.

. Though he graduated from a famous university, he was _______ failure as _______ teacher.

A．a; a

B．不填; a

C．不填; the

D．不填

吕某，男性，52岁。气粗息涌，喉间痰呜如吼，痰黄质粘，难以咯出，烦闷不安，口苦，口渴喜饮，舌红苔黄，脉滑数。

若哮证发作时以痰气壅实为主，寒热俱不显著者，必要时可采用下列何方以泻其壅痰（）

A.控涎丹

B.黑锡丹

C.参蛤散

D.紫金丹

E.紫雪丹