----Where can we get your latest children’s story?

----Soon. It _______ and will come out next week.

A．has printed

B．is being printed

C．has been printed

D．has been printing

向绿色中加入白色后，颜色发生的变化是（）。

A.明度和彩度升高

B.明度和彩度降低

C.明度升高，彩度降低

D.明度降低，彩度升高