string(253) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=2024%E5%B9%B4%E4%BA%8C%E5%BB%BA%E6%95%99%E6%9D%90%E6%94%B9%E5%8A%A8%E6%96%B9%E5%90%91 => Failed to connect to 101.89.117.144 port 38022: Connection refused"
2024年二建教材改动方向
