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伪“北大树洞”被青研害惨了，但是里面还存留有许多新的、旧的优质课程测评帖子 笔者提议热心洞友将伪“北大树洞”中的课程测评等内容搬运至pinzhixiaoyuan或者本帖下面，将其留存以惠及所有北大学子，同时以防不测
支持。除了课程测评，还可以搬运一切对学业和工作有益的科普帖、讨论帖，彻底打破伪洞在信息资源上的优势，同时保护更多不想泄露密码的同学免受青研的窥视
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怎么上旧的树洞啊
treehole.pku.edu.cn