题目内容：
Questionsarebasedonthefollowingpassage: Isteachingimportant9．Well,ofcourseitis．Therewasatimewhenthenecessaryknowledgecouldbetaughttotheyoungbyfamilymembers．Butassocietiesbecamemorecomplexanddivisionoflabormorecommon,itwasimpossibleforfamilymemberstoteachtheinformationandskillsyoungpeopleneededtobecomeusefulmembersofthesociety．Astheneedforspecialistsappeared,thejobofteachingcameintobeinginourcounty,andteachingasajobhasbeenofincreasingimportanceoverthepasthundredyears．
Today,wehavestrictrulesforteachers．Wehopeallchildrencanattendschools．Manythingstellusthatteachingisindeedan"important"job．Inrecentyears,therehasbeenanincreasingneedforteacherstobe"responsible"．Thismeansthatthepublicexpectsteacherstosucceedinteachingimportantinformationtotheyoung．Teachers'salariestoday,whilenotmuch,certainlyaremuchhigherthantheywereinpastyears．Theseincreaseshavecomeaboutbecausepeoplehaverealizedthatwithoutenoughsalaries,peoplewhohaveabilitieswillnotbeco~neteachers．Todayalmostnoonesaysthat"anybodywilldo"forateacher．Thepublicexpects"qualitypeople"toteachtheyoung,andprogressisbeingmadetogivesalariesthatwillmakepeoplewhohaveabilitiesbecometeachers．
Beforethejobofteachingcameintobeing（ ）． A．familymembershadbeenresponsiblefortheeducationoftheyoung
B．specialistshadbeeninchargeofteachingyoungpeople
C．youngpeoplehadhadtobeself-educated
D．thesocietyhadplayedanimportantroleineducatingyoungpeople
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答案解析：