Nowadays _____ students go abroad for further study every yearA.three thousandB.three thousandsC.thousands ofD.three thousands of选哪个?为什么?

Nowadays _____ students go abroad for further study every yearA.three thousandB.three thousandsC.thousands ofD.three thousands of选哪个?为什么?
Nowadays _____ students go abroad for further study every year
A.three thousand
B.three thousands
C.thousands of
D.three thousands of
选哪个?为什么?

Nowadays _____ students go abroad for further study every yearA.three thousandB.three thousandsC.thousands ofD.three thousands of选哪个?为什么?
选 C,现在,每年成千上万的学生出国继续深造.
thousands of+n 是固定用法,表示成千上万的,数以万计的.

选C
像hundred,thousand，million,billion这些词，前面带有具体数字的时候不可以加S。如果看到加了S的这些词， 后面就必须紧跟of，而且前面同样不可以有具体数字。

C