"Humans should not try to avoid stress any more than they would shun food, love or exercise." said Dr. Hans Selye, the first phy

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问题    "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 no 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 couldn’t get the job done.
   Stress that you can manage may 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 believed they had control over the outcome. In the second, they weren’t in control: They had to sit through a gory(血淋淋的)video on surgical procedures. Those who did go on the memory test had an increase in levels of immunoglobulin(免疫球蛋白)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 (长寿),"It’s the occasional burst of stress or brief exposure to stress that could be protective. "(325w)
What does the author imply to the readers according to the passage?

选项 A、People should avoid stress just as they shun food, love or exercise.
B、People should keep sustained stress which is good for our health:
C、People should live without stress at all.
D、People should not afraid of occasional stress which can be good for us.

答案D

解析  通读全篇,知道作者的观点既不是要人们在毫无压力的情况下工作生活,也不能在持续压力的情况下工作生活,而对于偶尔的压力爆发,则被视为是对人体有益的。本体属于隐含暗示题。做这种题时,应特别注意原文语气的转折。考虑要全面。因为选项B.stress hormones have lasting positive effects on the brain和选项C.International ocean shipping constitutes a highly significant aspect of world economic and political relationships.The rapid growth in world trade and the emergence of new national entities in the last 30 years have further emphasized the role of international shipping.short bursts of stress hormones enhance memory function的意思原文中都有。但这里问的是作者说But in the long run these hormones can have a harmful effect on the body and brain这句话的含义,而不涉及其他。故答题时,要注意针对性。
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