老师：Hello, boys, girls. Welcome back to the last lesson of this unit, protected the earth. It will be about revision and extension. In this lesson, you are going to challenge yourself. First, we are going to play a word game. Then we are going to enjoy and learn a song. Lastly, we will watch a video and learn something about it.
老师：Now, are you ready to play the word game? I'm gonna show you some sentences. They talk about one thing. Can you guess what it is? Now, let's go. It's necessary for people. Plants and animals can live without it. It gets dirty when make other things clean. So it is right the water, it's black. It lives under the earth or ocean. We use it to run cars. Oh, very good. It's usually hard. There are circles on it to tell time. And people use it to make tables, chairs and many furnitures. It's wood. Do you get it? It looks like an umbrella. It takes in carbon dioxide and gives out oxygen. Usually changes colors with seasons. It's the tree. It's a blue planet. It moves around the sun. It gives home to all living creatures. What is it? The earth. Very good. It comes in many colors, but we call it white pollution. It's very useful for people, but bad for the earth. So it is the plastic. Good job. Have you got all of them? Now, here are the sentences. You can choose the part that you are most interested in and read by yourself.
老师：Let's enjoy a song. Look at the title. What's the sound? Going green. Very good. What is it about? Can you find it from the picture? It's about taking care of our planet. Very good. Now let's listen to the sun.
学生：We're going green. We're going to take care of the earth. With the Wing Queen, you can go green at your home or school. Reduce, reuse and recycle.
学生：Be careful how long you take a shower. You don't need to stand there for 70 hours. Turn off the water when you're brushing your teeth and only use the necessary energy. Turn off the lights when they're not in use. Think of much electricity you produce. Take quick drinks, walk to school. Reducing energy is really cool. Out plugs when you're not using them. Turn off the computer every now and then. Go away later. Pick up trash.
学生：And you'll save the earth in a flash. We're going green. We're going green. We're going to take care of the earth. We're going green. You can go green at your home or school. Reduce, reuse and recycle. 3.
学生：Reuse stuff when you're out and about. If you can use it again, don't throw it out. Reuse fire bottles, reuse bags, reuse containers and reuse rags. Donate toys to someone else can use them. Donate clothes. That was just.
学生：We're going green. We're going to take care of the earth. We're going green. You can go green at your home or school. Reduce, reuse and recycle.
学生：Just throwing away is not eating up
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