研究前提要求药物效果完全相同的方法是
A．最小成本分析 B．成本效果分析 C．成本效用分析 D．回顾性研究 E．成本效益分析
参考答案：A
Flight BA 123 to Vienna is now boarding at
A．Gate 21
B．21St Gate
C．the Gate 21
D．21 Gate
He felt cheap about rushing to get in line before the old lady carrying heavy parcels.
A．felt inferior and ashamed
B．felt not worthwhile of doing something
C．felt bad about doing something
D．felt unhappy about doing something
