你的看法是正确的A、B这两种表达都是正确的.这一点可以从新课程英语选修7人教版的教师教学用书可以证实.用书上是这样说的:
“as...as通常用于比较结构中.Icant drink as sweet coffee as that.
I haven't seen as old a car as this for years.
注意：这时名词如果是单数,形容词要置于a或an之前.
但有时也能将名词置于as...as之前.I haven't seen a car as old as this for years.
I can't drink coffee as sweet as that.”