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  3. Studies from 10 nations reveal that the rates of depression among women are twice as high as they are among men. Do women have a

Studies from 10 nations reveal that the rates of depression among women are twice as high as they are among men. Do women have a

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问题     Studies from 10 nations reveal that the rates of depression among women are twice as high as they are among men. Do women have a biological bent for depression, or are social double standards the major cause?
    Mental health workers have long noticed among the clinically depressed women take up a bigger proportion. Until recently, though, it was unclear whether more women than men were ill or, instead, whether more women sought help. In fact, a mounting collection of studies has confirmed that major depression is twice as common among women as it is among men. "This is one of the most consistent findings we have ever had," says Myrna M. Weissman of Columbia University.
    Scientists searching for explanations are challenged by the fact that a variety of cues prompt depression in different people. Sorting out which factors might have a greater influence on women has not proved easy. Both sexes stand an equal chance of inheriting major depression, so genes are most likely not to blame. Yet hormones and sleep cycles--which differ dramatically between the sexescan alter mood. Also, many workers have proposed that social discrimination might put women under high levels of stress.
    In 1990 an international group examines mood disorders. In the 10 nations reviewed so far, the team has found that among generations reaching maturity after 1945, depression seems to be on the rise and occurs at a younger age. Although overall incidence varies regionally, "everywhere the rates of depression among women are about twice as high as they are among men," Weissman says.
    In contrast, lifetime rates for manic-depressive illness do not differ according to sex or culture. Mark S. George and his colleagues at the National Institute of Mental Health (NIMH) recently studied which regions of the brain have greater blood flow during periods of depression. George found that "the brain activity of the men and women of depression looked very different. " He has since compared feelings of anger, anxiety and happiness, finding no such big a difference.
    Because one in five American women has a history of depression, especially as they often pursue therapy from other sources, sometimes on top of an anti-depressant clinic. Says Leibenluft: "It is remarkable how little work has been done on this subject. "  
What can we infer from Mark S. George’s research?
选项 A、In any point of life, more women suffer from depression than men do.
B、Although the reasons for depression may differ, there is the same part of brain that would act differently if people have depression, regardless of their gender.
C、Depression is the only case when men and women show difference in brain activities.
D、Men and women have differences in brain activities when in anger, anxiety and happiness.
答案D
解析 推论题；“Mark S．George”可以帮助我们迅速找到该题考查的内容在原文中的位置；A项和原文中“lifetime rates for manic-depressive illness do not differ according to sex or culture”的论述相反，不难排除。B中涉及了一些文章中的信息点，但是组合起来的论述在原文中是找不到支持或者反驳的观点或事实的，属于无法证实或证伪的论述，应该排除。C和原文论述有出入，原文是说，在各种不同的情绪中，男女的大脑活动都没有像抑郁症这么大的区别，可见在这些情绪中也是有区别的，排除这一选项。D项对这一问题的认识是正确的，为正确答案。
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