五苓散中桂枝的作用是（）
A.发汗解表
B.温心阳，通心脉
C.温经通脉
D.温阳化气
E.调和营卫
参考答案：D
-2．-8，0，64，( )
A．-64
B．128
C．156
D．250
— Wash your hands before having a meal. Have I made myself understood?
— Sure. You _______ before having a meal. It is because of H1N1 flu, right?
— What a good boy! [ ]
A. asked to wash your hands
B. said to wash our hands
C. said to us to wash our hands
D. asked us to wash our hands
