三仁汤中杏仁、白蔻仁与生薏苡仁三药相伍的配伍意义是（）
A.宣上畅中渗下
B.透热于上
C.化湿于中
D.渗湿于下
E.清利湿热
参考答案：A
________ to work overtime that evening, I missed a wonderful film. [ ]
A. Having been asked
B. To ask
C. Having asked
D. To be asked
近似数0.033精确到（ ）位，有（ ）个有效数字，用科学记数法表示记作（ ）万．
