选择填空。

A: Excuse me. Where's the nearest bookshop?

B: Sorry, I don't know. 

A: ______  [ ]

A. Thanks a lot.

B. All right. 

C. Not at all. 

D. Thank you all the same. 

夏枯草的主要功效是

A．清心
B．清肺
C．清肝
D．清胃
E．清小肠