(VOA慢速英语十一)坐过山车有益健康 可排出肾结石(10.14)

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1、（VOA慢速英语十一）坐过山车有益健康可排出肾结石（10．14）重点单词：expand[iks'pænd]v.增加，详述，扩展，使...膨胀，rough[rʌf]adj.粗糙的，粗略的，粗暴的，艰难的，讨厌的，不适的pilot['pailət]n.飞行员，领航员，引航员vt.领航，驾association[ə.səusi'eiʃən]n.联合，结合，交往，协会，社团，联想measure['meʒə]n.措施，办法，量度，尺寸v.测量，量disorder[dis'ɔ:də]n.杂乱，混乱vt.扰乱theme[θi:m]n.题目，主题variable['vɛəriəbl]adj.可变的

2、，易变的n.变量，易变的东heed[hi:d]n.注意，留心v.注意，留心violent['vaiələnt]adj.暴力的，猛烈的，极端的听力文本：RollerCoasterRidesCanHelpWithPainfulConditionFromVOALearningEnglish,thisistheHealthandLifestylereport.Rollercoastersarefastandexciting.Butpassingapainfulkidneystoneisnot.Theprocessispainfulandcantakealongtime.ButAmerica

3、nresearchershavefoundthatarollercoasterridejustmighthelpthosesufferingfromakidneystone.Theysaysuchrideshelppatientspassthestoneswitha70percentsuccessrate.ThefindingscomefromresearchersatMichiganStateUniversity.TheypublishedtheirfindingsinTheJournaloftheAmericanOsteopathicAssociation.DavidWarti

4、ngerledthestudy.HesayshebecamecuriousafterhearingmanystoriesofpeoplewhopassedkidneystonesaftergoingonafunrideatathemeparkinFlorida.Patientstoldhimthatafterridinga"rollercoasteratWaltDisneyWorld,theywereabletopasstheirkidneystones."Onemanevensaidhepassedthreedifferentstonesaftergoingontheridemo

5、rethanonce!Totestwhethertheclaimsweretrue,Wartingeruseda3-dimensionalmodelofahollowkidney.Insidethemodelheplacedthreekidneystones,eachnolargerthan4millimeters.Thenheplacedtheman-madekidneyintoabackpack.TheresearchersputthekidneyonDisney'sBigThunderMountainrollercoasterfor20rides.Therearemanyva

6、riablesWartingerfoundthatwherethepersonsitsontherollercoastercanmakeabigdifference.Hesaid"inthepilotstudy,sittinginthelastcaroftherollercoastershowedabouta64percentpassagerate."Sittinginthefirstfewcarsonlyhada16percentsuccessrate.Researchersdecidedtoexpandthestudy.Theyrodethesamerollercoasterw

7、ithseveralkidneymodels.Whensittinginthebackcar,thesuccessrateofpassingthestoneswas70percent.Italsomatteredwherethestoneswerelocatedinthekidney.Theresearchersfoundthatstoneslocatedintheupperpartofthekidneymodelwerepassed100percent.Anothe