We’ve talked a lot _______ films. How _____ television now?

A．of, with

B．with, towards

C．about, about

D．for, about

我国石油标准比重是指石油密度在（）与等体积纯水在温度为（）时的密度比值。

A．15℃；4℃

B．15℃；15℃

C．20℃；4℃

D．60^oF；60^oF