单项选择题

Newwordsareusuallynotaccepteduntilthey___.
[A]canexpresscommonideas
[B]areincludedinschoolsubjects
[C]areprovedusefulbyscientists来源:考试大
[D]gainpublicagreement

A.
[A]canexpresscommonideas
[B]areincludedinschoolsubjects
[C]areprovedusefulbyscientists来源:考试大
[D]gainpublicagreement