Stack Overflow requires external JavaScript from another domain, which is blocked or failed to load.
stackoverflow引用了谷歌中被屏ajax.googleapis.com的jquery.min.js文件。“https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js”
方案1.打开网站：https://www.ipaddress.com/
b.查询一下ajax.googleapis.com对应的IP地址
c.将查询到的IP添加到/ect/hosts
方案2.
firefox浏览器
方案3:
Gooreplacer插件
