string(292) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%B3%A8%E4%BC%9A%E5%89%8D%E5%9F%BA%E7%A1%80%E7%8F%AD%E5%92%8C%E6%96%B0%E5%9F%BA%E7%A1%80%E7%8F%AD%E7%9A%84%E5%8C%BA%E5%88%AB => Failed to connect to 14.18.117.71 port 38069: Connection refused"
注会前基础班和新基础班的区别
