the highest mountain pass in europe is ___

题目

the highest mountain pass in europe is ___
1 of 2473 metres 2 at 2473 metres high 3 high 2473 metres 4 2473 metres high
选择哪一个,为什么

答案

D.2473 metres high
不是用名词或者介词短语的问题,而是,有多高的表达是 数字+单位+形容词