string(284) "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%E6%AD%A3%E7%A1%AE%E7%8E%87%E5%A4%9A%E5%B0%91%E7%AE%97%E5%90%88%E6%A0%BC => Failed to connect to 101.91.112.32 port 38162: Connection refused"
二建模拟题正确率多少算合格
