2026年全英视界科学测试题及答案

2026年全英视界科学测试题及答案

一、单项选择题（总共10题，每题2分）1.Whichofthefollowingisarenewableenergysource?A.CoalB.NaturalgasC.SolarenergyD.Oil2.Theprocessbywhichplantsmakefoodiscalled:A.RespirationB.PhotosynthesisC.FermentationD.Digestion3.Whichplanetisknownasthe"RedPlanet"?A.VenusB.MarsC.JupiterD.Saturn4.Thebasicunitofheredityis:A.GeneB.ChromosomeC.DNAD.Nucleus5.Whatisthefunctionoftheheartinthehumanbody?A.TofilterbloodB.TopumpbloodC.TodigestfoodD.Toproducehormones6.WhichgasismostabundantintheEarth'satmosphere?A.OxygenB.CarbondioxideC.NitrogenD.Hydrogen7.TheforcethatpullsobjectstowardsthecenteroftheEarthiscalled:A.FrictionB.GravityC.MagnetismD.Buoyancy8.Whichofthefollowingisachemicalchange?A.MeltingiceB.BoilingwaterC.BurningwoodD.Cuttingpaper9.ThestudyoftheEarth'sphysicalfeatures,climate,andhumanactivityiscalled:A.BiologyB.ChemistryC.GeographyD.Physics10.Whichpartofthecellcontrolsthecell'sactivities?A.CellmembraneB.CytoplasmC.NucleusD.Mitochondria二、填空题（总共10题，每题2分）1.Theprocessofwaterchangingfromaliquidtoagasiscalled____________.2.Thesmallestunitofmatteristhe____________.3.ThelayeroftheEarth'satmospherethatcontainstheozonelayeristhe____________.4.Thescientificnameforthehumanspeciesis____________.5.Theenergystoredinanobjectduetoitspositioniscalled____________energy.6.Agroupoforganismsofthesamespecieslivinginthesameareaiscalleda____________.7.Theprocessbywhichwatervaporchangesbacktoaliquidiscalled____________.8.Theforcethatopposesmotionbetweentwosurfacesincontactiscalled____________.9.Thestudyoflivingorganismsiscalled____________.10.Thetransferofheatthroughdirectcontactiscalled____________.三、判断题（总共10题，每题2分）1.Allplantsneedsunlighttogrow.()2.Themoonhasitsownlight.()3.Chemicalreactionsalwaysresultintheformationofnewsubstances.()4.TheEarthrotatesonitsaxisonceevery365days.()5.Asolutionisahomogeneousmixture.()6.Bacteriaarealwaysharmfultohumans.()7.Soundcantravelthroughavacuum.()8.Thehumanbodyhasmorethan200bones.()9.Theprocessofevaporationoccursattheboilingpointofaliquid.()10.Amagnethastwopoles:anorthpoleandasouthpole.()四、简答题（总共4题，每题5分）1.Explainthedifferencebetweenaphysicalchangeandachemicalchange,andgiveanexampleofeach.2.DescribethewatercycleanditsimportancetotheEarth.3.Howdoestherespiratorysystemworkinthehumanbody?4.Whatarethethreestatesofmatterandhowcantheybechangedfromonestatetoanother?五、讨论题（总共4题，每题5分）1.Discusstheimpactofhumanactivitiesontheenvironmentandsuggestsomewaystoreducethisimpact.2.Explaintheimportanceofbiodiversityandhowwecanprotectit.3.Discusstheroleofscienceandtechnologyinimprovingourlivesandthepotentialchallengestheymaypose.4.Howcanweencouragemoreyoungpeopletopursuecareersinscience?答案一、单项选择题1.C2.B3.B4.A5.B6.C7.B8.C9.C10.C二、填空题1.evaporation2.atom3.stratosphere4.Homosapiens5.potential6.population7.condensation8.friction9.biology10.conduction三、判断题1.√2.×3.√4.×5.√6.×7.×8.√9.×10.√四、简答题1.Aphysicalchangeisachangeinthephysicalpropertiesofasubstancewithoutchangingitschemicalcomposition.Forexample,meltingiceisaphysicalchangeasthewaterchangesfromsolidtoliquid,butitschemicalformula(H₂O)remainsthesame.Achemicalchangeinvolvestheformationofnewsubstanceswithdifferentchemicalproperties.Forexample,burningwoodisachemicalchangeasitproducescarbondioxide,water,andash.2.Thewatercycleconsistsofevaporation,condensation,andprecipitation.Waterevaporatesfrombodiesofwater,plants,andtheground,turningintowatervapor.Thewatervaporrisesandcools,condensingintoclouds.Whenthecloudsbecomeheavy,precipitationoccursintheformofrain,snow,sleet,orhail.ThewatercycleisimportantasitensurestheavailabilityoffreshwateronEarth,regulatestheclimate,andsupportsvariousecosystems.3.Therespiratorysystemisresponsiblefortakinginoxygenandexpellingcarbondioxide.Whenweinhale,airentersthenoseormouth,passesthroughthetrachea,andintothebronchi,whichleadtothelungs.Inthelungs,oxygenistransferredtothebloodstreamthroughthealveoli,andcarbondioxideisremovedfromthebloodandexhaled.4.Thethreestatesofmatteraresolid,liquid,andgas.Solidshaveadefiniteshapeandvolume,liquidshaveadefinitevolumebuttaketheshapeoftheircontainer,andgaseshaveneitheradefiniteshapenoradefinitevolume.Mattercanchangestatesthroughprocessessuchasmelting(solidtoliquid),freezing(liquidtosolid),evaporation(liquidtogas),condensation(gastoliquid),sublimation(solidtogas),anddeposition(gastosolid).五、讨论题1.Humanactivitiessuchasdeforestation,burningfossilfuels,andindustrialpollutionhaveasignificantimpactontheenvironment.Theseactivitiesleadtoclimatechange,lossofbiodiversity,andpollutionofair,water,andsoil.Toreducethisimpact,wecanadoptsustainablepracticessuchasusingrenewableenergysources,reducingwaste,conservingwater,andprotectingnaturalhabitats.2.Biodiversityisimportantasitprovidesecologicalservicessuchaspollination,waterpurification,andsoilfertility.Italsohaseconomic,cultural,andaestheticvalue.Toprotectbiodiversity,wecanestablishprotectedareas,reducehabitatdestruction,controlinvasivespecies,andpromotesustainableuseofnaturalresources.3.Scienceandtechnologyhaveimprovedourlivesinmanyways,