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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.

16．______

A.hold
B.track
C.order
D.pace

正确答案及解析

正确答案

解析

本题测试考生根据上下文对词语的搭配能力。hold控制；track追踪，轨迹； order秩序； pace步伐。由本句中的连词and可知，前后动作是先后关系。后面说的是该课程可以提供具体反馈，因此应该是先“知道，了解”你的进展，再根据keep…of sth. 这一搭配，只有B项track填入后表示“保持／了解某事物情况／进展”的意思，故正确。keep hold of your progress意为“控制你的进展”，进展是一个自发的过程不能被控制，不符合语义需要，故排除A；C项pace和D项order都不能构成keep…of这一搭配，故排除。