—Mum, could you buy me a dress like this?

—Certainly, we can buy _____ one than this, but _____ this. [ ]

A. a better; better than

B. a worse; as good as

C. a cheaper; as good as

D. a more important; not as good as

装置自聚物的生成与（）有关。

A.氧含量

B.焦油含量

C.TBC含量

D.甲苯