string(278) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=2020%E4%B8%8A%E6%B5%B7%E4%BA%8C%E5%BB%BA%E8%80%83%E8%AF%95%E6%98%AF%E4%B8%8D%E6%98%AF%E4%B8%8D%E8%80%83%E4%BA%86 => Failed to connect to 14.18.117.71 port 38093: Connection refused"
2020上海二建考试是不是不考了
