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C
“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 study of 158 hospital nurses, those who faced considerable work demands but deal with the challenge were more likely to say they were in good health than those who felt they couldn’t get the job done.
Stress that you can manage also promote 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 believed they had control over the outcome. In the second, they weren’t in control. They had to sit through a bloody video on surgical procedures. Those who did the memory test had an increase levels of immunoglobulin A, an antibody(抗体) that’s the body’s first line of defense against germs. However, the video-watchers experienced a fall in the antibody.
Stress encourages body to produce certain stress hormones(荷尔蒙) . 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.
“Continuous stress is not good for you,” says Richard Morimoto, a researcher at Northwestern University in Illinois studying the effects of stress on one’s life, “It’s the occasional burst of stress or brief experience of stress that could be protective.”
68. The passage is mainly about .
A. how to promote immune function
B. the benefits of manageable stress
C. how to deal with stress effectively
D. the effect of stress hormones on memory
69. The underlined word “shun”(in Para.1) most probably means .
A. cut down on B. put up with C. run out of D. stay away from
70. In the experiment described in paragraph3, the video-watcher experienced a fall in the antibody because .
A. the video was not enjoyable at all.
B. they knew little about surgical procedures.
C. the degree of stress was beyond their control.
D. they felt no pressure while watching the video.
D
根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。请将答案写在答题纸上。涂卡时注意：E=A+B ；F=A+B=C
SELF STUDY TIPS
However difficult you find it to arrange your time, it will pay off in the long run if you set aside a certain part of the day for studying - and stick to it. 72 . But don’t forget to make sure that you have enough left for recreational activities or simply to be “with” yourself: reading a novel or watching a television program.
As part of your weekly schedule, it is also advisable to consider exactly what you have to do in that week, and make sure that you handle the most significant tasks first. 73 .
On a physical level, make sure you have an area or space for studying. 74 . If you always study in the same place, preferably a room of your own, you will find it easier to adjust mentally to the activity when you enter that area. You should have everything that you might need at hand.
Make sure that all the physical equipment that you use, such as a desk, chair etc. is at good height for you. If you use a personal computer, there are plenty of guidelines available from the movement on angles, lighting and the like. Consult these and avoid the typical student aches and pains.
If you are working on topic your teacher has set, but finding it hard to concentrate, it may be that you actually need to take your mind right off it for a period of time. 75 . After a period away from the test, having not thought about it at all, you may return to it refreshed and full of ideas.
A. It’s wise to leave the easier or less urgent areas of your work until later
B. It’s all too easy to read something and then forget where it came from
C. “Airing the mind” can work wonders sometimes
D. Make use of equipment that is available to you
E. It is best to make a weekly schedule
F. Don’t do it just any where |