题目内容
（请给出正确答案）
Dr. Bruce McEwen of Rockefeller University believes that ______.
A．a person's memory is determined by the level of hormones in his body
B．stress hormones have lasting positive effects on the brain
C．short bursts of stress hormones enhance memory function
D．a person's memory improves with continued experience of stress
如果结果不匹配，请 联系老师 获取答案
更多“Dr. Bruce McEwen of Rockefelle…”相关的问题
Dr. Bruce McEwen of Rockefeller University believes that ________.
A．a person’s memory is determined by the level of hormones in his body
B．stress hormones have lasting positive effects on the brain
C．short bursts of stress hormones enhance memory function
D．a person’s memory improves with continued experience of stress
In a 2001 study of 158 hospital nurses, those who faced considerable work demands but coped with the challenge were more likely to say they were in good health than those who felt they stress that you can manage also boost immune (免疫的) function, in a study at the Academic Center for Dentistry in Amsterdam, researchers put volunteers through two stressful experiences: in the first, a timed task that required memorizing a list followed by a short test; in the second, subjects through a gory (血淋淋的)video on surgical procedures. Those who did well on the memory test had an increase in levels of immunoglobulin A, an antibody that is the body's first line of defense against germs. The video-watchers experienced a downturn in the antibody.
Stress prompts the body to produce certain stress hormones. In short busts these hormones have a positive effect, including improved memory function. "They can help nerve cells handle information and put it into shortage," says Dr. Bruce McEwen of Rockefeller University in New York. But in the long run these hormones can have a harmful effect on the body and brain.
"Sustained stress is not good for you," says Richard Morimoto, a researcher at Northwestern University in Illinois studying the effects of stress on longevity, "It is the occasional burst of stress or brief exposure to stress that could be protective."
The passage is mainly about ______.
A．the benefits of manageable stress
B．how to avoid stress
C．how to cope with stress effectively
D．the effect of stress harmonies on memory
Passage Three
Questions 31 to 35 are based on the following passage.
“Humans should not try to avoid stress any more than they would shun food, love or exercise.” Said Dr. Hans Selye, the first physician to document the effects of stress on the body. While here’s on question that continuous stress is harmful, several studies suggest that challenging situations in which you’re able to rise to the occasion can be good for you..
In a 2001 study of 158 hospital nurses, those who faced considerable work demands but coped with the challenge were more likely to say they were in good health than those who felt they stress that you can manage also boost immune(免疫的) function. In a study at the Academic Center for Dentistry in Amsterdam, researchers put volunteers through two stressful experiences. In the first, a timed task that required memorizing a list followed by a short test, subjects through a gory(血淋淋的) video on surgical procedures. Those who did well on the memory test had an increase in levels of immunoglobulin A, an antibody that’s the body’s first line of defense against germs. The video-watchers experienced a downturn in the antibody.
Stress prompts the body to produce certain stress hormones. In short bursts these hormones have a positive effect, including improved memory function. “They can help nerve cells handle information and put it into storage,” says Dr. Bruce McEwen of Rockefeller University in New York. But in the long run these hormones can have a harmful effect on the body and brain.
“Sustained stress is not good for you,” says Richard Morimoto, a researcher at Northwestern University in Illinois studying the effects of stress on longevity ,”It’s the occasional burst of stress or brief exposure to stress that could be protective.”
第31题：The passage is mainly about ________.
A．the benefits of manageable stress
B．stay away from
C．run out of
D．put up with
Some of the stories are inspiring, others sad, but what is interesting in almost all the cases is the way in which the children's early hopes and dreams are shown in their future lives. For example, at seven, Tony is a lively child who says he wants to become a sportsman or a taxi driver. When he grows up, he goes on to do both. How about Nicki？ She says," I'd like to find out about the moon." And she goes on to become a space scientist. As a child, soft-spoken Bruce says he wants to help "poor children" and ends up teaching in India.
But if the lives of all the children had followed this pattern the program would be far less interesting than it actually was. It was the children whose childhood did not prepare them for what was to come that made the program so inspiring. Where did their ideas come from about what they wanted to do when they grew up？ Are children influenced by what their parents do, by what they see on television, or by what their teachers say？ How great is the effect of a single important event？ Many film directors, including Stephen Spielberg, say that an early visit to the cinema was the turning point in their byes. Dr. Margaret McAllister, who has done a tot of research in this area, thinks that the major influences are parents, friends, and the wider society.
What does the text mainly discuss？
A．New ways to make a TV program interesting.
B．The importance of television programs to children.
C．Different ways to make childhood dreams come true.
D．The influence of childhood experience on future lives.
听力原文： Robert Bruce was a famous Scottish general. In the early fourteenth century he tried to drive the English out of Scotland, but he was not successful because the English were too strong. Finally, Bruce had to run away and hide in a cave.
One day, he lay in his cave thinking of the sad state of Scotland. A spider began to make a web above his head. Simply to pass the time, Bruce broke the web. Immediately the spider began to make a new one. Six times Bruce broke the web and six times the spider made a new one. Bruce was surprised at this. He told himself that he would break the web a seventh time. If the spider made a new ones it would be a good lesson to him, for like the spider, he had been defeated six times. Bruce then broke the web. Again the spider made a new one.
From this simple fact, Bruce became encouraged. He again got an army together. This time he was successful and drove the English out of Scotland.
(34)
A．He was an English general.
B．He was a Scottish general.
C．He was an English biologist.
D．He was a Scottish biologist.
A.$12,000
B.$13,600
C.$18,000
D.$19,300
E.$19,600
By saying "they employ chemical warfare" (Line 4, Para. 2), Bruce Ames means______.
A．plants produce certain chemicals to combat pests and diseases
B．plants absorb useful chemicals to promote their growth
C．farmers use man-made chemicals to dissolve the natural chemicals in plants
D．farmers use chemicals to protect plants against pests and diseases
