string(255) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=211%E9%87%8C%E6%9C%80%E5%A5%BD%E7%9A%8415%E6%89%80%E5%A4%A7%E5%AD%A6%E4%B8%8D%E7%AE%97985 => Failed to connect to 61.171.74.35 port 38041: Connection refused"
211里最好的15所大学不算985
