ISSAT中级全真模拟试题（含详细答案解析）

ISSAT中级全真模拟试题（含详细答案解析）适用年级：5-8年级考试时长：90分钟满分：100分考试说明：本套试题完全贴合ISSAT官方考试题型，包含词汇、阅读、数学、逻辑四大核心模块，题目均为考场高频题型，无偏题怪题，答题结束后可对照文末详细解析核对答案。第一部分：词汇与同义词（每题2分，共20分）选出与题干单词意思最相近的选项1.BriskA.SlowB.LivelyC.DarkD.Quiet2.DilemmaA.SimplechoiceB.ToughproblemC.HappymoodD.Clearplan3.GenerousA.SelfishB.KindandgivingC.StrictD.Shy4.VacantA.FullB.EmptyC.DirtyD.Bright5.PersistA.GiveupB.KeepgoingC.RunawayD.Forget6.CautiousA.CarefulB.CarelessC.BraveD.Lazy7.DiverseA.SameB.DifferentC.OrdinaryD.Common8.ValuableA.WorthlessB.PreciousC.CheapD.Small9.SwiftA.FastB.SlowC.SoftD.Weak10.GratefulA.ThankfulB.AngryC.SadD.Tired第二部分：阅读理解（每题3分，共30分）PassageManypeoplethinkthatnatureisquietandpeaceful,butwildplacesarealwaysfullofactivity.Forestanimalsfollowstrictdailyrulestosurvive.Mostsmallbirdswakeupatdawntosearchforinsectsandseeds,whicharetheirmainfood.Theystayactiveinthemorningwhentheweatheriscoolandpredatorsarelessalert.Asthesunrisesandtemperaturesincrease,birdshideinthickleavestorest.Thishelpsthemsaveenergyandavoidoverheating.Inthelateafternoon,theycomeoutagaintofeedbeforenightfalls.Forforestcreatures,everypartofthedayhasaclearpurpose.Theirlivinghabitsarenotrandom,butformedbylong-termadaptationtonature.Humanactivitieshavechangedmanyforestenvironmentsinrecentyears.Noisefromroadsandbuildingsdisturbsbirds’restingandfeedingtime.Somebirdspecieshavechangedtheirdailyscheduletoadapttohumaninterference,whileafewrarebirdshavelosttheirlivingareasandbecomeendangered.Protectingwildforestsisnotonlygoodforanimals,butalsohelpskeepthebalanceofnature.Acompleteforestecosystemcancleanair,storewaterandprovidehomesforcountlesslivingthings.Questions11.Whendomostsmallbirdslookforfood?A.AtnightB.IntheearlymorningC.AtnoonD.Inthelateevening12.Whydobirdshideinleavesatnoon?A.ToavoidhumanbeingsB.TosaveenergyandavoidheatC.TobuildnestsD.Tohidefood13.Theword“random”inparagraph2mostprobablymeans?A.UnplannedB.RegularC.UsefulD.Old14.Whatproblemdohumanactivitiesbringtoforestbirds?A.MorefoodchoicesB.DisturbanceoftheirlivinghabitsC.CoolerlivingenvironmentD.Largerlivingareas15.Whatisthemainideaofthepassage?A.ThebeautyofforestsceneryB.DailyhabitsofforestbirdsandtheinfluenceofhumanactivitiesC.AllendangeredbirdspeciesD.HowhumansbuildforestsPassage2Readingisaskillthatbenefitspeopleforalifetime.Unlikewatchingvideosorlisteningtoshortaudio,readingrequirespeopletofocus,thinkandimagineactively.Whenwereadastory,webuildscenesinourmindsandunderstandthecharacters’feelings.Whenwereadpopularsciencearticles,welearnnewknowledgeandbroadenourhorizons.Manystudentsthinkreadingisboringbecausetheyonlyreadbooksrequiredbyschool.Infact,thereareallkindsofinterestingbooks:adventurestories,animalbiographies,historytalesandsciencefictions.Choosingbookstheyareinterestedincanmakereadingarelaxinghobbyinsteadofahardtask.Keepingadailyreadinghabitcanslowlyimprovepeople’swritingabilityandlogicalthinking.Peoplewhosticktoreadingarebetteratexpressingtheirideasandsolvingproblems.Nomatterhowbusypeopleare,spending20minutesreadingeverydaywillbringgreatprogressovertime.Questions16.Whatistheadvantageofreadingcomparedwithwatchingvideos?A.ItisfasterB.ItneedsactivethinkingandimaginationC.ItismorepopularD.Ittakeslesstime17.Whydosomestudentsfeelreadingisboring?A.Theyonlyreadschool-requiredbooksB.AllbooksaredifficulttounderstandC.TheyhavenotimetoreadD.Readingcannotbringknowledge18.WhichkindofbookisNOTmentionedinthepassage?A.AdventurestoriesB.AnimalbiographiesC.TravelguidesD.Sciencefictions19.Whatbenefitcandailyreadingbring?A.MakepeoplelazierB.ImprovewritingandthinkingabilityC.HelppeoplefinishhomeworkquicklyD.Letpeoplemakemorefriends20.Whatdoesthewriterwanttotellus?A.StudentsmustreadtextbookseverydayB.ReadingisavaluablehabitworthkeepingC.WatchingvideosisuselessD.Onlyinterestingbooksareworthreading第三部分：数学（每题3分，共30分）21.Calculate:24×(150÷6)=?A.500B.600C.700D.80022.Aboxcontains48candies.Theratioofstrawberrycandiestomilkcandiesis3:5.Howmanymilkcandiesarethere?A.18B.24C.30D.3623.Theaverageoffivenumbersis32.Ifonenumber20isremoved,whatistheaverageoftheremainingfournumbers?A.30B.35C.38D.4024.Arectanglehasaperimeterof60cm.Itslengthis18cm.Whatisitsarea?A.216cm²B.324cm²C.144cm²D.288cm²25.3/8ofanumberis27.Whatis5/9ofthisnumber?A.30B.40C.45D.5026.Ashopsellsacoatfor$120,whichisa20%discountofftheoriginalprice.Whatistheoriginalprice?A.$140B.$150C.$160D.$18027.Tomwalks3.6kilometersin48minutes.Atthisspeed,howmanykilometerscanhewalkinonehour?A.4.2kmB.4.5kmC.4.8kmD.5.0km28.Thesumoftwoconsecutiveintegersis87.Whatisthelargernumber?A.43B.44C.45D.4629.Solvetheequation:3x-15=2x+9A.x=24B.x=18C.x=12D.x=630.Acylindricalwatercuphasabaseradiusof3cmandaheightof10cm.Whatisitsvolume?(π=3.14)A.282.6cm³B.94.2cm³C.314cm³D.188.4cm³第四部分：逻辑推理（每题2分，共20分）31.Findthenextnumberinthesequence:2,6,12,20,?A.28B.30C.32D.3632.Findtheoddoneout:A.AppleB.BananaC.CarrotD.Grape33.IfRED=27,BLUE=40,whatisGREEN?A.35B.49C.52D.6034.Alldogsareanimals.Someanimalscanfly.Therefore:A.AlldogscanflyB.NodogscanflyC.SomedogsmayflyD.Allflyinganimalsaredogs35.Completetheanalogy:PenistoWriteasKnifeisto?A.CutB.EatC.RunD.Draw36.Findthenextnumber:1,4,9,16,?A.20B.25C.28D.3237.LilyistallerthanLucy.LucyisshorterthanMike.MikeistallerthanLily.Whoistheshortest?A.LilyB.LucyC.MikeD.Cannottell38.Findtheoddoneout:A.TriangleB.SquareC.CircleD.Rectangle39.Completetheanalogy:HotistoColdasDayisto?A.SunB.NightC.TimeD.Dark40.Abusdepartswith28passengers.12peoplegetoffatthefirststop,8peoplegeton.5peoplegetoffatthesecondstop,10peoplegeton.Howmanypassengersareonthebusfinally?A.29B.31C.33D.35完整答案+详细解析一、词汇与同义词（答案+解析）1.B解析：brisk意为轻快的、活跃的，lively（活泼的）为近义词；其余选项：缓慢的、昏暗的、安静的均不符。2.B解析：dilemma指进退两难的困境，对应难题；A简单选择、C愉悦心情、D清晰计划均错误。3.B解析：generous意为慷慨大方的，乐于给予的；A自私的、C严格的、D害羞的为反义词或无关词。4.B解析：vacant表示空的、未被占用的，与empty同义。5.B解析：persist意为坚持、持续，keepgoing（继续坚持）符合词义。6.A解析：cautious是谨慎的、小心的，与careful同义。7.B解析：diverse意为多样的、不同的，对应different。8.B解析：valuable是珍贵的、有价值的，precious为近义词。9.A解析：swift表示迅速的、敏捷的，fast符合词义。10.A解析：grateful意为感激的，thankful为同义词。二、阅读理解（答案+解析）11.B解析：文章第一段明确提到小鸟黎明时分早起觅食，对应清晨。12.B解析：第二段说明正午天气炎热，小鸟躲在树叶间休息，节省体力、避免过热。13.A解析：原文“它们的作息不是random，而是长期适应自然形成的”，可推断random意为无计划的、随意的。14.B解析：第三段指出人类噪音、建筑等活动干扰了鸟类的休息和觅食作息。15.B解析：文章前两段介绍森林鸟类的生活习性，第三段讲述人类活动的影响，最后一段说明保护森林的意义，核心主旨为B选项。16.B解析：第一段明确指出阅读需要主动专注、思考和想象，区别于短视频、音频。17.A解析：第二段提到学生觉得阅读枯燥，是因为只阅读学校指定书籍，缺乏兴趣读物。18.C解析：文中提到的书籍类型包含冒险故事、动物传记、科幻小说，未提及旅行指南。19.B解析：第三段说明日常阅读可以提升写作能力和逻辑思维能力。20.B解析：全文围绕阅读的价值、好处展开，倡导养成阅读习惯。三、数学（答案+详细解题步骤）21.B解析