一

二

三

4.Sun Yat-sen,who was the leader of the 1911 Revolution,first suggested the idea of a dam across the Yangtze River in 1919. 5.More than a million people who lived in the region have moved from their homes. 1.in which引导　　　　　定语从句。  2.which引导　　　　　定语从句。  3.which引导　　　　　定语从句。  4.who引导　　　　　定语从句。  5.who引导　　　　　定语从句。 

限制性　

非限制性　

非限制性　

非限制性　

限制性