D
Citiesalarmedbydeathsandinjuriesofpedestr iansaretakingeffortstomakecrosswalkssaferforpeopleonfoot,especiallyseniorsandchildrenwhoneedmoretimetocrossstr eets.
Apedestr ianiskilledinatr afficaccidentintheUSAevery110minutes；oneisinjuredeverynineminutes,accordingtoofficialdate.Crosswalkcanbeespeciallydangerousfortheelderly.Amongpeople70andolder,36%ofpedestr iandeathsin2006occurredincrosswalks,comparedwith21%ofthoseyoungerthan70,accordingtotheInsuranceInstituteforHighwaySafety.
TheFederalHighwayAdministr ation（FHWA）advisesthatnextyearstatesincreasebynearly15%theamountoftimetr afficlightsprovideforpedestr ianstocrossthestr eetaftertheflashingorangehandappears.
FHWAspokesmanDougHecoxsaysreasonsforthechangeincludeanagingpopulationthatneedsmoretimetocross,health-consciousAmericanswalkingmore,childrenencouragedtowalktopreventgettingoverweightandhighgaspricespushingpeopletowalkinsteadofdrive.
Pedestr iandeathswentd ownby12%from5,449in1996to4,784in2006.Butamongthosein2006,471werekilledincrosswalks,downslightlyfrom488tenyearsearlier,theNationalHighwayTrafficSafetyAdministr ation(NHTSA)says.
53.Whichofthefollowingistr ueaccordingtothetext?
A.Among100pedestr iandeathstherewere21peopleyoungerthan70.
B.Oldpeoplearemorelikelytomeetwithaccidentsincrosswalks.
C.Trafficaccidentskilledmoreoldpeoplethanyoungpeople.
D.aboutseventr afficaccidentshappenedperhour.
正确答案：B
