---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
网友回答
A. a better; better than
B. a worse; as good as
(答案→)C. a cheaper; as good as
D. a more important; not as good as
解析：根据语境可知，我们要买的是既便宜又好的衣服。