The building is .A. twenty-metre-highB. twenty metre highC. twenty-metres-highD. twenty m

The building is .
A. twenty-metre-high
B. twenty metre high
C. twenty-metres-high
D. twenty metres high

A. twenty-metre-highB. twenty metre highC. twenty-metres-high(答案→)D. twenty metres high解析：考查计量的表达。数词＋名词＋形容词。这种结构常用来表示“长度、宽度、高度、年龄或时间”等。需注意名词需要根据前面数词的单复数进行变化。结合语境可知选D。

对的，就是这个意思