string(243) "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%81%9A%E9%A2%98app%E5%93%AA%E4%B8%AA%E6%9B%B4%E5%A5%BD => Failed to connect to 101.89.159.206 port 38100: Connection refused"
注会做题app哪个更好
