Int: We've heard that too. Is that really happening?
D.U: Yes, I'm afraid it is. And at sometime in the future, the ice may melt completely. Then it's Possible that the sea could rise and coastal cities like New York and Shanghai could disappear under water.
Int: It sounds very frightening.
D.U: I couldn't agree with you more. It's scary!
Int: Can you explain why the climate's getting warmer?
D.U: Well, I'll do my best! It's pollution that's the problem. Gases from cars enter the atmosphere and stop the sun's heat from leaving the atmosphere. And factories give out chemicals that do the same thing. So as a result, the climate is getting warmer.
Int: From what I understand, carbon dioxide from cars is a major problem.
D.U: You're absolutely right. Carbon dioxide is the gas that does most damage to the atmosphere. But we have a problem with trees too. You see, trees give out oxygen and take in carbon dioxide. So they're very useful because they use up the carbon dioxide.
Int: I know what you're going to say. We're cutting down all the trees.
D.U: Yes, we cut them down because we need the land and because we use the wood for paper and furniture. That leaves more carbon dioxide in the atmosphere.
Int: It's a terrible situation.
D.U: Yes, and another problem is all the garbage that we produce. We burn a lot of garbage, and once again, the gases pollute the atmosphere. The situation couldn't be worse, really.
Int: We should recycle garbage, not burn it.
D.U: Of course we should.
Int: It's strange, we know all this, and yet we do nothing but talk about it. I can't help but feel very concerned.
D.U: Yes, well, it is worrying. But governments are beginning to do something about it. I don't think it's too late.
Module 5 听力原文
China has given the world many important inventions. To give an example, it is the country in which silk was first invented. Silk was made there as long ago as 3200 BC. Chinese farmers grew mulberry leaves because they knew that a certain kind of caterpillar ate them. The Chinese did not tell other countries how silk was made and other countries how silk was made and other countries paid a lot for this soft, strong material.
Su Song was an eleventh century monk about whom very little is know. However, we do know that in 1092 AD he invented the first real clock. For the first time ever, it became possible to tell the time. In the 1950s a copy was built and this copy can be seen today in Beijing.
They say that a man called Cai Lun made paper from the bark of a tree in about 105 AD. If so, he is a man of whom China can be proud. Paper was a very important invention because it was cheap and people could afford to buy it. Before that time, writers had used expensive materials such as silk. The invention was immediately successful. However, paper did not spread to other countries for another 500 years.
Printing was invented in China as early as 868 AD. The book in which printing first appeared was called The Diamond Sutra. With printing, it became possible t produce many copies at the same time. In 1041 AD, a chemist called Bi Sheng invented a type of print that could move. It was not until 1454 that the first book was printed in Europe.
The first time that we hear of a real toothbrush is in a Chinese book of 1498 AD. This toothbrush could clean teeth quickly and well. The toothbrush only reached Europe in the seventeenth century, when it quickly became very popular.
Module 6 听力原文
1
M: What are you looking for?
W: A map of China.
M: I've got a book here that has lots of maps of China. It's called Maps of the World. Which place
are you looking for?
W: I'm trying to find the Three Gorges Dam.
M: Is it a big dam?
W: Big-it's absolutely enormous!
2
M: I saw a film on TV about a dam last night.
W: Really? Which one? The Three Gorges Dam?
M: No. The film I saw wasn't about the Three Gorges Dam.
W: Wasn't it?
M: No. It was another dam. It was in Egypt.
W: Was it an interesting film?
M: Interesting? It was absolutely fascinating!
3
W: We visited the Three Gorges Dam in December.
M: Really? How did you get there?
W: We took a boat that went up the Yangtze River.
M: Was it a nice trip?
W: Nice? It was absolutely wonderful!
4
W: What are you doing?
M: I'm writing an email to some people I met on the boat.
W: Where are they from?
M: Vietnam. They were on a visit organised by the government.
W: How many of them were there?
M: Well, I spoke to a man who said there were 25 in the group.
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