用一种试剂能鉴别苯酚、己烯、己烷、乙醇四种溶液,这种试剂是( )
A:FeCl3溶液
B:饱和溴水
C:石蕊试液
D:KMnO4溶液
Nanjing is _______ capital of Jiangsu and it is _______ city with many places of interest.