【背景材料】2005年,资产阶级民主革命的先行者孙中山逝世80周年。1925年3月12日,孙中山在北京逝世,临终前,他嘱咐国民党和全国人民坚持实行“联俄、联共、扶助农工”的三大政策,进行反帝反封建斗争,将革命进行到底。孙中山全心全意为改造中国而耗尽了毕生的精力,真是鞠躬尽瘁, [Background Materials] In 2005, the 80th anniversary of the death of Sun Yat-sen, the forerunner of the bourgeois-democratic revolution. On March 12, 1925, Sun Yat-sen passed away in Beijing. Before his death, he married the Kuomintang and the people throughout the country and insisted on implementing the three major policies of “joining Russia, the Communist Party of the Commonwealth, and supporting agricultural workers” to carry out the struggle against imperialism and feudalism and to carry out the revolution to the end. Sun Yat-sen completely exhausted his lifelong energy to transform China.