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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.

13．______

A.back
B.further
C.aside
D.around

正确答案及解析

正确答案

解析

本题测试考生词汇搭配能力。Back后退；向后；further进一步；aside在旁边；around四处，到处。 take a step意为“采取行动”。根据下文该网络公司开发了第一个“大脑训练课程”的情况，再结合上一段科学家提出的研究结论，可以得出该公司已经把理论应用到实际中，可以说是“进一步”，故选B项further。A项back填入后，表示“采取后退的行动”，而此处谈到的是进步；step在此语境中不是具体的“脚步，步伐”的意思，而是和take构成“采取措施”这一抽象的含义，因此不与C项aside搭配（step aside意为“走到一边”)；D项around不与step搭配。