string(274) "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%9F%BA%E7%A1%80%E7%8F%AD%E4%BB%80%E4%B9%88%E6%97%B6%E5%80%99%E6%9B%B4%E6%96%B0%E5%AE%8C => Failed to connect to 14.116.215.7 port 38230: Connection refused"
注会基础班什么时候更新完
