Read the following text. Choose the best

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问题 Read the following text. Choose the best word(s) for each numbered blank and mark A, B, C or D on the ANSWER SHEET. (10 points) 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.18.______A. irregularlyB. habituallyC. constantlyD. unusually

选项 A. irregularly
B. habitually
C. constantly
D. unusually

答案 C

解析 本题测试考生根据上下文判断词义的能力。irregularly不定期地,无规律地;habitually经常地,惯常地;constantly不断地;经常地;unusually异常地;不寻常地。空格处填入的副词说明该课程是怎样调整和增强(modifies and enhances)训练的。空格后的不定式是调整和增强训练的目的,而strengths you are developing是一个正在发生的过程。C项constantly“不断地;经常地”正好能与之在语义上相应,故确定C项为答案。A项irregularly和D项unusually无法体现strengths这个积累的过程,故排除;而B项habitually“经常地,惯常地”主语需是人,不符合语境要求,也可排除。
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