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    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 (1)_____ 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 (2)_____, we refer to these occurrences as “senior moments.” (3)_____ seemingly innocent, this loss of mental focus can potentially have a(n) (4)_____ impact on our professional, social, and personal (5)_____.

     Neuroscientists, experts who study the nervous system, are increasingly showing that there’s actually a lot that can be done. It (6)_____ out that the brain needs exercise in much the same way our muscles do, and the right mental (7)_____ can significantly improve our basic cognitive (8)_____. Thinking is essentially a (9)_____ of making connections in the brain. To a certain extent, our ability to (10)_____ in making the connections that drive intelligence is inherited. (11)_____, because these connections are made through effort and practice, scientists believe that intelligence can expand and fluctuate (12)_____ mental effort.

     Now, a new Web-based company has taken it a step (13)_____ and developed the first “brain training program” designed to actually help people improve and regain their mental (14)_____.

     The Web-based program (15)_____ you to systematically improve your memory and attention skills. The program keeps (16)_____ of your progress and provides detailed feedback (17)_____ your performance and improvement. Most importantly, it (18)_____ modifies and enhances the games you play to (19)_____ on the strengths you are developing—much like a(n) (20)_____ exercise routine requires you to increase resistance and vary your muscle use.

(7)

A
roundabouts
B
responses
C
workouts
D
associations
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答案:

C

解析:

答案精析:名词辨析题。由空格前的and可知,空格处的语意应承接前半句的内容。句子大意为“大脑和我们的肌肉一样需要锻炼,而适当的脑力________可以显著地提高我们基本的认知________。”mental对应空格前的brain,因此空格处应填入和exercise意思一致的单词,故选择workouts。

错项排除:A项roundabouts意为“环形交通枢纽”,和mental搭配语义不通,故排除。B项responses,D项associations和mental搭配分别意为“适当的大脑反应”和“适当的大脑联系”,意思和前文毫无逻辑可言,故排除。

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