string(249) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%B8%AD%E6%B3%A8%E5%8D%8F%E5%8E%86%E5%B9%B4%E8%AF%95%E9%A2%98%E6%B1%87%E7%BC%96 => Failed to connect to 101.89.117.144 port 38208: Connection refused"
中注协历年试题汇编
