His first book       next month is based on a true story.                       

A．published

B．to be published

C．to publish

D．being published

治疗风湿痹证，腰膝酸痛，下肢痿软无力，遇劳更甚者，应首选（）。

A.防己

B.秦艽

C.五加皮

D.豨莶草

E.白花蛇