题目内容：

this radio is ________ as that one
A more expensive B as expensive C very expensive

优质解答

选B.
as...as...“跟……一样”
后面有as,more和very都不与as一起用.
This radio is as expensive as that one.
译文：这台收音机和那台一样贵.
例句：
Sam is as rich as Alexander.
山姆像亚历山大一样富有.