ThedevelopmentoftheSemanticWebproceedsinsteps,eachstepbuildingalayerontopofanother.Thepragmaticjustificationforthisapproachisthatitiseasiertoachieve(请作答此空)onsmallsteps,whereasitismuchhardertogeteveryoneonboardiftoomuchisattempted.Usuallythereareseveralresearchgroupsmovingindifferentdirections;this()ofideasisamajordrivingforceforscientificprogress.However，fromanengineeringperspectivethereisaneedtostandardize.So,ifmostresearchersagreeoncertainissuesanddisagreeonothers,itmakessensetofixthepointofagreement.Thisway,evenifthemoreambitiousresearcheffortsshouldfai1，therewil1beatleast()positiveoutcomes.Oncea()hasbeenestablished，manymoregroupsandcompanieswilladoptit，insteadofwaitingtoseewhichofthealternativeresearchlineswillbesuccessfulintheend.ThenatureoftheSemanticWebissuchthatcompaniesandsingleusersmustbuildtools，addcontent，andusethatcontent.WecannotwaituntilthefullSemanticWebvisionmaterializes-itmaytakeanothertenyearsforittoberealizedtoitsfull()(asenvisionedtoday,ofcourse).
A.Conflicts B.Consensus C.Success D.disagreement正确答案C
