The teacher apologized          late.

A．to his students to arrive

B．to his students for arriving

C．at his students to arrive

D．at his students for arriving

功能祛风除湿，化痰痛络，活血止痛的方剂是（）。

A.羚角钩藤汤

B.镇肝息风汤

C.天麻钩藤饮

D.小活络丹

E.牵正散