string(267) "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%E7%BB%8F%E6%B5%8E%E5%B8%88%E5%BB%BA%E7%AD%91%E7%B1%BB%E5%A5%BD%E8%80%83%E5%90%97 => Failed to connect to 101.89.117.144 port 38076: Connection refused"
中级经济师建筑类好考吗
