阅读理解 ScientistshavefoundthathumaneyesaremorelikelytobedamagedbyUVrays(紫外线)while
skiinginthesnow-coveredareasthansittingonthebeach,accordingtoareportbytheUKnewspaper
TheTelegraph.
TheresearchersatKanazawaMedicalUniversity,JapanandAmericancompanyJohnson
Johnsonconductedthestudytogether.Theylookedattheeffectsoflightreflectiononnewlyfallen
snowonaskitrail(aroughpath)inIshikawaDistrict,northernJapan.Theycomparedtheresultswiththe
levelsofUVraysonasandbeachinsouthernJapan'sOkinawaDistrict.
Theyfoundthatonthebeach,eyesareexposedtoadaily260kilojoules(千焦耳)ofUVasquare
metercomparedto658kilojoulesinsnow-coveredareas.
ThefindingsaresupportedbytheJapanMeteorologicalAgency.Accordingtotheagen-cy,the
reflectionrateofUVlightonbeachesisoftenbetween10and25percent,comparedto80percentinthe
newsnowareas.Theamountoflightincreased4percentwitha300-meterriseinheight.
MostofusknowthatUVrayscanharmtheskin.That'swhywewearsunscreenonourskinbeforewe
getoutinthesun.ButmanyofusmaynotrealizethatUVraysarealsoharmfultotheeyes.
IfyoureyesareexposedtolargeamountsofUVradiationoverashortperiodoftime,youmay
experienceakindofsunburnoftheeye,whichisharmful.Youreyeswillbecomeredandfeelastrange
feeling.Theymaybesensitivetolight.Fortunately,thisisusuallytemporary(暂时的)andseldomcauses
permanentdamagetotheeyes.
Long-termexposuretoUVradiation,however,canbemoreserious.Scientificstudiesandresearches
haveshownthatexposuretosmallamountsofUVradiationoveraperiodofmanyyearsincreasesthe
chanceofeyedamage,whichcouldleadtototalblindness.1.YouwouldmostlikelyfindthearticleinA.adoctor'sdiary
B.atraveljournal
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