广东12月高三摸底英语试卷及答案

广东12月高三摸底英语试卷及答案第1页共1页广东12月高三摸底英语试卷及答案一、单项选择题（共10小题，每题2分）1.Whichofthefollowingisthebesttitleforthepassage?A.TheImportanceofTimeManagementB.HowtoStudyEffectivelyC.TheBenefitsofRegularExerciseD.TheRoleofTechnologyinEducation参考答案：B2.Whatdoestheword"ubiquitous"mostlikelymeaninthecontextofthearticle?A.RareB.CommonC.ExpensiveD.Difficult参考答案：B3.Accordingtothepassage,whichstatementistrue?A.Allstudentsaregoodatmath.B.Somestudentsfindmathdifficult.C.Nostudentenjoysmath.D.Mathiseasyforeveryone.参考答案：B4.Ifatraintravelsat60milesperhour,howfarwillittravelin3hours?A.180milesB.160milesC.150milesD.200miles参考答案：A5.Whatisthepasttenseoftheverb"togo"?A.GaveB.GoneC.WentD.Going参考答案：C6.Whichofthefollowingisacompoundsentence?A.Thesunisshining.B.Shelikestoreadandwrite.C.Heistall.D.Theywenttothepark.参考答案：B7.Whatisthemainideaofthearticle?A.Thehistoryoftheinternet.B.Theimpactoftheinternetonsociety.C.Theinventionoftheinternet.D.Thefutureoftheinternet.参考答案：B8.Ifyouadd5totwiceanumber,theresultis11.Whatisthenumber?A.3B.4C.5D.6参考答案：B9.Whichofthefollowingisanoun?A.RunningB.JumpC.HappyD.Table参考答案：D10.Whatisthepluralformof"child"?A.ChildrenB.ChildsC.ChildesD.Child参考答案：A二、填空题（共10小题，每题2分）1.ThecapitalofFranceis______.参考答案：Paris2.Ifyouwanttobesuccessful,youneedtowork______.参考答案：hard3.TheEarthrevolvesaroundtheSun______.参考答案：onceayear4.Waterboilsat100degreesCelsius______.参考答案：atsealevel5.ShespeaksEnglishvery______.参考答案：well6.Thebookisonthetable______.参考答案：there7.Ihaven'tseenhimfortwoyears______.参考答案：yet8.Thecatissleepingonthesofa______.参考答案：there9.Heistallerthanme______.参考答案：much10.Thetrainleavesat9o'clock______.参考答案：thismorning三、判断题（共10小题，每题2分）1.TheGreatWallofChinaisoneofthemostfamouslandmarksintheworld.参考答案：√2.TheEarthiscompletelycoveredbywater.参考答案：×3.Shakespearewrote"RomeoandJuliet"inthe17thcentury.参考答案：×4.Thespeedoflightinavacuumisapproximately299,792kilometerspersecond.参考答案：√5.Photosynthesisistheprocessbywhichplantsconvertlightenergyintochemicalenergy.参考答案：√6.TheEiffelTowerwasoriginallyintendedforBarcelona,Spain,buttheprojectwasrejected.参考答案：√7.TheMonaLisawaspaintedbyLeonardodaVinciintheearly16thcentury.参考答案：√8.Thehumanbrainisthelargestorganinthehumanbody.参考答案：√9.TheAmazonRiveristhelongestriverintheworld.参考答案：×10.ThePyramidsofGizawerebuiltduringtheOldKingdomofEgypt.参考答案：√四、简答题（共8小题，每题2分）1.Pleasebrieflydescribethemainfunctionofthenucleusinaeukaryoticcell.参考答案：Thenucleusisthecontrolcenterofaeukaryoticcell,containingthecell'sgeneticmaterial(DNA)organizedintochromosomes.ItregulatesgeneexpressionandmediatesthereplicationofDNAduringthecellcycle.2.Whataretheprimarydifferencesbetweenmitosisandmeiosisintermsofchromosomenumberandcelltypeproduced?参考答案：Mitosisresultsintwogeneticallyidenticaldaughtercellswiththesamenumberofchromosomesastheparentcell,whilemeiosisproducesfourgeneticallydiversedaughtercellswithhalfthenumberofchromosomes.Mitosisisusedforgrowthandrepair,whereasmeiosisisinvolvedinsexualreproduction.3.Explaintheconceptofosmosisanditsimportanceinlivingorganisms.参考答案：Osmosisisthemovementofwatermoleculesacrossaselectivelypermeablemembranefromanareaoflowersoluteconcentrationtoanareaofhighersoluteconcentration.Itisimportantformaintainingcellturgor,regulatingwaterbalanceinorganisms,andfacilitatingnutrientabsorption.4.HowdoesphotosynthesiscontributetotheoxygencontentoftheEarth'satmosphere?参考答案：Photosynthesisconvertslightenergyintochemicalenergy,producingglucoseandoxygen.TheoxygenreleasedduringthisprocesscontributestotheEarth'satmosphere,providingtheoxygenthatmostorganismsbreathe.5.Describetheroleofenzymesasbiologicalcatalystsincellularprocesses.参考答案：Enzymesarebiologicalcatalyststhatspeedupchemicalreactionsincellswithoutbeingconsumedintheprocess.Theylowertheactivationenergyrequiredforreactions,allowingmetabolicprocessestooccurrapidlyandefficiently.Enzymesarespecifictotheirsubstratesandplayacrucialroleinvariouscellularprocesses,includingdigestion,DNAreplication,andenergyproduction.6.WhatisthesignificanceofthedoublehelixstructureofDNA?参考答案：ThedoublehelixstructureofDNAissignificantbecauseitprovidesstabilityandprotectionforthegeneticinformation,allowsforaccuratereplicationandtransmissionofgeneticmaterial,andenablesthestorageoflargeamountsofgeneticinformationinacompactform.7.Brieflyexplaintheprocessofcellularrespirationanditsmainstages.参考答案：Cellularrespirationistheprocessbywhichcellsconvertglucoseandoxygenintoenergy(ATP),carbondioxide,andwater.Themainstagesincludeglycolysis,thecitricacidcycle(Krebscycle),andoxidativephosphorylation(electrontransportchain).Glycolysisoccursinthecytoplasm,breakingdownglucoseintopyruvate.Thecitricacidcycletakesplaceinthemitochondria,furtheroxidizingpyruvatetoproduceATPandelectroncarriers.Oxidativephosphorylation,alsointhemitochondria,useselectroncarrierstogeneratealargeamountofATPthroughtheelectrontransportchainandchemiosmosis.8.Discusstheimportanceofbiodiversityinmaintainingecosystemstability.参考答案：Biodiversityiscrucialformaintainingecosystemstabilitybecauseitenhancesecosystemresilience,supportsvariousecologicalservices,andprovidesapoolofgeneticresourcesforadaptationandevolution.Ecosystemswithhighbiodiversityarebetterabletowithstandenvironmentalchangesanddisturbances,suchasclimatechange,naturaldisasters,andpollution.Biodiversityalsocontributestoecosystemfunctionslikepollination,nutrientcycling,andwaterpurification,whicharevitalforthehealthandproductivityofecosystems.Additionally,geneticdiversitywithinspeciesprovidestherawmaterialfornaturalselection,enablingspeciestoadapttochangingenvironmentsandsurviveovertime.五、阅读理解题（共8小题，每题3分）Thelocalcommunitycenterishostingaseriesofworkshopsaimedatimprovingresidents'skillsandwell-being.Thefirstworkshop,scheduledfornextSaturday,isafreecookingclassfocusingonhealthyeating.Ledbyaprofessionalchef,theclasswillteachparticipantshowtopreparenutritiousmealsusingfreshingredients.Thesecondworkshop,whichwilltakeplaceonthefollowingSunday,isapaidyogasessiondesignedforallfitnesslevels.Itwillbeledbyanexperiencedyogainstructorandwillemphasizerelaxationandstressrelief.Bothworkshopsrequireregistration,whichcanbedoneonlineorinpersonatthecommunitycenter.Spacesarelimited,soearlybookingisrecommendedtosecureaspot.1.Whatisthemainpurposeoftheworkshops?A.ToraisemoneyforthecommunitycenterB.ToprovideentertainmentforlocalresidentsC.Toimproveresidents'skillsandwell-beingD.Toofferjobtrainingforunemployedindividuals参考答案：C2.Whenandwherewillthecookingclasstakeplace?A.NextSaturdayatthecommunitycenterB.ThefollowingSundayatthelocalgymC.NextSaturdayatthelocalgymD.ThefollowingSundayatthecommunitycenter参考答案：A3.Whowillleadtheyogasession?A.AprofessionalchefB.AnexperiencedyogainstructorC.AlocalfitnesstrainerD.Acommunityvolunteer参考答案：B4.Howcanresidentsregisterfortheworkshops?A.OnlyinpersonatthecommunitycenterB.Onlyonlinethroughthecenter'swebsiteC.BothonlineandinpersonatthecommunitycenterD.Bycallingthecenter'sregistrationhotline参考答案：C5.Whyarespaceslimitedfortheworkshops?A.BecausethecenterhasasmallbudgetB.BecausetheinstructorsarenotavailableC.BecausethefacilitiesarelimitedD.Becauseearlybookingisrecommended参考答案：D6.Whatwillthecookingclassfocuson?A.CookingcomplexdishesB.UsingfreshingredientsC.PreparingmealsforlargegroupsD.Cookingwithexpensiveequipment参考答案：B7.Whatisthemainbenefitoftheyogasession?A.PhysicalexerciseB.RelaxationandstressreliefC.WeightlossD.Musclebuilding参考答案：B8.Whichstatementistrueabouttheworkshops?A.Theyogasessionisfree.B.Thecookingclassispaid.C.Registrationisonlyavailableonline.D.Spacesarenotlimited.参考答案：D标准答案与解析一、单项选择题1.参考答案：B解析：Thebesttitleforthepassageis"HowtoStudyEffectively"becausethepassageprovidestipsandstrategiesforstudyingefficiently.OptionAistoobroad,optionCisnotmentionedinthepassage,andoptionDisnotthemainfocusofthearticle.2.参考答案：B解析：Inthecontextofthearticle,"ubiquitous"mostlikelymeans"common"becauseitreferstosomethingthatispresenteverywhere.OptionAistheopposite,optionCandDarenotrelatedtothemeaningoftheword.3.参考答案：B解析：Accordingtothepassage,thestatement"Somestudentsfindmathdifficult"istruebecausethearticlementionsthatmanystudentsstrugglewithmath.OptionAisincorrectbecausenotallstudentsaregoodatmath.OptionCandDaretooabsoluteandnotsupportedbythepassage.4.参考答案：A解析：Ifatraintravelsat60milesperhour,itwilltravel180milesin3hours.Thecalculationis60miles/hour3hours=180miles.OptionB,C,andDareincorrectbecausetheydonotmatchthecalculation.5.参考答案：C解析：Thepasttenseoftheverb"togo"is"went."OptionA,B,andDareincorrectbecausetheyarenotthepasttenseformoftheverb.6.参考答案：B解析：Acompoundsentenceisasentencethatcontainstwoindependentclausesjoinedbyaconjunction."Shelikestoreadandwrite"isacompoundsentencebecauseithastwoindependentclausesjoinedby"and."OptionA,C,andDaresimplesentences.7.参考答案：B解析：Themainideaofthearticleis"Theimpactoftheinternetonsociety"becausethepassagediscusseshowtheinternethaschangedvariousaspectsoflife.OptionA,C,andDaretoospecificandnotthemainfocusofthearticle.8.参考答案：B解析：Ifyouadd5totwiceanumber,theresultis11.Theequationis2x+5=11.Solvingforx,wegetx=3.Therefore,thenumberis4.OptionA,C,andDareincorrectbecausetheydonotsatisfytheequation.9.参考答案：D解析：Anounisawordthatrepresentsaperson,place,thing,oridea."Table"isanounbecauseitrepresentsathing.OptionA,B,andCareverbsoradjectives.10.参考答案：A解析：Thepluralformof"child"is"children."OptionB,C,andDareincorrectbecausetheyarenotthecorrectpluralformoftheword.二、填空题1.参考答案：Paris解析：本题考查地理常识，法国的首都是巴黎。题干中的"ThecapitalofFrance"提示我们需要填写法国的首都名称。根据所学知识，法国的首都是巴黎，因此填入"Paris"。2.参考答案：hard解析：本题考查固定搭配，"workhard"意为"努力工作"。题干中的"Ifyouwanttobesuccessful"提示我们需要填写一个副词，表示努力工作的程度。根据所学知识，"workhard"是一个固定搭配，意为"努力工作"，因此填入"hard"。3.参考答案：onceayear解析：本题考查天文学知识，地球绕太阳公转的周期是一年。题干中的"TheEarthrevolvesaroundtheSun"提示我们需要填写地球绕太阳公转的周期。根据所学知识，地球绕太阳公转的周期是一年，因此填入"onceayear"。4.参考答案：atsealevel解析：本题考查物理知识，水的沸点受气压影响。题干中的"Waterboilsat100degreesCelsius"提示我们需要填写水的沸点受什么影响。根据所学知识，水的沸点受气压影响，在标准大气压下水的沸点是100摄氏度，因此填入"atsealevel"。5.参考答案：well解析：本题考查形容词的比较级，"well"意为"好地"。题干中的"ShespeaksEnglishvery"提示我们需要填写一个副词，表示她英语说得程度。根据所学知识，"well"是一个副词，意为"好地"，因此填入"well"。6.参考答案：there解析：本题考查介词，"onthetable"意为"在桌子上"。题干中的"Thebookisonthetable"提示我们需要填写一个副词，表示书的位置。根据所学知识，"there"是一个副词，表示"那里"，因此填入"there"。7.参考答案：yet解析：本题考查时间状语，"haven'tseen"提示我们使用现在完成时。题干中的"Ihaven'tseenhimfortwoyears"提示我们需要填写一个时间状语，表示"已经两年没见过他了"。根据所学知识，现在完成时常与"yet"连用，表示"已经"，因此填入"yet"。8.参考答案：there解析：本题考查副词，"onthesofa"意为"在沙发上"。题干中的"Thecatissleepingonthesofa"提示我们需要填写一个副词，表示猫睡觉的位置。根据所学知识，"there"是一个副词，表示"那里"，因此填入"there"。9.参考答案：much解析：本题考查比较级，"tallerthanme"提示我们需要填写一个副词，表示他比我高多少。根据所学知识，"much"是一个副词，用于修饰形容词的比较级，表示程度，因此填入"much"。10.参考答案：thismorning解析：本题考查时间状语，"leavesat9o'clock"提示我们需要填写一个时间状语，表示火车离开的时间。根据所学知识，"thismorning"表示"今天早上"，因此填入"thismorning"。三、判断题1.参考答案：√解析：TheGreatWallofChinaisindeedoneofthemostfamouslandmarksintheworld,knownforitshistoricalandculturalsignificance.ItisasymbolofChinesecivilizationandhasbeenrecognizedglobally.2.参考答案：×解析：TheEarthisnotcompletelycoveredbywater.About71%oftheEarth'ssurfaceiscoveredbywater,whiletheremaining29%island.Thestatementisincorrect.3.参考答案：×解析：Shakespearewrote"RomeoandJuliet"inthelate16thcentury,specificallybetween1595and1596.Thestatementthathewroteitinthe17thcenturyisincorrect.4.参考答案：√解析：Thespeedoflightinavacuumisindeedapproximately299,792kilometerspersecond.Thisvalueisafundamentalconstantinphysicsandiswidelyaccepted.5.参考答案：√解析：Photosynthesisistheprocessbywhichplantsconvertlightenergyintochemicalenergy.ThisprocessisessentialforlifeonEarth,asitprovidestheoxygenandfoodthatmanyorganismsneed.6.参考答案：√解析：TheEiffelTowerwasindeedoriginallyintendedforBarcelona,Spain,buttheprojectwasrejectedduetothedesignbeingdeemedtoostrangeandunsuitableforthecity.Thestatementiscorrect.7.参考答案：√解析：TheMonaLisawaspaintedbyLeonardodaVinciintheearly16thcentury,specificallybetween1503and1506.ItisoneofhismostfamousworksandishousedintheLouvreMuseuminParis.8.参考答案：√解析：Thehumanbrainisindeedthelargestorganinthehumanbody.Itweighsabout1.3to1.4kilogramsandisresponsibleforcontrollingmostoftheactivitiesofthebody.9.参考答案：×解析：TheAmazonRiverisnotthelongestriverintheworld.TheNileRiverinAfricaisthelongestriverintheworld.TheAmazonRiveristhelargestbyvolume.Thestatementisincorrect.10.参考答案：√解析：ThePyramidsofGizawereindeedbuiltduringtheOldKingdomofEgypt,specificallyduringthe4thDynasty,around2580to2560BCE.Theyareamongthemostfamousandwell-preservedancientstructuresintheworld.四、简答题1.参考答案：Thenucleusisthecontrolcenterofaeukaryoticcell,containingthecell'sgeneticmaterial(DNA)organizedintochromosomes.ItregulatesgeneexpressionandmediatesthereplicationofDNAduringthecellcycle.解析：Thenucleusfunctionsasthecommandcenterforeukaryoticcellsbyhousingthecell'sDNA,whichcontainstheinstructionsforbuildingandmaintainingtheorganism.Itcontrolscellularactivitiesthroughgeneexpression,determiningwhichproteinsareproducedatanygiventime.Additionally,thenucleusorchestratesDNAreplicationduringcelldivision,ensuringthateachnewcellreceivesacompletesetofgeneticinstructions.Withoutthenucleus,thecellwouldlackdirectionandcoordination,leadingtodysfunctionordeath.2.参考答案：Mitosisresultsintwogeneticallyidenticaldaughtercellswiththesamenumberofchromosomesastheparentcell,whilemeiosisproducesfourgeneticallydiversedaughtercellswithhalfthenumberofchromosomes.Mitosisisusedforgrowthandrepair,whereasmeiosisisinvolvedinsexualreproduction.解析：Mitosisandmeiosisarebothprocessesofcelldivision,buttheyservedifferentpurposesandhavedistinctoutcomes.Mitosisoccursinsomatic(body)cellsandresultsintwodaughtercellsthatareclonesoftheparentcell,maintainingthediploidchromosomenumber(2n).Thisprocessiscrucialforgrowth,development,andtissuerepair.Incontrast,meiosistakesplaceingermcellsandinvolvestworoundsofdivision,producingfourhaploiddaughtercells(n)withgeneticvariationduetocrossingoverandindependentassortment.Meiosisisessentialforsexualreproduction,asitgeneratesgametes(spermandeggcells)thatcombineduringfertilizationtoformadiploidzygote.3.参考答案：Osmosisisthemovementofwatermoleculesacrossaselectivelypermeablemembranefromanareaoflowersoluteconcentrationtoanareaofhighersoluteconcentration.Itisimportantformaintainingcellturgor,regulatingwaterbalanceinorganisms,andfacilitatingnutrientabsorption.解析：Osmosisisafundamentalprocessthatdrivesthemovementofwaterinlivingsystems.Itoccurswhenthereisaconcentrationgradientofsolutesacrossamembranethatallowsonlywatertopassthrough.Watermovesfromregionswheresoluteconcentrationislow(hypotonic)toregionswheresoluteconcentrationishigh(hypertonic)inanattempttoequalizesoluteconcentrationsonbothsidesofthemembrane.Thisprocessisvitalformaintainingcellturgorinplants,preventingcellsfrombecomingflaccidoroverhydrated.Osmosisalsoplaysaroleinregulatingwaterbalanceinanimalsandfacilitatingtheabsorptionofnutrientsintheintestines.4.参考答案：Photosynthesisconvertslightenergyintochemicalenergy,producingglucoseandoxygen.TheoxygenreleasedduringthisprocesscontributestotheEarth'satmosphere,providingtheoxygenthatmostorganismsbreathe.解析：Photosynthesisisacriticalbiologicalprocessthatoccursinplants,algae,andsomebacteria,enablingthemtoharnesslightenergyfromthesunandconvertitintochemicalenergystoredinglucose.Theoverallreactioncanbesummarizedas6CO2+6H2O+lightenergy→C6H12O6+6O2.Duringthisprocess,oxygenisreleasedasabyproduct.ThisoxygenisessentialforthesurvivalofmostlifeformsonEarth,asitisusedincellularrespirationtoproduceenergy.TheoxygenproducedbyphotosynthesishasaccumulatedintheEarth'satmosphereoverbillionsofyears,creatinganoxygen-richenvironmentthatsupportsaerobiclife.5.参考答案：Enzymesarebiologicalcatalyststhatspeedupchemicalreactionsincellswithoutbeingconsumedintheprocess.Theylowertheactivationenergyrequiredforreactions,allowingmetabolicprocessestooccurrapidlyandefficiently.Enzymesarespecifictotheirsubstratesandplayacrucialroleinvariouscellularprocesses,includingdigestion,DNAreplication,andenergyproduction.解析：Enzymesareproteinsthatactascatalystsinlivingorganisms,facilitatingchemicalreactionsbyloweringtheactivationenergyneededtostartthereaction.Thisallowsmetabolicprocessestoproceedataratethatsupportslife.Enzymesarehighlyspecific,meaningeachenzymetypicallycatalyzesonlyonetypeofreactionorworksonaspecificsubstrate.Forexample,amylasebreaksdownstarchintosugars,whileDNApolymerasesynthesizesDNAstrands.Thespecificityofenzymesensuresthatcellularprocessesaretightlyregulatedandefficient.Withoutenzymes,manyessentialreactionswouldbetooslowtosustainlife.6.参考答案：ThedoublehelixstructureofDNAissignificantbecauseitprovidesstabilityandprotectionforthegeneticinformation,allowsforaccuratereplicationandtransmissionofgeneticmaterial,andenablesthestorageoflargeamountsofgeneticinformationinacompactform.解析：ThedoublehelixstructureofDNA,discoveredbyJamesWatsonandFrancisCrickin1953,isafundamentalaspectofmolecularbiology.Thisstructureconsistsoftwostrandsofnucleotidesthatcoilaroundeachother,formingastableandprotectedframeworkforstoringgeneticinformation.Thesugar-phosphatebackbonesofthestrandsruninoppositedirections(antiparallel),andthenitrogenousbases(adenine,thymine,guanine,andcytosine)pairspecifically(AwithT,andGwithC)throughhydrogenbonds.ThisbasepairingensurestheaccuratereplicationofDNAduringcelldivision,allowinggeneticinformationtobepassedfromonegenerationtothenext.Thedoublehelixalsoallowsforthecompactstorageofvastamountsofgeneticinformationwithinthecellnucleus.7.参考答案：Cellularrespirationistheprocessbywhichcellsconvertglucoseandoxygenintoenergy(ATP),carbondioxide,andwater.Themainstagesincludeglycolysis,thecitricacidcycle(Krebscycle),andoxidativephosphorylation(electrontransportchain).Glycolysisoccursinthecytoplasm,breakingdownglucoseintopyruvate.Thecitricacidcycletakesplaceinthemitochondria,furtheroxidizingpyruvatetoproduceATPandelectroncarriers.Oxidativephosphorylation,alsointhemitochondria,useselectroncarrierstogeneratealargeamountofATPthroughtheelectrontransportchainandchemiosmosis.解析：Cellularrespirationisametabolicprocessthatoccursinthecellsofalllivingorganisms,convertingbiochemicalenergyfromnutrientsintoadenosinetriphosphate(ATP),theenergycurrencyofthecell.Theprocessinvolvesthreemainstages:glycolysis,thecitricacidcycle,andoxidativephosphorylation.Glycolysisisthefirststage,occurringinthecytoplasm,whereonemoleculeofglucoseisbrokendownintotwomoleculesofpyruvate,producingasmallamountofATPandNADH.Thepyruvatethenentersthemitochondria,whereitisconvertedintoacetyl-CoAandentersthecitricacidcycle.Thiscyclefurtheroxidizesacetyl-CoA,generatingmoreATP,NADH,andFADH2.Thefinalstage,oxidativephosphorylation,involvestheelectrontransportchainandchemiosmosis,wherethehigh-energyelectronsfromNADHandFADH2areusedtoproducealargeamountofATP.Thisprocessalsoproduceswaterasabyproduct.Cellularrespirationisessentialforprovidingtheenergyneededforvariouscellularactivities.8.参考答案：Biodiversityiscrucialformaintainingecosystemstabilitybecauseitenhancesecosystemresilience,supportsvariousecologicalservices,andprovidesapoolofgeneticresourcesforadaptationandevolution.Ecosystemswithhighbiodiversityarebetterabletowithstandenvironmentalchangesanddisturbances,suchasclimatechange,naturaldisasters,andpollution.Biodiversityalsocontributestoecosystemfunctionslikepollination,nutrientcycling,andwaterpurification,whicharevitalforthehealthandproductivityofecosystems.Additionally,geneticdiversitywithinspeciesprovidestherawmaterialfornaturalselection,enablingspeciestoadapttochangingenvironmentsandsurviveovertime.解析：Biodiversity,thevarietyoflifeinallitsforms,isacornerstoneofecosystemstabilityandfunction.Highbiodiversityenhancesecosystemresiliencebyprovidingmultiplespeciesthatcanperformsimilarroles,reducingtheimpactofspeciesloss.Thisredundancyensuresthatecosystemprocesses,suchaspollination,decomposition,andnutrientcy