— A new shop ____________ for a week nearby. Let’s have a look there.

— Good idea. But it doesn’t ______ on Mondays.

A．opened; opened

B．has been opened; open

C．has opened; opened

D．has been open; open

粗加工时，切削液应选用以冷却为主的（）。

A.切削油

B.混合油

C.乳化液

D.极压切削油