string(274) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%B8%80%E5%BB%BA%E7%9A%84%E8%AF%95%E9%A2%98%E4%B8%80%E8%88%AC%E6%98%AF%E5%87%A0%E6%9C%88%E4%BB%BD%E5%87%BA => Failed to connect to 14.18.117.71 port 38093: Connection refused"
一建的试题一般是几月份出
