质量信息的特点有延时性、（）、事实性和不完全性。
A.质量性
B.科学性
C.价值性
D.真实性
参考答案：C
Not only ________ their own ideas on the matter,but ________ theirs .
A．do the teacher have, do the students have
B．the teacher have, the students have
C．he teacher have,do the students have
D．do the teacher have, the students have
A．E=Bav，
B．E=NBav，
C．E=Bav，
D．E=NBav，
