string(285) "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%E7%B2%BE%E8%AE%B2%E8%91%A3%E9%9B%A8%E4%BD%B3%E8%AF%BE%E5%90%8E%E7%AD%94%E6%A1%88 => Failed to connect to 101.89.166.210 port 38089: Connection refused"
二建市政精讲董雨佳课后答案
