2025届河北省唐山市重点初中高三英语第一学期期末联考模拟试题含解析

2025届河北省唐山市重点初中高三英语第一学期期末联考模拟试题注意事项：1．答题前，考生先将自己的姓名、准考证号填写清楚，将条形码准确粘贴在考生信息条形码粘贴区。2．选择题必须使用2B铅笔填涂；非选择题必须使用0．5毫米黑色字迹的签字笔书写，字体工整、笔迹清楚。3．请按照题号顺序在各题目的答题区域内作答，超出答题区域书写的答案无效；在草稿纸、试题卷上答题无效。4．保持卡面清洁，不要折叠，不要弄破、弄皱，不准使用涂改液、修正带、刮纸刀。第一部分（共20小题，每小题1.5分，满分30分）1．Usuallydoctorsareunderstandably________aboutnewmedicinesbecauseoftheuncertaintyoftheireffects.A．considerateB．logicalC．optimisticD．cautious2．I’mverygratefultomyhighschoolteachers,without______helpIwouldn’tbesoexcellent.A．whom B．their C．which D．whose3．ProfessorLi________forhisinformativelecture,waswarmlyreceivedbythestudents.A．knownB．knowingC．havingknownD．tobeknown4．—When______leaveforJapan?—When______leaveforJapaniskeptsecret.”A．theywill,willthey B．willthey,theywillC．theywill,theywill D．willthey,willthey5．---WhatdoesPM2.5mean？---It'saprofessional_____________indicatingtheconditionofairpollution.A．number B．markC．term D．item6．Lifeteachesusnottoregretoveryesterday,forit________andisbeyondourcontrol.A．passed B．willpassC．haspassed D．hadpassed7．ThatAmericanshavenohistorywhileChinesehavenofuturesounds________;ithasraisedathoughtprovokingquestion,though.A．artificialB．arbitraryC．allergicD．reluctant8．Marybecame______homesickandcriticaloftheUnitedStates,soshefledfromherhomeinWestBloomfieldtoherhometowninAustria.A．completelyB．sincerelyC．approximatelyD．increasingly9．Nowtheworld’sattention________thestockingmarkets,astheyhavegreatinfluenceontheworld’seconomy.A．isfixingonB．isbeingfixedonC．hasfixedonD．hadbeenfixedon10．—Howlongdoyouthinkitwillbe________theStockMarketreturnstonormal?—Atleastoneyear,Iguess.A．when B．before C．until D．that11．AfterIleft_______LinchuanNo.2MiddleSchool,Ibegancollegeclassesin_______September2010.A．a;the B．不填;the C．the;the D．不填；不填12．，dear!Thingswon’tbeasbadasyouthink.Therecertainlywillbechancesforyou.A．Hurryup B．LookupC．Cheerup D．Makeup13．Difficultiesstrengthenthemind,_____labourdoesthebody.A．if B．asC．for D．so14．ManygasesintheatmosphereactuallyheatenergythatescapesfromtheEarth’ssurfacebacktotheearth.A．finding;reflecting B．found;reflectedC．found;toreflect D．found;reflect15．ThefamousbookFrankenstein,________byBritishnovelistMaryShelley,isthefirstworkofsciencefiction.A．writing B．havingwrittenC．written D．waswritten16．Theboss_________theemployeesariseinsalaryforages,butnothinghasoccurredyet.A．promisedB．hadpromisedC．wouldpromiseD．promises17．IkeepthepicturewhereIcanseeiteveryday,remindsmeofthedaysinmyhometown.A．that B．whichC．who D．when18．We

need

aspiritualfaith,oraphilosophy,itshould

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thistruth:ifyouchoosetofindthe

positive

ineverysituation,youwillbeblessed,andifyouchoosetofindtheawful,youwillbecursed.Aswithhappinessitself,thisis

________yourdecisiontomake.A．absolutelyB．totallyC．exactlyD．largely19．Hehasmadelittlepreparationfortheinterview,sothechanceofhimsucceedinginitis.A．slimB．fantasticC．obviousD．gentle20．Sincemanyformerdrugabusershavepsychologicalproblems,theyoftenneedsupportgroups_________theycantalkabouttheirstrugglesandfindnewwaystomanageintheworld.A．which B．whatC．where D．when第二部分阅读理解（满分40分）阅读下列短文，从每题所给的A、B、C、D四个选项中，选出最佳选项。21．（6分）Ifyoudon’thaveacollegedegree,you’reatgreaterriskofdevelopingmemoryproblemsorevenAlzheimer’s(老年痴呆).Educationplaysakeyroleinlifelongmemoryperformanceandriskformentaldisorder,andit'swelldocumentedthatthosewithacollegedegreepossessacognitive（认知的）advantageovertheirlesseducatedcounterpartsinmiddleandoldage.Now,alargenationalstudyfromBrandeisUniversitypublishedintheAmericanJournalofGeriatricPsychiatryshowsthatthosewithlessschoolingcansignificantlymakeupforpoorereducationbyfrequentlyengaginginmentalexercisessuchaswordgames,puzzles,reading,andlectures.“Thelifelongbenefitsofhighereducationformemoryinlaterlifearequiteimpressive,butwedonotclearlyunderstandhowandwhytheseeffectslastsolong,”saidleadauthorMargieLachman,apsychologist.Shesuggestedthathighereducationmayencouragelifelonginterestincognitiveefforts,whilethosewithlesseducationmaynotengageasfrequentlyinmentalexercisesthathelpkeepthememoryagile(敏捷地).Buteducationearlyinadulthooddoesnotappeartobetheonlyroutetomaintainyourmemory.Thestudyfoundthatintellectualactivitiesundertakenregularlymadeadifference.“Amongindividualswithloweducation,thosewhoareengagedinreading,writing,attendinglectures,doingwordgamesorpuzzlesonceaweekormorehadmemoryscoressimilartopeoplewithmoreeducation,”saidLachman.Thestudy,calledMidlifeintheUnitedStates,assessed3,343menandwomenbetweentheagesof32and84withameanageof56years.Almost40percentoftheparticipantshadatleasta4-yearcollegedegree.Theresearchersevaluatedhowtheparticipantsperformedintwocognitiveareas,verbalmemoryandexecutivefunction---brainprocessesinvolvedinplanning,abstractthinkingandcognitiveflexibility.Participantsweregivenabatteryoftests,includingtestsofverbalfluency,wordrecall,andbackwardcounting.Asexpected,thosewithhighereducationsaidtheyengagedincognitiveactivitiesmoreoftenandalsodidbetteronthememorytests,butsomewithlowereducationalsodidwell,explainedLachman.“Thefindingsarepromisingbecausetheysuggesttheremaybewaystoleveltheplayingfieldforthosewithlowereducationalachievement,andprotectthoseatgreatestriskformemorydeclines,”saidLachman.“Althoughwecannotruleoutthepossibilitythatthosewhohavebettermemoriesaretheoneswhotakeonmoreactivities,theevidenceisconsistentwithcognitiveplasticity(可塑性),andsuggestssomedegreeofpersonalcontrolovercognitivefunctioninginadulthoodbyadoptinganintellectuallyactivelifestyle.”1、Whatisthetextmainlyabout?A．Highereducationhasabettercognitiveadvantage.B．Bettermemoriesresultfromcollegedegree.C．Cognitiveactivitydoesamindgood.D．Pooreducationhasmoreriskofmemorydeclines.2、AccordingtotheresultofMargieLachman’sstudy,wecanconcludethat________.A．educationisresponsibleforthelifelongmemoryperformanceandriskformentaldisorderB．educationearlyinadulthoodcanbetheonlyroutetomaintainyourmemoryC．thosewithhighereducationdidbetteronthememoryteststhanthosewithlowereducationD．anintellectuallyactivelifestyledoeshelptomaintainyourmemory3、WhatdoweknowaboutthestudycalledMidlife?A．Participantseachweregivenabatterytotesttheirmemory.B．Theaverageageoftheparticipantsare56yearsold.C．Participantshadtoperforminoneofthetwocognitiveareas.D．Oneinfouroftheparticipantshada4-yearcollegedegree.4、WhyarethefindingsoftheLachman’sstudypromising?A．Thelowereducatedmayhavethesameopportunitiestokeepupmemory.B．Wemayhavewaystocurethepeoplewhohavememorydeclines.C．Adoptingadifferentlifestylecancontrolovercognitivefunctioning.D．Wecanfindoutthepossibilitytohavebettermemories.22．（8分）ItwasrushhouronthemorningofJune1intheWestTexascityofSanAngelo.HeatherSantellano,36,wasdrivingherwhite2012MazdaonHouston、HarteFrontageRoadwithhernine-year-olddaughterandten-year-oldsonintheback.Suddenly,aredpickuptruckcutthemoff.Santellanoturnedthewheelhardtotheright,sendingtheMazdaskiddingofftheroadanddownanembankment(堤)thatendedinadrop-offafterabout50feet.Ifthecardidn'tstop,itwouldgoairborneandplungeontotheroadsome20feetbelow.Thenabitofluck:Asthecarracedtowardtheedge,itsundercarriagegotstuckonthecementlipoftheembankmentledge,stoppingitcold.Theoccupants,however,werefarfromsafe.Thecarhadcometorestontopofaretainingwall,literallyteetering(摇摇欲坠)ontheedgeofdisaster.Onesuddenmovebyanyoneinsidecouldsenditover.JacobRodriguezwatchedthesceneunfoldfromthe'T'ruckRepairPlantwhereheworks.Thenheandfourothermenrantothecar.Theyleapedontothetrunktobalancetheweightastheterrifiedkidsinthebackseatwatched.Meanwhile,JulioVasquezandhisnephew,MarcoVasquez,weredrivingtotheirjabsatnearbyPremierAutomotive.JuliojumpedoutofthecartohelpwhileMarcowenttotheshop,grabbedaheavy-dutystrap(皮带)，andreturnedtotheswingingcar.HefastenedtheMazdatoanP-350truckthathadbeendrivenoverbyoneoftheotherrescuers.Withthecarsecured,thegroupcarefullyopenedthebackdoorsandhelpedthechildrenout.Buttheirdepartureshiftedthecar'sweight,causingittoleanforward.Themen,stillon-thetrunk,askedSantellanotojumpintothebackseattorebalancetheweight.Shedidandtheninchedoutthebackdoor.Finally,themencarefullygotoffthetrunk.Everyonewassafe.1、WhatdoweknowaboutHeatherSantellano?A．Shewasacarelessdriver. B．Shedrovehertwinstoschool.C．Sheranintoapickuptruck. D．Shemadeasharpturntoavoidthetruck.2、Whatdoestheauthorintendtodoinparagraph2?A．Stressthecomingofgoodfortune. B．Describethecar'sdangeroussituation.C．Addsomebackgroundinformation. D．Explainwhypeoplecametotherescue.3、Whatisthemostcriticalintherescueprocess?A．Balance. B．Cooperation.C．Calmness. D．Gravity.4、Whichofthefollowingstatementsisconsistentwiththethemeofthepassage?A．Persistencewillpayoff.. B．Oneintrouble,alltohelp.、C．Manyhandsmakelightwork. D．Lovemakestheworldgoround.23．（8分）Itisaquestionpeoplehavebeenaskingforages.Isthereawaytoturnbacktheagingprocess?Forcenturies,peoplehavebeenlookingfora“fountainofyouth.”Theideaisthatifyoufindamagicalfountain,anddrinkfromitswaters,youwillnotage.SpanishexplorerJuanPoncedeLeonsearchedforwaterswithmagicalpowersintheearly1500s.ButwhathefoundinsteadistheAmericanstateofFlorida.ResearchersinNewYorkdidnotfindanactualfountainofyouth,buttheymayhavefoundawaytoturnbacktheagingprocess.Itappearstheanswermaybehiddenrightbetweenyoureyes,inanareacalledthehypothalamus.Thehypothalamusispartofyourbrain.Itcontrolsimportantactivitieswithinthebody.CaiDongsheng,aprofessorattheAlbertEinsteinCollegeofMedicine,foundthathypothalamusstemcellsinfluencehowfastagingtakesplaceinthebodyaswell.Healsoreportedthatwhenthehypothalamusstartsaging,sodoesthebody.“Sowhenhypothalamusfunctionisindecline,particularlythelossofhypothalamusstemcells,andthisprotectionagainsttheagingdevelopmentislost,iteventuallyleadstoaging.”Usingthisinformation,theresearchersbegantryingtoactivate(激活)orenergizethehypothalamusinlaboratorymice.Theydidthisbyinjecting(注射)theanimalswithstemcells.Later,theresearchersexaminedtissuesandtestedforchangesinbehavior.Theylookedforchangesinthestrengthoftheanimals’muscles.Theyalsostudiedthesocialbehaviorandcognitive(认知)abilityofthemice.Theresearcherssaytheresultsshowthatthetreatmentslowedagingintheanimals.Caisaysinjectingmiddle-agedmicewithstemcellsfromyoungermicehelpedtheolderanimalslivelonger.Thesefindingscouldleadtonewwaystohelpdoctorsidentifyandtreatanynumberofhealthissuesconcerningagingproblems.Ifthemicecanlivelonger,doesthatmeanpeoplecouldhavelongerlives?ThisisthequestionCaiandhisteamarethinkingabout.1、WhatdidJuanPoncedeLeonfind?A．TheAmericanstateofFlorida.B．Magicalpowers.C．AFountainofyouth.D．Awaytostoptheagingprocess.2、Whatdoweknowaboutthehypothalamus?A．Itislocatedintheeyes.B．Itstartsagingduetotheincreaseofitsstemcells.C．Itplaysakeyroleincontrollingtheagingprocess.D．Itfunctionswellwhenthebodystartsaging.3、Whatdidtheresearchersdoduringtheexperiment?A．Theystrengthenedthemusclesofthemice.B．Theyexaminedtissuesandtestedthebehaviourofmice.C．Theyinjectedthestemcellsintotheyoungermice.D．Theychangedthesocialbehaviorandcognitiveabilityofthemice.4、Whatwouldtheresearchersprobablydonext?A．Injectstemcellsofmiceintohumans.B．Researchonthecognitivepsychology.C．Helpthemicelivelonger.D．Seeifanti-agingeffectsalsoworkinhumanbeings.24．（8分）Istillremembermyhandsandmyfingersstillremember—whatusedtolieinstoreforusonourreturntoschoolfromtheholidays.Thetreesintheschoolyardwouldbeinfullleafagainandtheoldleaveswouldbelyingaroundlikeamuddyseaofleaves.“Getthatallsweptup!”theheadmasterwouldtellus.“Iwantthewholeplacecleanedup,atonce!”Therewasenoughworkthere,tolastoveraweek.Especiallysincetheonlytoolswithwhichwewereprovidedwereourhands,ourfingers,ournails.“Nowseethatit’sdoneproperly,andbequickaboutit,”theheadmasterwouldsaytotheelderpupils,“oryou’llhavetoanswerforit!”Soatanorderfromtheelderboyswewouldalllineuplikepeanutsabouttocutandgatherincrops.Iftheworkwasnotgoingasquicklyastheheadmasterexpected,thebigboys,insteadofgivingusahelpinghand,usedtofinditsimplertobeatuswithbranchespulledfromthetrees.Inordertoavoidtheseblows,weusedtobribe(贿赂)theelderboyswiththejuicycakesweusedtobringforourmiddaymeal.Andifwehappenedtohaveanymoneyonus,thecoinschangedhandsatonce.Ifwedidnotdothis,orifwewereafraidofgoinghomewithanemptystomachoranemptypurse,theblowswereredoubled.Theyhitussoviolentlyandwithsuchevilenjoymentevenadeafanddumbpersonwouldhaverealizedthatwewerebeingbeatennotsomuchtomakeusworkharder,hutrathertobeatusintoastateofobedience(服从)inwhichwewouldbeonlytoogladtogiveupourfoodandmoney.Occasionallyoneofus,wornoutbysuchcalculatedcruelty,wouldhavethecouragetocomplaintotheheadmaster.Hewouldofcoursebeveryangry,butthepunishmenthegavetheelderboyswasalwaysverysmall—nothingcomparedtowhattheyhadclonetous.Andthefactisthathowevermuchwecomplained,oursituationdidnotimproveintheslightest.Perhapsweshouldhaveletourparentsknowwhatwasgoingon,butsomehowweneverdreamedofdoingso;Idon’tknowwhetheritwasloyaltyorpridethatkeptussilent,butIcanseenowthatwewerefoolishtokeepquietaboutit,forsuchbeatingwascompletelyforeigntoournature.1、Thestatement“myhandsandmyfingersstillremember”(Para.1)meansthat________.A．theauthorseldomdidsuchhardworkasthecleaningupB．theauthor’shandswerehisonlytoolforthecleaningC．theauthor’shandswereseverelyinjuredinthecleaningupD．theauthorwasbulliedbythebigboysinthecleaningup2、Theheadmasterwouldtellthestudentstocleanuptheschoolyardatthebeginningofthetermbecause________.A．thestudentsdidn’tfinishtheirhomeworkB．theschoolyardwerecoveredwithmudC．hewastoolazyD．thereweremanyfallenleavesontheground3、Theheadmasteraskedtheelderboysto________.A．beatthosewhoworkedslowlyB．treatthesmallboysaspeanutsC．lakechargeoftheprocessofthecleaningD．dothecleaningallbythemselves4、AccordingtoPara.3,iftheauthorhadanymoneyonhim,hemostprobably________.A．gaveittothebigboyssoastopleasethemB．gaveitasabridetotheheadmasterC．spentitallonhismiddaymealD．spentitbuyingmiddaymealsforthebigboys25．（10分）Intelligentpeoplearemorelikelytotrustothers,whilethosewhoscoreloweronmeasuresofintelligencearelesslikelytodoso.OxfordUniversityresearchersbasedtheirfindingonananalysisofthe'GeneralSocialSurvey'.Theauthorssayoneexplanationcouldbethatmoreintelligentindividualsarebetteratjudgingcharactersandmayspendmoretimebuildingrelationshipswithpeopletheycantrust.Anotherreasoncouldbethatsmarterpeoplearebetteratweighingupsituationsandassessingwhetherornottheotherpersonwillholduphisorherendofabargain.“Intelligenceisshowntobelinkedwithtrustingothers.”saidthestudy'sleadauthor,NoahCarlofOxfordUniversity,“Thisfindingsupportswhatotherresearchershaveargued,namelythatbeingagoodjudgeofcharacterisadistinctpartofhumanintelligence.”Inaddition,thestudyshowsthatindividualswhoaremoretrustingarealsohappierwiththeirlivesandhadhigherlevelsofphysicalhealth.TheOxfordresearchersfound,however,thatthelinksbetweentrustandhealth,andbetweentrustandhappiness,arenotexplainedbyintelligence.Thefindingsconfirmedthattrustisavaluableresourceforanindividual,andisnotsimplyameasureofintelligence.Theauthorssaytheresearchissignificantbecausethestudyofsocialtrustcouldhavefar-reachingimplicationsinpublicwelfare,associaltrustcontributestothesuccessofimportantsocialinstitutions,suchaswelfaresystemsandfinancialmarkets.AccordingtoOrganizationforEconomicCo-operationandDevelopment,trustisinincreasinglyshortsupplyincurrentgeneration.Thisdeclinethreatensworldleaders’abilitytohandlesomeoftoday'skeychallengeslikeglobalwarming,andthepoliticalsystem.Therearegoodreasonstothinkthatgovernmentsshouldtrytodevelopmoretrustinsociety.Distrustusuallycausesfrictioninpersonalrelationships,careersandpoliticsamongothers,saysStephenCovey.Althoughmajorityofpeoplesaythattrustcanneverberestoredonceit'sbroken,Stephenfeelsitcanbebroughtback."It'snoteasy,ittakestime,butyoudoitthroughyourbehavior,notjustthingsyousay."1、ItcanbeconcludedfromtheanalysisoftheGeneralSocialSurveythat.A．intelligentpeopletendtoshowmoretrustinothersB．judgmentofcharactersdeterminesthelevelofintelligenceC．intelligenceaccountsfortheconnectionbetweentrustandhealthD．intelligentindividualsspendlesstimeoninterpersonalrelationship2、Whatdoestheunderlinedphraseinparagraph2probablymean?A．Makethebestofasituation.B．Sticktoone'spromiseasagreed.C．Figureoutthetruevalueofabargain.D．Makeanassessmentofadeal.3、Accordingtotheresearch,higherlevelofsocialtrustis.A．adecisivebasisforstablepoliticalsystemB．abasicsteptodealwithglobalwarmingC．acontributingfactortosuccessfulpublicinstitutionsD．acompletesolutiontointerpersonalconflicts4、Whenitcomestorebuildingtrust,Stephenismostlikelytoagreethat.A．actionsalwaysspeaklouderthanwordsB．behaviorisamirrorinwhicheveryoneshowshisimageC．behaviorislargelydeterminedbymindD．actionistheproperfruitofknowledge第三部分语言知识运用（共两节）第一节（每小题1.5分，满分30分）阅读下面短文，从短文后各题所给的A、B、C和D四个选项中，选出可以填入空白处的最佳选项．26．（30分）GoranKroppwasaSwedishadventurerandmountaineer.In1972,attheageofsix,withhisfather’shelp,he1Galdhopiggen,thehighestmountaininNorthernEurope.twenty-threeyearslater,hestoodonthehighestpeakintheworld,Qomolangma.Hisjourneytothe2showsjusthowindependent,persistent(坚持的),anddeterminedthis3manis.4mostpeoplearriveatthefoothillsofQomolangmabysomesortofmodern5,Kroppbicycled7,000milesfromhishomeinSweden.Travelingbybikewasnot6.Hestoppedmanytimesto7hisbikebecauseroughroadscausedmechanicalproblemsforhim.Inaddition,hewasrunafterbydogs,stungbyhornets(马蜂)andwascaughtintherainseveraltimesbeforehe8thebaseofthemountain.Kropp9toclimbQomolangmathesamewayhetraveledtothemountain:withoutthe10ofothersandwithoutmodernconveniences.Unlikeother11Kroppclimbedthemountainwithoutaguideorhelper.Hedidnot12bottledoxygentohelphim13athighaltitudes,andhecarriedallofhis14himselfinapackthatweighedabout140pounds.IttookKropp15triestoreachthetopofQomolangma.Thefirsttime,hehadto16only350feetfromthetopbecausetheweatherwastoodangerous.Justafewdaysearlier,atthatsameleveleightclimbershad17becauseofasuddensnowstorminthemountain.Hefeltdeepsorrowforthem,butbecamemore18.Themountaineerwaitedoutthestorm,19,andtriedagainafewdayslater.Thistime,hewas20.Afterhewalkeddownthemountain,hegotbackonhisbikeandrodethe7,000milesbacktoSweden.1、A．heardofB．dreamedofC．sawD．climbed2、A．topB．countryC．areaD．valley3、A．outstandingB．generousC．modestD．honest4、A．UnlessB．OnceC．WhileD．Because5、A．designB．vehicleC．theoryD．material6、A．boringB．easyC．tiringD．busy7、A．lockB．rideC．repairD．find8、A．leftB．reachedC．discoveredD．toured9、A．choseB．refusedC．agreedD．hated10、A．presenceB．approvalC．assistanceD．knowledge11、A．observersB．travelersC．mountaineersD．hikers12、A．gatherB．orderC．shareD．bring13、A．breatheB．walkC．liveD．stay14、A．medicinesB．foodC．clothesD．equipment15、A．twoB．threeC．manyD．several16、A．goonB．getupC．setoutD．turnback17、A．slippedB．wanderedC．diedD．injured18、A．astonishedB．determinedC．satisfiedD．discouraged19、A．hidB．stoppedC．survivedD．rested20、A．thoughtfulB．successfulC．doubtfulD．meaningful第二节（每小题1.5分，满分15分）阅读下面材料，在空白处填入1个适当的单词或括号内单词的正确形式。27．（15分）Breakfasthasbeencalledthemostimportantmealoftheday.Whileeverymealcounts,thefactsareonthetable:eatinginthemorninghaspositiveeffectsonhealthandonkids'1．(able)tolearn.What'sanutritiousbreakfast?Ameal2．(consist)offoodsfromatleasttwoofthefivefoodgroupsisthehealthiest，3．thetruthisthatnosh(小吃)ofnearlyanyfoodinthemorningisbetterthannone,especiallywhenitcomes4．kids.It'sagoodideatogetyourchildintothehabitofeatingbreakfastbeforehebeginskindergarten.That's5．youngsterswhoeatbreakfasttendtobehavebetterinschool.Hungermakesitharder6．(keep)yourmindfocusedonlearning,nomatterwhatyourage.Infact,studiesshowbreakfastskippersareoftenmorebad­temperedandhaveshorterattention.Whenyouforgeteatinginthemorning,bloodglucose(血糖)drops.Glucoseisthefuelcells'needtofunction,sobraincellsbecomeparticularlylazywhenglucoseconcentrationsareinsufficient.Withoutadequateenergy,yourmindsgetgray,blockingconcentrationandmemor