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听力原文:Let me warn you against a mistake that historians of science often make. They som

听力原文: Let me warn you against a mistake that historians of science often make. They sometimes assume that people in the past use the same concepts we do. Here is a wonderful example that makes the use of history of mathematics some while ago. It concerns an ancient Mesopotamian(美索不达米亚人) tablet that has some calculations on it using square numbers. The calculations look an awful one like the calculations of the link of the sides of triangle. So that's what many historians assume they were. But using square numbers to do this is a very sophisticated technique. If the Mesopotamians knew how to do it, as historians started thinking that they did. Well, they learn math with incredibly advanced. Well, it turns out the idea of Mesopotamians use square numbers to calculate the link of triangle's sides is probably wrong. Why? Because we discovered that Mesopotamians didn't know how to measure angles, which is a crucial element in the whole process of triangle calculations. Apparently the Mesopotamians had a number of other uses for square numbers. These other uses were important but they were not used with triangles. And so these tablets in all likelihood were practice sheets, if you like, for doing simpler math exercises with square numbers. In all likelihood, it was the ancient Greeks who first calculate the link of triangle's sides using square numbers. And this was hundreds of years after the Mesopotamians.

(47)

A.To explain how angles are measured.

B.To prove that Mesopotamiansdid not know how to use square numbers.

C.To discuss a mistaken historical interpretation.

D.To explain why tablets are reliable historical records.

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更多“听力原文:Let me warn you against a mistake that historians of science often make. They som”相关的问题

第1题

听力原文:A: Let me introduce my friend Jane to you.B: Nice to meet you, Jane. Who was intr

听力原文:A: Let me introduce my friend Jane to you.

B: Nice to meet you, Jane.

Who was introduced?

A.You.

B.I

C.Jane.

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第2题

听力原文:W: Peter is a quiet boy. He rarely says a thing.M: Well, let me tell you, his bro

听力原文:W: Peter is a quiet boy. He rarely says a thing.

M: Well, let me tell you, his brother Bob is just the opposite.

What kind of a person is Bob?

A.He is shy.

B.He is quiet.

C.He is talkative.

D.He is helpful.

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第3题

听力原文:W: Can you show me bow to do the new set of exercises?M: Of course. Let's start w

听力原文:W: Can you show me bow to do the new set of exercises?

M: Of course. Let's start with the first one.

What is the man doing?

A.He is helping the woman.

B.He is asking for help.

C.He is learning from the woman.

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第4题

听力原文:M: Let me give you some more fish.W: No, thank you. I prefer to have some vegetab

听力原文:M: Let me give you some more fish.

W: No, thank you. I prefer to have some vegetables.

What does the woman prefer to eat?

A.Have some fish.

B.Have some vegetables.

C.Have some pork.

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第5题

听力原文:W: Dear, I feel hungry now. How about you?M: So do I. Let me call the room servic

听力原文:W: Dear, I feel hungry now. How about you?

M: So do I. Let me call the room service. Hello, room service. Please send a menu to 826, thank you!

Where are the two speakers?

A.In a hotel.

B.At a dinner table.

C.In the street.

D.At the man's house.

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第6题

听力原文:M: Driving at night always makes me tired. Let's stop for dinner.W: Fine! And let

听力原文:M: Driving at night always makes me tired. Let's stop for dinner.

W: Fine! And let's find a motel, too.

M: Do you feel sleepy at such an early time?

W: Not really, but since we are both exhausted, we can get an early start tomorrow instead of continuing on.

What will the speakers probably do?

A.Drive on through the night.

B.Check out of the motel.

C.Cancel their motel reservations.

D.Stop driving for the rest of the day.

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第7题

听力原文:W: These steel chairs are on sale for $ 85 each or $150 for a pair. How many woul
d you like to have?

M: Let me have a look. Oh, good! I think I'd like to have two.

How much will the woman pay for the chairs?

A.$150.

B.$85.

C.$115.

D.$170.

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第8题

听力原文:M: Well, what do you think of the movie?W: I don't know why I let you talk me int

听力原文:M: Well, what do you think of the movie?

W: I don't know why I let you talk me into going. I just don't like violence.

M: I didn't realize there would be quite so much. Despite everything, though, the story was good.

W: Yes, it was very exciting and well written.

Why does the woman object to the movie?

A.Because it was too long.

B.Because it was boring

C.Because it was violent.

D.Because the story was not good.

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第9题

听力原文:W: I am sorry, but I can't find the book you lent me.M: That's OK.W: I really fee

听力原文:W: I am sorry, but I can't find the book you lent me.

M: That's OK.

W: I really feel bad about it. Let me buy you a new one.

M: No. Don't be silly. I wouldn't dream of letting you do that.

What is the woman doing?

A.Complaining.

B.Apologizing.

C.Explaining.

D.Crying.

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第10题

听力原文:W: Can't you come in and have tea now, Peter?M: I' d like to. But I must water th

听力原文:W: Can't you come in and have tea now, Peter?

M: I' d like to. But I must water the garden first.

W: Let me give you a hand.

What are they going to do first?

A.Come into the room.

B.Water the garden.

C.Drink some water.

D.Have some tea.

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