I really don't know how anyone can _____ your constant complaint; no wonder you have lost so many friends.

A．come up with

B．end up with

C．put up with

D．keep up with

低血糖症按病因可分为（）

A.外源性、内源性和功能性

B.吸收后低血糖

C.空腹和餐后低血糖

D.血糖利用过度和生成不足

E.器质性和功能性