string(294) "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%E9%A2%98%E5%92%8C%E9%A2%84%E6%B5%8B%E9%A2%98%E5%93%AA%E4%B8%AA%E5%A5%BD%E4%B8%80%E7%82%B9 => Failed to connect to 101.89.117.144 port 38017: Connection refused"
二建模拟题和预测题哪个好一点
