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45 We know less about the astronomical universe than we do about any social system because

______.

A.theories of its origin and history are varied

B.our knowledge of it is highly insecure

C.only a very small sample of it has been observed

D.few scientists are involved in the study of astronomy

提问人:网友jxh2003zfr 发布时间:2022-01-07
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更多“45 We know less about the astr…”相关的问题
第1题
If we were asked exactly what we were doing a year ago, we should probably have to say that we could not remember. But if we had kept a book and had written on it an aceount(记录) of what we did each day, we should be able to give an answer to the question.

It is the same in history. Many things have been forgotten because we do not have any written account of them. Sometimes people did keep a record of the most important happenings in their country, but often it was destroyed by fire or in a war. Sometimes there was never written record at all because the people of that time and place did not know how to write. For example, we know a good deal about the people who lived in China 4000 years ago, because they could write and leave written records for those who lived after them. But we know almost nothing about the people who lived even 200 years ago in central Africa, because they had not learned to write.

Sometimes, of course, even if the people can not write, they may know something of the past. For most people can tell proudly what their fathers did in the past. This we may call "remembered history". Some of it has now been written down. It is not so exact or so valuable to us as written history is, because words are much more easily changed when used again and again in speech than when copied in writing. But where there are no written re- cords, such spoken stories are often very helpful.

Which of the following ideas is not mentioned in the passage?

A.Remembered history, compared with written history, is less reliable.

B.Written records of the past play a most important role in our learning of the human history.

C.A written account of our daily. activities helps us to be able to answer any questions.

D.Where there are no written records, there is no history.

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第2题
She still feels rather _____________ (sick, weak, sad) now.
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第3题
The ancient Greeks developed basic memory systems called Mnemonics. The name is (1) from their G
 The ancient Greeks developed basic memory systems called Mnemonics. The name is(1)from their Goddess of Memory, Mnemosene. In the ancient world, a trained memory was an(2)asset, particularly in public life. There were no(3)devices for taking notes and early Greek orators (演说家) delivered long speeches with great(4)because they learned the speeches using Mnemonic systems.

  The Greeks discovered that human memory is(5)an associative process—that it works by linking things together. For example, think of an apple. The(6)your brain registers the word "apple", it(7)the shape, colour, taste, smell and(8)of that fruit. All these things are associated in your memory with the word "apple".

  (9). An example could be when you think about a lecture you have had. This could trigger a memory about what you were talking about through that lecture, which can then trigger another memory.

  (10). An example given on a website I was looking at follows: Do you remember the shape of Austria, Canada, Belgium or Germany? Probably not. What about Italy, though?(11)You made an association with something already known, the shape of a boot, and Italy's shape could not be forgotten once you had made the association.

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第4题
"Machinery" in the third paragraph refers to______.

A.machines

B.elements

C.systems

D.devices

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第5题

听力原文: Good evening, welcome to the first meeting of our spring cycling season. It's a pleasure to see so many new faces here. I certainly hope that most of you will soon feel right at home with our group and bicycling will be a regular hobby for you and a part of your physical routine. Some of you may not realize that the State of New Jersey offers ample opportunities for bicyclists of all abilities. We've rolling countryside, miles of beaches, lovely hills and mountains and valleys and thousands of miles of roads. Beginners will find the shore suitable for their needs while expert riders will find that the steep trails of the region offer a challenge to their skill. In addition, New Jersey is rich in historical interest. The state abounds in colonial architecture, battlefields of the revolution and other historic sites important in the early history of the country, most are carefully preserved and restored. We organize tours to a variety of places nearly every weekend. Next Saturday's tour will relatively be a easy one. Interested cyclists will meet at 8 a. m. in the parking lot at the corner of Hamilton Street and College Avenue. The minimum time of this tour is about six hours. Each new rider must team up with an experienced rider. You can pick up a map of Saturday's tour at the information table before you leave this evening.

What is the purpose of the talk?

A.To encourage people to participate in a club activity.

B.To introduce a new kind of bicycle.

C.To inform. the beginning cyclists about New Jersey's traffic law.

D.To warn tourists about bicycling on the roadways.

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第6题
PART C

Directions: You will hear three dialogues or monologues. Before listening to each one, you will have 5 seconds to read each of the questions which accompany it. While listening, answer each question by choosing A, B, C or D. After listening, you will have 10 seconds to check your answer to each question. You will hear each piece ONLY ONCE.

听力原文: Little by little, Americans are turning to solar power, tapping the strength of the sun for energy.

Solar energy is only in its infancy, however, sunlight has already been used for heating or cooling homes and office buildings in the sunny south. Experts say all signs point to the birth of the solar energy industry. Right now, an increasing number of companies are selling solar collector panels to heat and cool homes or to heat water. The glass and metal panels cost from $ 100 to more than $ 500 each, and the three or four bedroom homes usually require a dozen or more. They look like sandwiches, or very narrow flower boxes, 3 to 6 feet in width, 8 to 10 feet long, and 4 to 8 inches thick. They are usually placed in rooftops. Nobody knows how many have been sold, and in addition, many people have built their own units. It has been estimated that solar power equipment will be a $ 1.3 billion industry by 1995, and more a million homes will use sunlight for heat, air conditioning or to generate electricity, both in the cities and in countryside.

What do we learn about the use of solar energy in the USA?

A.It is very well established.

B.It is relatively new.

C.It is found in one million homes.

D.It is being rapidly expanded.

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第7题
听力原文:W: Mr. Hudson, where were you born and raised?

M: I was born in Chicago, but I didn't live there any more. I was raised in Washington, grew up there until I went to college in New York and then Harvard.

W: Looking back. How did you think your parents shaped your character?

M: Well, it's hard to estimate entirely. I was quite fond of my parents and considered them very good people. My mother was a kind of very feminist and a well-known Jewish poet. She became internationally known. My father was a lawyer. And though it's hard to say how much they influenced me, I liked them, I respected them and I'm sure I was influenced to some degree by them.

W: You were educated in the public schools?

M; We moved almost every year, so I went to a different public school each year.

W: So you would have been in high school and what years... approximately?

M: Oh, I was in high school when... 26 or 27? I forgot. I graduated from high school in 32.

W; What did you study in university?

M: Well, that's a difficult question. I started out thinking I'd be an economist, and then I got disappointed with that. And after an odd experience in my junior year, I decided that I'd go out and study agriculture or management, but I enrolled in both for a whole year and tried to learn the required courses. I lasted a year, and then I came back to the main campus and finished up as an economics major specializing in labor economics.

W: Did you go right graduate school or join the army after you graduated from the university?

M: Well, I went to Harvard as a graduate student in philosophy in 1936, and stayed there until the war broke out. I was drafted after I took my PhD exams in the early part of 1941. So I went into the army before Pearl Harbor.

Questions:

17. Where did Mr. Hudson grow up?

18. Mr. Hudson's mother was a famous______.

19. What did Mr. Hudson eventually major in for his bachelor's degree?

20. When did Mr. Hudson join the army?

(17)

A.New York.

B.Chicago.

C.Harvard.

D.Washington.

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第8题
It was claimed that the new laws passed during the Roosevelt Administration were aimed at______

A.reducing the cost of farming.

B.conserving soil in the long-term interest of the nation.

C.lowering the burden of farmers.

D.helping farmers without shifting the burden onto other taxpayers.

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第9题
What is the main idea of the passage?A.American firms are different from Japanese and Germ
What is the main idea of the passage?

A.American firms are different from Japanese and German firms in human resource management.

B.Extensive retraining is indispensable to effective human resource management.

C.The head of human resource management must be in the central position in a firm's hierarchy.

D.The human resource management strategies of American firms affect their competitive capacity.

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