大学英语专四考试完形填空密训试题

1、大学英语专四考试完形填空密训试题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 tha

2、t _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

3、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 dont need that kind of skill. Such speci c training is_13_ less interest than being able to maintain mental _14_.” Fozard a

4、nd 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_ activ

5、e 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. acti

6、vated2.A. act B. think C. learn D. respond3.A. as to B. regardless of C. in spite of D. despite4.A. deceptive B. inceptive C. perceptive D. receptive5.A. makes B. lets C. pushes D. gets6.A. familiar B. interested C. Impressed D. attracted7.A. rather than B. other than C. instead of D. in place of8.A

7、. brain B. mind C. intellect D. mentality9.A. with B. at C. of D. in10. A. putting B. trying C. using D. laying11. A. certainly B. necessarily C. immediately D. quickly12. A. number B. numbers C. amount D. amounts13. A. of B. in C. with D. at14. A. function B. alertness C. activity D. shape15. A. bo

8、th B. not C. and D. which16. A. style B. effect C. efciency D. way17. A. bodily B. physically C. spiritually D. intellectually18. A. do B. act C. work D. laugh19. A. possible B. able C. likely D. often20. A. affects B. inuences C. reects 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

9、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。答案与解析1. C语义衔接题 。mentally engaged ：动脑筋 ，思考问题 。与第二段 “.think about things they are interested in”的think about相对应 。2. A语义衔接题 。think和respond在意义上无法与effectively搭配。本句的意思是研究者证实 ，当人们处于思考状态时 ，大脑 中产生 的生物化学变化会使得大脑在诸如注意力和记忆力等认知领域的活动更为有效 。3.

10、 B逻辑关系题 。regardless of ：不管 ，不顾 ，在此表示与年龄无关 ;despite, in spite of 意为“尽管”;as to ：至于。4. D形容词辨析题 。receptive ：善于接受 (新思想 )的 ;deceptive ：欺骗的;inceptive ：期初的;perceptive ：感知的。5. D动词辨析题 。get sb. to think ：使 去思考 。make后面应该省略to ;let和push的意思都不合适 。6. B语义衔接 、介词搭配题 。此处 的意思是人们会对“感兴趣 的”事情进行思考 。此外 ，只有interested的介词搭配为in。7

11、. A逻辑关系题 。根据句意 ，一贯喜欢多思考而非少思考 的人老了以后其认知能力更加健全 。rather than ：是 (前者 )而非 (后者 );other than ：除了之外 ; instead of 和in place of均表示替代 。8. B名词辨析题 。mind ：思想感知或思维能力 。brain ： (人体器官 )大脑 ;intellect ：智力 ;mentality ：智力 ，心态 。9. C固定搭配题 。be convinced of ：相信 ，确信 。10. A固定搭配题 。put the theory to work ：将理论付诸实践 。11. B逻辑关系题 。根据

12、下文 “most of us don t need that kind of skill”可知 ，多动脑并不是指“必需” (necessarily )记住大量的信息 。12. D词组辨析题 。四个词都表示数量大。amounts of和an amount of 后接不可数名词 ;numbers of和a number of后接可数名词的复数形式 。由此可见amount和number在使用单数形式时都应在前面加不定冠词 。13. A固定搭配题 。be of interest ：有意义。“be of+名词”的结构相 当于“be+ (该名词 的 )形容词 。14. B语义衔接题。根据上文可知 ，研究者认为专 门进行记忆力训练不如让人的.大脑总是保持活跃或敏锐的状态 。15. A逻辑关系题。这里是both. and. 结构 ，表示并列关系。16. D语义衔接题 。四个选项 中只有(the) way后面少跟一个省略介词及关系代词which 的宾语从句，本句在way之后省略了in which 。另外从语义上来讲 ，选way (方式 )最合适 。17. B语义衔接及结构题 。根据后文mentally(头脑方面地 )，得知这里需要与之对应的physically (身体地 )一词 。18. A逻辑关系题 。who do是修饰those 的定语从句