--- What were you doing this time yesterday?

　　--- I ______ on the grass and drawing a picture.

A．sit

B．sat

C．am sitting

D．was sitting

常采用蜜炙法炮制的药物是（）

A.桂枝

B.麻黄

C.三棱

D.党参

E.芫花答案解读：蜜炙：增强润肺止咳作用有百部、枇杷叶、马兜铃、款冬花、紫菀、齐黄等，增强补脾益气行用有黄芪、甘草、参等；缓和药有麻黄、桂枝、升麻等，矫味和消除副作用有马兜铃、百部等。