B
Around the world more and more people are taking part in dangerous sports and activities. Of course, there have always been people who have looked for adventure--those who have climbed the highest mountains, explored (探险) unknown parts of the world or sailed in small boats across tile greatest oceans. Now, however, there are people who seek (寻找) an immediate thrill(令人激动的事情) from a risky activity which way only last a few minutes or even seconds.
I would consider bungee jumping(蹦极跳) to be a good example of such an activity. You jump from a high place ( perhaps a bridge or a hot air balloon) 200 metres above the ground with an elastic (弹性的) rope tied to your ankles. You fall at up to 150 kilometres an hour until the rope stops you from hitting the ground. It is estimated that 2 million people around the world have now tried bungee jumping. Other activities which most people would say are as risky as bungee jumping involve(包括) jumping from tall buildings and
A. they have a lot of free time
B. they can go to hospital if they are injured
C. their lives lack excitement
D. they no longer need to hunt for food
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 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 video on surgical procedures. Those who did well on the memory test had an increase in levels of immunoglobulin A, an antibody that&lsquo
A. the benefits of manageable stress
B. how to avoid stressful situations
C. how to cope with stress effectively
D. the effects of stress hormones on memory
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