string(239) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%B3%A8%E4%BC%9A%E5%88%B7%E7%9C%9F%E9%A2%98%E6%9C%89%E7%94%A8%E5%90%97 => Failed to connect to 101.89.120.29 port 38104: Connection refused"
注会刷真题有用吗
