从今年开始 ,人类社会已经进入了公元第二十一个世纪。在过去的那个世纪 ,我们国家经历了帝国主义列强侵略的苦难历史 ,人类经历了两次世界大战 ,中华民族经过艰苦卓绝的奋斗 ,终于迎来了国家的独立与解放 ,特别是改革开放二十年取得的伟大成就 ,为在新世纪里我国社会发展、经 From the beginning of this year, human society has entered the twenty-first century AD. In the past century, our country experienced the hardships of aggression by the imperialist powers. Mankind has experienced two world wars. After an arduous struggle, the Chinese nation has finally ushered in the independence and liberation of the country, in particular, the two decades of reform and opening up The great achievements made are the result of our social development in the new century