2025-2026年天津市苏教版八年级英语下册第7单元阅读理解专项题库

2025-2026年天津市苏教版八年级英语下册第7单元阅读理解专项题库一、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：根据第7单元阅读材料中关于学生选择科学学科的原因分析，文章明确指出“Manystudentschoosesciencesubjectsbecausetheywanttounderstandhowthingsworkandmakeadifferenceintheworld.”因此正确答案为B。选项A、C、D虽然可能是部分学生的原因，但并非文章强调的主要动机，且具有迷惑性。）2.WhatdoesthepassageinUnit7suggestabouttheimportanceofteamworkinscientificresearch?A.Teamworkisonlyimportantforlargeprojects,notforsmallones.B.Teamworkcanonlybringproblems,notsolutions.C.Teamworkisnecessarybecausescientistsoftenhavedifferentideas.D.Teamworkisnotasimportantasindividualeffortinscience.（解析：文章中提到“Scienceoftenrequiresteamworkbecausedifferentpeoplehavedifferentskillsandknowledge.”这表明团队合作是科学研究的必要条件，正确答案为C。选项A、B、D与文章观点相反，干扰项设计时故意将常见误区作为选项，如认为团队合作只适用于大型项目或认为其不重要。）3.AccordingtothepassageinUnit7,whatisthebiggestchallengeforyoungscientiststoday?A.Findingenoughmoneytoconductexperiments.B.Gettingtherightequipmenttodoresearch.C.Findingotherscientiststoworkwith.D.Stayingmotivatedwhenexperimentsdonotwork.（解析：文章中明确提到“Manyyoungscientistsfindithardtostaymotivatedwhentheirexperimentsfail.”因此正确答案为D。选项A、B、C虽然也是挑战，但文章强调的是心理层面的困难，干扰项通过列举客观困难来迷惑考生。）4.WhatdoesthepassageinUnit7sayaboutthefutureofscience?A.Sciencewillnotchangemuchinthenext50years.B.Sciencewillonlyhelprichcountries,notpoorones.C.Sciencewillcontinuetosolvebigproblemslikeclimatechange.D.Sciencewillbecomelessimportantbecausetechnologyisadvancing.（解析：文章中提到“Sciencewillplayakeyroleinsolvingbigproblemslikeclimatechangeandhealthissuesinthefuture.”因此正确答案为C。选项A、B、D故意设计为悲观或片面的观点，与文章积极展望未来的基调相反。）5.AccordingtothepassageinUnit7,whydosomestudentsthinksciencesubjectsaredifficult?A.Becausescienceteachersarenotgoodatteaching.B.Becausesciencesubjectsrequirealotofmemorization.C.Becausesciencesubjectsarenotasfunassports.D.Becausesciencesubjectsareonlyforsmartstudents.（解析：文章中提到“Somestudentsfindsciencedifficultbecauseitrequiresunderstandingcomplexideas,notjustmemorizingfacts.”因此正确答案为B。选项A、C、D将责任或原因归咎于外部因素或个人偏见，而非学科本身的特点。）6.WhatdoesthepassageinUnit7sayabouttheroleofexperimentsinscience?A.Experimentsareonlyforscientistsinuniversities.B.Experimentsarenotnecessaryifyouhaveagoodidea.C.Experimentshelpscientiststesttheirideasandlearnnewthings.D.Experimentsareboringandtaketoomuchtime.（解析：文章中强调“Experimentsarethemostimportantwayforscientiststotesttheirideasanddiscovernewthings.”因此正确答案为C。选项A、B、D故意设计为贬低实验作用的观点，与科学方法论的基本原则相悖。）7.AccordingtothepassageinUnit7,whatisthebestwaytobecomeagoodscientist?A.Studyscienceeverydaybutdonotdoanyexperiments.B.Onlyreadbooksaboutscienceandnevertalktootherscientists.C.Workwithotherscientistsandlearnfromthem.D.Besmartanddonotaskanyquestions.（解析：文章中提到“Thebestwaytobecomeagoodscientististoworkwithothersandlearnfromtheirexperiences.”因此正确答案为C。选项A、B、D故意设计为孤立或死记硬背的学习方式，与文章强调的合作与交流精神相反。）8.WhatdoesthepassageinUnit7sayaboutthehistoryofscience?A.Sciencehasalwaysbeenthesameasitistoday.B.Sciencehasmadelittleprogressinthelast100years.C.Sciencehaschangedalotovertime,anditcontinuestoevolve.D.Sciencewasonlyimportantinthepast,notnow.（解析：文章中提到“Sciencehaschangedalotovertime,anditcontinuestoevolvewithnewdiscoveries.”因此正确答案为C。选项A、B、D故意设计为静止或否定历史发展的观点，与科学发展的客观事实不符。）9.AccordingtothepassageinUnit7,whydosomestudentsenjoysciencesubjects?A.Becausesciencesubjectsareeasyanddonotrequiremuchthinking.B.Becausesciencesubjectsallowthemtoexploreanddiscovernewthings.C.Becausesciencesubjectsarethesameasmathsubjects.D.Becausesciencesubjectsgivethemlotsofhomework.（解析：文章中提到“Manystudentsenjoysciencebecauseitallowsthemtoexploreanddiscovernewthingsabouttheworld.”因此正确答案为B。选项A、C、D故意设计为肤浅或错误的观点，与文章强调的科学探索精神不符。）10.WhatdoesthepassageinUnit7sayabouttheimportanceofcuriosityinscience?A.Curiosityisnotimportantforscientistsbecausetheyalreadyknoweverything.B.Curiosityisonlyimportantforyoungscientists,notforolderones.C.Curiosityhelpsscientistsaskquestionsandfindnewsolutions.D.Curiosityisawasteoftimebecauseitdoesnotleadtoresults.（解析：文章中强调“Curiosityisthekeytosciencebecauseithelpsscientistsaskquestionsandfindnewsolutions.”因此正确答案为C。选项A、B、D故意设计为否定好奇心作用的观点，与科学发现的基本动力相悖。）二、填空题（每空2分，共20分）1.AccordingtothepassageinUnit7,scientistsoftenworkin______tosolvebigproblems.（参考答案：teams）（解析：文章中提到“Scientistsoftenworkinteamstosolvebigproblemsbecausetheyhavedifferentskillsandknowledge.”填空题考查对文章细节的准确记忆，正确答案为“teams”。）2.ThepassageinUnit7mentionsthatmanystudentsfindsciencesubjectsdifficultbecausetheyrequirealotof______.（参考答案：understanding）（解析：文章中提到“Somestudentsfindsciencedifficultbecauseitrequiresunderstandingcomplexideas,notjustmemorizingfacts.”填空题考查对文章中对比关系的理解，正确答案为“understanding”。）3.AccordingtothepassageinUnit7,thefutureofsciencewillbeimportantforsolvingproblemslike______and______.（参考答案：climatechange,healthissues）（解析：文章中提到“Sciencewillplayakeyroleinsolvingbigproblemslikeclimatechangeandhealthissuesinthefuture.”填空题考查对文章中列举的具体问题的记忆，正确答案为“climatechange”和“healthissues”。）4.ThepassageinUnit7suggeststhatthebestwaytobecomeagoodscientististo______withotherscientistsandlearnfromthem.（参考答案：work）（解析：文章中提到“Thebestwaytobecomeagoodscientististoworkwithothersandlearnfromtheirexperiences.”填空题考查对文章中建议行为的准确记忆，正确答案为“work”。）5.AccordingtothepassageinUnit7,experimentsarethemostimportantwayforscientiststo______theirideasandlearnnewthings.（参考答案：test）（解析：文章中提到“Experimentsarethemostimportantwayforscientiststotesttheirideasanddiscovernewthings.”填空题考查对文章中实验作用的准确记忆，正确答案为“test”。）6.ThepassageinUnit7mentionsthatsciencehaschangedalotovertime,anditcontinuesto______withnewdiscoveries.（参考答案：evolve）（解析：文章中提到“Sciencehaschangedalotovertime,anditcontinuestoevolvewithnewdiscoveries.”填空题考查对文章中科学发展动态的准确记忆，正确答案为“evolve”。）7.AccordingtothepassageinUnit7,curiosityisthe______tosciencebecauseithelpsscientistsaskquestionsandfindnewsolutions.（参考答案：key）（解析：文章中强调“Curiosityisthekeytosciencebecauseithelpsscientistsaskquestionsandfindnewsolutions.”填空题考查对文章中好奇心重要性的核心词汇记忆，正确答案为“key”。）8.ThepassageinUnit7suggeststhatsciencesubjectsarenotasfunas______subjectsforsomestudents.（参考答案：sports）（解析：文章中提到“Somestudentsfindsciencedifficultbecauseitrequiresunderstandingcomplexideas,notjustmemorizingfacts.”并在对比中提到“sciencesubjectsarenotasfunassports.”填空题考查对文章中对比关系的准确记忆，正确答案为“sports”。）9.AccordingtothepassageinUnit7,manystudentschoosesciencesubjectsbecausetheywantto______howthingsworkandmakeadifferenceintheworld.（参考答案：understand）（解析：文章中提到“Manystudentschoosesciencesubjectsbecausetheywanttounderstandhowthingsworkandmakeadifferenceintheworld.”填空题考查对文章中科学学科吸引力的核心动机的准确记忆，正确答案为“understand”。）10.ThepassageinUnit7mentionsthatscienceoftenrequires______becausedifferentpeoplehavedifferentskillsandknowledge.（参考答案：teamwork）（解析：文章中提到“Scienceoftenrequiresteamworkbecausedifferentpeoplehavedifferentskillsandknowledge.”填空题考查对文章中团队合作重要性的核心词汇记忆，正确答案为“teamwork”。）三、判断题（每题2分，共20分）1.AccordingtothepassageinUnit7,sciencesubjectsareeasierthanothersubjects.（参考答案：False）（解析：文章中提到“Somestudentsfindsciencedifficultbecauseitrequiresunderstandingcomplexideas,notjustmemorizingfacts.”因此该说法与文章观点相反，正确答案为False。）2.ThepassageinUnit7suggeststhatexperimentsarenotnecessaryforscientists.（参考答案：False）（解析：文章中强调“Experimentsarethemostimportantwayforscientiststotesttheirideasanddiscovernewthings.”因此该说法与文章观点相反，正确答案为False。）3.AccordingtothepassageinUnit7,sciencewillnotchangemuchinthenext50years.（参考答案：False）（解析：文章中提到“Sciencewillcontinuetoevolvewithnewdiscoveriesinthefuture.”因此该说法与文章观点相反，正确答案为False。）4.ThepassageinUnit7mentionsthatscienceisonlyforsmartstudents.（参考答案：False）（解析：文章中提到“Sciencesubjectsarenotasfunassportsforsomestudents.”这表明并非所有学生都适合或喜欢科学，因此该说法与文章观点相反，正确答案为False。）5.AccordingtothepassageinUnit7,curiosityisnotimportantforscientists.（参考答案：False）（解析：文章中强调“Curiosityisthekeytosciencebecauseithelpsscientistsaskquestionsandfindnewsolutions.”因此该说法与文章观点相反，正确答案为False。）6.ThepassageinUnit7suggeststhatsciencesubjectsareonlyforscientistsinuniversities.（参考答案：False）（解析：文章中提到“Manystudentschoosesciencesubjectsbecausetheywanttounderstandhowthingsworkandmakeadifferenceintheworld.”这表明科学学科对普通人也有意义，因此该说法与文章观点相反，正确答案为False。）7.AccordingtothepassageinUnit7,sciencehasalwaysbeenthesameasitistoday.（参考答案：False）（解析：文章中提到“Sciencehaschangedalotovertime,anditcontinuestoevolvewithnewdiscoveries.”因此该说法与文章观点相反，正确答案为False。）8.ThepassageinUnit7mentionsthatsciencewillbecomelessimportantbecausetechnologyisadvancing.（参考答案：False）（解析：文章中提到“Sciencewillplayakeyroleinsolvingbigproblemsinthefuture.”因此该说法与文章观点相反，正确答案为False。）9.AccordingtothepassageinUnit7,sciencesubjectsareeasyanddonotrequiremuchthinking.（参考答案：False）（解析：文章中提到“Somestudentsfindsciencedifficultbecauseitrequiresunderstandingcomplexideas,notjustmemorizingfacts.”因此该说法与文章观点相反，正确答案为False。）10.ThepassageinUnit7suggeststhatscienceisonlyimportantinthepast,notnow.（参考答案：False）（解析：文章中强调“Sciencewillplayakeyroleinsolvingbigproblemsinthefuture.”因此该说法与文章观点相反，正确答案为False。）四、简答题（每题2分，共16分）1.AccordingtothepassageinUnit7,whydosomestudentsfindsciencesubjectsdifficult?（参考答案：Somestudentsfindsciencesubjectsdifficultbecausetheyrequireunderstandingcomplexideas,notjustmemorizingfacts.Also,sciencesubjectsarenotasfunassportsforsomestudents,whichmakesthemlessinterestedinlearningthemwell.）（解析：文章中提到“Somestudentsfindsciencedifficultbecauseitrequiresunderstandingcomplexideas,notjustmemorizingfacts.”和“Somestudentsfindsciencedifficultbecauseitrequiresunderstandingcomplexideas,notjustmemorizingfacts.”因此答案应包含这两个原因。）2.WhatdoesthepassageinUnit7sayabouttheimportanceofteamworkinscience?（参考答案：ThepassageinUnit7saysthatteamworkisimportantinsciencebecausedifferentscientistshavedifferentskillsandknowledge.Workingtogetherallowsthemtosolveproblemsmoreeffectivelyandmakebiggerdiscoveries.）（解析：文章中提到“Scienceoftenrequiresteamworkbecausedifferentpeoplehavedifferentskillsandknowledge.”因此答案应强调团队合作的优势。）3.AccordingtothepassageinUnit7,whatisthebestwaytobecomeagoodscientist?（参考答案：Thebestwaytobecomeagoodscientististoworkwithotherscientistsandlearnfromtheirexperiences.Thishelpsyougainnewknowledgeandskillsthatyoumightnotlearnonyourown.）（解析：文章中提到“Thebestwaytobecomeagoodscientististoworkwithothersandlearnfromtheirexperiences.”因此答案应强调合作学习的重要性。）4.WhatdoesthepassageinUnit7sayaboutthefutureofscience?（参考答案：ThepassageinUnit7saysthatsciencewillcontinuetoevolvewithnewdiscoveriesinthefuture.Itwillplayakeyroleinsolvingbigproblemslikeclimatechangeandhealthissues.）（解析：文章中提到“Sciencewillcontinuetoevolvewithnewdiscoveriesinthefuture.”和“Sciencewillplayakeyroleinsolvingbigproblemslikeclimatechangeandhealthissuesinthefuture.”因此答案应包含这两个方面。）5.AccordingtothepassageinUnit7,whydosomestudentschoosesciencesubjects?（参考答案：Somestudentschoosesciencesubjectsbecausetheywanttounderstandhowthingsworkandmakeadifferenceintheworld.Theyarecuriousabouttheworldandwanttoexploreanddiscovernewthings.）（解析：文章中提到“Manystudentschoosesciencesubjectsbecausetheywanttounderstandhowthingsworkandmakeadifferenceintheworld.”因此答案应强调对世界的好奇心和探索精神。）6.WhatdoesthepassageinUnit7sayabouttheroleofexperimentsinscience?（参考答案：ThepassageinUnit7saysthatexperimentsarethemostimportantwayforscientiststotesttheirideasanddiscovernewthings.Theyhelpscientistsunderstandhowthingsworkandmakesuretheirtheoriesarecorrect.）（解析：文章中提到“Experimentsarethemostimportantwayforscientiststotesttheirideasanddiscovernewthings.”因此答案应强调实验在科学发现中的核心作用。）7.AccordingtothepassageinUnit7,whatisthebiggestchallengeforyoungscientiststoday?（参考答案：Thebiggestchallengeforyoungscientiststodayisstayingmotivatedwhentheirexperimentsdonotwork.Manyyoungscientistsfindithardtostaymotivatedwhentheirexperimentsfail,whichcanmakeitdifficultforthemtocontinuetheirresearch.）（解析：文章中提到“Manyyoungscientistsfindithardtostaymotivatedwhentheirexperimentsfail.”因此答案应强调实验失败时的心理挑战。）8.WhatdoesthepassageinUnit7sayabouttheimportanceofcuriosityinscience?（参考答案：ThepassageinUnit7saysthatcuriosityisthekeytosciencebecauseithelpsscientistsaskquestionsandfindnewsolutions.Curiousscientistsarealwayslookingforwaystoimprovetheworldandsolveproblems.）（解析：文章中强调“Curiosityisthekeytosciencebecauseithelpsscientistsaskquestionsandfindnewsolutions.”因此答案应强调好奇心在科学发现中的驱动力。）五、应用题（每题4分，共24分）1.Readthefollowingpassageandanswerthequestion:“Manystudentsfindsciencesubjectsdifficultbecausetheyrequireunderstandingcomplexideas,notjustmemorizingfacts.Scienceoftenrequiresteamworkbecausedifferentpeoplehavedifferentskillsandknowledge.Experimentsarethemostimportantwayforscientiststotesttheirideasanddiscovernewthings.Curiosityisthekeytosciencebecauseithelpsscientistsaskquestionsandfindnewsolutions.”Whatisthemainideaofthispassage?（参考答案：Themainideaofthispassageisthatsciencesubjectsrequiredeepunderstanding,teamwork,experiments,andcuriositytobesuccessful.Theseelementsareessentialforscientiststomakediscoveriesandsolveproblems.）（解析：文章中提到了科学学科的四个关键要素：理解复杂概念、团队合作、实验和好奇心。因此答案应概括这些要素的重要性。）2.Readthefollowingpassageandanswerthequestion:“Sciencewillcontinuetoevolvewithnewdiscoveriesinthefuture.Itwillplayakeyroleinsolvingbigproblemslikeclimatechangeandhealthissues.Manystudentschoosesciencesubjectsbecausetheywanttounderstandhowthingsworkandmakeadifferenceintheworld.However,manyyoungscientistsfindithardtostaymotivatedwhentheirexperimentsfail.”Whatdoesthepassagesuggestaboutthefutureofscience?（参考答案：Thepassagesuggeststhatsciencewillcontinuetoevolveandplayakeyroleinsolvingbigproblemsinthefuture.Itwillhelpusunderstandtheworldbetterandmakeapositiveimpactonsociety.However,scientists,especiallyyoungones,needtostaymotivatedevenwhenfacingchallenges.）（解析：文章中提到了科学的未来发展趋势和科学家面临的挑战。因此答案应包含这两个方面。）3.Readthefollowingpassageandanswerthequestion:“Scienceoftenrequiresteamworkbecausedifferentpeoplehavedifferentskillsandknowledge.Workingtogetherallowsthemtosolveproblemsmoreeffectivelyandmakebiggerdiscoveries.However,somestudentsfindsciencesubjectsdifficultbecausetheyrequireunderstandingcomplexideas,notjustmemorizingfacts.Curiosityisthekeytosciencebecauseithelpsscientistsaskquestionsandfindnewsolutions.”Whyisteamworkimportantinscience?（参考答案：Teamworkisimportantinsciencebecauseitallowsscientiststocombinetheirdifferentskillsandknowledgetosolveproblemsmoreeffectively.Whenscientistsworktogether,theycanmakebiggerdiscoveriesandfindbettersolutionstocomplexissues.Thisisespeciallyimportantinfieldslikesciencewhereproblemsareoftentoobigforonepersontosolvealone.）（解析：文章中强调了团队合作的优势。因此答案应解释团队合作如何帮助科学发现。）4.Readthefollowingpassageandanswerthequestion:“Manystudentschoosesciencesubjectsbecausetheywanttounderstandhowthingsworkandmakeadifferenceintheworld.However,manyyoungscientistsfindithardtostaymotivatedwhentheirexperimentsfail.Scienceoftenrequiresteamworkbecausedifferentpeoplehavedifferentskillsandknowledge.Experimentsarethemostimportantwayforscientiststotesttheirideasanddiscovernewthings.”Whatisthebiggestchallengeforyoungscientiststoday?（参考答案：Thebiggestchallengeforyoungscientiststodayisstayingmotivatedwhentheirexperimentsfail.Manyyoungscientistsfindithardtostaymotivatedwhentheirexperimentsdonotworkasexpected,whichcanmakeitdifficultforthemtocontinuetheirresearch.Thisisespeciallychallengingbecausescienceoftenrequiresalotoftrialanderrorbeforeasuccessfulexperimentisachieved.）（解析：文章中提到了年轻科学家面临的挑战。因此答案应解释实验失败时的心理压力。）5.Readthefollowingpassageandanswerthequestion:“Sciencewillcontinuetoevolvewithnewdiscoveriesinthefuture.Itwillplayakeyroleinsolvingbigproblemslikeclimatechangeandhealthissues.Manystudentschoosesciencesubjectsbecausetheywanttounderstandhowthingsworkandmakeadifferenceintheworld.However,manyyoungscientistsfindithardtostaymotivatedwhentheirexperimentsfail.Curiosityisthekeytosciencebecauseithelpsscientistsaskquestionsandfindnewsolutions.”Howcanstudentspreparetobecomegoodscientists?（参考答案：Studentscanpreparetobecomegoodscientistsbydevelopingastrongunderstandingofcomplexideas,learningtoworkwithothersinteams,practicingexperimentstoimprovetheirskills,andstayingcuriousabouttheworld.Theyshouldalsolearntostaymotivatedevenwhenfacingchallenges,suchasfailedexperiments.Bydoingthesethings,studentscanbuildthefoundationtheyneedtosucceedinscience.）（解析：文章中提到了科学学科的关键要素。因此答案应概括学生如何准备成为科学家。）6.Readthefollowingpassageandanswerthequestion:“Scienceoftenrequiresteamworkbecausedifferentpeoplehavedifferentskillsandknowledge.Workingtogetherallowsthemtosolveproblemsmoreeffectivelyandmakebiggerdiscoveries.However,somestudentsfindsciencesubjectsdifficultbecausetheyrequireunderstandingcomplexideas,notjustmemorizingfacts.Curiosityisthekeytosciencebecauseithelpsscientistsaskquestionsandfindnewsolutions.”Whydosomestudentsfindsciencesubjectsdifficult?（参考答案：Somestudentsfindsciencesubjectsdifficultbecausetheyrequireunderstandingcomplexideas,notjustmemorizingfacts.Sciencesubjectsalsorequirealotofcriticalthinkingandproblem-solvingskills,whichcanbechallengingforsomestudents.Additionally,sciencesubjectsarenotasfunassportsforsomestudents,whichmakesthemlessinterestedinlearningthemwell.Thesefactorscanmakesciencesubjectsdifficultforsomestudentstomaster.）（解析：文章中提到了科学学科的特点。因此答案应解释为什么一些学生觉得科学学科难。）【标准答案及解析】一、单项选择题1.B2.C3.D4.C5.B6.C7.C8.C9.B10.C解析：每题解析已随题目给出，确保答案与文章内容一致，干扰项设计合理。二、填空题1.teams2.understanding3.climatechange,healthissues4.work5.test6.evolve7.key8.sports9.understand10.teamwork解析：每题填空均考查对文章中关键词的准确记忆，答案与文章内容完全一致。三、判断题1.False2.False3.False4.False5.False6.False7.False8.False9.False10.False解析：每题判断均与文章观点相反，考查对文章细节的准确理解。四、简答题1.参考答案：Somestudentsfindsciencesubjectsdifficultbecausetheyrequireunderstandingcomplexideas,notjustmemorizingfacts.Also,sciencesubjectsarenotasfunassportsforsomestudents,whichmakesthemlessinterestedinlearningthemwell.解析：答案包含两个原因，与文章观点一致。2.参考答案：ThepassageinUnit7saysthatteamworkisimportantinsciencebecausedifferentscientistshavedifferentskillsandknowledge.Workingtogetherallowsthemtosolveproblemsmoreeffectivelyandmakebiggerdiscoveries.解析：答案强调团队合作的优势，与文章观点一致。3.参考答案：Thebestwaytobecomeagoodscientististoworkwithotherscientistsandlearnfromtheirexperiences.Thishelpsyougainnewknowledgeandskillsthatyoumightnotlearnonyourown.解析：答案强调合作学习的重要性，与文章观点一致。4.参考答案：ThepassageinUnit7saysthatsciencewillcontinuetoevolvewithnewdiscoveriesinthefuture.Itwillplayakeyroleinsolvingbigproblemslikeclimatechangeandhealthissues.解析：答案包含两个方面，与文章观点一致。5.参考答案：Somestudentschoosesciencesubjectsbecausetheywanttounderstandhowthingsworkandmakeadifferenceintheworld.Theyarecuriousabouttheworldandwanttoexploreanddiscovernewthings.解析：答案强调对世界的好奇心和探索精神，与文章观点一致。6.参考答案：ThepassageinUnit7saysthatexperimentsarethemostimportantwayforscientiststotesttheirideasanddiscovernewthings.Theyhelpscientistsunderstandhowthingsworkandmakesuretheirtheoriesarecorrect.解析：答案强调实验在科学发现中的核心作用，与文章观点一致。7.参考答案：Thebiggestchallengeforyoungscientiststodayisstayingmotivatedwhentheirexperimentsdonotwork.Manyyoungscientistsfindithardtostaymotivatedwhentheirexperimentsfail,whichcanmakeitdifficultforthemtocontinuetheirresearch.解析：答案解释实验失败时的心理挑战，与文章观点一致。8.参考答案：ThepassageinUnit7saysthatcuriosityisthekeytosciencebecauseithelpsscientistsaskquestionsandfindnewsolutions.Curiousscientistsarealwayslookingforwaystoimpr