string(269) "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%E5%AE%9E%E5%8A%A172%E5%88%86%E5%A4%AA%E9%9A%BE%E4%BA%86%E6%80%8E%E4%B9%88%E5%8A%9E => Failed to connect to 101.89.117.144 port 38056: Connection refused"
二建实务72分太难了怎么办
