12月24日大学英语四级真题试题(B卷)(3).docx

12月24日大学英语四级真题试题(B卷)(3)

2005年12月24日大学英语四级真题试题(B卷)(3)PassageThreeQuestions17to20arebasedonthepassageyouhavejustheard.【您现在阅读的文章来自“中国人才指南网”，请记住我们的永久域名：www.unjs.com】17A)Theywantedtofollowhisexample.B)Theyfullysupportedhisundertaking.C)Theywereafraidhewasn’tfullyprepared.D)Theywerepuzzledbyhisdecision.18A)Itismoreexcitingthanspacetravel.B)Itismuchsaferthanspacetravel.C)Itismuchcheaperthanspacetravel.D)Itislesstime-consumingthanspacetravel.19A)Theybothattractscientists’attentionB)Theyareboththought-provoking.C)TheycanbothbequitechallengingD)Theymaybothleadtosurprisingfindings.20A)Toexplorethephilosophicalissuesofspacetravel.B)Toshowhowsimplethemechanicalaidsforpingcanbe.C)Toexplainwhyhetookupunderwaterexploration.D)Toprovideanexcuseforhischangeablecharacter.PartIIReadingComprehension(35minutes)PassageOneQuestions21to25arebasedonthefollowingpassage.“Humansshouldnottrytoavoidstressanymorethantheywouldshunfood,loveorexercise.”SaidDr.HansSelye,thefirstphysiciantodocumenttheeffectsofstressonthebody.Whilehere’sonquestionthatcontinuousstressisharmful,severalstudiessuggestthatchallengingsituationsinwhichyou’reabletorisetotheoccasioncanbegoodforyou..Ina2001studyof158hospitalnurses,thosewhofacedconsiderableworkdemandsbutcopedwiththechallengeweremorelikelytosaytheywereingoodhealththanthosewhofelttheystressthatyoucanmanagealsoboostimmune(免疫的)function.InastudyattheAcademicCenterforDentistryinAmsterdam,researchersputvolunteersthroughtwostressfulexperiences.Inthefirst,atimedtaskthatrequiredmemorizingalistfollowedbyashorttest,subjectsthroughagory(血淋淋的)videoonsurgicalprocedures.ThosewhodidwellonthememorytesthadanincreaseinlevelsofimmunoglobulinA,anantibodythat’sthebody’sfirstlineofdefenseagainstgerms.Thevideo-watchersexperiencedadownturnintheantibody.Stresspromptsthebodytoproducecertainstresshormones.Inshortburststhesehormoneshaveapositiveeffect,includingimprovedmemoryfunction.“Theycanhelpnervecellshandleinformationandputitintostorage,”saysDr.BruceMcEwenofRockefellerUniversityinNewYork.B