string(274) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%BA%8C%E5%BB%BA%E5%B8%82%E6%94%BF%E5%88%B7%E9%A2%98%E6%AF%94%E8%BE%83%E5%A5%BD%E7%9A%84%E8%BD%AF%E4%BB%B6 => Failed to connect to 61.171.74.35 port 38027: Connection refused"
二建市政刷题比较好的软件
