string(242) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=2021%E5%B9%B4%E8%80%83%E6%B3%A8%E4%BC%9A%E8%BF%98%E6%9C%89%E7%94%A8%E5%90%97 => Failed to connect to 14.18.117.71 port 38069: Connection refused"
2021年考注会还有用吗
