液体流经孔口时二者是（）接触，流体只产生局部水头损失，而不产生沿程水头损失。A.点

随着自我意识的增强，青春期的少年变得经常注视自己，比如喜欢穿新颖的衣服；在同学中做出引人入目的举动；对未来充满美好的幻想……但有时又会因外貌上的小小失败，生活中的小小挫折，就认为低人一等，丧失信心，甚至变得孤僻起来。

（1）青春期的我们面临着哪些矛盾？

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（2）面对青春期中的矛盾，我们应有的正确态度是怎样的？

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有关10-20电极放置法的叙述，错误的是（）。

A.在矢状位上以鼻根和枕后粗隆为基准

B.在冠状位以双耳垂为基准

C.标准安放包括21个电极准确位置

D.电极安放点代表大脑的各个不同解剖部位

E.包括额、中央、顶中线部位

生产者、销售者对抽查检验的结果有异议的，可以自收到检验结果之日起十五日内向（）申请复检，由受理复检的产品质量监督部门作出复检结论。

A.实施监督抽查的产品质量监督部门

B.平级的其他地区的产品质量监督部门

C.仲裁部门

D.其上级产品质量监督部门

个人福利中的互助会指的是（）。

A.养老金

B.储蓄

C.辞退金

D.交通费

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.

The author quotes Leibenluft’s comment in the last paragraph to（）

A. summarize the main idea of the passage

B. recommend an alternative perspective to look at the issue of depression

C. express the author’s pity about the slow improvement on the cure of depression

D. praise the great efforts made by researchers on the subject of depression