string(292) "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%E6%A8%A1%E6%8B%9F%E5%8D%B7%E5%92%8C%E7%9C%9F%E9%A2%98%E5%8D%B7%E5%93%AA%E4%B8%AA%E9%9A%BE%E4%B8%80%E7%82%B9 => Failed to connect to 61.171.74.35 port 38027: Connection refused"
二建模拟卷和真题卷哪个难一点
