M: What were you doing at twelve last night
W: I was playing cards with my kids in the kitchen.
M: Do your kids always go to bed that late
W: Not on weekdays.
M: Wasn’t your husband with you then
W: He was away on business in New York. He will be back late this evening.
M: Anything unusual happened
W: The light suddenly went out while we were playing. We remained silent at the table for some moments. After a while, we all heard glass breaking somewhere on the floor above.
M: Do you mean a window
W: I’m not sure whether it was a window or a glass or something else.
M: Didn’t any one of you hear a cry or a fight Didn’t you even consider going up for a look
W: We were frightened at the beginning and then went to bed as it was quiet all around.
M: What were you doing at twelve last night
W: I was playing cards with my kids in the kitchen.
M: Do your kids always go to bed that late
W: Not on weekdays.
M: Wasn’t your husband with you then
W: He was away on business in New York. He will be back late this evening.
M: Anything unusual happened
W: The light suddenly went out while we were playing. We remained silent at the table for some moments. After a while, we all heard glass breaking somewhere on the floor above.
M: Do you mean a window
W: I’m not sure whether it was a window or a glass or something else.
M: Didn’t any one of you hear a cry or a fight Didn’t you even consider going up for a look
W: We were frightened at the beginning and then went to bed as it was quiet all around.
[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.
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