老师：Welcome back everybody. Let's learn lesson 2 interesting contact ways. In this lesson we will learn some contact ways in the history through articles and express our ideas about this contact ways. Are you clear? Okay, let's begin. In the last lesson we Learned 8 different contact ways. Let's see more. Okay.
学生：A brief and somewhat accurate history of how we stay connected. Let's see if an important message can be delivered by different means of communication. Such as the smoke signal, the homing pigeon, the Pony Express, the semaphore flag, the Telegraph, the telephone, the radio, email, the smartphone.
老师：Okay, what contact waste did you see in the video? Yes, smoke signal.
学生：The smoke signal.
老师：Is an easy way to use in the past. And next we have pigeon and Pony Express. They are very helpful. Right. And what comes next? Do you remember? It's Santa 4. Follow me, stephore. semafor 打旗语 people use。
老师：Two flags to send messages. It's very interesting. Let's look again.
学生：The semaphore flag.
老师：And what comes next. Yes, the Telegraph. Do you know something about Telegraph? Telegraph machines only can receive and send Morse code. More STEMA. Look at the Morse coat. And this is my name. I write my name in the Morse code. You can do it too.
老师：It's really interesting, right? And here are some ways we've known a lot like telephone, email and smart cell. So from these pictures, we can see that contact ways have changed a lot from smoke signals to smartphone. So let's learn more about some of the contact ways. But before reading, I have a question for you. What contact ways I mentioned in the passage. Are you clear? Okay, let's listen.
学生：There are some interesting old ways to send messages. Some people use smoke to show they need help. Their friends can see the smoke and they know there is a problem, then they will go to help. Other people use birds to send messages. They take a bird from its home. They write a small message on some paper and put the paper on the bird's leg. Then the bird will fly back home with a message.
学生：Of course, there are many new ways to send messages today. Many people use the internet to send messages. The messages traveled around the world very quickly. People also send text messages on their phones. It's very fast too.
老师：So from this article we know that there are 4 ways to send messages. And can you give me the names? Great. The first one we have smoke. And what's next? Yes, birds. And can you give me the next one? Next two. Okay. Internet and flow. How about smoke? Amber? There are old ways for new ways. Yes, there are old ways and internet and the phone are the old ways to. No, there are new ways. But how do people use these ways to send messages? Let's read again and find out more details.
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