Womenarealotmorelikelytosufferabrokenheartthanmenresearcherssay.Thegoodnewsisthatitprobablywon'tkillyou.InthefirstnationalstudyofitskindresearchersattheUniversityofArkansaslookedatratesof"brokenheartsyndrome"—whenasuddenshockorlastingstresscausesheartattack-likesymptomsorheartfailure—andfoundthatitespeciallyaffectswomen.

WomenareatleastseventimesmorelikelythanmentosufferthesyndromeandolderwomenareatgreaterriskthanyoungeronesaccordingtodatapresentedWednesdayattheAmericanHeartAssociationconferenceinOrlando."It'stheonlycardiac(心脏的)conditionwherethere'ssuchafemalepreponderance"Dr.AbhiramPrasadaMayoCliniccardiologistwhowasnotassociatedwiththestudytoldtheAP.Heartattackandheartdiseaseofcoursestrikemenmoreoftenandearlierinlifethanwomen.

Brokenheartsyndromecanhappeninresponsetoshockingorsuddenlyemotionalevents—bothpositiveoneslikewinningthelotteryornegativeoneslikeacaraccidentortheunexpecteddeathofalovedone.Afloodofstresshormonesandadrenaline(荷尔蒙与肾上腺素)causespartofthehearttoenlargetemporarilyandtriggerssymptomsthatcanlooklikeheartattack:chestpainshortnessofbreathirregularheartrhythm.Thedifferenceisthatthefactorsthatwouldnormallycauseheartattacksuchasablockedartery（动脉）aren'tpresent.

Onetheoryisthathormonesplayarole.Anotheristhatmenhavemoreadrenalinereceptorsoncellsintheirheartsthanwomendo"somaybemenareabletohandlestressbetter"andthechemicalsurfeit(过量)releasesDeshmukhsaid.About10%ofsuffererswillhaveasecondepisodeatsomepointbutmostreturntofullheartfunctionwithoutpermanentdamageorneedforfollow-uptreatment.SoitlookslikethewaytomendabrokenheartiswhatMomalwayssaid:justgiveittime.

50.WhatisthefindingofthesearchersattheUniversityofArkansasaccordingtothepassage?

A.Menhavetheequalchancetosufferabrokenheart.

B.Alotofpeoplearekilledbyheartattack.

C.Womenaremorelikelytosufferabrokenheartthanmen.

D.Youngerwomenaremorelikelytosufferabrokenheart.

51.Whichofthefollowingisnotlikel