string(284) "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%E6%8A%A5%E5%90%8D%E4%BA%86%E4%B8%89%E7%A7%91%E8%83%BD%E5%8F%AA%E8%80%83%E4%B8%80%E7%A7%91%E5%90%97 => Failed to connect to 101.91.112.32 port 38195: Connection refused"
注会报名了三科能只考一科吗
