My friend Martin was very sick with a strange fever; _______, he could neither eat nor sleep. [ ]

A. as a result

B. after all

C. any way

D. otherwise

国家必须用经济手段来对保险经纪市场进行监管，经济手段通过（）调节供需关系。

A.行政机制

B.竞争机制

C.价格机制

D.市场机制