治疗腹痛湿热壅滞证，首选的方剂是（）
A.大承气汤
B.正气天香散
C.枳实导滞丸
D.小建中汤
E.大黄附子汤
参考答案：A
—I’m a little bit nervous because I don’t know how to speak in front of so many people.
—_______.
A．I’m sorry to hear that. Let me help you.
B．Take it easy. I’ll help you.
C．Don’t say that again. You needn’t any help.
D．That’s all right. Do you need my help?
如果规模收益和投入的资本量不变，对于生产函数，单位时间里增加10%的劳动投入，产出将( )。
A．增加10%B．增加小于10%C．减少10%D．增加小于10%
