I fell in love _______  the beautiful city of Ningbo while I was  _______ vacation there. [ ]

A. on; with

B. to; in

C. to; for

D. with; on

证券自律组织通常是指 ( )

A．证券监管机构
B．证券经营机构
C．证券交易所
D．证券行业性组织