[听力原文]
W: OK, last night you were supposed to read an article about human bones. Are there any comments about it
M: Well, to begin with, I was surprised to find out there was so much going on in bones. I always assumed they were pretty lifeless.
W: Well, that’s an assumption many people make. But the fact is bones are made of dynamic living tissue that requires continuous maintenance and repair.
M: Right. That’s one of the things I found so fascinating about the article the way the bones repair themselves.
W: OK. So can you tell us how the bones repair themselves
M: Sure. See, there are two groups of different types of specialized ceils in the bone that work together to do it. The first group goes to an area of the bone that needs repair. This group of cells produces the chemical that actually breaks down the bone tissue, and leaves a hole in it. After that the second group of specialized cells comes and produces the n
A. Two different types of bones in the human body.
B. How bones help the body move.
C. How bones continuously repair themselves.
D. The chemical composition of human bones.
[听力原文]
W: OK, last night you were supposed to read an article about human bones. Are there any comments about it
M: Well, to begin with, I was surprised to find out there was so much going on in bones. I always assumed they were pretty lifeless.
W: Well, that’s an assumption many people make. But the fact is bones are made of dynamic living tissue that requires continuous maintenance and repair.
M: Right. That’s one of the things I found so fascinating about the article the way the bones repair themselves.
W: OK. So can you tell us how the bones repair themselves
M: Sure. See, there are two groups of different types of specialized ceils in the bone that work together to do it. The first group goes to an area of the bone that needs repair. This group of cells produces the chemical that actually breaks down the bone tissue, and leaves a hole in it. After that the second group of specialized cells comes and produces the n
A. They defend the bone against viruses.
B. They prevent oxygen from entering the bone.
C. They break down bone tissue.
D. They connect the bone to muscle tissue.
[听力原文]
M: Nancy, why were you late for class this morning
W: I overslept and missed the bus.
[听力原文]
M: If I were you, I would study for four hours every night in order to improve my English.
W:Well, you see, I haven’t got that much time to spare.
[听力原文]
M: If I were you, I would take a plane instead of a bus. It will take you a whole day to get there.
W: But fly in makes me so nervous.
[听力原文]
M: If I were you I’ d live in the city instead of going to work by train.
W: But the countryside is so beautiful in spring and fall.
[听力原文]
M: You look tired. Where did you go last night
W: I planned to watch a film, but I went to meet my friend at the airport.
[听力原文]
W: John, how are you I heard you were sick.
M: They must have confused me with somebody else. I’ve never felt upset.
[听力原文]
W: You were absent from class yesterday, Jack.
M: I’m terribly sorry I couldn’t come. I had a headache.
[听力原文]
W: You were absent from work yesterday, Brown.
M: I’ m terribly sorry I couldn’ t come. I had a head ache.
[听力原文]
M: I saw the movie you were talking about. It was a waste of time.
W: Really I liked it very much. I think it’s one of the best movies of the year.
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