_____ that smells so good? It makes my mouth water.

A．What is

B．Is that what

C．What is it

D．Is it what

苓桂术甘汤主治病证的病机是（）

A.脾气虚弱，痰湿阻滞

B.脾虚湿盛，水溢肌肤

C.中阳不足，脾失健运

D.脾肾阳虚，水气内停

E.水热互结，小便不利