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  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

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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【C1】________we put the keys just a moment ago, or an old acquaintance’s name, or the name of an old band we used to love. As the brain【C2】________, we refer to these occurrences as "senior moments".【C3】________seemingly innocent, this loss of mental focus can potentially have a(n)【C4】________impact on our professional, social, and personal【C5】________.
    Neuroscientists, experts who study the nervous system, are increasingly showing that there’s actually a lot that can be done. It【C6】________out that the brain needs exercise in much the same way our muscles do, and the right mental【C7】________can significantly improve our basic cognitive【C8】________Thinking is essentially a【C9】________of making connections in the brain. To a certain extent, our ability to【C10】________in making the connections that drive intelligence is inherited.【C11】________, because these connections are made through effort and practice, scientists believe that intelligence can expand and fluctuate【C12】________mental effort.
    Now, a new Web-based company has taken it a step【C13】________and developed the first "brain training program" designed to actually help people improve and regain their mental【C14】________.
    The Web-based program【C15】________you to systematically improve your memory and attention skills. The program keeps【C16】________of your progress and provides detailed feedback【C17】________your performance and improvement. Most importantly, it【C18】________modifies and enhances the games you play to【C19】________on the strengths you are developing—much like a(n)【C20】________exercise routine requires you to increase resistance and vary your muscle use.
【C14】
选项 A、sharpness
B、stability
C、framework
D、flexibility
答案A
解析 考查动宾搭配。空格前的regain意为“重获”，其宾语应该是“本来具备或后来失去”的东西。而文章首段就提到，人到中年，记忆力和思维清晰度会降低；第二段提到了该课程可以提高记忆力和注意力，因此可推断此处填入的词应与clarity“清晰度”意思相近，故答案选A项sharpness“清晰度”。B项stability“稳定性”；C项framework“框架”；D项flexibility “灵活性”与regain搭配均不符合语境，故排除。
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