A. 敢于 B. 在于 C. 至于 D. 可以
A. Definition. B. Description. C. Example. D. Support.
A. an acknowledged and influential leader B. a well-known professor C. the chairman of the board D. an advocator
A. 片 B. 页 C. 张 D. 部
A. 正确 B. 错误