A new study says one part of the human brain may become smaller as the result of a condition known as jet lag. Jet lag results from flying long distances in an airplane. Jet lag interferes with a person's normal times for sleeping and waking. People with jet lag may feel extremely tired for several days. They also may have problems thinking clearly and remembering.
Kwangwook Cho is a researcher at the University of Bristol in Britain. He reported the findings of his jet lag study in the publication Nature Neuroscience.
The study involved twenty young women who worked for international airlines. The women had served passengers on airplanes for five years. These flight attendants flew across many countries and at least seven time zones. In the study, the flight attendants had different amounts of time to recover from jet lag. Half the women spent five days or fewer in their home areas between long flights. The other half spent more than fourteen days in their home areas.
Mister Cho took some fluid from the women's mouths to measure levels of a hormone that increases during stress. He tested them to see if they could remember where black spots appeared on a computer screen. And he took pictures of their brains using magnetic resonance imaging. This is a way to measure the size of the brain's temporal lobes（颞叶）.
It was found that the women who had less time between flights had smaller right temporal lobes. This area of the brain deals with recognizing and remembering what is seen. The same group performed worse and had slower reaction times on the visual memory test. And their saliva samples showed higher levels of stress hormones.
Mister Cho says he believes the brain needs at least ten days to recover after a long trip. He says airline workers told him their ability to remember got worse after working on planes for about four years. Other studies have shown that increased feelings of stress can cause a loss of cells in the part of the brain that controls memory.
Scientists say more tests are needed to study the effects of jet lag on the brain. They want to find out if too much jet lag could permanently affect memory.
72. According to the text, jet lag _____.
A. can cause difficulties in speaking
B. can make people feel tired for a few weeks
C. is the illness only found in people who work on the airplanes
D. can be caused by flying over several time zones in an airplane
73. It is inferred that more tests need to be done because _____.
A. the conclusion was questioned by many scientists
B. scientists fear that his research is not done properly
C. every scientific conclusion needs the support from many tests
D. the woman who were studied in the research were not healthy
74. Which of the following statements is TRUE about the research results?
A. Women who have a longer rest at home show better memory.
B. Women who fly in short time had smaller right temporal lobes.
C. Women who have longer flights failed the memory test.
D. Women who rest more than 14 days produced less hormones.
75. What is the subject discussed in the test?
A. The cause of jet lag.
B. A story of a group of flight attendance.
C. A research about the effects of jet lag on the brain.
D. The importance of having enough rest after long flights.
.
It was a quarter past nine as Marie hurried into the office building where she would be working. Her bus had inched along through heavy morning traffic, making her a few minutes late for her very first job. She decided she would start out half an hour earlier the next day. Once inside the building, she had to stand at the lifts and wait several minutes before one arrived. When she finally reached the office marked "King Enterprises," she knocked at the door nervously and waited. There was no answer. She tapped on the door again, but still there was no reply. From inside the next office, she could hear the sound of voices, so she opened the door and went in. Although she was sure it was the same office she had been in two weeks before when she had had the interview with Mr. King, it looked quite different now. In fact, it hardly looked like an office at all. The employees were just standing around chatting and smoking. At the far end of the room, somebody must have just told a good joke, she thought, because there was a loud burst of laughter as she came in. For a moment she had thought they were laughing at her. Then one of the men looked at his watch, clapped his hands and said something to the others. Quickly they all went to their desks and, in a matter of seconds, everyone was hard at work. No one paid any mind to Marie. Finally she went up to the man who was sitting at the desk nearest to the door and explained that this was her first day in the office. Hardly looking up from his work, he told her to have a seat and wait for Mr. King, who would arrive at any moment. Then Marie realized that the day's work in the office began just before Mr. King arrived. Later she found out that he lived in Connecticut and came into Manhattan on the same train every morning, arriving in the office at 9:35, so that his staff knew exactly when to start working.
1. Marie felt nervous when she knocked at the door because _______.
A. she had never met the boss once before
B. she was a little bit late for work
C. she was afraid that she had gone to the wrong place
D. there was no answer from inside the office
2. Marie could hardly recognize the office she went into as _______.
A. she had been there only once
B. Mr. King was not in the office
C. nobody was doing any work
D. the office had a new appearance
3. The people in the office suddenly started working because _______.
A. they saw a stranger in the office
B. they had finished their morning break
C. no one wanted to talk to Marie
D. the boss was about to arrive
4. We can infer from the passage that the employees of the enterprise
_______.
A. would start their work day by listening to a joke
B. were considerate to newcomers
C. were always punctual for work
D. lacked devotion to the company
5 . What is probably the best title for the passage?
A. Punctual Like a Clock
B. A Cold Welcome
C. An Unpunctual Manager
D. Better Late Than Never
.
When New York City was not very big, there was a market on the East River. On market day all the farmers came there to sell their vegetable, butter and eggs, and fruit. They laughed and talked together, so no one could hear the river that ran beside them.
But Hans ,the butterman , sat without a smile. He sold pounds of butter from a table beside him. Many people said that his butter wasn’t the right weight. They said that his rolls of butter didn’t weigh as much as a pound.
Once the weighmaster came walking down the road. He was looking for people who did not sell the full weight. Someone told him, ”Watch Hans, the butterman.”
Hans had good eyes. He saw the weighmaster and quickly put the piece of gold into the first roll of butter, between the butter and its cover.
A captain was standing beside Hans’s table, and he had seen Hans put the piece of gold into the roll. He stood at Hans’s side when the weighmaster came up to him.
“Good morning,” said the weighmaster.
“Good morning,” said Hans. “I think that you are looking for farmers who trick the people of our town.
“I’m,” said the weighmaster. “Someone told me that your rolls of butter don’t weigh a full pound.”
“Oh yes, they do. Here, Weighmaster. Here is a roll of butter. Weigh it yourself,” said Hans.
Hans took the first roll of butter and gave it to the weighmaster.
The weighmaster took his scales and put the butter onto it. The roll weighed more than a pound.
“I’ve made a mistake,” said the weighmaster. “You are an honest man. There is enough butter in this roll.”
Then the captain stood in front of Hans’s table. “You are an honest man, so I want to buy some of your butter,” he said. Before Hans could speak, the captain picked up the roll of butter with the piece of gold in it. “I’ll take this one.”
Hans’s heart began beating more quickly. “No, not that one. I’ve sold that one to a friend of mine. Take another one.”
“No, I want this one,” said the captain.
“I won’t sell it to you. I told you that I’ve sold it to a friend,” said Hans.
“Don’t make me angry. The weighmaster weighed this roll. Give your friend another one.”
“But I want to give him this one,” said Hans, who was now very uncomfortable.
“I ask you, good Weighmaster,” said the captain angrily, “don’t I have the right to choose the piece of butter that I want? I will pay good money for it.”
“Of course you have the right, Captain,” said the weighmaster. “What are you afraid of, Hans? Aren’t all the rolls of butter alike? Perhaps I have to weigh all of them.”
What could Hans say? What could he do? He had to smile and sell the butter to the captain. The captain gave Hans three cents for the butter.
The captain and the weighmaster walked away together.
“You punished the thief,” said the weighmaster.
“No, he punished himself,” said the captain, smile.
1. When Hans saw the weighmaster, he ____________________ .
A. stood up at once B. said hello to the weighmaster
C. put a piece of gold into a roll of butter quickly
D. gave the weighmaster a piece
2. After the weighmaster weighed the roll of butter that Hans gave, he_________________.
A. thought Hans was an honest man
B. wanted to weigh all the other rolls of butter
C. wanted to buy a roll of butter from Hans
D. thought Hans was foolish
3. The captain wanted to buy butter from Hans_________________.
A. because he knew Hans was an honest man
B. because he wanted to punish Hans
C. to get the piece of gold in the butter
D. because the butter weighed more than a pound
4. Hans didn't want to sell that roll of butter to the captain because_________________.
A. he had sold it to someone else
B. he didn't like the captain
C. he didn't want to lose the piece of gold in it
D. it weighed more than a pound
.
Language learning begins with listening. Individual children vary greatly in the amount of listening they do before they start speaking, and late starters are often long listeners. Most children will "obey" spoken instructions some time before they can speak, though the word obey is hardly accurate as a description of the eager and delighted cooperation usually shown by the child. Before they can speak, many children will also ask questions by gesture and by making questioning noises.
Any attempt to trace the development from the noises babies make to their first spoken words leads to considerable difficulties. It is agreed that they enjoy making noises, and that during the first few months one or two noises sort themselves out as particularly indicative of delight, distress, sociability, and so on. But since these cannot be said to show the baby's intention to communicate, they can hardly be regarded as early forms of language. It is agreed, too, that from about three months they play with sounds for enjoyment, and that by six months they are able to add new sounds to their repertoire (能发出的全部声音). This self-imitation leads on to deliberate (有意识的) imitation of sounds made or words spoken to them by other people. The problem then arises as to the point at which one can say that these imitations can be considered as speech.
1. By "... challenges explanation" Line 2, Para.1. the author means that ______.
A. no explanation is necessary for such an obvious phenomenon
B. no explanation has been made up to now
C. it's no easy job to provide an adequate explanation
D. it's high time that an explanation was provided
2. The third paragraph is mainly about _____.
A. the development of babies' early forms of language
B. the difficulties of babies in learning to speak
C. babies' strong desire to communicate
D. babies' intention to communicate
3. The author's purpose in writing the second paragraph is to show that children _______.
A. usually obey without asking questions
B. are passive in the process of learning to speak
C. are born cooperative D. learn to speak by listening
4. From the passage we learn that ______.
A. early starters can learn to speak within only six months
B. children show a strong desire to communicate by making noises
C. imitation plays an important role in learning to speak
D. children have various difficulties in learning to speak
5. The best title for this passage would be ______.
A. How Babies Learn to Speak B. Early Forms of Language
C. A Huge Task for Children D. Noise Making and language Learning
.
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1．The text is most likely to be found in ．
A．a scientific research report B．a travel magazine
C．a weekly newspaper D．a geography textbook
2．Who will be most interested in reading the advertisement?
A．Accountants． B．Students．
C．Investors． D．Professors．
3．What is the function of Investment Portfolio Fund?
A．Exposing your money to the ups and downs of the direct investment into shares．
B．Helping lower risk with the potential for higher returns．
C．Hiring no less than five leading fund managers．
D．Giving a detailed description of balanced management requirement．
4．Which of the following statements is NOT true according to the text?
A．The five fund managers with different approaches to investment can cooperate with each other perfectly．
B．Marks&Spencer Financial Services reassure the investors that their interests will be well 1ooked after．
C．Clay Finlay can identify international market opportunities and especially select companies with strong growth chances．
D．Gmo Woolley will be looking for companies that can offer excellent growth chances.
.
Part Ⅰ starts with a brief introductory chapter and then takes up Style and Organization, covering them in that order because skill or lack of skill in style affects all writing, while much technical writing is so short as to offer no problems of organization. These chapters are followed by one on Mechanics, covering matters of form that are peculiar(独有) to technical writing or else crop up in it with abnormal frequency.
The chapter on Special Problems, which follows, performs a double function. It provides writing assignments that may be used while the study of style, organization, and mechanics is still under way, and it explains ways of handling certain problems that may arise during the writing of reports, proposals, and other longer forms. We have also expanded the treatment of technical articles — recognizing the potential contribution of article writing to the career of the writer and the value of the article to science and technology.
In Part Ⅱ, a change of emphasis at one point is reflected in the new title for Chapter 8, Nonformal Reports — Their Variation in Form and Purpose, which was formerly called Special Types of Reports. Though certain special types of reports are still discussed, additional emphasis is given to the fact that there does not exist any universally accepted set of types, under which all reports can be classified.
Two other extensive changes have been made in Part Ⅱ: The chapter on Proposals, which first appeared in the second edition, has been rewritten and substantially expanded so as to cover that important subject more thoroughly. Also, an entirely new chapter, Oral Presentation of Technical Information, has been added. Though a study of this chapter is no substitute for training in public speaking, we believe that its recommendations can nevertheless be of substantial assistance to those who use this book on the numerous occasions when they will be called upon to present their ideas in person before a small group or a large audience.
1.The passage is most probably a preface to ____.
A. a technical writing handbook B. a handbook on composition
C. a book on a literary writing D. a scientific paper
2. In Part I, the writer arranges the chapters in the order of ____.
A. Introduction—Organization—Special Problems—Style—Nonformal Reports
B. Introduction—Style—Organization—Special Types of Reports—Mechanics
C. Introduction—Style—Organization—Mechanics—Special Problems
D. Introduction—Style—Proposals—Special Problems—Mechanics
3.You can find some writing exercises in ____.
A. the chapter on Organization B. the chapter on Style
C. the chapter on Special Problems D. the chapter on Proposals
4. According to the passage, the chapter on Oral Presentation of Technical Information appears in ____ of the book.
A. Part Ⅰ of the first edition
B. Part Ⅱ of the second edition
C. Part Ⅰ of the second edition
D. Part Ⅱ of the third edition
5. Which of the following is not true of Part Ⅱ of the new edition?
A. There isn’t the chapter on Special Types of Reports.
B. The chapter on Oral Presentation of Technical Information is rewritten and expanded.
C. The chapter on Proposals is a revised chapter.
D. There is a change of the title of Chapter 8.
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