Question

1. Sun Yat-sen, was the leader of the 1911 Revolution,first suggested the idea of a dam across the Yangtze River in 1919.

   A. whom   B. who

   C. that   D. which

Answer 1

l.B解析:who引导非限制性定语从句，先行词为Sun Yat-sen,who在定语从句中作主语。