—— Which would you like, tea or coffee?

—— Either ______ OK, but I prefer coffee ______ milk.

A．is; has

B．are; with

C．is; with

D．are; has

只有当（）均在合格有效期内，锅炉才能投入运行。

①内部检验；

②外部检验；

③水压试验。

A.①②；

B.②③；

C.①③；

D.①②③。