我是今天的值日生，今天我给大家介绍一篇短文，希望能给大家带来一些知识和乐趣。
Good morning, you guys. I'm on duty today. I'd like to share an article with you, and hope it will be amusing and of help to you.
大家好，今天是美好的一天，非常荣幸能在此做值日报告，我今天给大家讲一个笑话，笑话的题目是：好消息和坏消息。
Hello everyone, today is a good day, a very great pleasure in this report, and today I tell us a joke, joke topic is: good news and bad news.
大家好，今天是美好的一天，非常荣幸能在此做值日报告，我今天给大家讲一个笑话，笑话的题目是：好消息和坏消息。
Hello everyone, today is a good day, a very great pleasure in this report, and today I tell us a joke, joke topic is: good news and bad news.
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