项目可行性研究应该具有( )。
A．合理性
B．预见性
C．公正性
D．科学性
E．可靠性
参考答案：B,C,D,E
—What did the teacher say to you just now?
—She asked ______ yesterday.[ ]
A. why was Mike not here
B. why is Mike not here
C. why Mike was not here
D. why Mike is not here
成本/效果比是
A．用药安全性的指标
B．用药有效性的指标
C．用药适当的指标
D．用药经济性的指标
E．用药最佳化的指标
