问题补充:
He raised for the charity to help the poor children.
A. thousand of dollars
B. thousand of dollar
C. thousands of dollars
D. thousands of dollar
答案:
A. thousand of dollars
B. thousand of dollar
(答案→)C. thousands of dollars
D. thousands of dollar
解析:thousand“千”的用法是:如果前面有具体的数字,就不能用复数,也不能加of;如果没有具体数字,就要用复数,并跟of。根据本空位置,应该选 thousands of;dollar是可数名词,故用复数。所以本题选C。