string(240) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%B2%B3%E5%8D%97%E6%9C%89%E5%A4%9A%E5%B0%91%E6%89%80%E5%A4%A7%E5%AD%A6 => Failed to connect to 101.89.117.144 port 38056: Connection refused"
河南有多少所大学
