2. 外语
  3. As many people hit middle age, they often start to notice that their memory and mental clarity are not what they used to be. We

As many people hit middle age, they often start to notice that their memory and mental clarity are not what they used to be. We

admin2013-09-04  19
问题     As many people hit middle age, they often start to notice that their memory and mental clarity are not what they used to be. We suddenly can’t remember where we put the keys just a moment ago or an old acquaintance’s name. As the brain fades, we refer to these occurrences as "senior moments." While seemingly innocent, this loss of mental focus can potentially have a detrimental impact on our professional, social, and personal well-being.
    Neuroscientists are increasingly showing that there’s actually a lot that can be done. It turns out that the brain needs exercise in much the same way our muscles do, and the right mental workouts can significantly improve our basic cognitive functions. Thinking is essentially a process of making neural connections in the brain. Because these connections are made through effort and practice, scientists believe that intelligence can expand and fluctuate according to mental effort.
    A new company has taken it a step further and developed the first "brain training program," called Lumosity to actually help people improve and regain their mental sharpness. Lumosity is far more than an online place to exercise your mental skills. That’s because they have integrated these exercises into a Web-based program that allows you to systematically improve your memory and attention skills. The program keeps track of your progress and provides detailed feedback on your performance and improvement. Most importantly, it constantly modifies and enhances the games you play to build on the strengths you are developing—much like an effective exercise routine requires you to increase resistance and vary your muscle use.
    Apparently it works. In randomized, controlled clinical trials Lumosity was shown to significantly improve basic cognitive functions. One study showed students improved their scores on math tests by 34 percent after using Lumosity for six weeks. The company says its users have reported clearer and quicker thinking, improved memory, increased alertness and awareness, elevated mood, and better concentration at work or while driving.
    While many of the games at Lumosity are free, a modest subscription fee is required to use the full program over the long term. However, Lumosity is currently offering a free trial of their program to new users so that you can see how well it works before you decide to subscribe. The company believes the results will speak for themselves.
The main purpose in writing this passage is to______.
选项 A、present the new findings of neuroscientists
B、remind the middle-aged to take physical exercise
C、describe how Lumosity came into being
D、introduce how braining training makes you smarter
答案D
解析 文章首先提到中年人遇到的问题，主要是记忆力下降，然后引用了神经学家的近期发现，但文章的主题是介绍Lumosity的特点和效果。
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