Do you know how ling Harbin Subway Line One is?

题目

Do you know how ling Harbin Subway Line One is?
Yes ,of course.It is______.
A 340-kilomter-long B 340 kilometers long C 340 kilometers'long

答案

同学,才看到你向我们团队 王牌英语团 发来的求助题,现在为你解答答案：选B解析：这是一种数词+名词复数+形容词作表语的一种表达法,如He is 8 years old.他8 岁.The tree is more than 20 meters tall.这棵树有20多米...