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We find （）necessary to stress the importance of making punctual shipment within the validity of the L/C.
A . how
B . that
C . it
D . u
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To lessen stress in life, we can________.
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It is most likely that the researchers tagged the birds that they captured during Study 1 to:
A.determine how beak depth was affected by rainfall on Island A.
B.determine the average age of each finch population.
C.ensure that the beak depth of each finch was measured multiple times during Study 1.
D.ensure that the beak depth of each finch was measured only once during Study 1.
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It's a consensus among the researchers that humans are still unconscious of ______.
A．why they look attractive
B．when attractiveness is important
C．how powerful beauty is
D．what constitutes beauty
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听力原文：M: Don" t you think it would have been very nice to have lived in the 19th century？ They didn’t have this terrible stress and pace that we have.
W: Yes, but what did they do with that leisurely pace. ？ All that most people had to think about was where the next meal was coming from.
What problem did she mention？
A．They had too much stress.
B．They had nothing to do in their spare time.
C．They were worried about their meals.
D．The pace was terrible.
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The underlined sentence in Paragraph 7 roughly means that the researchers believe that
A．mutated genes have a negative influence on Ashkenazim"s intelligence
B．mutated genes have played a role in Ashkenazim"s intelligence
C．the Ashkenazim"s high intelligence is caused by the mutated genes
D．the Ashkenazim"s illnesses have greatly handicapped their performance
此题为多项选择题。
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Let me stress that I am talking about white lies.
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Researchers have discovered in their study that boys and girls may behave _____（）.
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（） . Another type of eustress leads to better performance, but only up to a point, as the illustration displays. 题目: According to most researchers, how many kinds of stress are there？
A．One
B．Two
C．Three
D．Four
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听力原文：M: We've got three women researchers in our group: Mary, Betty and Helen. Do you know them？
W: Sure. Mary is active and sociable. Betty is the most talkative woman I've ever met. But guess what？ Helen's just the opposite.
Q: What do we learn from the woman's remark about Helen？
(14)
A．Helen is quiet.
B．Helen is talkative.
C．Helen is sociable.
D．Helen is active.
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Over sixty years ago, Dr. Hans Selye recognized the mind-body connection involved with stress, as all of his patients had similar physiological and psychological characteristics. Studies done with laboratory rats found that these same physical responses existed with animals when they were put under stress. He came to the conclusion that stress is "the non-specific response of the body to any demand placed upon it". He concluded that each demand made on the body is unique in that there is a definite response: when we are cold, we shiver; when we are hot we perspire; a great muscular effort increases the demands upon the heart and vascular system.
Selye claimed that it was not stress that harmed us, but distress, and distress occurred when we prolonged emotional stress and didn't deal with it in a positive manner. Selye was the pioneer in research into stress in the 1930s, and is internationally acknowledged as "the father of the stress field'. After publishing the first scientific paper to identify and define "stress" in 1936, Selye wrote more than 1700 scholarly papers and 39 books on the subject. At the time of his death 1982, his work had been cited in more than 362,000 scientific papers, in countless popular magazine stories, and in most major languages. Selye held three earned doctorates (M. D. , Ph. D. , D. Sc. ) plus 43 honorary doctorates, tie was an elected member of several dozen of the world's most recognized medical and scientific associations.
After completion of his academic and professional studies in Prague, Paris, and Rome, Selye received a Rockefeller Research Fellowship and accepted a position at Johns Hopkins University in Baltimore, Maryland. By 1945 he had become the first Director of tile Institute of Experimental Medicine and Surgery at the University of Montreal, Canada. He served in that position until his retirement in 1976. Subsequently he established the International Institute of Stress. He recognized that strain, or stress, plays a very significant nile in the development of all types of disease. Selye called the process whereby strain influences the body, the General Adaptation Syndrome. He concluded that there are three distinctive phases in this process: alarm, resistance, and exhaustion. He wrote of two types of stress: pleasant stress contributing to human well-being, and unpleasant stress contributing to disease. He is still by far the world's most frequently cited author on stress topics.
What does the passage mainly discuss？
A．Selye's professional life and achievements.
B．The origins of the word "stress".
C．Defining stress.
D．The father of the stress field.
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Researchers think that it is______.
A．safe to eat fresh fish
B．dangerous to get close to the algae
C．safe to be near the algae
D．dangerous to expose the algae
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From what the two American researchers said we can conclude that____.
A．the American experts working in the refrigerator project are disappointed with China's refrigerator production
B．the American researchers are particularly worried about China's over-emission of CFC into the air
C．the American researchers in refrigerator technology enjoy their opportunity to work in China
D．the American experts sees China as the best place to increase their export of refrigerator technology
此题为多项选择题。
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Researchers previously concluded that lack of sleep led teenagers to
A．stay away from drugs.
B．increase drug use.
C．reduce drug use.
D．imitate their friends.
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We can consider our children under stress when they______.
A．are unable to communicate their feelings accurately
B．have trouble communicating their responses to events
C．often feel abdominal pain without a known reason
D．have a poor and overcrowded family
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In the opening paragraph, Spanish researchers suggest that
A．the weather system of Europe follows a strict weekly cycle.
B．there is a great possibility of rain in Spain on weekends.
C．rain cycles have resulted from the excessive human activities.
D．weather interacts with human activities in a straightforward way.
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We must stress that this offer is firm for three days only because of the heavy demand () the limited supplies of this velvet in stock.
A、for
B、on
C、of
D、in
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Researchers were surprised by the answer that the volunteers gave in the first test. 查看材料
A.Right
B.Wrong
C.Not mentioned
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We humans aren't the only ones who want to fit in. Researchers have discovered that chimpanzees, too, preferentially adopt their fellow chimps' way of doing things.
Andrew Whiten of St. Andrews University in Fife, Scotland, and his colleagues studied three groups of captive chimpanzees and the ways in which they assumed different techniques for obtaining food. The first group contained a high-ranking female that had been taught to retrieve food from an apparatus by using a stick to push a blockage away, thus freeing the food item. The second group also contained a female expert, but one that had been instructed to lift the blockage with the stick in order to release the treat. The third group was a control group and did not have a local expert. When the experts were reunited with their respective group, the other chimps watched their activities at the food apparatus intently and learned to apply either the poking or lifting technique themselves. Members of the third group, lacking an expert to guide them, failed to figure out the contraption on their own.
For the most part, chimps in the first group initially stuck to poking and those in the second group stuck to lifting. But then, unexpectedly, some chimps discovered and began using the other strategy. When the food apparatus was reintroduced two months later, however, the chimps reverted to their group's normal way of doing things. In the case of those animals in the lifting group, this meant discarding a technique (poking) that is actually more natural for chimpanzees than lifting is.
"We have shown a non-human species conforming to a group norm, despite possession of an alternative technique that represents the norm of another group," the team writes in a report published online by the journal Nature. "Conformity fits the assumption of an intrinsic motivation to copy others, guided by social bonds rather than material rewards such as food."
The phrase "fit in" (Line l, Para. I) most likely means ______.
A．suit
B．adopt
C．adjust
D．conform
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Brain researchers have discovered that the formation of new habit can be ______.
A．predicted
B．regulated
C．traced
D．guided
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Many researchers believe that the presence of RNA ...
Many researchers believe that the presence of RNA in brain cells is the biochemical basis of memory; that is, the presence of RNA enables us to remember. Because certain chemicals are known to inhibit the synthesis of RNA in the body, we can test this hypothesis. Animals that have learned particular responses can be injected with an RNA inhibitor and then tested for memory of the learned responses. Which of the following test results would most seriously weaken the case for RNA as the basis of memory？
A．After an injection of RNA inhibitor, a wide range of behaviors in addition to the learned responses were affected.
B．After an injection of RNA inhibitor, animals that had not consistently been giving the learned responses were able to give them consistently.
C．After injections of RNA inhibitor, some animals lost memory of the learned responses totally but others lost it only partially.
D．After a small injection of RNA inhibitor, animals responded well, but as the size of the injection increased, they gave fewer of the learned responses.
E．After an injection of RNA inhibitor, animals could not learn a new response.
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Which of the following is NOT an example that causes stress（）
A．Lacking adaptability and a code of life
B．Killing a bear in hunting
C．The failure to pass final examinations
D．Having an economic problem
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In the compound word greenhouse, we find the primary stress on the second part of the
是
否
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However, the researchers identified sixty－one genes that speed up or（)with age.
A.set in
B.chase after
C.slow down
D.hold up
