string(244) "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%E7%BB%8F%E6%B5%8E%E7%AD%94%E6%A1%882021%E7%9C%9F%E9%A2%98 => Failed to connect to 125.88.227.171 port 38114: Connection refused"
一建经济答案2021真题
