4. An extraterrestrials might have wanted to destroy the earth, so they aimed their weapons at Earth and set fire to the forest.
5. A scientific experiment: Another idea is that scientists made a mistake during an experiment with electricity. A man named Nikola Tesla tried to build a “supergun” that used electricity. Maybe it was a test of his gun and it didn’t work correctly. Optional Listening 4
Q. Where is Marfa and what exactly is it famous for?
A. Marfa is a small town in west Texas in the United States. It’s famous for the “Marfa mystery lights”
Q. What are the mystery lights exactly?
A. No one knows for sure. There are many different ideas about that. Q. Can you describe them?
A. That’s a difficult question. Different people see different lights. They are not always the same. I can say that they appear after sunset in the sky. They dance mysteriously in air and vanish. Then they suddenly reappear. Q. Some people say they are car headlights. Do you think so?
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A. No. I don’t. A man first saw the mystery lights over 100 years ago. The man was Robert Ellison and the year was 1883. Of course we didn’t have cars in 1883.
Q. What do you think causes the lights?
A. There are many theories. The Native Americans thought the lights were stars falling to Earth. Some people think uranium gas causes the lights. Other people suggest that ball lightning does it. Ball lightning is lightning in the shape of circle. It often appears just after a rainstorm. Q What are some of the weirdest ideas about the lights?
A. Well, some people call them “ghost lights”. They think ghosts do it. That’s the strangest idea. Some say they are UFOs. I don’t think so. Q. What do the experts say?
A. They can’t figure it out. Some engineers even came from Japan one time. They studied the lights, but couldn’t solve the mystery. Q. Are the local people scared?
A. No, actually, they aren’t. They like the lights. And every year in early September there is a big town festival to celebrate the mystery lights. Keys
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OL1: A. 从左至右：4-5-1-2-3 B. Nick Brown, police officer, local people OL 2:
A. 1. A young girl standing in the middle of the road; 2. Because it was raining heavily
3. He stopped the car quickly; 4. She said “I’m fine.” and walked away quietly.
5. He said the girl was Mary Anne and was killed in a car accident five years ago.
B. heavily; clearly; slowly; neatly; quickly; strangely; happily; quietly; Nervously; calmly; OL3
A. 1. A terrible explosion; 2. In eastern Russian; 3. June 30, 1968. B. (first row) 4, 1, 3 (second row) 5, 2
C. 1. a part of it broke off 2. lots of damage 3. its engine exploded 4. used electricity 5. set fire to the forest OL 4
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A. 2. a 3. h 4. d 5. g 6. e 7. b 8. c
B. 1. different people see different lights 2. Robert Ellison saw the lights in 1883.
3. The Native Americans thought the light were stars failing to the Earth 4. A team from Japan studied the lights, but couldn’t solve the mystery. OL 5 1. solve; 2. it’s very likely; 3. stole; 4. apartment; 5. showing; 6. has an alibi; 7. it isn’t true; 8. walks in; 9. take out; 10. thief. Unit 6, Book 2 Optional Listening 1 Conversation 1
Woman: Morning, Simon. Wow, you look tired.
Man: Oh, I didn’t sleep very well last night. I had a weird dream. I was in a classroom at school, but I didn’t have any clothes on. No one looked at me, but I was really embarrassed. Conversation 2
Woman: Jesse, Jesse, Wake up. You’re having a nightmare.
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Male child: Oh, what a terrible dream. I dreamed I was on a dark street. Suddenly, there was a large dog behind me. It ran toward me, but I couldn’t move.
Woman: Don’t worry, Jesse. It was only a dream. Go back to sleep. Conversation 3 Man1: Morning Tim.
Man2: Morning. Hey, I had an amazing dream last night. I was on a beautiful boat. The sun was warm and the ocean was really blue. I jumped into the water, and I began to swam with the fish. The thing is, I can’t swim. But in the dream, I could. It was pretty cool. Optional Listening 2
I had an amazing dream last night. I was standing outside of an strange big house. The house was painted pink, a very rare color for a house. It had a lot of big windows, either round or rectangular. The house had large square pillars and twisted columns. I was thinking there must be a big living room, several bedrooms, a kitchen, and a guest room in such a big house. I was wondering whose house this was when I suddenly heard a voice from somewhere: “My lord, welcome home.” Wow, this was my dream house.
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