A: Hi, dou you know what time the Olympic Games will be hold in Beijing?B: It will be hold in Aug. 8th 2008. What's up?C: We are planning went to Beijing during the Olympic Games!B: Really? That's great! The Olympic will be hold during our summer vocation!,I think we have enough time to prepare what we can do for the Olympic! A、C: Of course!D: Hi, my dear friends, what are you talking?A: We are talking about something exciting , that is we will go to beijing in August to look the Olympic Games. D: Oh, I want to be there, too.A: Ok, if we all want to went to beijing, let's discuss what time should we book the ticket? and when shall we leave?C:Yes, right! I suggest that we should arrival Beijing one week before the Olympic Game start.B: Maybe one week were not enough...there will be a lot of pepole from all over the world in beijing during the Olympic! We should arrive to Beijing two weeks before the Game.D: Yes, I agree with you!A: Right, I am afraid that it will be difficult for us to find a hotel to rest. So we need to book the hotel as soon as possible!C: All right. I will try to contact the hotel. If I have any news I will inform you are as soon as possible!A、B、D: OK! 第三篇HOST: Life in the future will be really exciting. We may live on the moon or even another planet! Scientists are studying this right now. How? Well, let’s watch this story and find out! DOCUMENTARY This is Biosphere 2. Scientists built this place in the 1980s. They wanted to study the earth’s environment, and learn the best way to build a similar place on the moon and on the planet Mars. This is a model of Biosphere 2. It has different kinds of places, of biomes. There’s an ocean, a rain forest, a grassland, a marsh, a desert, a farmland, and a human habitat. Today, scientists use Biosphere 2 to study many different things, but not how to build a place to live in on the moon or on Mars. This is a model of Biosphere 2. It has different kinds of places, or biomes. There’s an ocean, a rain forest, a grassland, a marsh, a desert, a farmland, and a human habitat. Today, scientists use Biosphere 2 to study many different things, but not how to build a place o live in on the moon or on Mars. One important thing they are studying in Biosphere 2 is the change in climate, or weather. They want to learn why the climate is changing. And they want to learn how this affects the earth and everything that lives on the earth. Scientists say that in the future, people will have o make difficult choices about how they live on our planet. What kinds of choices do you think people will have to make?论