string(249) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%B3%A8%E5%AE%89%E5%B8%88%E6%9C%80%E9%9A%BE%E8%80%83%E7%9A%84%E7%A7%91%E7%9B%AE => Failed to connect to 101.89.159.206 port 38187: Connection refused"
注安师最难考的科目
