string(231) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%B8%80%E5%BB%BA%E5%85%8D%E8%80%83%E5%93%AA%E4%B8%A4%E7%A7%91 => Failed to connect to 101.89.159.206 port 38100: Connection refused"
一建免考哪两科
