题目内容：
Questionsarebasedonthefollowingpassage:
Suicidehasbeenacauseofconcerninmostsocietiesforalongtime．TheclassicalGreeks,forexample,requiredpeoplewhowantedtokillthemselvestogetpermissionfromthesenate.Whilethislawisnotwithouthumorbytoday'sstandards,itclearlyshowsanawarenessoftheproblemintimesgoneby．Intoday'ssociety,suicideismuchmoreprevalentthanwewanttoadmit．Whydopeopletrytotaketheirownlives?
(51)Themotivesforsuicidecanbecategorizedintoareassuchasafailure,wrath(暴怒),theneedforattention,stress,andsoon．However,thequalitiesofapersonwhowantstotakehisownlifechangefrompersontoperson,makingitdifficulttodepict(描写)thetypicalvictim．Tomaketheproblemevenmoreconfusing,peoplewilloftencamouflage(掩盖)theirtruefeelings,thuscausingtheirfriendstodisregardproblemsthatshouldbeviewedasserious.
IntheUnitedStates,anetworkofcentershasbeencreatedtoattempttopreventsuicides.
Peoplewhoarebitter,worded,ordepressedareencouragedtocontactworkersatthesecenters.
Theseworkers,oftentrainedvolunteers,offerbenevolentadvicetothecallers,tryingtohelpthecallerstoseethatsuicideasasolutionstoproblemsisanillusion．Theaccomplishmentsofthesecenters,insofar(到这个程度)astheireffectivenesstoreducesuicideisconcerned,areminimalHowever,theyhavehelpedalotofpeoplewithawidevarietyofproblems．So,inthesomewhatamorphous(难以名状的)areaofmanhelpinghisfellowman,theyarecertainlyasuccess.
WhichofthefollowingstatementsisTRUEaccordingtothearticle? A．TheclassicalGreeksdidnotknowtheexistenceofsuicide
B．Suicidehasalwaysbeenprevalentinallpartsoftheworld
C．Intoday'ssociety,therearequiteanumberofpeoplewhocommitsuicide
D．Nowadayssuicideisnotascommonasitwasinthepast
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