string(285) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%B8%80%E5%BB%BA%E6%95%99%E6%9D%90%E4%BB%80%E4%B9%88%E6%97%B6%E5%80%99%E5%8F%91%E5%B8%83%E5%87%BA%E6%9D%A5%E7%9A%84 => Failed to connect to 101.89.117.144 port 38017: Connection refused"
一建教材什么时候发布出来的
