2026年英语专业四级完形填空（自然科学）专项试题汇编及答案解析

2026年英语专业四级完形填空（自然科学）专项试题汇编及答案解析考试时间：______分钟总分：______分姓名：______第一部分完形填空Directions:Readthefollowingpassagecarefullyandchoosethemostappropriatewordforeachblankfromthefourchoicesgiven.MarkthecorrespondingletteronAnswerSheetTwowithasinglelinethroughthecentre.Thehumanbrain,1.themostcomplexorganinthebody,isoftencomparedtoahighlysophisticatedcomputer.Itcontrolsourthoughts,emotions,memories,andvirtuallyeveryotherfunctionofthehumanbody.2.scientistshavemaderemarkableprogressinunderstandingitsstructureandfunction,muchremainstobediscoveredaboutthisintricatenetworkofneurons.Neurons,thebasicfunctionalunitsofthebrain,communicatewitheachotherthroughelectricalandchemicalsignals.3.thesesignalstravelacrosssynapses,thetinygapsbetweenneurons,allowingforthetransmissionofinformationthroughoutthebrainandnervoussystem.Thespeedandefficiencyofthiscommunicationarecrucialforcognitiveprocessessuchaslearning,memory,anddecision-making.Neuroplasticity,thebrain'sabilitytoreorganizeitselfbyformingnewneuralconnectionsthroughoutlife,isaremarkablefeature.4.itallowsthebraintoadapttonewexperiences,recoverfrominjury,andlearnnewskills.Thisplasticityisparticularlyevidentduringchildhoodandadolescencebutcontinuesthroughoutadulthood,highlightingthebrain'sremarkableresilienceandadaptability.Advancesinbrainimagingtechniques,suchasfMRIandPETscans,haveprovidedresearcherswithunprecedentedinsightsintobrainactivity.5.thesetechnologiesallowscientiststoobserveneuralactivityinreal-time,helpingtoidentifywhichpartsofthebrainareinvolvedinvarioustasksandhowtheyinteractwitheachother.Suchfindingshaveprofoundimplicationsforunderstandingbraindisordersanddevelopingnewtreatments.Thestudyofthebrainalsoinvolvesexploringtheinfluenceofgenetics,environment,andlifestyleonitsdevelopmentandfunction.6.geneticfactorscanpredisposeindividualstocertainneurologicalconditions,whileenvironmentalfactorssuchasstress,nutrition,andphysicalactivitycansignificantlyimpactbrainhealth.Understandingtheseinteractionsisessentialfordevelopingeffectivestrategiestopromotebrainhealthandpreventneurologicaldiseases.Effortstoprotectandenhancebrainhealthhaveledtothedevelopmentofvariousinterventions,includingcognitivetraining,mindfulnesspractices,andlifestylemodifications.7.theseapproachesaimtostimulateneuralactivity,reducestress,andpromoteoverallbrainhealth.Asresearchcontinuestouncoverthemysteriesofthebrain,newandinnovativetreatmentsarelikelytoemerge,offeringhopeforafuturewherebraindisordersarebetterunderstoodandeffectivelytreated.Neurosciencecontinuestobeafieldofgreatfascinationandimportance.8.itsdiscoveriesnotonlydeepenourunderstandingofthehumanmindbutalsohavepracticalapplicationsinmedicine,education,andtechnology.Aswedelvedeeperintothecomplexitiesofthebrain,wecontinuetounlockthesecretsofhumancognitionandbehavior,pavingthewayfornewbreakthroughsandadvancements.第二部分完形填空Directions:Readthefollowingpassagecarefullyandchoosethemostappropriatewordforeachblankfromthefourchoicesgiven.MarkthecorrespondingletteronAnswerSheetTwowithasinglelinethroughthecentre.TheEarth'sclimatesystemisacomplexanddynamicnetworkofinteractionsbetweentheatmosphere,oceans,landsurfaces,andice.1.thesecomponentsinteract,theyinfluencetheplanet'stemperature,weatherpatterns,andoverallclimate.Understandingtheseinteractionsiscrucialforpredictingclimatechangeanditsimpactsonhumansocietiesandnaturalecosystems.Theatmosphere,thelayerofgasessurroundingtheEarth,playsavitalroleinregulatingtemperature.2.greenhousegasessuchascarbondioxideandmethanetrapheatfromthesun,creatinganaturalwarmingeffectknownasthegreenhouseeffect.However,excessiveemissionsofthesegasesduetohumanactivitieshavestrengthenedthiseffect,leadingtoglobalwarmingandclimatechange.Oceanscovermorethan70%oftheEarth'ssurfaceandplayasignificantroleinclimateregulation.3.theyabsorbalargeportionoftheexcessheattrappedbygreenhousegases,theyalsohelptodistributethisheataroundtheplanetthroughoceancurrents.Thesecurrents,suchastheGulfStreamandtheKuroshioCurrent,transportwarmwaterfromtheequatortowardsthepolesandcoldwaterfromthepolestowardstheequator,influencingregionalclimatesworldwide.Landsurfaces,includingforests,deserts,andurbanareas,alsointeractwiththeclimatesystem.4.vegetationsuchasforestscanabsorbcarbondioxidefromtheatmosphere,helpingtomitigateclimatechange.Conversely,deforestationandlanddegradationcanreleasestoredcarbon,exacerbatingthegreenhouseeffect.Urbanareas,withtheirhighconcentrationofbuildingsandpavedsurfaces,cancreateheatislands,leadingtohighertemperaturescomparedtosurroundingruralareas.Ice,intheformofglaciers,icesheets,andseaice,isanothercriticalcomponentoftheEarth'sclimatesystem.5.glaciersandicesheetsreflectasignificantamountofsunlightbackintospace,theyhelptokeeptheplanetcool.However,astemperaturesrise,theseiceformationsaremeltingatanacceleratedrate,contributingtosea-levelriseandfurtheralteringtheclimatesystem.Climatechangeresultingfromhumanactivitiesposessignificantchallengestoglobalecosystemsandhumansocieties.6.risingsealevelsthreatencoastalcommunitiesandlow-lyingareas,whilechangingweatherpatternscanleadtomorefrequentandseveredroughts,floods,andstorms.Theseimpactsdisproportionatelyaffectvulnerablepopulations,particularlyindevelopingcountries,highlightingtheneedforurgentandcoordinatedaction.Addressingclimatechangerequiresamultifacetedapproachthatincludesreducinggreenhousegasemissions,enhancingcarbonsinks,andadaptingtotheinevitableimpactsofclimatechange.7.renewableenergysourcessuchassolar,wind,andhydroelectricpowercanreplacefossilfuels,significantlyreducingcarbonemissions.Reforestationandafforestationprojectscanhelptorestoreandexpandcarbonsinks,whilesustainablelandmanagementpracticescanpromotecarbonsequestrationinsoilsandvegetation.Internationalcooperationisessentialforeffectiveclimatechangemitigationandadaptation.8.theParisAgreement,countriesaroundtheworldhavecommittedtolimitingglobalwarmingtowellbelow2degreesCelsiusabovepre-industriallevels.Achievingthisgoalrequiressubstantialreductionsinemissions,technologicalinnovation,andfinancialsupportfordevelopingcountriestoadapttoclimatechangeandtransitiontosustainabledevelopmentpathways.试卷答案第一部分完形填空1.Aalthough2.Cbecause3.Dwhich4.Benabling5.Ewhereas6.Fbecause7.Gsuchas8.Htherefore第二部分完形填空1.BAs2.Dwhere3.Abecause4.Ewhile5.Csince6.Galthough7.Hthrough8.Finthat解析第一部分完形填空1.Aalthough:此处表示让步关系，引出尽管大脑是人体最