2025-2026年江西省人教版九年级英语第7章课后练习题

2025-2026年江西省人教版九年级英语第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主题的理解。根据第7章课后练习题中关于“Whydostudentschoosesciencesubjects?”的讨论，正确答案为B。选项A、C、D虽然可能是部分学生的原因，但并非主要原因，且与单元核心内容不符。2.Thepassagementionsthat"sciencecansolvemanyproblemsinourdailylife."Whichofthefollowingexamplesbestsupportsthisidea?A.Playingcomputergameshelpsstudentsrelaxafterclass.B.WatchingTVisagoodwaytolearnnewthings.C.Usingascientificexperimenttosolveahouseholdproblem.D.Readingbookscanimprovestudents'readingskills.解析：本题考查学生对单元中“scienceindailylife”这一主题的理解。根据第7章练习题中关于“sciencesolvingproblems”的案例，正确答案为C。选项A、B、D与科学解决生活问题无关，属于干扰项。3.Intheunit,welearnedaboutfamousscientists.WhichofthefollowingstatementsaboutMarieCurieistrueaccordingtothetext?A.ShewasborninGermanyandwontheNobelPrizeinPhysics.B.Shediscoveredradiumandpolonium,andwasthefirstwomantowintheNobelPrize.C.Shepreferredstudyingbiologybecauseshelikedanimalsmore.D.SheworkedwithAlbertEinsteintodevelopthetheoryofrelativity.解析：本题考查学生对单元中“famousscientists”这一部分的知识掌握。根据第7章练习题中关于MarieCurie的介绍，正确答案为B。选项A、C、D中的信息与单元内容不符，属于干扰项。4.Thepassagesuggeststhatstudentsshoulddevelopa"curiosityforscience."Whichofthefollowingactivitiescanhelpstudentsdothis?A.Memorizingsciencefactswithoutunderstandingthem.B.Watchingsciencedocumentarieswithoutthinking.C.Askingquestionsandconductingexperiments.D.Copyingnotesfromtheteacherwithoutparticipating.解析：本题考查学生对单元中“developingcuriosityforscience”这一主题的理解。根据第7章练习题中关于“howtobecuriousaboutscience”的讨论，正确答案为C。选项A、B、D与培养好奇心无关，属于干扰项。5.Theunitmentionsthat"scienceisagloballanguage."Whatdoesthismean?A.Scientistsfromdifferentcountriesspeakthesamelanguage.B.Scienceknowledgecanbeunderstoodbypeopleallovertheworld.C.Sciencesubjectsaremoreimportantthanlanguages.D.Scientistsmustlearnmanylanguagestodoresearch.解析：本题考查学生对单元中“scienceasagloballanguage”这一概念的理解。根据第7章练习题中关于“scienceisuniversal”的讨论，正确答案为B。选项A、C、D与单元内容不符，属于干扰项。6.Thepassagecomparessciencetoa"journey."Whatdoesthiscomparisonmean?A.Scienceisliketravelingtoanewplace.B.Scienceisaprocessofexplorationanddiscovery.C.Scientiststravelalottoattendconferences.D.Scienceismoreexcitingthantraveling.解析：本题考查学生对单元中“scienceasajourney”这一比喻的理解。根据第7章练习题中关于“scienceasexploration”的讨论，正确答案为B。选项A、C、D与比喻的含义不符，属于干扰项。7.Theunittalksabout"scienceandtechnology."Whichofthefollowingexamplesshowshowscienceandtechnologyworktogether?A.Apainterusesabrushtocreateart.B.Adoctorusesamicroscopetoseebacteria.C.Amusicianplaysaguitartomakemusic.D.Achefusesaknifetocutvegetables.解析：本题考查学生对单元中“scienceandtechnology”这一主题的理解。根据第7章练习题中关于“scienceandtechnologycollaboration”的案例，正确答案为B。选项A、C、D与科技结合无关，属于干扰项。8.Thepassagementionsthat"sciencecanbefun."Whichofthefollowingactivitiescanmakesciencefunforstudents?A.Doingrepetitiveexperimentswithoutthinking.B.Watchingboringsciencevideos.C.Conductingcreativeexperimentswithfriends.D.Readingsciencebookswithoutdoinganythingelse.解析：本题考查学生对单元中“sciencecanbefun”这一观点的理解。根据第7章练习题中关于“makingsciencefun”的讨论，正确答案为C。选项A、B、D与让科学变得有趣无关，属于干扰项。9.Theunitdiscusses"scienceinthefuture."Whichofthefollowingideasismentionedinthetext?A.Scientistswillusemagictosolveproblems.B.Robotswillreplaceallhumanjobs.C.Newtechnologieswillhelpussolveenvironmentalproblems.D.Schoolswillnolongerteachsciencesubjects.解析：本题考查学生对单元中“scienceinthefuture”这一主题的理解。根据第7章练习题中关于“futureofscience”的讨论，正确答案为C。选项A、B、D与单元内容不符，属于干扰项。10.Thepassagementionsthat"scienceneedsteamwork."Whichofthefollowingexamplessupportsthisidea?A.AsinglescientistwinsaNobelPrizeforadiscovery.B.Agroupofscientistsworktogetheronaproject.C.Astudentdoesalltheworkinascienceexperimentalone.D.Ateachergivesasciencelecturetotheclass.解析：本题考查学生对单元中“scienceneedsteamwork”这一观点的理解。根据第7章练习题中关于“teamworkinscience”的讨论，正确答案为B。选项A、C、D与团队合作无关，属于干扰项。二、填空题（每题2分，共20分）1.AccordingtothepassageinUnit7,sciencehelpsusunderstand________andsolveproblems.解析：根据第7章练习题中关于“scienceandunderstanding”的讨论，正确答案为“theworld”。2.TheunitmentionsthatMarieCuriediscovered________and________inthelate19thcentury.解析：根据第7章练习题中关于MarieCurie的介绍，正确答案为“radium”和“polonium”。3.Todevelopacuriosityforscience,studentsshould________and________.解析：根据第7章练习题中关于“developingcuriosity”的讨论，正确答案为“askquestions”和“conductexperiments”。4.Thepassagesuggeststhatscienceisagloballanguagebecauseitcanbeunderstoodbypeoplefrom________countries.解析：根据第7章练习题中关于“scienceasagloballanguage”的讨论，正确答案为“different”。5.Theunitcomparessciencetoajourneybecauseitinvolves________and________.解析：根据第7章练习题中关于“scienceasajourney”的比喻，正确答案为“exploration”和“discovery”。6.Thepassagementionsthatscienceandtechnologyworktogetherto________and________.解析：根据第7章练习题中关于“scienceandtechnologycollaboration”的讨论，正确答案为“solveproblems”和“improvelives”。7.Tomakesciencefun,studentscan________withtheirfriends.解析：根据第7章练习题中关于“makingsciencefun”的讨论，正确答案为“conductcreativeexperiments”。8.Theunitdiscussesthefutureofscience,suggestingthatnewtechnologieswillhelpus________problems.解析：根据第7章练习题中关于“futureofscience”的讨论，正确答案为“solveenvironmental”。9.Thepassagementionsthatscienceneedsteamworkbecausemanyproblemsrequire________and________.解析：根据第7章练习题中关于“teamworkinscience”的讨论，正确答案为“differentskills”和“共同努力”。10.Accordingtotheunit,oneofthereasonsstudentschoosesciencesubjectsisbecausetheycanhelpus________theworldbetter.解析：根据第7章练习题中关于“whystudentschoosescience”的讨论，正确答案为“understand”。三、判断题（每题2分，共20分）1.ThepassageinUnit7statesthatsciencesubjectsareeasierthanartsubjectsforallstudents.解析：错误。根据第7章练习题中关于“sciencevs.art”的讨论，难度因人而异，并非所有学生认为科学更容易。2.MarieCuriewasthefirstwomantowintheNobelPrize,andshewonitinbothPhysicsandChemistry.解析：正确。根据第7章练习题中关于MarieCurie的介绍，她确实是第一位获得诺贝尔奖的女性，且在物理学和化学领域获奖。3.Theunitsuggeststhatstudentsshouldnotaskquestionsinscienceclassbecauseitshowsalackofknowledge.解析：错误。根据第7章练习题中关于“developingcuriosity”的讨论，提问是培养科学兴趣的重要方式。4.Scienceisnotagloballanguagebecausedifferentcountrieshavedifferentwaysofdoingscience.解析：错误。根据第7章练习题中关于“scienceasagloballanguage”的讨论，科学知识具有普遍性，各国基本一致。5.Theunitcomparessciencetoajourneybecausescientistsalwaystraveltonewplacestodoresearch.解析：错误。根据第7章练习题中关于“scienceasajourney”的比喻，比喻强调探索和发现的过程，而非实际旅行。6.Scienceandtechnologyalwaysworktogethertocreatenewproducts,buttheyneverhelpsolveproblems.解析：错误。根据第7章练习题中关于“scienceandtechnologycollaboration”的讨论，科技不仅创造产品，也解决问题。7.Tomakesciencefun,studentsshouldonlydoexperimentsthatareeasyandquick.解析：错误。根据第7章练习题中关于“makingsciencefun”的讨论，科学实验的趣味性在于探索和挑战，而非简单快速。8.Theunitsuggeststhatinthefuture,schoolswillnotteachsciencesubjectsbecausetheyarenotimportantanymore.解析：错误。根据第7章练习题中关于“futureofscience”的讨论，科学教育仍然非常重要。9.Thepassagementionsthatscienceneedsteamworkbecauseonepersoncansolveallscienceproblemsalone.解析：错误。根据第7章练习题中关于“teamworkinscience”的讨论，许多科学问题需要不同技能的合作。10.Accordingtotheunit,themainreasonstudentschoosesciencesubjectsisbecausetheywanttobecomefamousscientists.解析：错误。根据第7章练习题中关于“whystudentschoosescience”的讨论，选择科学的原因多样，并非仅为了成名。四、简答题（每题2分，共16分）1.AccordingtothepassageinUnit7,whydostudentschoosesciencesubjects?参考答案：-Sciencesubjectscanhelpstudentsunderstandtheworldbetter.-Sciencesubjectshavemorejobopportunitiesinthefuture.-Somestudentsarecuriousaboutscienceandenjoyexploringnewthings.解析：根据第7章练习题中关于“whystudentschoosescience”的讨论，学生选择科学的原因包括理解世界、未来就业机会和好奇心。2.Theunitmentionsthatscienceisagloballanguage.Explainwhatthismeans.参考答案：-Scienceknowledgeandmethodscanbeunderstoodbypeopleallovertheworld.-Scientistsfromdifferentcountriescanworktogetheronthesameprojects.-SciencetextbooksandresearchpapersarewritteninlanguageslikeEnglish,whicharewidelyused.解析：根据第7章练习题中关于“scienceasagloballanguage”的讨论，科学具有普遍性，不同国家的科学家可以合作，科学文献使用通用语言。3.Describeonewaythatscienceandtechnologyworktogethertosolveproblems.参考答案：-Scienceprovidestheknowledgeandprinciples,whiletechnologyappliesthemtocreatesolutions.-Forexample,scientistsdiscovernewmaterials,andengineersusethemtomakebetterelectronics.-Technologyalsohelpsscientistsconductexperimentsmoreaccurately,suchasusingcomputerstoanalyzedata.解析：根据第7章练习题中关于“scienceandtechnologycollaboration”的讨论，科学提供理论，技术应用，两者结合解决问题。4.Theunitsuggeststhatstudentsshoulddevelopacuriosityforscience.Howcantheydothis?参考答案：-Askquestionsabouthowthingsworkandwhytheyhappen.-Conductexperimentstotesthypothesesandseeresults.-Readsciencebooksandwatchdocumentariestolearnmoreabouttheworld.-Discusssciencetopicswithclassmatesandteacherstogaindifferentperspectives.解析：根据第7章练习题中关于“developingcuriosity”的讨论，学生可以通过提问、实验、阅读和讨论培养科学兴趣。5.Accordingtotheunit,whatisthefutureofscience?参考答案：-Newtechnologieswillhelpussolveenvironmentalproblems,suchasclimatechangeandpollution.-Sciencewillcontinuetomakeourlivesbetterbycreatingnewmedicinesandtreatments.-Scientistswillexplorespaceandotherplanetstolearnmoreabouttheuniverse.解析：根据第7章练习题中关于“futureofscience”的讨论，未来科学将解决环境问题、改善生活、探索宇宙。6.Thepassagementionsthatscienceneedsteamwork.Whyisthisimportant?参考答案：-Manyscienceproblemsaretoocomplexforonepersontosolvealone.-Differentscientistshavedifferentskillsandknowledge,whichcancombinetocreatebettersolutions.-Teamworkallowsformoreideasandperspectives,leadingtomoreinnovativediscoveries.解析：根据第7章练习题中关于“teamworkinscience”的讨论，团队合作可以解决复杂问题，结合不同技能，促进创新。7.Howcansciencebemadefunforstudents?参考答案：-Conductcreativeexperimentsthatinvolvehands-onactivitiesandteamwork.-Usesciencegamesandsimulationstomakelearninginteractive.-Showsciencedocumentariesormoviesthatillustratescientificconceptsinanengagingway.-Encouragestudentstoexplorescienceintheirdailylives,suchasgardeningorcooking.解析：根据第7章练习题中关于“makingsciencefun”的讨论，科学可以通过实验、游戏、电影和日常生活实践变得有趣。8.Theunitcomparessciencetoajourney.Explainwhatthiscomparisonmeans.参考答案：-Scienceinvolvesexplorationanddiscovery,justliketravelingtonewplaces.-Scientistsaskquestionsandconductexperimentstofindanswers,similartohowtravelersexploreunknownareas.-Thejourneyofscienceiscontinuous,withnewdiscoveriesleadingtomorequestionsandfurtherexploration.解析：根据第7章练习题中关于“scienceasajourney”的比喻，科学强调探索和发现，过程持续不断。五、应用题（每题4分，共24分）1.Readthefollowingpassageandanswerthequestion:"Scienceislikeapuzzle.Eachpieceofknowledgehelpsusunderstandthewholepicturebetter.Scientistsarelikedetectives,alwayslookingforcluestosolvemysteriesabouttheworld.Byworkingtogether,theycanputallthepiecestogetherandmakegreatdiscoveries."Question:Whatdoesthepassagesuggestaboutscienceandteamwork?参考答案：Thepassagesuggeststhatscienceislikeapuzzle,andteamworkisessentialtosolveit.Scientistsworktogethertocombinedifferentpiecesofknowledge,similartohowdetectivesgathercluestosolvemysteries.Withoutteamwork,manyscientificproblemswouldbetoocomplextosolvealone.解析：根据第7章练习题中关于“teamworkinscience”的讨论，科学需要合作，如同拼图和侦探工作，团队合作才能解决问题。2.Imagineyouareastudentinascienceclass.Yourteacherasksyoutodesignasimpleexperimenttoexploretheeffectsofdifferentliquidsonplants.Describeyourexperimentandexplainhowitdemonstratestheimportanceofcuriosityinscience.参考答案：Experiment:3.Takethreeidenticalsmallplantsandplanttheminthesametypeofsoil.4.Wateroneplantwithwater,anotherwithmilk,andthethirdwithjuice.5.Observeandrecordtheplants'growthoveroneweek,notingchangesinleaves,stems,androots.ImportanceofCuriosity:Thisexperimentdemonstratescuriositybecauseitexploresaquestionabouthowdifferentliquidsaffectplantgrowth.Byasking"WhathappensifIusemilkorjuiceinsteadofwater?"andconductingtheexperiment,studentslearnaboutplantbiologyandtheimportanceofpropernutrition.Curiositydrivesthemtoinvestigateanddiscoveranswers.解析：根据第7章练习题中关于“developingcuriosity”的讨论，实验设计展示科学兴趣，通过提问和探索学习知识。6.Theunitmentionsthatscienceisagloballanguage.Provideanexampleofhowsciencehelpspeoplefromdifferentcountriesunderstandeachotherbetter.参考答案：Example:Climatechangeisaglobalproblemthataffectscountriesworldwide.Scientistsfromdifferentcountriesworktogethertostudyitscausesandeffects,sharingdataandresearch.Thiscollaborationhelpsallcountriesunderstandtheproblembetterandfindsolutions,suchasreducingcarbonemissions.Byusingscienceasacommonlanguage,peoplefromdifferentculturescanworktogethertoprotecttheplanet.解析：根据第7章练习题中关于“scienceasagloballanguage”的讨论，科学合作帮助不同国家解决共同问题，促进理解。7.Readthefollowingscenarioandanswerthequestion:"Twostudents,AlexandEmily,arelearningaboutfamousscientistsintheirscienceclass.AlexfindsMarieCurie'sstoryinspiringbecauseshewasthefirstwomantowintheNobelPrize.Emilythinksit'sinterestingthatCuriediscoveredradiumandpolonium.Whatcantheylearnfromeachotheraboutscience?"Question:WhatcanAlexandEmilylearnfromeachotheraboutscience?参考答案：AlexcanlearnfromEmilyaboutthespecificdiscoveriesandcontributionsofMarieCurie,suchasherworkwithradiumandpolonium.EmilycanlearnfromAlexaboutthebroaderimpactofCurie'sachievements,suchasbeingthefirstwomanNobellaureateandinspiringfuturegenerationsofscientists.Bysharingtheirperspectives,bothstudentsgainamorecompleteunderstandingofscienceanditshistory.解析：根据第7章练习题中关于“famousscientists”的讨论，学生可以互相学习具体发现和科学影响，促进全面理解。8.Theunitsuggeststhatsciencecanbefun.Describeafunscienceactivitythatyoucandowithyourfriendsandexplainwhyitisenjoyable.参考答案：Activity:Conducta"volcanoexperiment"usingbakingsoda,vinegar,andredfoodcoloring.Mixtheingredientsinabottletocreateafizzyeruption,simulatingavolcanicexplosion.Whyitisfun:Thisactivityisenjoyablebecauseitishands-on,visual,andexciting.Thefizzyreactionisvisuallyappealinganddemonstratesascientificprincipleinaplayfulway.Workingwithfriendsaddstothefun,astheycancollaborate,laugh,andlearntogether.Itmakesscienceaccessibleandengaging.解析：根据第7章练习题中关于“makingsciencefun”的讨论，实验活动有趣，动手、视觉、互动性强，促进科学兴趣。9.Imagineyouareplanningasciencefairproject.Yourtopicis"HowDoesMusicAf