您即将离开北大未名BBS，访问
https://www.bg3.co/a/cun-li-yan-bo-xuan-dao-jiao-an-yu-jing-jing-chu-zhao-jiang-di-jiao-tong-shi-gu-fa-sheng.html
该网址与北大未名BBS无关，提醒您访问时注意判断信息真伪。
继续访问