ACT全真模拟试题（含详细答案解析）

ACT全真模拟试题（含详细答案解析）本套试题严格参照美国ACT官方考试题型、难度、出题逻辑编制，包含英语、数学、阅读、科学推理四个必考模块，题型配比、考点分布贴合正式考试，解析详细易懂，适合日常模考、专项刷题备考。考试说明1.考试总时长：175分钟（不含涂卡、休息时间）2.题型分值：英语75题、数学60题、阅读40题、科学推理40题，总分36分3.答题要求：客观单选题，选错、不选均不得分，无倒扣分机制第一部分：English英语（75题，45分钟）考点范围：语法结构、标点符号、句式修辞、段落逻辑、篇章主旨、词汇辨析Passage1Thelocalcommunitygarden,whichwasestablishedtenyearsago,hasbecomeavitalpartofneighborhoodlife.Volunteersofallagestendtotheplots,plantingvegetables,flowers,andnativeherbs.Manyresidentsvisitthegardendaily,notonlytomaintaintheirplantsbutalsotochatwithneighborsandsharegardeningtips.1.Whichchoicebestmaintainsthesentencepatternalreadyestablishedintheparagraph?A.NOCHANGEB.thathadbeenestablishedtenyearspriorC.itwasfoundedtenyearsagoD.havingbeenbuilttenyearsbefore2.Thewriterwantstoaddadetailthatemphasizesthegarden’scommunityvalue.Whichchoicedoesthatbest?A.Eachplotissmallandeasytomanageforbeginners.B.Ithostsmonthlyworkshopsforkidsandseniorcitizensalike.C.Thegardenreceivessmalldonationsfromlocalbusinesses.D.Mostplantsgrowwellinthearea’smildclimate.Passage2Earlymorninghikingisoneofthemostrewardingoutdooractivities.Theairiscrispandquiet,freefromthenoiseofdaytimetraffic.Birdssingsoftly,andsunlightfiltersthroughthetreeleavesinthin,goldenstreaks.Hikersoftenfindthatthispeacefulstarttothedayclearstheirmindsandbooststheirenergyforhoursafterward.3.Themainpurposeoftheparagraphisto:A.explainhowtoprepareforamorninghike.B.describethebenefitsandbeautyofmorninghiking.C.comparemorninghikingwithotheroutdoorsports.D.arguethathikingisbetterthanindoorexercise.4.Selectthecorrectpunctuationfortheunderlinedportion.Manysmalltownsrelyontourism(whichsupportslocalshops,cafes,andhotels)formostoftheirannualincome.A.NOCHANGEB.tourism,whichsupportslocalshops,cafes,andhotels,C.tourismwhichsupportslocalshopscafesandhotelsD.tourism;whichsupportslocalshops,cafes,andhotels英语剩余高频真题（精简核心题型）5.Afterfinishingherhomework,Lucyspendsanhoureveryeveningreadingnovels,writingjournals,andpracticingherpiano.A.NOCHANGEB.practicepianoC.practicingpianoplayingD.topracticeherpiano6.Neithertheteachernorthestudentsissatisfiedwiththeresultofthegroupproject.A.NOCHANGEB.areC.wasD.werebeing第二部分：Mathematics数学（60题，60分钟）考点范围：代数、几何、三角函数、统计概率、基础算数、函数图像基础代数题型1.If3x+7=28,whatisthevalueof2x-5?A.7B.9C.11D.132.Simplifytheexpression:4(2x-3)+6x+5A.14x-7B.10x-12C.14x+17D.8x-7几何题型3.Arectanglehasalengthof8cmandaperimeterof26cm.Whatisitsareainsquarecentimeters?A.40B.48C.36D.524.Thesumoftheinterioranglesofaregularhexagonis:A.360°B.540°C.720°D.900°统计与概率题型5.Abagcontains5redballs,3blueballsand2greenballs.Whatistheprobabilityofrandomlypickingablueball?A.1/5B.3/10C.1/3D.1/2函数题型6.Forthelinearfunctiony=3x-4,whatistheslopeandy-intercept?A.slope=3,y-intercept=4B.slope=3,y-intercept=-4C.slope=-4,y-intercept=3D.slope=-3,y-intercept=4第三部分：Reading阅读（40题，35分钟）考点范围：小说叙事、人文社科、自然科学、历史传记，考察主旨、细节、推理、词义、篇章逻辑Passage(SocialScience)Urbanpubliclibrarieshavelongservedasinclusivepublicspacesforcommunities.Unlikeprivatebookstoresandpaidlearninginstitutions,librariesofferfreeaccesstobooks,digitalresources,studyrooms,andculturalactivitiesforpeopleofallagesandeconomicbackgrounds.Inrecentdecades,asdigitalmediahasbecomemainstream,manypeoplepredictedthatphysicallibrarieswouldfadeaway.However,modernlibrarieshaveadaptedactively.Theynowhostskilltrainingcourses,parent-childreadingactivities,andcommunitysharingmeetings,transformingfromsimplebookstoragespacesintocomprehensivecommunityservicecenters.Thesechangeshavehelpedlibrariesmaintaintheirirreplaceablevalueinurbanlife.1.Whatisthemainideaofthepassage?A.Publiclibrariesprovidefreebooksforlocalresidents.B.Modernlibrarieshaveupdatedfunctionsandretainedcommunityvalue.C.Digitalmediahasgreatlyimpactedtraditionallibraries.D.Librariesaremoreusefulthanbookstoresforordinarypeople.2.Accordingtothepassage,whatmakeslibrariesdifferentfromprivatebookstores?A.Theyhavemoreabundantbookresources.B.Theyofferfreepublicresourcesandservices.C.Theyholdmoreculturalactivities.D.Theyadaptfastertosocialchanges.3.Theword“fadeaway”mostnearlymeans:A.disappeargraduallyB.expandquicklyC.changecompletelyD.cooperateclosely4.Whatcanbeinferredaboutmodernlibrariesfromthepassage?A.Theynolongerstorealargenumberofphysicalbooks.B.Theirserviceformsaremorediversethanbefore.C.Theyonlyservelocalchildrenandteenagers.D.Theyrelyongovernmentdonationstooperate.第四部分：Science科学推理（40题，35分钟）考点范围：物理、化学、生物、地理，考察图表分析、数据推理、实验逻辑、现象总结ResearchSummaryPassageScientistsconductedanexperimenttostudytheeffectoftemperatureonthegerminationrateofsunflowerseeds.Threegroupsofsunflowerseeds(100seedspergroup)wereplacedinenvironmentswithdifferentconstanttemperatures,withthesamehumidity,lighttimeandsoilconditions.Thegerminationstatuswasrecordedafter7days.Group1:Temperature15℃,Germinationrate:62%Group2:Temperature25℃,Germinationrate:89%Group3:Temperature35℃,Germinationrate:71%Allotherenvironmentalvariablesremainedunchangedthroughouttheexperiment.1.Whatistheindependentvariableinthisexperiment?A.GerminationrateB.TemperatureC.HumidityD.Numberofseeds2.Accordingtotheexperimentaldata,whichtemperatureismostsuitableforsunflowerseedgermination?A.15℃B.25℃C.35℃D.Cannotbedetermined3.Whichofthefollowingstatementsisconsistentwiththeexperimentalresults?A.Thehigherthetemperature,thehigherthegerminationrate.B.Lowtemperatureismoresuitableforgerminationthanhightemperature.C.Moderatetemperaturecanmaximizethegerminationrate.D.Temperaturehasnoobviouseffectonseedgermination.4.Tomaketheexperimentalresultsmoreaccurate,researchersshould:A.ChangethesoilconditionofeachgroupB.RepeattheexperimentmultipletimesC.Increaselighttimeforhigh-temperaturegroupsD.Usedifferentkindsofplantseeds完整答案+超详细解析一、English英语答案解析1.答案：A解析：原句为非限制性定语从句，语法结构完整、时态正确，符合篇章一般现在时的叙事基调。B选项时态错误，prior用词生硬；C选项句式杂糅，两个完整句子无连词衔接；D选项havingbeendone结构冗余，不符合书面正式表达。2.答案：B解析：题干要求突出社区价值，B选项的月度公益活动、全年龄段服务直接体现社区联动意义。A侧重种植难度、C侧重资金来源、D侧重气候条件，均与社区核心价值无关。3.答案：B解析：文段全程描写清晨徒步的环境美感、身心益处，未提及徒步准备流程、运动对比、优劣争论，因此核心主旨为描述徒步的美好与益处。4.答案：B解析：which引导非限制性定语从句，修饰tourism，从句前后必须加逗号分隔。A括号用法不适合书面长句修饰；C缺少标点，句式混乱；D分号使用错误，分号不可连接主句与从句。5.答案：A解析：平行结构考点，reading、writing、practicing三个动名词并列，结构统一、语法正确，其余选项均破坏句式平行性。6.答案：B解析：主谓一致考点，neither...nor...句型遵循“就近原则”，靠近谓语的主语students为复数，全文为一般现在时，因此谓语用are。二、Mathematics数学答案解析1.答案：A解析：解方程3x+7=28，得3x=21，x=7；代入2x-5，2×7-5=7。2.答案：A解析：去括号合并同类项，原式=8x-12+6x+5=14x-7。3.答案：A解析：矩形周长公式=2(长+宽)，26÷2-8=5cm（宽）；面积=8×5=40cm²。4.答案