more thsn two ___years ago,people knew little about the universeA thousands B thousandC thousand of D thousands of哪一个是正确答案 为什么?
问题描述：
more thsn two ___years ago,people knew little about the universe
A thousands B thousand
C thousand of D thousands of
哪一个是正确答案 为什么?
答
b
答
应该选b
thousand 是个数量词 不用加s
thousands of years 是上千年的,没有确指.