string(274) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%B8%80%E9%80%A0%E5%8E%86%E5%B9%B4%E7%9C%9F%E9%A2%98%E9%83%BD%E6%90%9E%E5%AE%9A%E8%83%BD%E8%BF%87%E5%90%97 => Failed to connect to 14.18.117.71 port 38164: Connection refused"
一造历年真题都搞定能过吗
