2026年陕西省苏教版八年级英语第5单元课后练习题

2026年陕西省苏教版八年级英语第5单元课后练习题一、单项选择题（每题2分，共20分）1.AccordingtothepassageinUnit5,whatisthemainreasonwhymanystudentschoosetostudysciencesubjects?A.Becausesciencesubjectsareeasierthanothersubjects.B.Becausesciencesubjectscanhelpthemunderstandtheworldbetter.C.Becausesciencesubjectsaremoreinterestingthanartsubjects.D.Becausesciencesubjectshavemorejobopportunitiesinthefuture.（解析：根据第5单元课文内容，学生选择科学学科的主要原因是能够更好地理解世界，选项B符合单元主题。选项A、C、D虽然可能是部分学生的原因，但并非文章强调的核心观点。）2.Theteacheraskedthestudentstodesignascienceprojectfortheschoolfair.Whatshouldtheyincludeintheirprojectreportaccordingtotheunitinstructions?A.Onlythefinalresultsoftheexperiment.B.Onlythestepstheyfollowedduringtheexperiment.C.Boththestepsandtheresults,aswellasaconclusion.D.Onlytheconclusioniftheexperimentwassuccessful.（解析：单元课文明确要求科学项目报告应包含实验步骤、结果和结论，选项C最全面。选项A、B、D均不完整，违反单元写作要求。）3.Intheunit,Lilysharedherexperienceoflearningaboutrenewableenergy.Whatdidshefindmostsurprising?A.Thatsolarpanelscangenerateelectricityevenoncloudydays.B.Thatwindturbinescanproducemoreenergythansolarpanels.C.Thatrenewableenergycanhelpreducepollution.D.Thatrenewableenergyismoreexpensivethantraditionalenergy.（解析：根据单元课文，Lily最惊讶的是可再生能源能减少污染，选项C正确。选项A、B、D可能是其他知识点，但非Lily的惊讶点。）4.TheunitpassagementionsafamousscientistnamedMarieCurie.Whatachievementisshemostknownfor?A.Discoveringthetheoryofrelativity.B.Developingthefirstantibiotic.C.WinningtheNobelPrizeinPhysicsandChemistry.D.Inventingthefirstcomputer.（解析：单元课文重点介绍玛丽•居里的诺贝尔奖成就，选项C准确。其他选项分别属于爱因斯坦、弗莱明和查尔斯•巴贝奇的研究领域。）5.Whenthestudentswerediscussingsciencecareers,whatdidTomthinkwasthemostimportantskillforascientist?A.Beingabletosolvemathproblemsquickly.B.Havingalotofmoneytobuyexpensiveequipment.C.Beingabletoworkwellwithothers.D.Speakingmanydifferentlanguages.（解析：单元课文强调科学家需要团队合作能力，选项C符合。其他选项虽然可能是优势，但非单元强调的核心技能。）6.Theunitincludesareadingpassageaboutthehistoryofspaceexploration.WhatdidNeilArmstrongsaywhenhefirststeppedonthemoon?A."That'sonesmallstepforman,onegiantleapformankind."B."Iamthefirstpersontowalkonthemoon."C."Themoonhasnoatmosphere,soit'sverycold."D."IwasveryscaredwhenIlanded."（解析：单元课文引用了阿姆斯特朗的名言，选项A准确。其他选项可能是相关知识点，但非课文直接内容。）7.Intheunit,studentslearnedaboutdifferenttypesofrocks.Whichstatementistrueaccordingtothepassage?A.Allrocksareformedinthesameway.B.Igneousrocksareformedfromcooledmagmaorlava.C.Sedimentaryrocksareusuallyfoundundergroundonly.D.Metamorphicrockscannotbechangedbyheatorpressure.（解析：单元课文明确指出玄武岩由冷却的岩浆或熔岩形成，选项B正确。其他选项违反地质学基本知识。）8.Theunitincludesasectionaboutprotectingtheenvironment.Whatisthebestwaytoreduceplasticwaste,accordingtothepassage?A.Usingmoreplasticbagsinsteadofpaperbags.B.Recyclingplasticbottlesandcontainers.C.Throwingallplasticwasteintotheocean.D.Notbuyinganyproductsthatcomeinplasticpackaging.（解析：单元课文提倡回收塑料，选项B符合环保措施。其他选项违反环保原则。）9.Intheunit,studentsreadaboutafamousinventornamedThomasEdison.Whatdidheinventthatchangedtheworld?A.Thelightbulb.B.Thetelephone.C.Theairplane.D.Thecar.（解析：单元课文重点介绍爱迪生发明电灯，选项A正确。其他发明分别属于贝尔、莱特兄弟和卡尔•本茨。）10.Theunitincludesagrammarsectionaboutthepresentperfecttense.Whichsentencecorrectlyusesthistense?A."Ieatbreakfastat7:00everymorning."B."Shehasfinishedherhomework."C."Theygotoschoolbybus."D."Hewasplayingbasketballyesterday."（解析：单元课文强调现在完成时用于完成动作，选项B正确。其他选项分别属于一般现在时、一般现在时和一般过去时。）二、填空题（每题2分，共20分）1.AccordingtothepassageinUnit5,manystudentsfindsciencesubjects______becausetheyhelpexplainhowthingsworkintheworld.2.Theunitasksstudentstodesignascienceprojectthatincludesaclear______andadetailedexplanationofthesteps.3.Inthesectionaboutrenewableenergy,thetextmentionsthatsolarpanelscan______electricityfromsunlight.4.TheunitincludesareadingpassageaboutMarieCurie,whowontheNobelPrizein______and______intheearly20thcentury.5.Whendiscussingsciencecareers,thetextsuggeststhatbeingableto______withothersisanimportantskillforascientist.6.Theunitexplainsthatigneousrocksareformedwhenmagmaorlava______andcoolsdown.7.Accordingtothepassageaboutenvironmentalprotection,recyclingplasticbottleshelps______theamountofwasteinlandfills.8.Theunitincludesasectionaboutthehistoryofspaceexploration,mentioningthatNeilArmstrongwasthefirstpersonto______onthemoon.9.ThetextaboutThomasEdisonstatesthatheinventedthe______,whichbroughtelectricitytohomesaroundtheworld.10.Theunitgrammarsectionfocusesonthepresentperfecttense,whichisusedtotalkaboutactionsthat______completedinthepast.（参考答案：1.interesting2.hypothesis3.generate4.Physics,Chemistry5.work6.solidifies7.reduce8.walk9.lightbulb10.havebeen）三、判断题（每题2分，共20分）1.Theunitpassagesaysthatsciencesubjectsareonlyimportantforstudentswhowanttobecomescientists.（解析：单元课文强调科学对所有学生都很重要，选项错误。）2.Accordingtothetext,allscienceprojectsmustuseexpensiveequipmenttobesuccessful.（解析：单元课文强调项目创意和过程比设备重要，选项错误。）3.Theunitmentionsthatrenewableenergysourceslikewindandsolarpowercanhelpreducepollution.（解析：单元课文支持该观点，选项正确。）4.MarieCuriewasthefirstwomantowinaNobelPrize,butshedidnotreceiveanyotherawards.（解析：单元课文未提及她是否获得其他奖项，无法判断。）5.Theunitsuggeststhatbeinggoodatmathisthemostimportantskillforascientist.（解析：单元课文强调团队合作，非数学能力最重要，选项错误。）6.Igneousrocksarealwaysfoundnearvolcanoesbecausetheyareformedfromlava.（解析：单元课文指出玄武岩由冷却熔岩形成，但未限定地点，选项错误。）7.Recyclingalltypesofplasticwasteisthebestwaytoprotecttheenvironment.（解析：单元课文提倡分类回收，非全部回收，选项错误。）8.NeilArmstrongwasthefirstpersontowalkonthemoon,buthedidnotsayanythingmemorable.（解析：单元课文引用了他的名言，选项错误。）9.ThomasEdisoninventedmanythings,butthelightbulbwasnotoneofthem.（解析：单元课文明确指出电灯，选项错误。）10.Thepresentperfecttenseisonlyusedforactionsthathappenedyesterday.（解析：单元课文解释该时态用于过去完成动作，选项错误。）四、简答题（每题2分，共16分）1.Accordingtotheunit,whyaresciencesubjectsimportantforstudentsinthe21stcentury?（参考答案：科学学科帮助学生理解世界运作方式，培养批判性思维和解决问题的能力，为未来职业发展打下基础。单元课文强调科学对创新和社会进步的作用。）2.Whatarethemainstepsastudentshouldfollowwhendesigningascienceprojectfortheschoolfair?（参考答案：提出问题、形成假设、设计实验、收集数据、分析结果、得出结论。单元课文提供详细步骤指导。）3.Theunitmentionsrenewableenergysources.Whataretwoexamplesofrenewableenergy,andhowdotheywork?（参考答案：太阳能和风能。太阳能通过光伏板将光能转化为电能；风能通过风力发电机将风能转化为电能。单元课文解释了两种能源的工作原理。）4.WhydidMarieCuriewintheNobelPrize,andwhatdidherachievementshowaboutwomeninscience?（参考答案：因其在放射性研究领域的贡献。她的成就证明女性在科学领域具有与男性同等的能力和贡献。）5.Accordingtotheunit,whatisthemostimportantskillforascientist,besidesknowledgeofscience?（参考答案：团队合作能力。单元课文强调科学家需要与他人合作完成复杂研究。）6.Howdoigneousrocksdifferfromsedimentaryrocksaccordingtotheunitpassage?（参考答案：玄武岩由岩浆或熔岩冷却形成，质地坚硬；沉积岩由沉积物堆积形成，通常含有化石。单元课文对比了两种岩石的形成过程和特点。）7.Whatdoestheunitsuggeststudentscandotohelpprotecttheenvironment?（参考答案：减少使用一次性塑料、分类回收、节约能源等。单元课文提供了具体环保措施。）8.Theunitincludesagrammarsectionaboutthepresentperfecttense.Giveanexampleofhowtouseitcorrectly.（参考答案："Ihavefinishedmyhomework."表示过去完成的动作对现在有影响。单元课文解释了该时态的用法。）五、应用题（每题4分，共24分）1.Supposeyouaredesigningascienceprojectaboutrenewableenergyfortheschoolfair.Whatwouldyourprojectbeabout,andwhatstepswouldyoufollow?（参考答案：项目主题——设计小型太阳能小车。步骤：提出问题（太阳能能否驱动小车？）、形成假设（可以）、设计实验（搭建小车模型，使用太阳能电池板）、收集数据（测试不同光照条件下的速度）、分析结果（比较数据，验证假设）、得出结论（太阳能可以驱动小车，但效率受光照影响）。单元课文提供了项目设计框架。）2.Theunitpassagementionsthatmanystudentsfindsciencesubjectsdifficult.Howwouldyouexplaintoaclassmatethatscienceisactuallyinterestinganduseful?（参考答案：科学帮助我们解释生活中的现象，如天气变化、手机工作原理等。通过实验和探索，我们可以发现新事物。科学知识还能帮助解决实际问题，如环保、医疗等。单元课文强调科学的应用价值。）3.Accordingtotheunit,whatarethreethingsyoucandotoreduceplasticwasteathome?（参考答案：1.使用可重复使用的购物袋；2.购买无塑料包装的产品；3.分类回收塑料瓶和容器。单元课文提供了具体环保行动建议。）4.TheunitincludesareadingpassageaboutThomasEdison.Whatdidhisinventionofthelightbulbchangeaboutpeople'slives?（参考答案：电灯使人们可以在夜间使用照明，提高了生活质量，促进了工业发展。单元课文解释了电灯的深远影响。）5.Supposeyourscienceteacherasksyoutowriteaparagraphabouttheimportanceofteamworkinscience.Whatwouldyouwrite?（参考答案：科学项目通常需要多人合作，因为不同成员可以带来不同技能和观点。团队合作可以提高效率，解决复杂问题。单元课文强调合作的重要性。）6.Theunitgrammarsectionfocusesonthepresentperfecttense.Writeashortparagraphusingatleastfivedifferentpresentperfecttensesentences.（参考答案："Ihavelivedinthiscityforfiveyears.""Shehasfinishedherbook.""WehavevisitedParistwice.""Hehasneverseentheocean.""Theyhavetraveledtomanycountries."单元课文提供了该时态的练习。）【标准答案及解析】一、单项选择题1.B2.C3.C4.C5.C6.A7.B8.B9.A