string(249) "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%E8%80%83%E8%AF%95%E5%85%8D%E8%80%83%E5%93%AA%E5%87%A0%E7%A7%91 => Failed to connect to 101.89.117.144 port 38056: Connection refused"
注安考试免考哪几科
