string(231) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%B8%80%E9%80%A0%E9%83%BD%E8%80%83%E5%95%A5%E7%A7%91%E7%9B%AE => Failed to connect to 125.88.227.171 port 38062: Connection refused"
一造都考啥科目
