2000年是新千年的开始。当人们刚刚从“千年虫”的担忧中解脱出来的时候，却不能从已经过去的历史中解脱。在人们关注未来时，不论基于何种因素，对历史的兴趣并未淡忘，而且话题越来越广泛，研究的程度也越来越深化。北京现代史的研究也是这样一种局面。 “五四”是一个不朽 The year 2000 marks the beginning of the new millennium. When people are freed from the worries of the millennium bug, they can not be freed from the past history. When people pay attention to the future, no matter what kind of factors they take, their interest in history has not been forgotten. The topics are more and more extensive and the degree of research deepens. The study of Beijing’s modern history is also such a situation. “May 4th” is an immortal