题干

The Whites ________ to City Centre already.

A:have been

B:are going

C:went

D:go

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答案(点此获取答案解析)

A

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    Have you ever noticed what happens to an idea once you express it? Just talking about it or writing it down causes you to make it clear in your own mind. How can you use this to increase your brain power? Start writing.

    By putting thoughts into words, you are telling yourself the logic(逻辑)behind what you think, feel, or only partly understand. Often, explaining a thought is the process of understanding. In other words, you increase your brain power by exercising your “explain power.”

    Try this experiment. Explain how you'll increase your brain power, even if you have no idea right now. Just start with anything, and create an explanation. For example, start with “I'll learn chess,” or “I'll read an article on the mind every week.” Explain how that will help. You'll be surprised how often this becomes a workable plan, and if you actually do this, you'll have a better understanding of your brain from now.

    Another benefit of writing is that it helps you remember. Many, if not most, highly productive people are always taking notes. You can try keeping it all in your head, but if you keep a journal of your ideas the next time you're working on a big project, you'll probably have more success.

    Want to understand a topic? Write a book about it. That's an extreme example, but if you are learning something new, write a letter to a friend about it, and you will understand it better. Want to invent something? Write an explanation of the problem, why you want to solve it, and why it is worth solving, and you're half-way there.

    Writers don't always write because they clearly understand something beforehand. Often, they write about something because they want to understand it. You can do the same. Writing will help bring you to an understanding. Give it a try.

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笑可以提高记忆力
①国外媒体报道,研究人员发现,笑能改善人的健康,同时令大脑进入一种深度冥想状态,这对提高人的记忆力大有裨益。
②最新研究显示,压力激素皮质醇伤害大脑内某些神经细胞,可能给人的记忆力和健康造成负面影响。
③参与这项研究的李·伯克博士说:“道理很简单,人承受的压力越少,人的记忆力就越好。幽默减少皮质醇等有害的压力激素,降低血压,增加血流量,使人心情好。皮质醇减少有助于提高记忆力。笑增加大脑中内啡肽和多巴胺的释放,这些激素使人产生高兴的感觉。这些积极和有益的神经化学变化使免疫系统变得更好。欢乐的笑声立即产生的脑波频率和人在真正冥想状态中产生的脑波频率相同。”
④这项研究的负责人向一组健康的人和一组患有高血压病的人播放一段使人发笑的20分钟视频。然后,让这两组调查对象完成一个衡量学习、回忆和视觉识别能力的记忆力评估。他们的成绩与另一组没有观看有趣视频的人相比,发现观看有趣视频的两个组的皮质醇浓度明显降低,记忆力评估的所有方面都有很大改善。与此同时,高血压病一组在皮质醇水平变化上得到最引人注目的好处,而健康组在记忆力测试成绩上得到最明显变化。
⑤研究人员表示:将来,如能把这项有益的幽默疗法研究成果提供给临床,它将会对提高人的记忆力和健康保健等方面起到非常重要的作用。