string(318) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%AF%8F%E5%B9%B4%E7%A0%94%E7%A9%B6%E7%94%9F%E6%8A%A5%E5%90%8D%E6%97%B6%E9%97%B4%E4%B8%8E%E8%80%83%E8%AF%95%E6%97%B6%E9%97%B4%E4%B8%8D%E4%B8%80%E6%A0%B7 => Failed to connect to 14.18.46.51 port 38206: Connection refused"
每年研究生报名时间与考试时间不一样
