－How did it        that the secretary knew where we were?

－Maybe he had been following us.

A．come about

B．come across

C．come off

D．come round

下列选项中，属于宏观消费问题的有（）

A.消费需求与总需求

B.消费结构与经济结构

C.消费决策与储蓄决策

D.消费信贷

E.消费与经济增长