string(267) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%B3%A8%E5%AE%89%E4%B8%AD%E7%BA%A7%E4%B8%8E%E5%88%9D%E7%BA%A7%E8%80%83%E8%AF%95%E5%8C%BA%E5%88%AB => Failed to connect to 125.88.227.171 port 38062: Connection refused"
注安中级与初级考试区别
