Question

“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 encourage 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. ”

 

67. 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

68. The underlined word “shun”（in Para. 1） most probably means________.

A. cut down on       B. put up with        D. run out of        C. stay away from

69. We can conclude from the study of the 158 nurses that_______ .

A. people under stress tend to have a poor memory

B. doing challenging work may be good for one’s health

C. people who can’t get their job done experience more stress

D. stress will weaken the body’s defense against germs

70. In the experiment described in Paragraph 3, 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

71. Dr.  Bruce McEwen of Rockefeller University believes that______.

A. a person’s memory is determined by the level of hormones in his body

B. a person’s memory improves with continued experience of stress.

C. stress hormones have lasting positive effects on the brain

D. short bursts of stress hormones improve memory function

Answer 1

BDBCD