string(285) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%BA%8C%E5%BB%BA%E8%80%83%E7%82%B9%E7%B2%BE%E8%AE%B2%E5%92%8C%E5%9F%BA%E7%A1%80%E7%9B%B4%E6%92%AD%E5%8C%BA%E5%88%AB => Failed to connect to 101.89.159.206 port 38187: Connection refused"
二建考点精讲和基础直播区别
