string(267) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%BA%8C%E5%BB%BA%E8%80%83%E8%AF%95%E9%A2%98%E9%83%BD%E6%98%AF%E4%B8%80%E6%A0%B7%E7%9A%84%E5%90%97 => Failed to connect to 125.88.227.171 port 38062: Connection refused"
二建考试题都是一样的吗
