注:看最后一句话,cooperation of nations 对应coordinated international efforts。
1. 例子如何处理:重要的一定看明白,不重要的不看
2. 哪些重要(转折、例子前后的话、灭绝的东西),哪些不重要(例子内容、小的并列如水果的例子
We sometimes think humans are uniquely vulnerable to anxiety, but stress seems to affect the immune defenses of lower animals too. In one experiment, for example, behavioral immunologist Mark Laudenslager, at the University of Denver, gave mild electric shocks to 24 rats. Half the animals could switch off the current by turning a wheel in their enclosure, while the other half could mot. The rats in the two groups were paired so that each time one rat turned the wheel it protected both itself and its helpless partner from the shock. Laudenslager found that the immune response was depressed below normal in the helpless rats but not in those that could turn off the electricity. What he has demonstrated, he believes, is that lack of control over an event, not the experience itself, is what weakens the immune system.
注:1. vulnerable易受伤害的
2. immune defense 免疫系统
3. found之后是试验告诉我们的观点
4. depress压抑;沮丧的,de往下
Other researchers agree. Jay Weiss, a psychologist at Duke University School of Medicine, has shown that animals who are allowed to control unpleasant stimuli dont develop sleep disturbances or changes in brain chemistry typical of stressed rats. But if the animals are confronted with situations they have no control over, they later behave passively when faced with experiences they can control. Such findings reinforce psychologists suspicions that the experience or perception of helplessness is one of the most harmful factors in depression.
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