string(274) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%BB%8F%E6%B5%8E%E5%AD%A6%E8%80%83%E7%A0%94%E9%99%A2%E6%A0%A1%E9%80%89%E6%8B%A9%E5%AE%B9%E6%98%93%E7%9A%84 => Failed to connect to 61.171.74.35 port 38027: Connection refused"
经济学考研院校选择容易的
