I have no idea ________ is better, so I took _______ of them.

A．what, both

B．what, none

C．which, both

D．which, all

关于急性泪囊炎的描述正确的是()

A．多在慢性泪囊炎的基础上发生

B．最常见的致病菌是金黄色葡萄球菌或溶血性链球菌

C．泪囊周围组织的急性炎症

D．可能导致眶蜂窝织炎

E．应尽早行泪道冲洗将泪囊内脓液排出