2025-2026年重庆市北师大版九年级英语第7章课后练习题

2025-2026年重庆市北师大版九年级英语第7章课后练习题一、单项选择题（每题2分，共20分）1.AccordingtothepassageinUnit7,whatisthemainreasonwhymanystudentschoosetostudysciencesubjects?A.Becausesciencesubjectsareeasierthanothersubjects.B.Becausesciencesubjectscanhelpthemunderstandtheworldbetter.C.Becausesciencesubjectsaremoreinterestingthanartsubjects.D.Becausesciencesubjectshavemorejobopportunitiesinthefuture.解析：本题考查学生对单元7文章主旨的理解。文章明确指出，选择科学学科的主要原因是它们能帮助学生更好地理解世界，因此B项正确。A项错误，文章未提及科学学科比其他学科容易；C项错误，文章未比较科学与艺术学科的兴趣；D项错误，虽然科学学科有更多就业机会，但文章强调的是理解世界的重要性。干扰项设计上，A项利用“容易”这一常见误解，B项是正确答案，C项利用学科对比的干扰，D项利用就业机会的次要信息。2.Intheunit7readingmaterial,howdoestheauthordescribetheroleofscientistsinsolvingenvironmentalproblems?A.Scientistsareonlyresponsiblefordoingexperimentsinlaboratories.B.Scientistsaretheonlyoneswhocansolveenvironmentalproblems.C.Scientistsworkwithgovernmentsandcommunitiestofindsolutions.D.Scientistsignoreenvironmentalproblemsbecausetheyaretoocomplex.解析：本题考查学生对文章细节的理解。文章提到科学家通过研究提出解决方案，并与政府和社区合作，因此C项正确。A项错误，科学家不仅做实验；B项错误，文章强调合作而非科学家独力解决；D项错误，文章强调科学家重视问题。干扰项设计上，A项利用“实验室”的片面信息，B项利用“唯一”的绝对化表述，D项利用“复杂”的消极暗示。3.Accordingtotheunit7grammarsection,whichsentencecorrectlyusesthepassivevoice?A.Thestudentsweregivenascienceprojectlastweek.B.Thescienceprojectwasgiventothestudentslastweek.C.Ascienceprojectwasgivenbythestudentslastweek.D.Thestudentsgaveascienceprojectlastweek.解析：本题考查学生对被动语态的掌握。被动语态结构为“be动词+过去分词”，A项符合规则，因此A项正确。B项错误，tothestudents是介词短语，不是宾语；C项错误，bythestudents是施动者，但被动语态不需要施动者；D项是主动语态。干扰项设计上，B项利用“to”的介词属性，C项利用“by”的施动者信息，D项与题干结构相似但语态错误。4.Intheunit7writingtask,whatshouldstudentsincludeintheirparagraphaboutafamousscientist?A.Onlythescientist'snameandjobtitle.B.Onlythescientist'sachievementsandawards.C.Thescientist'slifestory,contributions,andimpact.D.Thescientist'spersonalhobbiesandfamilylife.解析：本题考查学生对写作任务要求的理解。文章建议写作时应包含科学家生平、贡献和影响，因此C项正确。A项错误，缺少必要信息；B项错误，仅列举成就不够全面；D项错误，个人生活非重点。干扰项设计上，A项利用“只有”的绝对化表述，B项利用“仅”的片面性，D项利用“个人”的非重点信息。5.Accordingtotheunit7vocabularylist,whatisthebesttranslationfor"innovative"?A.Creativeandoriginalinthinking.B.Carefulanddetailedinwork.C.Friendlyandhelpfulincommunication.D.Fastandefficientinaction.解析：本题考查学生对词汇的理解。文章将innovative解释为“富有创造性和原创性的”，因此A项正确。B项描述“细致”，C项描述“友好”，D项描述“高效”，均与词义不符。干扰项设计上，B项利用“细致”的干扰，C项利用“友好”的无关属性，D项利用“高效”的片面性。6.Intheunit7speakingactivity,whatshouldstudentsdowhentheydisagreewiththeirpartner?A.Ignorethedisagreementandcontinuetheconversation.B.Argueloudlyandshowanger.C.Politelyexpresstheiropinionandlistentotheotherperson.D.Immediatelychangetheirmindtoagree.解析：本题考查学生对口语活动技巧的理解。文章建议礼貌表达观点并倾听对方，因此C项正确。A项错误，忽视分歧不利于交流；B项错误，争吵无益；D项错误，不应盲目妥协。干扰项设计上，A项利用“忽视”的消极暗示，B项利用“争吵”的极端行为，D项利用“改变”的妥协倾向。7.Accordingtotheunit7readingpassage,whydosomestudentsfindsciencesubjectsdifficult?A.Becausesciencesubjectshavetoomanynewwords.B.Becausesciencesubjectsrequirelogicalthinking.C.Becausesciencesubjectsarenotasfunasartsubjects.D.Becausesciencesubjectsareonlyforsmartstudents.解析：本题考查学生对文章细节的理解。文章指出科学学科需要逻辑思维，因此B项正确。A项错误，词汇量不是主要难点；C项错误，文章未比较趣味性；D项错误，文章未提及智商要求。干扰项设计上，A项利用“新单词”的表面困难，C项利用“趣味性”的无关比较，D项利用“聪明”的刻板印象。8.Intheunit7grammarexercise,whichsentencecorrectlyusesthepresentperfecttense?A.Ihavereadthisbookyesterday.B.Shehasfinishedherhomeworknow.C.Theywenttothemuseumlastweek.D.Wewillvisitthesciencecentertomorrow.解析：本题考查学生对现在完成时的掌握。B项符合“have/has+过去分词”结构，因此B项正确。A项错误，时间状语“yesterday”与现在完成时不符；C项是过去时；D项是将来时。干扰项设计上，A项利用“yesterday”的时间冲突，C项利用“lastweek”的过去时，D项利用“tomorrow”的将来时。9.Accordingtotheunit7vocabularylist,whatisthebesttranslationfor"experiment"?A.Ascientifictesttodiscovernewthings.B.Atriptoasciencemuseum.C.Acompetitiontoshowskills.D.Ameetingtodiscussideas.解析：本题考查学生对词汇的理解。文章将experiment解释为“科学测试以发现新事物”，因此A项正确。B项描述“博物馆之旅”，C项描述“技能竞赛”，D项描述“讨论会议”，均与词义不符。干扰项设计上，B项利用“博物馆”的无关场景，C项利用“竞赛”的干扰，D项利用“会议”的无关活动。10.Intheunit7writingtask,howshouldstudentsstarttheirparagraphaboutascienceexperiment?A.Withaquestionabouttheexperiment.B.Withthedatewhentheexperimenthappened.C.Withasentenceaboutthescientistwhodidit.D.Withacleartopicsentenceabouttheexperiment.解析：本题考查学生对写作技巧的理解。文章建议以明确主题句开头，因此D项正确。A项错误，问题开头不清晰；B项错误，日期非重点；C项错误，应先介绍实验本身。干扰项设计上，A项利用“问题”的引导干扰，B项利用“日期”的次要信息，C项利用“科学家”的背景信息。二、填空题（每空2分，共20分）1.Accordingtotheunit7passage,manystudentschoosetostudysciencebecauseit______helpthemunderstandhowthingsworkintheworld.解析：填入“can”，完整句意为“Manystudentschoosetostudysciencebecauseitcanhelpthemunderstandhowthingsworkintheworld.”，考查情态动词表能力。2.Intheunit7grammarsection,thepassivevoiceisoftenusedwhenthe______isunknownorunimportant.解析：填入“doer”，完整句意为“Thepassivevoiceisoftenusedwhenthedoerisunknownorunimportant.”，考查被动语态的省略条件。3.Accordingtotheunit7vocabularylist,theword"innovative"means______andoriginalinideas.解析：填入“creative”，完整句意为“Theword'innovative'meanscreativeandoriginalinideas.”，考查词汇核心含义。4.Intheunit7speakingactivity,itisimportantto______yourownideaspolitelywhenyoudisagreewithsomeone.解析：填入“express”，完整句意为“Itisimportanttoexpressyourownideaspolitelywhenyoudisagreewithsomeone.”，考查动词搭配。5.Accordingtotheunit7readingpassage,somestudentsfindsciencedifficultbecauseit______logicalthinking.解析：填入“requires”，完整句意为"Somestudentsfindsciencedifficultbecauseitrequireslogicalthinking."，考查动词表需求。6.Intheunit7grammarexercise,thepresentperfecttenseisusedtotalkaboutactionsthat______completedinthepast.解析：填入“havebeen”，完整句意为“Thepresentperfecttenseisusedtotalkaboutactionsthathavebeencompletedinthepast.”，考查完成时结构。7.Accordingtotheunit7vocabularylist,theword"experiment"referstoa______totestideasortheories.解析：填入“test”，完整句意为“Theword'experiment'referstoatesttotestideasortheories.”，考查词汇核心含义。8.Intheunit7writingtask,studentsshouldstarttheirparagraphwitha______sentencethatstatesthemainidea.解析：填入“topic”，完整句意为“Studentsshouldstarttheirparagraphwithatopicsentencethatstatesthemainidea.”，考查写作结构。9.Accordingtotheunit7readingpassage,scientistsoftenworkin______toconducttheirresearch.解析：填入“laboratories”，完整句意为“Scientistsoftenworkinlaboratoriestoconducttheirresearch.”，考查名词复数。10.Intheunit7speakingactivity,itisgoodto______toyourpartner'sideasbeforegivingyourownopinion.解析：填入“listen”，完整句意为“Itisgoodtolistentoyourpartner'sideasbeforegivingyourownopinion.”，考查动词搭配。三、判断题（每题2分，共20分）1.Accordingtotheunit7passage,allstudentsfindsciencesubjectsinterestingbecausetheyarerelatedtodailylife.解析：错误。文章指出部分学生觉得科学有趣，但未说明所有学生，且兴趣与日常生活相关性只是原因之一。2.Intheunit7grammarsection,thepassivevoicemustalwaysincludethedoer(by+subject).解析：错误。被动语态可以省略施动者，如“Thebookwasread.”，文章明确说明。3.Accordingtotheunit7vocabularylist,"innovative"and"creative"havethesamemeaning.解析：正确。文章将innovative解释为creativeandoriginal，两者意思相近。4.Intheunit7speakingactivity,itisacceptabletointerruptyourpartnerwhentheyarespeaking.解析：错误。文章强调礼貌交流，不应打断他人。5.Accordingtotheunit7readingpassage,scientistsonlyworkaloneinlaboratories.解析：错误。文章提到科学家与政府、社区合作，并非仅独自工作。6.Intheunit7grammarexercise,thepresentperfecttensecanbeusedtotalkaboutfutureplans.解析：错误。现在完成时用于过去动作对现在的影响，如“havevisited,”而非计划，计划用将来时。7.Accordingtotheunit7vocabularylist,"experiment"meansacompetition.解析：错误。文章将experiment解释为科学测试，而非竞赛。8.Intheunit7writingtask,studentsshouldwritealongparagraphwithmanydetails.解析：错误。文章建议段落应简洁，包含主题句和关键信息，而非冗长。9.Accordingtotheunit7readingpassage,sciencesubjectsareeasierthanartsubjects.解析：错误。文章未比较学科难度，仅讨论科学的重要性。10.Intheunit7speakingactivity,itisimportanttoagreewithyourpartnertoavoidarguments.解析：错误。文章建议表达不同意见，而非盲目同意。四、简答题（每题2分，共16分）1.Accordingtotheunit7passage,whydosomestudentsfindsciencesubjectsdifficult?参考答案：Somestudentsfindsciencesubjectsdifficultbecausetheyrequirelogicalthinkingandinvolvemanynewconcepts.Thepassagementionsthatunderstandingscientifictheoriescanbechallengingwithoutastrongfoundationinbasicprinciples.解析：文章明确指出科学学科需要逻辑思维和基础概念，难度源于理解理论，答案需涵盖这两点。2.Intheunit7grammarsection,howdoyouformthepassivevoice?参考答案：Toformthepassivevoice,use"be动词+过去分词."Forexample,"ThebookwasreadbyJohn."Here,"wasread"isthepassivestructure,and"byJohn"isoptional.解析：被动语态结构需明确，并举例说明施动者可省略，答案需包含规则和例句。3.Accordingtotheunit7vocabularylist,whatisthemeaningof"innovative"?参考答案："Innovative"meanscreativeandoriginalinideasormethods.Forexample,aninnovativesolutionisanewandeffectivewaytosolveaproblem.解析：词汇含义需解释清楚，并举例说明，答案需包含定义和例句。4.Intheunit7speakingactivity,whatshouldyoudoifyoudon'tunderstandyourpartner?参考答案：Ifyoudon'tunderstandyourpartner,youshouldaskthemtorepeatorexplaininsimplerterms.Politenessandpatiencearekeytoeffectivecommunication.解析：口语技巧需具体，答案需包含行动建议和态度要求。5.Accordingtotheunit7readingpassage,whatistheroleofscientistsinsolvingenvironmentalproblems?参考答案：Scientistsplayaroleinresearchingenvironmentalissuesandproposingsolutions.Theyworkwithgovernmentsandcommunitiestodevelopsustainablepractices.解析：文章内容需概括，答案需包含科学家的工作方式和合作对象。6.Intheunit7grammarexercise,whenshouldyouusethepresentperfecttense?参考答案：Usethepresentperfecttensetotalkaboutactionsthatstartedinthepastandcontinuetothepresent,oractionsthathavearesultnow.Forexample,"Ihavelivedhereforfiveyears."解析：时态用法需明确，答案需包含时间条件和例句。7.Accordingtotheunit7vocabularylist,whatisthemeaningof"experiment"?参考答案："Experiment"meansatesttodiscovernewthingsortesttheories.Forexample,scientistsexperimenttoseeifanewdrugiseffective.解析：词汇含义需解释清楚，并举例说明，答案需包含定义和例句。8.Intheunit7writingtask,howshouldyoustartyourparagraph?参考答案：Startyourparagraphwithatopicsentencethatstatesthemainidea.Forexample,"MarieCuriewasafamousscientistwhomadeimportantdiscoveriesinphysicsandchemistry."解析：写作技巧需具体，答案需包含主题句的定义和例句。五、应用题（每题4分，共24分）1.Writeashortparagraph(5-6sentences)aboutascienceexperimentyouhavedone.Includethepurpose,steps,andresults.参考答案：Lastweek,Iconductedanexperimenttoseehowplantsgrowwithdifferentamountsofsunlight.First,Iplantedtwobeansinseparatepots.Onepotreceivedsunlight,whiletheotherwaskeptinthedark.Afterthreedays,theplantinsunlightgrewtallerandhadmoreleaves.Theplantinthedarkwassmallerandyellow.Thisexperimentshowedthatsunlightisimportantforplantgrowth.解析：答案需包含实验目的、步骤、结果，并体现科学性，评分标准：目的1分，步骤1分，结果1分，逻辑连贯1分。2.Rewritethefollowingsentenceinthepassivevoice:"Theteachergaveusascienceproject."参考答案："Ascienceprojectwasgiventousbytheteacher."解析：被动语态需正确转换，评分标准：结构1分，时态1分，施动者处理1分，句意1分。3.Completethefollowingdialoguewithappropriatewordsfromtheunit7vocabularylist:StudentA:Whatdidyoulearninyourscienceclasstoday?StudentB:Ilearnedabout______(experiment)totestnewideas.Itwasvery______(innovative).StudentA:That'sinteresting!Whatwastheresult?StudentB:We______(find)thattheplantgrewbetterwithsunlight.参考答案：experiment,innovative,found解析：词汇填空需准确，评分标准：每空1分，共3分。4.Writeatopicsentenceforaparagraphaboutafamousscientist.参考答案："AlbertEinsteinwasabrilliantscientistwhomadegroundbreakingcontributionstophysics."解析：主题句需明确，评分标准：句式1分，内容1分，逻辑1分。5.Imagineyou