—I didn’t go to work yesterday because my car broke down.

—You _______ mine.I wasn’t using it then.

A．might borrow

B．could have borrowed　

C．must have borrowed

D．ought to borrow

从中长期来看，决定总供求规模和结构的矛盾的主要方面是( )。

A．需求

B．供给

C．产业结构

D．宏观调控