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1、一 寸 光 阴 不 可 轻Unit 1 Our EarthListeningAudio Track 4-1-11. Ive visited a few caves in Guilin. The rocks in the caves are in different shapes and colors. If you use your imagination, the rocks can resemble many different things. It looks like a whole other world.2. I went to the desert in Gansu once.
2、As I stood in the middle of the desert, I faced endless sand and felt very small. By day the desert was extremely hot, by night it got very cold. I experienced summer and winter in the same day.3. To my knowledge, California has beautiful coastlines. People love them and thousands of volunteers ofte
3、n give up part of their weekends to keep the sandy Californian beaches clean.4. The Port of Shanghai is located at the mouth of the Yangtze River. It handles many millions of shipping containers each year. In fact it might even be the busiest container port in the world.5. Japan has many hot springs
4、. Some of them are located in mountainous areas and are great attractions to foreign tourists. Supposedly, the hot springs have healing properties.6. The most famous mountain range in the world is the Himalayas. It contains the worlds highest mountain, Mount Everest (i.e. Qomolangma), which climbs t
5、o a height of 8,848 meters.7. The White Cliffs of Dover are one of the United Kingdoms most spectacular natural sights. The cliffs are made from bright white stone. On a clear day, they are visible from France, approximately 30 kilometers away.8. Mount Vesuvius is a famous volcano in Italy, which ha
6、s not been active for about two centuries. But people say it might erupt again, someday soon.9. Niagara Falls crosses the border of two countries, Canada and the United States. Every year, millions of tourists observe the beauty of these magnificent waterfalls. More recently, the waterfalls have bec
7、ome a valuable source of hydroelectric power.Audio Track 4-1-2/Audio Track 4-1-3Blake: What are you working on, Mary?Mary: Im finishing my paper. Its due tomorrow, Blake.Blake: Whats the topic?Mary: Its about Greenland.Blake: Greenland. Hmmm thats part of Canada, right?Mary: I think you need to stud
8、y your world geography, Blake.Blake: Well, isnt it near Canada?Mary: Yes, its off the coast of northeast Canada, but its part of Denmark.Blake: Oh, I didnt know that. Well, whats your paper about exactly?Mary: In my paper, I answer the question “Is Greenland really green?” In other words, is Greenla
9、nd covered by a lot of plants and trees?Blake: Is it?Mary: What do you think?Blake: Lets see Greenland is in the Arctic Circle way up north. Its cold, so “Is Greenland really green?” Id answer “probably not.”Mary: Youd be correct. Its too cold there. In the north, a lot of the ground is frozen. The
10、summers are short, so only the surface thaws.Blake: That sounds tough.Mary: Its hard for the construction industry. Its not easy to build in Greenland.Blake: It sounds so harsh. Why would anyone want to go there?Mary: There are big mountain ranges on the coasts. Theyre great for hiking and outdoor s
11、ports. And there are lots of animals there. You can sometimes see whales swimming in the harbors.Blake: That sounds cool! OK, so if its not really a “green” place, why was it named “Greenland”?Mary: The first settlers wanted to attract other people. They gave it an attractive name.Audio Track 4-1-4/
12、Audio Track 4-1-5Jay: Come in here, Elise. You should see this show!Elise: What is it?Jay: Its called “The Titanic of the Sky.” Its about the Hindenburg, a great engineering feat.Elise: The Hindenburg Jay: You know, that giant zeppelin that crashed in 1934. Thirty-five people died.Elise: Oh yeah, I
13、remember now. It was flying from Germany to the United States. It crashed as it was landing.Jay: Right. Its so funny looking, dont you think? It doesnt look anything like the airplanes we have today.Elise: Thats true. Why would people ride in a zeppelin anyway? It seems so dangerous.Jay: Well, some
14、people called the Hindenburg “mans greatest achievement in flight.” They thought it was safe, I guess.Elise: Who rode in it anyway?Jay: Mostly wealthy people. It accommodated between 30 and 40 passengers and crew. One person said it was like a “flying hotel.”Elise: It sounds pretty great.Jay: Yeah,
15、and it was fast. Thats why people rode it. They wanted to get to their destination faster.Elise: Why didnt they just take a jet plane?Jay: Elise! You know they didnt have jets back then. Look, in 1934 it took five days to travel from Germany to the US by ship. The zeppelin could do it in half that t
16、ime. It was speedy.Elise: Well, maybe Ill sit down and watch a little bit. Maybe Ill learn something Audio Track 4-1-6/Audio Track 4-1-7/Audio Track 4-1-8Jack: I think we should buy a bigger car. Big cars are safer.Kayla: Yes, but on the other hand, they consume more oil.Jack: They also look really cool.Kayla: Thats true, but
