He raised for the charity to help the poor children.A. thousand of dollarsB. thousand of

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。