Question

It is said that__young people may lose their abilities to hear after five years if they listen...

A six thousand B thousands of ..为什么是B

Answer 1

people是集合名词，不能用具体数字修饰，A错。
B意为成千上万的，故选B.
望采纳。

Answer 2

选B，意思是成千上万，根据意思，只是推测，所以不能说出一个准确的数字，只能说一个概数，这是我的理解，如果是确定6千人，那么用six thousand people 就行了

Answer 3

people不可数，故不能用具体数字修饰，但表示“成千上万”这类意思的约数可以修饰。