string(249) "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%E5%BA%94%E8%AF%A5%E5%85%88%E8%80%83%E5%93%AA%E5%87%A0%E9%97%A8 => Failed to connect to 101.89.117.144 port 38022: Connection refused"
注会应该先考哪几门
