—How many students are there in your school?— students I think.A. Three thousandsB. Three

问题补充：

—How many students are there in your school?

— students, I think.

A. Three thousands

B. Three thousand

C.Three thousands of

答案：

解析：此题考查名词的量。确切数量常用数词+hundred/thousand/million/billion+名词的复数形式；不确切数量常用hundreds/thousands/millions/billions + of+名词的复数形式.根据语境可知选择B。