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  "Humansshouldnottrytoavoidstressanymorethantheywouldshunfoodloveorexercise."saidDr.HansSelyethefirstphysiciantodocumenttheeffectsofstressonthebody.Whilehere'snoquestionthatcontinuousstres

  "Humansshouldnottrytoavoidstressanymorethantheywouldshunfoodloveorexercise."saidDr.HansSelyethefirstphysiciantodocumenttheeffectsofstressonthebody.Whilehere'snoquestionthatcontinuousstressisharmfulseveralstudiessuggestthatchallengingsituationsinwhichyou'reabletorisetotheoccasioncanbegoodforyou.

  Ina2001studyof158hospitalnursesthosewhofacedconsiderableworkdemandsbutcopedwith(设法处理)thechallengeweremorelikelytosaytheywereingoodhealththanthosewhofelttheycouldn'tgetthejobdone.

  Stressthatyoucanmanagemayalsoboostimmune(免疫的)function.InastudyattheAcademicCenterforDentistryinAmsterdamresearchersputvolunteersthroughtwostressfulexperiences.Inthefirstatimedtaskthatrequiredmemorizingalistfollowedbyashorttestsubjectsbelievedtheyhadcontrolovertheoutcome.Inthesecondtheyweren'tincontrol:Theyhadtositthroughagory(血淋淋的)videoonsurgicalprocedures.ThosewhodidgoonthememorytesthadanincreaseinlevelsofimmunoglobulinAanantibodythat'sthebody'sfirstlineofdefenseagainstgermsThevideo-watchersexperiencedadowntumintheantibody.

  Stresspromptsthebodytoproducecertainstresshormones(荷尔蒙).Inshortburststhesehormoneshaveapositiveeffectincludingimprovedmemoryfunction."Theycanhelpnervecellshandleinformationandputitintostorage"saysDr.BruceMcEwenofRockefellerUniversityinNewYork.Butinthelongrunthesehormonescanhaveaharmfuleffectonthebodyandbrain.

  "Sustainedstressisnotgoodforyou"saysRichardMorimotoaresearcheratNorthwesternUniversityinIllinoisstudyingtheeffectsofstressonlongevity(长寿)"It'stheoccasionalburstofstressorbriefexposuretostressthatcouldbeprotective."

  1.Thepassageismainlyabout .

  A.thebenefitsofmanageablestress

  B.howtoavoidstressfulsituations

  C.howtocopewithstresseffectively

  D.theeffectsofstresshormonesonmemory

  2.Theunderlinedword"shun"(LinelPara.l)mostprobablymeans .

  A.cutdownon B.stayawayfrom

  C.runouto

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2020-05-1702:01
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胡久稔

  ABCC

2020-05-17 02:02:38
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