LiuXiangwasthefirstAsiantowinthemen’s110mhurdles（跳栏）attheOlympicGamesinAthens.Afterthathebecameanidol（偶像）totheyoungpeople.WhenLiuXiangcrossedthefinishlinefaraheadoftheotherplayersinaworldrecord-equalingtimeof12.91secondsmanyfansburstintotears.ItwasLiu’sfirstOlympicsandhewonthegoldmedal.“IneverthoughtIcouldrununder13secondsandIneverthoughtIwouldbreaktheOlympicrecord”saidLiuintears“Iamveryveryexcited.Thisisawonder.I’mproudnotjustformyselfandforChinesebutforAsia.Myracewentwonderfullyfromstarttofinish”Liuadded.“ItisanamazingexperiencebeingtheOlympicchampion.Iwanttothankmycoachandmyfriendsforalltheirhelp.IthinktodayweChinesehaveshowedtheworldwecanrunasfastasanybodyelse.”
persuadedthemtoletLiupracticethell0mhurdles.SincehisreturnfromAthensLiuhasbeenatthecenterofamediacircusWhenLiuwasagradefourstudentinaprimaryschoolhewaschosenbytheJuniorSportsSchoolofPutuoDistrictinShanghaitopracticejumping.ButwhenabonetestshowedhewouldnotbecomeatallmanLiuwasaskedtogiveuppracticingafteroneyearalthoughhehadwonthenationalchampionshipforhisagegroup.Liu’sparentsalsowantedhimtogiveitupandstudymoreatschoolbutLiudecidedtocontinuepracticingjumping.In1998whenLiuXiangaged15metthefamouscoachSunHaipinghiscareerchangedgreatly.SunbelievedLiuwasarisingstarandaftervisitingLiu’sparentsseveraltimesfinallyhe（媒体焦点）.Hebecamewellknownaroundtheworld.ButLiuthinks2004isjustthebeginninghewillbebetterin2008hesaid“Forsomeplayersit’sjustajob.Formeit’swhatIlove.”
根据短文内容选择最佳答案。
(1)AtwhatagedidLiuXiangwintheOlympicchampionship?
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B．15
C．21
