泻下药的主要功效有（）
A.泻下通便
B.清热泻火
C.活血止痛
D.化痰止咳
E.逐水退肿
参考答案：A, B, E
患者，男，60岁，近日小便量极少，甚至无尿，伴胸闷，心悸，神识昏蒙，恶心呕吐，面白唇暗，四肢欠温，痰涎壅盛，苔白腻，脉沉缓。
如果患者汗多兼面色潮红，口干，舌红少苔，脉细数，可选用（）
A.大补元煎汤
B.生脉散
C.独参汤
D.参附汤
E.沙参麦冬汤
-----Could you tell me ______ to go to Hannan by air?
-----Just a minute, please. Let me have a look.
A．how much does it cost
B．how much did it cost
C．how much it cost
D．how much it costs
