I should apologize to you for failing to visit you last week, but I've been very busy_____ the past few months.

A．since

B．before

C．among

D．over

治疗中风半身不遂肝阳上亢，脉络瘀咀证，应首选（）

A.补阳还五汤

B.血府逐瘀汤

C.天麻钩藤饮

D.地黄饮

E.牵正散