----Your monitor is never late for school, is he?

--- ______.He always comes to school earlier than others.

A．Yes, he is.

B．No, he isn’t

C．Yes, of course.

D．No, sometimes

加工不同产品（零件）之间的转换时间（），柔性（）。

A.越短，越差

B.越短，越好

C.越长，越好

D.越长，越差