string(244) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=2021%E4%B8%AD%E7%BA%A7%E8%B4%A2%E7%AE%A1%E9%A2%98%E9%87%8F%E5%A5%BD%E5%A4%A7 => Failed to connect to 101.89.117.144 port 38017: Connection refused"
2021中级财管题量好大
