string(249) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E9%AB%98%E8%80%83%E7%BC%93%E8%A7%A3%E7%B4%A7%E5%BC%A0%E7%9A%84%E6%96%B9%E6%B3%95 => Failed to connect to 101.89.117.144 port 38017: Connection refused"
高考缓解紧张的方法
