2026年天津市专升本英语听力理解专项训练

2026年天津市专升本英语听力理解专项训练1.Inthelisteningpassage,thespeakermentionsthat"manystudentsfinditdifficulttoadjusttothenewenvironment."Whatdoesthisstatementimplyaboutthechallengesfacedbystudentsinthecontextofthe2026TianjinCollegeEntranceExamination?A.Theexamrequiresextensivememorizationofvocabulary.B.Thetransitiontohighereducationpresentssignificantpsychologicalchallenges.C.Thecurriculumisoverlycomplexformoststudents.D.Theuniversity'sfacilitiesareinadequateforstudentuse.解析：本题考查听力中细节信息的提取能力。根据题干中的关键词"adjusttothenewenvironment"，在听力材料中定位到相关段落，发现演讲者明确指出"thepsychologicalpressureofadaptingtoanewcampuscultureisunderestimatedbymany."选项B准确反映了这一含义，而其他选项均与原文内容不符。此类题目要求考生在听录音时注意关键词，并理解其上下文语境。2.Thepassagedescribesastudywhere"studentswholistenedtoclassicalmusicbeforeexamsperformedbetterthanthosewhodidnot."Whatdoesthissuggestabouttheroleofbackgroundmusicinacademicperformance?A.Musicdistractsstudentsfromstudyingeffectively.B.Classicalmusichasnoimpactoncognitivetasks.C.Musiccanenhanceconcentrationandmemoryretention.D.Thetypeofmusicdoesnotmatteraslongasitisloud.解析：题干中的"listenedtoclassicalmusicbeforeexams"是关键线索，听力材料中提到"thealphabrainwavesofmusiclistenersshowedhighersynchronizationwithlearningtasks."选项C的表述与这一科学发现一致，而其他选项均存在明显偏差。此类题目需要考生具备一定的学术背景知识，能够将听力内容与常识结合判断。3.Whentheinterviewerasks,"Howdoyourecommendstudentsprepareforthelisteningsection?"theprofessorresponds,"It'sessentialtopracticewithauthenticmaterials."Whatistheprimaryadvicegiven?A.Studentsshouldfocusongrammarrulesinsteadofpractice.B.Authenticmaterialsareunnecessaryforexampreparation.C.Regularpracticewithreallisteningexercisesiscrucial.D.Listeningtomusicismoreeffectivethanstudyingtexts.解析：题干中的"practicewithauthenticmaterials"是听力中的直接引用，教授明确指出"authenticmaterialsexposestudentstonaturalspeechpatternsandunpredictablevocabulary."选项C准确概括了这一建议的核心，其他选项均与原文建议相悖。此类题目要求考生注意听力材料中的直接引语，并理解其意义。4.Thepassagementionsasurveywhere"80%ofstudentsreportedthatgroupstudysessionsimprovedtheirexamscores."Whatdoesthisstatisticimplyaboutcollaborativelearning?A.Groupstudyisonlyeffectiveforsciencesubjects.B.Individualstudyisalwaysbetterthangrouplearning.C.Collaborationcansignificantlyenhanceacademicperformance.D.Thesurveyresultsarenotreliableduetosmallsamplesize.解析：题干中的"80%ofstudentsreportedthatgroupstudysessionsimprovedtheirexamscores"是听力中的具体数据，材料中进一步解释"theexchangeofdiverseperspectivesfostersdeeperunderstanding."选项C准确反映了这一结论，其他选项均存在逻辑错误。此类题目需要考生能够从听力数据中提取有效信息并做出合理推断。5.Thespeakerdiscussesastudentwho"failedthefirstmidtermbutpassedthefinalexamafterseekingtutoring."Whatdoesthisexampleillustrateaboutacademicsupportsystems?A.Tutoringisonlyusefulforstudentswhoalreadyfail.B.Academicsupportshouldbesoughtimmediatelyafterfailing.C.Personalizedassistancecanhelpstudentsovercomedifficulties.D.Midtermexamsaremoreimportantthanfinalexams.解析：题干中的"failedthefirstmidtermbutpassedthefinalafterseekingtutoring"是听力中的具体案例，材料中分析指出"thepersonalizedfeedbackhelpedthestudentidentifyandcorrectspecificweaknesses."选项C准确总结了这一案例的启示，其他选项均存在偏差。此类题目要求考生能够从听力案例中提炼出关键信息并理解其意义。6.Thepassagementionsauniversityinitiativewhere"freetutoringsessionsareofferedeveryTuesdayandThursday."Whatdoesthisindicateabouttheinstitution'sapproachtostudentsupport?A.Theuniversityprioritizesextracurricularactivitiesoveracademics.B.Academicsupportisonlyavailablefortop-performingstudents.C.Theinstitutionprovidesaccessibleresourcesforstudentimprovement.D.Tutoringsessionsaremandatoryforallstudents.解析：题干中的"freetutoringsessionsareofferedeveryTuesdayandThursday"是听力中的具体信息，材料中强调"thegoalistoensurenostudentfeelsleftbehindacademically."选项C准确反映了这一政策的目的，其他选项均与原文不符。此类题目需要考生能够从听力信息中理解机构的政策意图。7.Thepassagedescribesastudentwho"usedtostrugglewithpronunciationbutimprovedafterpracticingwithlanguagepartners."Whatdoesthissuggestaboutlanguagelearningstrategies?A.Self-studyisthemosteffectivemethodforlanguageacquisition.B.Languagepartnershavenoroleinimprovingpronunciation.C.Collaborativelearningcanaddressspecificlanguagechallenges.D.Pronunciationdifficultiescannotbeovercomewithoutprofessionalhelp.解析：题干中的"usedtostrugglewithpronunciationbutimprovedafterpracticingwithlanguagepartners"是听力中的具体案例，材料中分析指出"peerfeedbackoftenhighlightsissuesthatself-studymightmiss."选项C准确总结了这一案例的启示，其他选项均存在偏差。此类题目要求考生能够从听力案例中提炼出关键信息并理解其意义。8.Thepassagementionsastudywhere"studentswhotookbreaksduringstudysessionsretainedmoreinformationthanthosewhostudiedcontinuously."Whatdoesthissuggestaboutlearningtechniques?A.Continuousstudyismoreefficientformemorization.B.Breakshavenoimpactoncognitiveperformance.C.Periodicbreakscanenhanceinformationretention.D.Studysessionsshouldbeaslongaspossible.解析：题干中的"studentswhotookbreaksduringstudysessionsretainedmoreinformation"是听力中的具体发现，材料中解释"thebrain'sconsolidationprocessbenefitsfromintermittentrestperiods."选项C准确概括了这一科学发现，其他选项均与原文相反。此类题目需要考生能够从听力内容中理解学术研究的结论。9.Thepassagedescribesastudentwho"failedtoprepareforthelisteningsectionbecauseshethoughtitwouldbeeasy."Whatdoesthisexampleillustrateaboutexampreparation?A.Somestudentsarenaturallygoodatlisteningcomprehension.B.Confidenceinexamscanleadtopoorperformance.C.Listeningskillsdonotrequirespecificpreparation.D.Allstudentsshouldavoidstudyingforlisteningsections.解析：题干中的"failedtoprepareforthelisteningsectionbecauseshethoughtitwouldbeeasy"是听力中的具体案例，材料中分析指出"underestimatingthedifficultyoftenleadstounderperformance."选项B准确总结了这一案例的教训，其他选项均与原文不符。此类题目要求考生能够从听力案例中提炼出关键信息并理解其意义。10.Thepassagementionsaprofessorwho"advisesstudentsto'listenmultipletimestothesamerecording'forbetterunderstanding."Whatistheprimaryrecommendationgiven?A.Studentsshouldonlylistentorecordingsoncetosavetime.B.Repeatedexposuretothesamematerialisunnecessary.C.Multiplelistenscanhelpgraspcomplexinformationmoreeffectively.D.Listeningskillsimproveautomaticallywithexposuretodiversecontent.解析：题干中的"listenmultipletimestothesamerecording"是听力中的直接建议，教授解释说"repetitionallowsthebraintocatchnuancesthataremissedonthefirstpass."选项C准确概括了这一建议的核心，其他选项均与原文相反。此类题目要求考生能够从听力内容中理解专家的建议并理解其意义。1.Accordingtothepassage,thekeytoimprovinglisteningcomprehensionisto_______unfamiliarvocabularyincontext.解析：听力材料中提到"thekeytoimprovinglisteningcomprehensionistoencounterunfamiliarvocabularyincontext."填空处应为"encounter"。2.Thesurveyfoundthat_______ofstudentsreportedpositiveoutcomesfromgroupstudysessions.解析：听力材料中提到"80%ofstudentsreportedthatgroupstudysessionsimprovedtheirexamscores."填空处应为"80%"。3.Theprofessoremphasizedthat_______isessentialforunderstandingthenuancesofspokenEnglish.解析：听力材料中提到"listeningtonativespeakersandanalyzingtheirintonationpatternsisessentialforunderstandingthenuancesofspokenEnglish."填空处应为"listeningtonativespeakersandanalyzingtheirintonationpatterns"。4.Thepassagesuggeststhat_______cansignificantlyenhanceacademicperformance.解析：听力材料中提到"collaborationcansignificantlyenhanceacademicperformance."填空处应为"collaboration"。5.Thestudyonmusicandexamsconcludedthat_______hadapositiveimpactoncognitivetasks.解析：听力材料中提到"studentswholistenedtoclassicalmusicbeforeexamsperformedbetterthanthosewhodidnot."填空处应为"classicalmusic"。6.Theuniversity'sinitiativetoofferfreetutoringsessionsindicatesthat_______isapriorityfortheinstitution.解析：听力材料中提到"thegoalistoensurenostudentfeelsleftbehindacademically."填空处应为"academicsupport"。7.Thepassagementionsastudentwho"failedthefirstmidtermbutpassedthefinalafterseekingtutoring."Thisexampleillustratestheimportanceof_______.解析：听力材料中分析指出"personalizedassistancecanhelpstudentsovercomedifficulties."填空处应为"personalizedassistance"。8.Thespeakerdiscussedastudentwho"usedtostrugglewithpronunciationbutimprovedafterpracticingwithlanguagepartners."Thissuggeststhat_______canaddressspecificlanguagechallenges.解析：听力材料中分析指出"peerfeedbackoftenhighlightsissuesthatself-studymightmiss."填空处应为"collaborativelearning"。9.Thepassagementionsastudywhere"studentswhotookbreaksduringstudysessionsretainedmoreinformationthanthosewhostudiedcontinuously."Thisfindingsupportstheideathat_______.解析：听力材料中解释说"thebrain'sconsolidationprocessbenefitsfromintermittentrestperiods."填空处应为"periodicbreakscanenhanceinformationretention"。10.Thepassagedescribesastudentwho"failedtoprepareforthelisteningsectionbecauseshethoughtitwouldbeeasy."Thisexampleshowsthat_______canleadtopoorperformance.解析：听力材料中分析指出"underestimatingthedifficultyoftenleadstounderperformance."填空处应为"underestimatingthedifficulty"。1.Thepassagestatesthat"listeningcomprehensioncanbeimprovedbywatchingmoviesinthetargetlanguage."Isthisstatementtrueorfalse?解析：听力材料中未提及观看电影与听力理解的关系，因此该陈述无法判断真伪。2.Thesurveymentionedinthepassageindicatesthat90%ofstudentsfindgroupstudysessionshelpful.Isthisstatementtrueorfalse?解析：听力材料中明确提到"80%ofstudentsreportedthatgroupstudysessionsimprovedtheirexamscores."因此该陈述为假。3.Theprofessorsuggeststhatlisteningtomusicbeforeexamsisineffectiveforimprovingperformance.Isthisstatementtrueorfalse?解析：听力材料中提到"studentswholistenedtoclassicalmusicbeforeexamsperformedbetterthanthosewhodidnot."因此该陈述为假。4.Thepassagementionsthat"tutoringisonlyusefulforstudentswhoalreadyfailexams."Isthisstatementtrueorfalse?解析：听力材料中分析指出"personalizedassistancecanhelpstudentsovercomedifficulties."因此该陈述为假。5.Theuniversityoffersfreetutoringsessionseverydaytosupportstudentlearning.Isthisstatementtrueorfalse?解析：听力材料中提到"freetutoringsessionsareofferedeveryTuesdayandThursday."因此该陈述为假。6.Thepassagestatesthat"languagepartnershavenoroleinimprovingpronunciation."Isthisstatementtrueorfalse?解析：听力材料中提到"usedtostrugglewithpronunciationbutimprovedafterpracticingwithlanguagepartners."因此该陈述为假。7.Thestudyonbreaksandlearningsuggeststhatcontinuousstudyingforlongperiodsisalwaysmoreeffective.Isthisstatementtrueorfalse?解析：听力材料中提到"studentswhotookbreaksduringstudysessionsretainedmoreinformationthanthosewhostudiedcontinuously."因此该陈述为假。8.Thepassagementionsthat"listeningskillsdonotrequirespecificpreparation."Isthisstatementtrueorfalse?解析：听力材料中提到"it'sessentialtopracticewithauthenticmaterials."因此该陈述为假。9.Theprofessoradvisesstudentsto"onlylistentorecordingsoncetosavetime."Isthisstatementtrueorfalse?解析：听力材料中提到"listenmultipletimestothesamerecording"forbetterunderstanding.因此该陈述为假。10.Thepassagestatesthat"underestimatingthedifficultyofexamshasnoimpactonperformance."Isthisstatementtrueorfalse?解析：听力材料中分析指出"underestimatingthedifficultyoftenleadstounderperformance."因此该陈述为假。1.Accordingtothepassage,whatarethethreemainstrategiesforimprovinglisteningcomprehension?参考答案：（1）Practicewithauthenticmaterialstoexposestudentstonaturalspeechpatterns.（2）Engageincollaborativelearningthroughgroupstudysessionstoexchangediverseperspectives.（3）Listenmultipletimestothesamerecordingtocatchnuancesthataremissedonthefirstpass.解析：听力材料中提到了多种策略，其中最核心的三种是：使用真实材料进行练习、通过小组学习交流不同观点、多次听同一录音以捕捉细节。考生需要准确提炼并总结这些策略。2.Thepassagedescribesastudentwhofailedthefirstmidtermbutpassedthefinalafterseekingtutoring.Whatdoesthisexampleillustrateaboutacademicsupportsystems?参考答案：Thisexampleillustratesthatpersonalizedassistancecanhelpstudentsovercomedifficulties.Thestudent'simprovementafterseekingtutoringshowsthattargetedsupportcanaddressspecificweaknessesandleadtoacademicsuccess.解析：考生需要从案例中提炼出关键信息，并理解其对于学术支持系统的意义。3.Thepassagementionsastudywhere"studentswhotookbreaksduringstudysessionsretainedmoreinformationthanthosewhostudiedcontinuously."Whatdoesthissuggestaboutlearningtechniques?参考答案：Thissuggeststhatperiodicbreakscanenhanceinformationretention.Thebrain'sconsolidationprocessbenefitsfromintermittentrestperiods,allowingforbetterabsorptionandrecallofinformation.解析：考生需要从听力内容中理解学术研究的结论，并解释其对学习技巧的启示。4.Thepassagedescribesastudentwho"usedtostrugglewithpronunciationbutimprovedafterpracticingwithlanguagepartners."Whatdoesthissuggestaboutlanguagelearningstrategies?参考答案：Thissuggeststhatcollaborativelearningcanaddressspecificlanguagechallenges.Peerfeedbackoftenhighlightsissuesthatself-studymightmiss,makinglanguagepartnersvaluableforimprovingpronunciationandotherlanguageskills.解析：考生需要从案例中提炼出关键信息，并理解其对于语言学习策略的意义。5.Thepassagementionsauniversityinitiativewhere"freetutoringsessionsareofferedeveryTuesdayandThursday."Whatdoesthisindicateabouttheinstitution'sapproachtostudentsupport?参考答案：Thisindicatesthattheinstitutionprovidesaccessibleresourcesforstudentimprovement.Theregularavailabilityoffreetutoringsessionsshowsacommitmenttoensuringnostudentfeelsleftbehindacademically.解析：考生需要从听力信息中理解机构的政策意图，并总结其对学生支持的意义。6.Thepassagestatesthat"listeningcomprehensioncanbeimprovedbywatchingmoviesinthetargetlanguage."Isthisstatementtrueorfalse?Why?参考答案：Thisstatementisnotexplicitlymentionedinthepassage.Whilewatchingmoviescanbeausefulsupplementaryactivity,thepassagedoesnotconfirmitseffectivenessforimprovinglisteningcomprehension.解析：考生需要判断听力材料中是否提及该观点，并解释原因。7.Thepassagementionsasurveywhere"80%ofstudentsreportedthatgroupstudysessionsimprovedtheirexamscores."Whatdoesthisstatisticimplyaboutcollaborativelearning?参考答案：Thisstatisticimpliesthatcollaborationcansignificantlyenhanceacademicperformance.Thehighpercentageofstudentsreportingpositiveoutcomessuggeststhatgroupstudysessionsareaneffectivelearningstrategy.解析：考生需要从听力数据中提取有效信息并做出合理推断。8.Thepassagedescribesastudentwho"failedtoprepareforthelisteningsectionbecauseshethoughtitwouldbeeasy."Whatdoesthisexampleillustrateaboutexampreparation?参考答案：Thisexampleillustratesthatconfidenceinexamscanleadtopoorperformance.Underestimatingthedifficultyoftenleadstounderperformance,highlightingtheimportanceofproperpreparationandrealisticexpectations.解析：考生需要从案例中提炼出关键信息，并理解其对于考试准备的意义。1.Youarepreparingforthe2026TianjinCollegeEntranceExaminationandwanttoimproveyourlisteningcomprehension.Basedonthepassage,whatspecificstepsshouldyoutake?参考答案：Toimprovelisteningcomprehension,Ishould:（1）Practicewithauthenticmaterialstoexposemyselftonaturalspeechpatterns.（2）Engageincollaborativelearningthroughgroupstudysessionstoexchangediverseperspectives.（3）Listenmultipletimestothesamerecordingtocatchnuancesthataremissedonthefirstpass.（4）Seekfeedbackfromlanguagepartnerstoaddressspecificlanguagechallenges.解析：考生需要结合听力材料中的建议，提出具体的改进措施。2.Thepassagementionsauniversityinitiativewhere"freetutoringsessionsareofferedeveryTuesdayandThursday."Ifyouwereastudent,howwouldyouutilizethisresourcetoimproveyouracademicperformance?参考答案：Iwouldutilizethefreetutoringsessionsby:（1）Attendingsessionsregularlytoreceivepersonalizedassistance.（2）Identifyingmyspecificweaknessesandaskingfortargetedhelp.（3）Collaboratingwithtutorstodevelopastudyplan.（4）Seekingfeedbackandpracticingproblemstoimprove.解析：考生需要结合听力材料中的信息，提出具体的利用策略。3.Thepassagedescribesastudentwho"usedtostrugglewithpronunciationbutimprovedafterpracticingwithlanguagepartners."Ifyouwerethisstudent,whatactionswouldyoutaketoimproveyourpronunciation?参考答案：Iwould:（1）Findalanguagepartnertopracticewithregularly.（2）Recordmyselfspeakingandcomparewithnativespeakers.（3）Askforfeedbackonmypronunciationandworkonspecificsounds.（4）Useappsortoolstopracticeintonationpatterns.解析：考生需要结合案例，提出具体的改进措施。4.Thepassagementionsastudywhere"studentswhotookbreaksduringstudysessionsretainedmoreinformationthanthosewhostudiedcontinuously."Ifyouwerepreparingforanexam,howwouldyouincorporatebreaksintoyourstudyroutine?参考答案：Iwould:（1）Planstudysessionswithshortbreaksevery25-30minutes.（2）UsetechniqueslikethePomodoroTechniquetomaintainfocus.（3）Engageinphysicalactivityduringbreakstorefreshmymind.（4）Reviewnotesduringbreakstoreinforcelearning.解析：考生需要结合听力内容，提出具体的改进措施。5.Thepassagestatesthat"listeningcomprehensioncanbeimprovedbywatchingmoviesinthetargetlanguage."Ifyouweretousethismethod,whatspecificstepswouldyoutake?参考答案：Iwould:（1）Choosemovieswithsubtitlesinthetargetlanguage.（2）Watchashortsegmentmultipletimestocatchdetails.（3）Takenotesonnewvocabularyandphrases.（4）Discussthemoviewithnativespeakerstopracticecomprehension.解析：考生需要结合听力材料中的建议，提出具体的改进措施。6.Thepassagementionsasurveywhere"80%ofstudentsreportedthatgroupstudysessionsimprovedtheirexamscores."Ifyouweretojoinagroupstudysession,whatwouldyoubringtothesession?参考答案：Iwouldbring:（1）QuestionsaboutareasIfinddifficult.（2）Notestoshareanddiscusswiththegroup.（3）Studymaterialstocontributetothesession.（4）Apositiveattitudetocollaborateeffectively.解析：考生需要结合听力数据，提出具体的参与策略。7.Thepassagedescribesastudentwho"failedthefirstmidtermbutpassedthefinalafterseekingtutoring."Ifyouwerethisstudent,whatactionswouldyoutaketoimproveyouracademicperformance?参考答案：Iwould:（1）Attendtutoringsessionsregularlytoreceivepersonalizedassistance.（2）Identifymyspecificweaknessesandaskfortargetedhelp.（3）Practiceproblemsandseekfeedbacktoimprove.（4）Developastudyplanwiththetutor'sguidance.解析：考生需要结合案例，提出具体的改进措施。8.Thepassagementionsaprofessorwho"advisesstudentsto'listenmultipletimestothesamerecording'forbetterunderstanding."Ifyouweretofollowthisadvice,whatspecificstepswouldyoutake?参考答案：Iwould:（1）Listentoarecordingoncetogetthegeneralidea.（2）Listenagaintocatchspecificdetailsandvocabulary.（3）Takenotesonnewwordsandphrases.（4）Repeattheprocessmultipletimestoimproveretention.解析：考生需要结合听力材料中的建议，提出具体的改进措施。【标准答案及解析】一、单项选择题1.B2.C3.C4.C5.C6.C7.C8.C9.B10.C二、填空题1.encounter2.80%3.listeningtonativespeakersandanalyzingtheirintonationpatterns4.collaboration5.classicalmusic6.academicsupport7.personalizedassistance8.collaborativelearning9.periodicbreakscanenhanceinformationretention10.underestimatingthedifficulty三、判断题1.无法判断2.假3.假4.假5.假6.假7.假8.假9.假10.假四、简答题1.（1）Practicewithauthenticmaterialstoexposestudentstonaturalspeechpatterns.（2）Engageincollaborativelearningthroughgroupstudysessionstoexchangediverseperspectives.（3）Listenmultipletimestothesamerecordingtocatchnuancesthataremissedonthefirstpass.解析：听力材料中提到了多种策略，其中最核心的三种是：使用真实材料进行练习、通过小组学习交流不同观点、多次听同一录音以捕捉细节。考生需要准确提炼并总结这些策略。2.Thisexampleillustratesthatpersonalizedassistancecanhelpstudentsovercomedifficulties.Thestudent'simprovementafterseekingtutoringshowsthattargetedsupportcanaddressspecificweaknessesandleadtoacademicsuccess.解析：考生需要从案例中提炼出关键信息，并理解其对于学术支持系统的意义。3.Thissuggeststhatperiodicbreakscanenhanceinformationretention.Thebrain'sconsolidationprocessbenefitsfromintermittentrestperiods,allowingforbetterabsorptionandrecallofinformation.解析：考生需要从听力内容中理解学术研究的结论，并解释其对学习技巧的启示。4.Thissuggeststhatcollaborativelearningcanaddressspecificlanguagechallenges.Peerfeedbackoftenhighlightsissuesthatself-studymightmiss,makinglanguagepartnersvaluableforimprovingpronunciationandotherlanguageskills.解析：考生需要从案例中提炼出关键信息，并理解其对于语言学习策略的意义。5.Thisindicatesthattheinstitutionprovidesaccessibleresourcesforstudentimprovement.Theregularavailabilityoffreetutoringsessionsshowsacommitmenttoensuringnostudentfeelsleftbehindacademically.解析：考生需要从听力信息中理解机构的政策意图，并总结其对学生支持的意义。6.Thisstatementisnotexplicitlymentionedinthepassage.Whilewatchingmoviescanbeausefulsupplementaryactivity,thepassagedoesnotconfirmitseffectivenessforimprovinglisteningcomprehension.解析：考生需要判断听力材料中是否提及该观点，并解释原因。7.Thisstatisticimpliesthatcollaborationcansignificantlyenhanceacademicperformance.Thehighpercentageofstudentsreportingpositiveoutcomessuggeststhatgroupstudysessionsareaneffectivelearningstrategy.解析：考生需要从听力数据中提取有效信息并做出合理推断。8.Thisexampleillustratesthatconfidenceinexamscanleadtopoorperformance.Underestimatingthedifficultyoftenleadstounderperformance,highlightingtheimportanceofproperpreparationandrealistice