string(240) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%B3%A8%E4%BC%9A19%E5%B9%B4%E5%90%84%E7%A7%91%E9%80%9A%E8%BF%87%E7%8E%87 => Failed to connect to 14.116.215.7 port 38230: Connection refused"
注会19年各科通过率
