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.
21. The passage is mainly about______
A) how to avoid stressful
B) how to cope with stress effectively
C) the benefits of manageable tress
D) the effect of stress harmonies on memory
22. The word shun most probably means________.
A) cut down on
B) stay away from
C) run out of
D) put up with
23.We can conclude from the study of the 158 nurses in 2001 that_______
A) people who can t get their job done experience more stress
B) doing challenging work may be good for one s health
C) stress will weaken the body s defense against germs
D) people under stress tend to have a poor memory
24.In the experiment described in Paragraph 3,the video-watchers experienced a downturn in the antibody because______.
A) the outcome was beyond their control
B) they knew little about surgical procedures
C) they felt no pressure while watching the video
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