_________ to a lot of new ideas when studying in college, Mary always does something that others can’t understand to realize her dream.

A．Exposing

B．Exposed

C．Being exposed

D．Having exposed

读“明代工商业分布图” , 下列四个商业城市的经济

A．松江的棉纺业发达

B．宣州以造纸业出名

C．广州以冶铁业繁荣

D．成都是茶叶集散地