临床口腔医师在整个三级口腔预防中的主要职责除外（）。

A.进行自我口腔保健指导

B.做好口腔健康教育工作，传播口腔卫生保健知识

C.提高口腔医疗服务质量，预防病残，恢复口腔功能

D.发展口腔疾病预防技术

E.预测口腔保健的需要

      all scientists from Asia.

A．Were present at the meeting

B．Present at the meeting were

C．Are present at the meeting

D．Present were at the meeting