—The books are so nice, which one can I take?

—Oh, you can take _______ of them. I’ll keep none.  

A．both

B．all

C．neither

D．either

带下病的主要发病机制是

A．外感湿邪，损及任、带，约固无力

B．肾气不足，封藏失职，阴液滑脱而下

C．湿邪影响任、带，任脉不固，带脉失约

D．脾虚生湿，流注下焦，伤及任、带

E．肝经湿热，流注下焦，伤及任、带