2007年5月8日,北京××化工学院一名大二学生从主教学楼坠下身亡。5月14日凌晨,北京××大学一名女生从该校一栋学生宿舍7层坠下身亡。5月14日下午,××农业大学西校区内的一名大二男生坠楼身亡。5月15日××师范大学一位女研究生从校内科技楼11层坠下,当场身亡。5月16日中午,中国××大学发生一起博士研究生 May 8, 2007, a sophomore from Beijing XX Chemical Institute fell from the main teaching building. On the early morning of May 14, a girl from Beijing XX University died on the 7th floor of a dormitory in the university. On the afternoon of May 14, a sophomore boy in the West Campus of XX Agricultural University died falling down from the building. On May 15, a female graduate student at ×× Normal University fell from the 11th floor of the science and technology building on the campus and died on the spot. At noon on May 16, a doctoral student happened at China’s XX University