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1、2014考研英语阅读真题：考研英语（二）第3篇Cryingishardlyanactivityencouragedbysociety.
Tears,betheyofsorrow,anger,onjoy,typicallymakeAmericansfeeluncomfortableandembarrassed.
Theshedderoftearsislikelytoapologize,evenwhenadevastatingtragedywastheprovocation.
Theobserveroftearsislikelytodoeverything
2、possibletoputanendtotheemotionaloutpouring.
Butjudgingfromrecentstudiesofcryingbehavior,linksbetweenillnessandcryingandthechemicalcompositionoftears,
boththoseresponsestotearsareofteninappropriateandmayevenbecounterproductive.
Humansaretheonlyanimalsdefinitelyknowntoshedemotiona
3、ltears.
Sinceevolutionhasgivenrisetofew,ifany,purposelessphysiologicalresponses,
itislogicaltoassumethatcryinghasoneormorefunctionsthatenhancesurvival.
Althoughsomeobservershavesuggestedthatcryingisawaytoelicitassistanceformothers(asacryingbabymightfromitsmother),
thesheddingoft
4、earsishardlynecessarytogethelp.
Vocalcrieswouldhavebeenquiteenough,morelikelythantearstogainattention.
So,itappears,theremustbesomethingspecialabouttearsthemselves.
Indeed,thenewstudiessuggestthatemotionaltearsmayplayadirectroleinalleviatingstress.
UniversityofMinnesotaresearche
5、rswhoarestudyingthechemicalcompositionoftearshaverecentlyisolatedtwoimportantchemicalsfromemotionaltears.
Bothchemicalsarefoundonlyintearsthatareshedinresponsetoemotion.
Tearsshedbecauseofexposuretocutonionwouldcontainnosuchsubstance.
Researchersatseveralotherinstitutionsareinve
6、stigatingtheusefulnessoftearsasameansofdiagnosinghumanillsandmonitoringdrugs.
AtTulaneUniversity’stearAnalysisLaboratoryDr.PeterKastlandhiscolleaguesreportthat
theycanusetearstodetectdrugabuseandexposuretomedication,
todeterminewhetheracontactlensfitsproperlyofwhyitmaybeuncomfor
7、table,
tostudythecausesof“dryeye”syndromeandtheeffectsofeyesurgery,
andperhapseventomeasureexposuretoenvironmentalpollutants.
AtColumbiaUniversity,Dr.LiasyFarisandcolleaguesarestudyingtearsforcluestothediagnosisofdiseasesawayfromtheeyes.
Tearscanbeobtainedpainlesslywithoutinvadi
8、ngthebodyandonlytinyamountsareneededtoperformhi
