问题补充:
Our school has a big library. There are about ten books in it.
A. thousand
B. thousands
C. thousand of
D. thousands of
答案:
(答案→)A. thousand
B. thousands
C. thousand of
D. thousands of
解析:句意:我们的学校有一个大图书管。那里面有1万本书。thousand前面有确切的数字,表示确定所指时,不用of,不加s,故选A