【TwoNewcastlescientistsaresettingthemselvestoopenoureyestothemedicaltruthbyclaimingthatnaturalsunlightmayhelppreventskincancer．Dr．RonLaura，professorofhealtheducationatNewcastleUniversity，andseniorchemistMr．Jo】
TwoNewcastlescientistsaresettingthemselvestoopenoureyestothemedicaltruthbyclaimingthatnaturalsunlightmayhelppreventskincancer．
Dr．RonLaura，professorofhealtheducationatNewcastleUniversity，andseniorchemistMr．JohnAshtonsaidtheirresearchpointstoacomplete （51）___oftheacceptedscientifictheory．Theysaidthatsunscreencreamsmayhelpcauseskincancer，theartificialindoorlightcouldbe （52）___andthatarangeofdrugsincommonusecouldalso （53）___melanoma--atypeofcancerthatappearsasadarkspotontheskin．
Theresearchislikelytobeunwelcomeinsometraditionalmedicalresearchcircles．Itisbasedonanew （54）___thatourbodiesareprotectedfromskincancerbytheregulationofagroupofcomplexvitamins （VitaminD） andimmuneprocess．
Thesunscreens，artificiallightanddrugscouldallunfavorablyaffecttheproductionofthesevitaminsandincreasetheskin's （55）___tothesun．ButDr．Laurasaidnaturalsunlightpassingthroughtheeyeshelped（56）___theproductionofcancerprotectionVitaminD．
HesaidrecentstatisticsfromtheUnitedStatesindicatedthatpeoplewhoworkedindoorsalldayinartificiallightweremore（57）___melanomasthanthosewhoworkedoutdoors．Indoorworkersshouldtrytohaveatleastonehourof （58）___todirectsunlighteveryday，（59）___intheearlymorningandlateafternoonwhenultravioletintensivelywaslower，Dr．Laurasaid．
Sunscreens，long （60）___asessentialforbeachlovers，couldalso （61）___theproductionofVitaminD．LauraandAshtonsaidsunscreensgivepeoplea （62）___senseofsecurityinthinkingtheyare （63）___fromthesun'srays．
Dr．Laurasaidmorestatistics（64）___theirclaimhadcometolightsincethefirstarticlewaspublished．Hebelieveshisresearchfindingsaretooimportanttobe （65）___tothescientificworld．
51．A．contributionB．reversalC．combinationD．recognition52．A．beneficialB．comfortableC．harmfulD．favorable53．A．promoteB．reduceC．removeD．eliminate54．A．assumptionB．law