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问题 单项选择题

国际上通行的看法是：一个国家或一个地区的60岁以上的人口占其人口总数的（），该国家或地区可以称作进入“老龄化社会”。

A.5%

B.10%

C.20%

D.50%

答案

参考答案：B

单项选择题

有机磷中毒的主要机制是（）。

A.扰乱巯基酶系统，影响细胞代谢

B.与胆碱酯酶活性部分相结合，使酶失去活性，造成组织中乙酰胆碱积聚

C.主要损害肺毛细血管，增加其通透性

D.损害细胞内的三羧酸循环，引起细胞能量代谢严重障碍

E.直接损伤毛细血管壁，使其通透性和脆性增加
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问答题

What is a novel I say: an invented story. At the same time a story which, though invented, has the power to ring true. True to what True to life as the reader knows life to be or, it may be, feels life to be. And I mean the adult, the grown-up reader. Such a reader has outgrown fairy tales, and we do not want the fantastic and the impossible. So I say to you that a novel must stand up to the adult tests of reality.
You may say: "If one wants truth, why not go to the literally true book Biography or documentary, these amazing accounts of amazing experiences which people have. " Yes, but I am suggesting to you that there is a distinction between truth and so-called reality. The novel does not simply recount experience; it adds to experience. And here comes in what is the actual livening spark of the novel: the novelist’s imagination has a power of its own It does not merely invent, it perceives. It intensifies, therefore it gives power, extra importance, and greater truth to what may well be ordinary and everyday things.
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