. She learnt both business and history, but she knows________of them well, though she can speak on subjects in general.

A．none; any

B．nothing; anything

C．neither; both

D．either; neither

患者，女性，20岁。腹泻2个月，每日4～5次，粪便呈黯红色，有粪质带血或黏液，有腥臭味，最可能的诊断为（）。

A.溃疡性结肠炎

B.细菌性食物中毒

C.霍乱

D.细菌性痢疾

E.肠阿米巴病