string(247) "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%E7%9C%9F%E9%A2%98%E5%81%9A%E5%88%B0%E5%A4%9A%E5%B0%91%E5%88%86 => Failed to connect to 14.18.117.71 port 38069: Connection refused"
二建真题做到多少分
