string(240) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%B8%AD%E7%BA%A7%E8%80%83%E8%AF%95%E8%B5%84%E6%96%99%E5%AE%A1%E6%A0%B8 => Failed to connect to 101.89.143.195 port 38205: Connection refused"
中级考试资料审核
