string(256) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%8E%86%E5%B9%B4%E8%80%83%E7%A0%94%E5%9B%BD%E5%AE%B6%E7%BA%BF%E4%B8%80%E8%A7%88%E8%A1%A8 => Failed to connect to 14.18.117.71 port 38164: Connection refused"
历年考研国家线一览表
