string(249) "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%B4%A2%E7%AE%A1%E7%AD%94%E6%A1%88%E7%AC%AC%E4%B8%89%E6%89%B9 => Failed to connect to 101.89.117.144 port 38076: Connection refused"
中级财管答案第三批
