2025年英語四六級考試沖刺試卷：詞匯記憶與高效學習考試時間：______分鐘總分：______分姓名：______第一部分：選詞填空閱讀下面的文章，從每題所給的四個選項中，選出可以填入空白處的最佳選項，并在答題卡上將該項涂黑。Thehumanbrainisincrediblycomplex,butresearchersaregraduallyuncoveringitssecrets.Onefascinatingareaofstudyfocusesonhowthebrain1memories.Whenwelearnsomethingnew,electricalsignalstravelthroughneurons,whicharethebrain'scells.Thesesignalscreatechangesintheneurons,strengtheningtheconnectionsbetweenthem.Thisprocess,knownassynapticplasticity,allowsusto2information.Memoriesarenotstoredinjustonepartofthebrain.Instead,theyaredistributedacrossmanyregions,oftenworkingtogether.Thehippocampusplaysacrucialroleinformingnewmemories,especiallythoserelatedtoexperiencesandevents.Onceamemoryisformed,itcanbestoredforalongtimeinthecerebralcortex,thebrain'souterlayer,whichhandleshigher-levelthinking.However,memoriesarenotstatic;theycanbe3overtime,sometimesevenunintentionally.Severalfactorscanaffecthowwellwerememberthings.Sleep,forexample,isessentialformemoryconsolidation,theprocessbywhichshort-termmemoriesbecomelong-term.Withoutenoughsleep,ourabilitytolearnandrecallinformationis4.Stressalsohasasignificantimpact.Highlevelsofstresshormonescaninterferewiththememory-makingprocess,makingithardertorememberdetailsorfocusonlearning.Toimprovememory,manypeopleturntovarioustechniques.Mnemonics,ormemoryaids,canbe5.Thesemightincludecreatingacronymsfromthefirstlettersofalistorvisualizinginformationinastoryformat.Practiceandrepetitionarealsokey.Themorewe6something,themorelikelywearetorememberit.Additionally,stayingmentallyactiveandengagedcanhelpbuildandmaintainstrongmemorycircuits.Understandinghowthebrainrememberscanleadtobetterlearningstrategiesandevenhelpintreatingmemory-relateddisorders.Asresearchcontinues,wecanlookforwardtomoreinsightsintothisremarkableaspectofhumancognition.1.A.encodesB.storesC.forgetsD.recognizes2.A.retainB.ignoreC.loseD.imagine3.A.createdB.retrievedC.alteredD.strengthened4.A.boostedB.weakenedC.improvedD.preserved5.A.ineffectiveB.usefulC.unnecessaryD.difficult6.A.memorizeB.explainC.forgetD.review第二部分：閱讀理解閱讀下面的文章，回答問題。Theriseofartificialintelligence(AI)hassparkedbothexcitementandconcernaroundtheworld.Proponentshighlightitspotentialtorevolutionizenumerousindustries,fromhealthcaretotransportation.AIalgorithmscananalyzevastamountsofdatafarfasterthanhumans,leadingtomoreaccuratediagnoses,optimizedlogistics,andpersonalizedrecommendations.Forinstance,inmedicine,AIsystemsarebeingtrainedtodetectpatternsinmedicalimages,helpingdoctorsidentifydiseaseslikecanceratearlierstages.Similarly,self-drivingcarspromisetomakeroadssaferbyreducinghumanerror.However,therapidadvancementofAIalsoraisessignificantethicalandsocialquestions.Onemajorconcernisjobdisplacement.AsAIsystemsbecomemorecapable,theymaytakeovertaskscurrentlyperformedbyhumans,potentiallyleadingtowidespreadunemploymentincertainsectors.Whilenewjobswillundoubtedlybecreated,thereisariskofaskillsmismatch,wheretheworkforcelacksthenecessarytrainingfortheavailablepositions.Addressingthisissuewillrequiresubstantialinvestmentineducationandretrainingprograms.Anothercriticalconcernisbias.AIsystemsareonlyasunbiasedasthedatatheyaretrainedon.Ifthetrainingdatareflectsexistingsocietalbiases,theAIwillperpetuateandevenamplifythem.Thishasseriousimplications,particularlyinareaslikehiring,wherebiasedAIalgorithmscouldleadtodiscriminatoryoutcomes.EnsuringfairnessandtransparencyinAIdevelopmentisthereforeparamount.PrivacyisyetanotherdimensionofAIthatdemandsattention.AIsystemsoftenrequireaccesstolargequantitiesofpersonaldatatofunctioneffectively.Thisraiseslegitimateconcernsaboutsurveillance,datasecurity,andthepotentialmisuseofsensitiveinformation.StrikingabalancebetweenthebenefitsofAIandtheprotectionofindividualprivacywillbecrucialasthesetechnologiesbecomemoreintegratedintoourlives.WhilethechallengesassociatedwithAIaresubstantial,theyarenotinsurmountable.Throughcarefulregulation,ethicalguidelines,andongoingresearch,itispossibletoharnessthepowerofAIwhilemitigatingitsrisks.ThefutureofAIwilldependonourcollectiveabilitytonavigatethesecomplexissuesresponsibly.根據(jù)文章內(nèi)容，回答以下問題：7.Whatisthemainideaofthepassage?8.Accordingtothepassage,whatisonepotentialbenefitofAIinhealthcare?9.Theword"revolutionize"inthefirstparagraphisclosestinmeaningto:10.WhatisamajorconcernregardingtheimpactofAIonjobs?11.WhyisbiasasignificantissueinAIdevelopment?第三部分：完形填空閱讀下面的短文，在空白處填入一個最合適的詞。Theinternethasdramaticallychangedhowweaccessandshareinformation.Forstudents,thisshiftpresentsbothopportunitiesandchallenges.Ontheonehand,theinternetprovidesavastrepositoryofknowledgereadilyavailableattheirfingertips.Studentscanresearchcomplextopics,accessacademicjournals,andconnectwithexpertsfromaroundtheglobe.Onlinelearningplatformsofferflexiblewaystoacquirenewskillsandearndegrees.Thisaccessibilitycanempowerstudentstolearnattheirownpaceandexploresubjectsbeyondtheconfinesoftraditionalclassroomsettings.Ontheotherhand,thesheervolumeofinformationavailableonlinecanbeoverwhelming.Distinguishingcrediblesourcesfrommisinformationisanincreasinglydifficulttask.Studentsmustdevelopcriticalthinkingskillstoevaluatethereliabilityofwebsitesandarticles.Furthermore,theeaseofcopyingandpastingcontentraisesconcernsaboutacademicintegrity.Plagiarism,oncerelativelyeasytocommit,isnowmoreeasilydetected,demandinggreaterhonestyandoriginalityfromstudents.Theconstantconnectivityalsoposesachallengetoconcentration,asdigitaldistractionscaneasilyderailfocusedstudysessions.Despitethesechallenges,theinternetremainsaninvaluabletoolformoderneducation.Bylearningtonavigateitscomplexitiescriticallyandresponsibly,studentscanleverageitspowertoenhancetheirlearningexperiencesandprepareforsuccessinanincreasinglydigitalworld.Thekeyliesnotinavoidingtheinternet,butinmasteringhowtouseiteffectively.12.______theinternetprovidesimmenseresources,italsopresentssignificantchallengesforstudents.13.Studentscanusetheinternettoaccessawiderangeof______,includingacademicarticlesandexpertopinions.14.Amajorskillrequiredinthedigitalageistheabilityto______crediblesourcesfromunreliableones.15.Theeaseofaccessinginformationonlinehas______issuesregardingacademichonesty,suchasplagiarism.16.Onedisadvantageofconstantonlineaccessisthepotentialfor______,whichcanhinderconcentration.17.Ultimately,studentsneedtolearnhowto______theinterneteffectivelyfortheireducation.第四部分：翻譯將下面的英文句子翻譯成中文。Therapiddevelopmentoftechnologyhasmadeitpossibleforpeopletoworkfromhome,leadingtoamoreflexiblelifestyleformany.---試卷答案第一部分：選詞填空1.A解析：句意“人腦非常復雜，但研究人員正逐漸揭開它的秘密。一個引人入勝的研究領(lǐng)域關(guān)注大腦如何記憶。”根據(jù)后文描述神經(jīng)元信號、突觸可塑性等記憶形成機制，encodes“編碼”最符合語境，指大腦將信息轉(zhuǎn)化為記憶的過程。2.A解析：句意“當我們學習新事物時，電信號通過神經(jīng)元（大腦的細胞），這些信號改變神經(jīng)元的狀態(tài)，加強它們之間的連接。這個過程，稱為突觸可塑性，使我們能夠記住信息?！备鶕?jù)前文神經(jīng)元信號和連接加強，retain“保留，記住”符合句意，指將信息保持在記憶中。3.C解析：句意“記憶并非存儲在大腦的某一個部分。相反，它們分布在大腦的許多區(qū)域，經(jīng)常協(xié)同工作。海馬體在形成新記憶中起著至關(guān)重要的作用，特別是與經(jīng)歷和事件相關(guān)的記憶。一旦記憶形成，它就可以很長時間存儲在大腦皮層，大腦皮層處理高級思維，但記憶會隨著時間的推移而改變?！备鶕?jù)語境，altered“改變”指記憶會隨著時間推移而發(fā)生改變，符合記憶的動態(tài)性特點。4.B解析：句意“睡眠，例如，對于記憶鞏固至關(guān)重要，記憶鞏固是短期記憶轉(zhuǎn)化為長期記憶的過程。沒有足夠的睡眠，我們學習和回憶信息的能力就會減弱?！备鶕?jù)常識和語境，減弱與睡眠不足對應(yīng)，weakened“減弱的”符合句意。5.B解析：句意“為了改善記憶力，許多人轉(zhuǎn)向各種技巧。記憶法或記憶輔助工具可以是有效的。這些可能包括將列表的首字母縮寫成首字母縮略詞，或以故事形式將信息視覺化?！备鶕?jù)語境，useful“有用的”描述記憶法的作用，符合句意。6.A解析：句意“理解大腦如何記憶可以幫助我們制定更好的學習策略，甚至有助于治療與記憶相關(guān)的疾病。隨著研究的繼續(xù)，我們可以期待對這一非凡認知方面的更多見解?！备鶕?jù)前文提到重復是關(guān)鍵，memorize“記住”與重復練習相符，指通過重復來記住事物。第二部分：閱讀理解7.Thepassagediscussesboththepotentialbenefitsandsignificantconcernsrelatedtotheadvancementandapplicationofartificialintelligence.解析：文章首段提出AI的潛力與擔憂，中間段落分別論述了AI在醫(yī)療、交通等領(lǐng)域的益處以及就業(yè)、偏見、隱私等風險。最后一段總結(jié)需要負責任地引導AI發(fā)展。全文圍繞AI的利弊展開，故此為最佳主旨概括。8.AIalgorithmscananalyzevastamountsofdatafarfasterthanhumans,leadingtomoreaccuratediagnoses,especiallyinidentifyingdiseaseslikecanceratearlierstages.解析：根據(jù)文章第一段第三句，“AIalgorithmscananalyzevastamountsofdatafarfasterthanhumans,leadingtomoreaccuratediagnoses,especiallythoserelatedtoexperiencesandevents.”明確指出AI在分析大量數(shù)據(jù)方面速度快于人類，能帶來更準確的診斷，尤其是在早期識別癌癥等疾病方面。9.transform解析：根據(jù)文章第一段第二句，“Proponentshighlightitspotentialtorevolutionizenumerousindustries,fromhealthcaretotransportation.”revolutionize意為“使徹底變革，使革命化”，transform意為“使改變形式或性質(zhì)”，在此語境下意思最為接近。10.AsAIsystemsbecomemorecapable,theymaytakeovertaskscurrentlyperformedbyhumans,potentiallyleadingtowidespreadunemploymentincertainsectors.解析：根據(jù)文章第二段第一句，“Onemajorconcernisjobdisplacement.AsAIsystemsbecomemorecapable,theymaytakeovertaskscurrentlyperformedbyhumans,potentiallyleadingtowidespreadunemploymentincertainsectors.”直接說明了AI能力提升可能導致人類失業(yè)的問題。11.BecausethetrainingdataforAIsystemsoftenreflectsexistingsocietalbiases,whichcanthenbeperpetuatedandamplifiedbytheAI.解析：根據(jù)文章第三段前兩句，“Anothercriticalconcernisbias.AIsystemsareonlyasunbiasedasthedatatheyaretrainedon.Ifthetrainingdatareflectsexistingsocietalbiases,theAIwillperpetuateandevenamplifythem.”指出AI的偏見源于其訓練數(shù)據(jù)反映的社會偏見，AI會放大這些偏見。12.Despite解析：根據(jù)句意“盡管互聯(lián)網(wǎng)提供了巨大的資源，但它也給學生的學習和生活帶來了巨大的挑戰(zhàn)”，此處需要表示轉(zhuǎn)折關(guān)系的詞，despite“盡管”符合語境。13.information解析：根據(jù)句意“學生可以使用互聯(lián)網(wǎng)訪問各種各樣的信息，包括學術(shù)文章和專家意見”，information“信息”在此處最為恰當，涵蓋學術(shù)文章和觀點。14.distinguish解析：根據(jù)