string(256) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%B3%A8%E4%BC%9A%E8%80%83%E8%AF%95%E5%A4%A7%E7%BA%B2%E8%83%BD%E5%8A%9B%E7%AD%89%E7%BA%A7 => Failed to connect to 61.171.74.35 port 38027: Connection refused"
注会考试大纲能力等级
