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1Anewstudyhasfoundnoevidencethatsunscreen,commonlyusedtoreducetheriskofskincancer,actuallyincreasetherisk.ResearchersfromtheUniversityofIowabasedtheirfindingsonareviewof18earlierstudiesthatlookedattheassociationbetweensunscreenuseandmelanoma(黑素瘤).Theysaidthattheyfoundflawsinstudiesthathadreportedassociationsbetweensunscreenuseandhigherriskofmelanoma.Mosthealthexpertsbelievethatbyprotectingtheskinfromtheharmfuleffectsofthesun,sunscreenhelpspreventskincancer,whichisincreasinginincidence(发生率)fasterthananyothercancerintheUnitedStates.Butquestionshasbeenraisedaboutsunscreenandwhetheritmayhasoppositeeffect,perhapsbyallowingpeopletoremainexposedtothesunlongerwithoutburning.Theresearcherssaidthatamongtheproblemswithsomeearlierstudiesisthattheyoftenfailedtotakeintoaccountthatthosepeoplemostatriskforskincancer---peoplewithfairskinandfreckles(雀斑),forexample---aremorelikelytousesunscreen.Asaresult,itmayappearthatsunscreenusersgetcancermoreoften.Thestudies,whichgenerallyreliedonvolunteerstorecalltheirsunscreenuse,werealsounabletoprovehowwelltheproductshadbeenapplied,saidthenewstudy.1.Theunderlinedword“flaws”inthe2ndparagraphmostprobablymeans_________.A.evidenceB.factsC.faultsD.failures2.Peoplewithfairskinandfreckles____________.A.seldomusesunscreenB.aremoreindangerofskincancerC.canbefreefromtheharmofthesunD.oftenexposethemselvestothesun3.Wecanlearnfromthepassagethat.A.sunscreenusersgetskincancermoreoftenB.thevolunteershaveprovedtheeffectofsunscreenC.thenewstudywasbasedontheexperiencesofvolunteersD.thenumberofskincancerpatientsisincreasinginAmerica4.Whichofthefollowingcanbethetitleforthispassage?A.SunscreentoPreventSkinCancerB.SunscreentoIncreaseSkinCancerC.SkinCancerCausedbySunscreenD.SkinCancerCausedbyFreckles2AftertheSummerOlympicsareover,whenalltheathleticshavegonehomeandthetelevisionaudiencehasswitchedoff,anothergroupofathleticsandfanswillarriveatthehostcity,andanothercompetitionwillbegin.ThesearetheParalympics,thegamesforathleteswithadisability.ButinBeijingin2008,forth
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