2016英语专四完型填空集训附答案解析（3）

　　完形填空是一个投入和产出比比较低的科目，方法技巧是有，但关键还是要打好基础，新东方在线英语专四频道分享最新英语专业四级考试完型填空练习，备考专四的同学们要早点准备，多练习多积累。

2016英语专四完型填空集训附答案解析（3）

　　Researchers have established that when people are mentally ____1____, biochemical changes occur in the brain that allow it to ____2____ more effectively in cognitive (认知的) areas such as attention and memory. This is true ____3____ age.

　　People will be alert and ____4____ if they are faced with information that ____5____ them to think about things they are ____6____ in. And someone with a history of doing more ____7____ less will go into old age more cognitively sound than someone who has not had an active ____8____.

　　Many experts are so convinced ____9____ the benefits of challenging the brain that they are ____10____ the theory to work in their own lives. “The idea is not ____11____ to learn to memorize enormous ____12____ of information,” says James Fozard, associate director of the National Institute on Aging. “Most of us don’t need that kind of skill. Such specifi c training is____13____ less interest than being able to maintain mental ____14____.” Fozard and others say they challenge their brains with different mental skills, ____15____ because they enjoy them and because they are sure that their range of activities will help the ____16____ their brains work.

　　Gene Cohen, acting director of the same institute, says that we are frequently advised to keep ____17____ active as we age, but older people need to keep mentally active as well. Those who ____18____ are more ____19____ to maintain their intellectual abilities and to be generally happier and better adjusted. And intellectual activity actually ____20____ brain-cell health and size.

　　1. A. strengthened B. alert C. engaged D. activated

　　2.A. act B. think C. learn D. respond

　　3.A. as to B. regardless of C. in spite of D. despite

　　4.A. deceptive B. inceptive C. perceptive D. receptive

　　5.A. makes B. lets C. pushes D. gets

　　6.A. familiar B. interested C. Impressed D. attracted

　　7.A. rather than B. other than C. instead of D. in place of

　　8.A. brain B. mind C. intellect D. mentality

　　9.A. with B. at C. of D. in

　　10. A. putting B. trying C. using D. laying

　　11. A. certainly B. necessarily C. immediately D. quickly

　　12. A. number B. numbers C. amount D. amounts

　　13. A. of B. in C. with D. at

　　14. A. function B. alertness C. activity D. shape

　　15. A. both B. not C. and D. which

　　16. A. style B. effect C. efficiency D. way

　　17. A. bodily B. physically C. spiritually D. intellectually

　　18. A. do B. act C. work D. laugh

　　19. A. possible B. able C. likely D. often

　　20. A. affects B. influences C. reflects D. changes

　　文章大意

　　本文主要介绍研究人员所证实的一个观点 ：当人们动脑筋时 ，大脑 中会产生生物化学变化 ，这种变化在人们 的认知方面体现得更为明显 。另外，当人们遇到自己感兴趣的内容时 ，大脑会保持清醒状态 ;同时 ，经常动脑筋对年老之后 的脑健康是非常有益的。

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