Dear friends, do you like animals? Oh, yes, very much. Me, too. And you can call me animal fans. OK! Next, I will tell you something about animals. Be quiet! Follow me! The dolphins are coming. They are clever animals. They are usually not more than 3.3 meters long. They are living in many parts of the world, and they like living together. Dolphins can spend more than 6 minutes below the surface of the water without coming up for air. I think they are very friendly.
　　Can you think it over which animal is the most dangerous? Oh, they’re sharks. Sharks have been around for a very long time. Sometimes, sharks are also very interesting. For one thing, if a shark stops swimming, it will sink. Sometimes sharks eat people.
　　Oh, what a pity! The bell is ringing. I must go now. If you want to listen to me again, next time, I will tell you more about other animals, OK?