２０世纪是人类最伟大世纪之一。在这个世纪里，多少个世纪人们所梦寐以求的理想，变成活生生的现实。社会主义从无到有，从小到大，从一国实践发展为多国实践，在坎坷和曲折中不断前进，开辟了人类社会最伟大变革的历史进程。２０世纪的社会主义运动对人类进步和世界文明做出? The twentieth century is one of the greatest humankind of the century. In this century, the ideal that people have dreamed of for centuries has become a living reality. From the very beginning, from childhood to age, from the practice and development of one country to the practice of many countries, socialism keeps moving forward in ups and downs and twists and turns, opening up the historical process of the greatest transformation in human society. The socialist movement of the 20th century made its contribution to human progress and world civilization?