobservebrainactivityinrealtime.3.__________,thesetoolsprovidevaluableinsightsintohowdifferentpartsofthebrainworktogethertoperformvarioustasks,fromsimplemovementstocomplexthoughtprocesses.However,despitethesetechnologicalbreakthroughs,thereisstillmuchmoretolearnaboutthebrain.4.__________understandinghowmemoriesareformedandstoredremainsamystery,asdothemechanismsbehindconsciousnessandemotion.Thestudyofthebrainisanongoingjourney,withnewdiscoveriescontinuallyreshapingourunderstandingofthisincredibleorgan.Studyingthebrainnotonlyenhancesourknowledgeofhowwethinkandfeelbutalsohaspracticalimplications.5.__________,researchintobraindisorderslikeAlzheimer'sandParkinson'sdiseasehasledtothedevelopmentofnewtreatmentsandtherapies.Bygainingadeeperunderstandingofthebrain,wecannotonlytreatneurologicaldisordersbutalsoimproveeducationalmethodsandenhanceouroverallqualityoflife.Neuroplasticity,thebrain'sabilitytochangeandadapt,isanotherfascinatingaspectofbrainscience.6.__________,eveninadulthood,thebraincanformnewconnectionsandreorganizeitselfinresponsetonewexperiencesandlearning.Thisremarkablepropertyallowsustoacquirenewskills,recoverfrombraininjuries,andadapttochangingenvironments.Thebrain'scomplexityalsoraisesethicalquestions.7.__________,theabilitytomodifyorenhancebrainfunctionthroughtechnologyraisesconcernsaboutprivacy,fairness,andthedefinitionofhumanidentity.Asourunderstandingofthebraingrows,itiscrucialtoconsidertheseethicalimplicationsandensurethatourknowledgeisusedforthebettermentofhumanity.Educatingthepublicaboutthebrainisessentialforfosteringagreaterunderstandingofthisorgan.8.__________,manypeoplehavemisconceptionsabouthowthebrainworks.Bypromotingbrainawarenessandprovidingaccurateinformation,wecanencouragemorepeopletopursuecareersinneuroscienceandrelatedfields.Inconclusion,thestudyofthebrainisamultidisciplinaryendeavorthatinvolvesscientistsfromvariousfields,includingbiology,psychology,andengineering.9.__________,collaborationacrossthesedisciplinesisessentialformakingsignificantadvancementsinourunderstandingofthebrain.Aswecontinuetounlockthemysteriesofthebrain,wecanlookforwardtoafuturewherebrain-relateddiseasesarebettertreated,andourcognitiveabilitiesareenhanced.Theultimategoalofbrainresearchistoimprovehumanhealthandwell-being.10.__________,bystudyingthebrain,wecangaininsightsintothefundamentalprocessesthatdriveourthoughts,feelings,andbehaviors.Thisknowledgehasthepotentialtotransformmedicine,education,andouroverallunderstandingofthehumanexperience.第二部分完形填空Theriseoftheinternetanddigitaltechnologyhasfundamentallychangedthewaywecommunicate,work,andlive.1.__________,theimpactofthesechangesextendsfarbeyondconvenience,affectingsocialdynamics,economicstructures,andevenourpsychologicalwell-being.Oneofthemostsignificanteffectsofdigitaltechnologyisoncommunication.2.__________,theinternethasconnectedpeopleacrosstheglobe,enablinginstantmessaging,videocalls,andsocialmediainteractions.Whilethishasmadecommunicationmoreaccessible,ithasalsoledtotheriseofcyberbullying,misinformation,andadeclineinface-to-faceinteractions.Theeconomyhasalsobeentransformedbydigitaltechnology.3.__________,automationandartificialintelligencehaveincreasedefficiencyinmanyindustriesbuthavealsoledtojobdisplacementinothers.Thegigeconomy,facilitatedbyplatformslikeUberandAirbnb,hascreatednewopportunitiesforflexibilitybuthasalsoraisedconcernsaboutworkerrightsandincomesecurity.Socialdynamicshavebeensimilarlyaffected.4.__________,socialmediahaschangedthewayweformandmaintainrelationships.Whileithasmadeiteasiertostayconnectedwithfriendsandfamily,ithasalsocontributedtosocialisolationandasenseofinadequacy,aspeoplecomparetheirlivestothecuratedversionsofothers'experiencesonline.Thepsychologicalimpactofdigitaltechnologyisanotherareaofconcern.5.__________,excessivescreentimeandsocialmediausehavebeenlinkedtoincreasedratesofanxiety,depression,andsleepdisorders.Theconstantneedfordigitalvalidationandthefearofmissingout(FOMO)havebecomeprevalentissuesinmodernsociety.However,digitaltechnologyalsooffersnumerousbenefits.6.__________,onlineeducationhasmadelearningmoreaccessibletopeoplearoundtheworld,whiledigitalhealthtechnologieshaveimprovedthediagnosisandtreatmentofvariousillnesses.Theabilitytoaccessinformationandservicesonlinehasempoweredindividualsandcommunitiesinunprecedentedways.Theenvironmentalimpactofdigitaltechnologycannotbeignored.7.__________,theproductionanddisposalofelectronicdevicescontributetopollutionandcarbonemissions.Theenergyconsumptionofdatacentersandthedigitalinfrastructurerequiredtosupporttheinternetalsohavesignificantenvironmentalfootprints.Addressingthesechallengesrequiresamultifacetedapproach.8.__________,promotingdigitalliteracyandeducationcanhelppeoplenavigatethedigitalworldmoreeffectivelyandmakeinformedchoicesabouttheirtechnologyuse.Additionally,policymakersneedtoimplementregulationsthatprotectprivacy,ensurefairwages,andpromotesustainablepracticesinthetechindustry.Inconclusion,digitaltechnologyhashadaprofoundandcompleximpactonsociety.9.__________,whileithasbroughtmanybenefits,ithasalsocreatednewchallengesthatneedtobeaddressed.Byfosteringabalancedandresponsibleapproachtotechnologyuse,wecanharnessitspotentialtoimproveourliveswhilemitigatingitsnegativeeffects.Thefutureofdigitaltechnologyisfullofpossibilities.10.__________,advancementsinfieldslikeartificialintelligence,virtualreality,andquantumcomputinghavethepotentialtofurthertransformourworld.Aswemoveforward,itisessentialtoengageinthoughtfuldiscussionsaboutthedirectionwewanttotakeandensurethattechnologyserveshumanity'sbestinterests.試卷答案1.B解析：根據(jù)句意“盡管它非常復(fù)雜”，空格處應(yīng)填入表示讓步的連詞。選項B"Although"符合此意。2.C解析：根據(jù)句意“這些信號穿過突觸”，空格處應(yīng)填入表示動作發(fā)生的介詞。選項C"across"符合此意。3.D解析：根據(jù)句意“這些工具提供了寶貴的見解”，空格處應(yīng)填入表示“提供”的動詞。選項D"provide"符合此意。4.A解析：根據(jù)句意“盡管如此，理解記憶是如何形成和儲存的仍然是一個謎”，空格處應(yīng)填入表示轉(zhuǎn)折的連詞。選項A"However"符合此意。5.E解析：根據(jù)句意“因此，對阿爾茨海默病和帕金森病等腦部疾病的研究導(dǎo)致了新療法和治療的開發(fā)”，空格處應(yīng)填入表示結(jié)果的連詞。選項E"Therefore"符合此意。6.F解析：根據(jù)句意“神經(jīng)可塑性，大腦改變和適應(yīng)的能力，是腦科學(xué)的一個引人入勝的方面”，空格處應(yīng)填入表示主題的連詞。選項F"Forexample"符合此意。7.B解析：根據(jù)句意“此外，通過技術(shù)修改或增強大腦功能的能力引發(fā)了隱私、公平和人類身份定義的擔憂”，空格處應(yīng)填入表示補充的連詞。選項B"Moreover"符合此意。8.G解析：根據(jù)句意“教育公眾了解大腦對于培養(yǎng)更大的理解至關(guān)重要”，空格處應(yīng)填入表示目的的連詞。選項G"Thus"符合此意。9.H解析：根據(jù)句意“總之，跨學(xué)科合作對