治疗痛经湿热下注证，应选用（）
A.清经散
B.保阴煎
C.清热固经汤
D.两地汤
E.清热调血汤
参考答案：E
2．--- Why were you absent yesterday?
--- I caught a cold, _______I had been walking around in the rain.
A．but
B．so
C．and
D．For
班轮运输形式下的运输合同一般通过（）方式成立。
A.托运单
B.运输合同
C.订舱单
D.仓单
