2018年6月四级阅读考试第一套解析
2018-12-01 17:39 | 来源：英语学习网站 | 编辑：学英语
2018年上半年全国大学英语四六级考试于6月16日进行，新浪教育24小时全程关注，，为你带来第一手四六级考试资讯。以下为英语四级阅读详解：
Passage One Copyright www.yingyuzhijia.com
Questions 46 to 50 are based on the following passage。
Losing your ability to think and remember is pretty scary。 We know the risk of dementia （痴呆） increases with age。 But if you have memory slips， you probably needn’t worry。 There are pretty clear differences between signs of dementia and age-related memory loss。
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After age 50， it’s quite common to have trouble remembering the names of people， places and thing quickly， says Dr。 Kirk Daffner of Brigham and Woman’s Hospital in Boston。 Copyright yingyuzhijia.com
The brain ages just like the rest of the body。 Certain parts shrink， especially areas in the brain that are important to learning， memory and planning。 Changes in brain cells can affect communication between different regions of the brain。 And blood flow can be reduced as blood vessels narrow。 Copyright yingyuzhijia.com
Forgetting the name of an actor in a favorite movie， for example， is nothing to worry about。 But if you forget the plot of the movie or don’t remember even seeing it， that’s far more concerning， Daffner says。 Copyright yingyuzhijia.com
When you forget entire experiences， he says， that’s “a red flag that something more serious may be involved。” Forgetting how to operate a familiar object like a microwave oven， or forgetting how to drive to the house of a friend you’ve visited many times before can also be signs of something going wrong。 Copyright www.yingyuzhijia.com
But even then， Daffner says， people shouldn’t panic.There are many things that can cause confusion and memory loss， including health problems like temporary stoppage of breathing， high blood pressure， or depression， as well as medications like antidepressants。 Even over-the-counter remedies like antihistamines can contribute to memory loss。 内容来自www.yingyuzhijia.com
And the best defense against memory loss is to try to prevent it by building up your brain’s cognitive （认知的） reserve， Daffner says。 Copyright www.yingyuzhijia.com
“Read books， go to movies， take on new hobbies or activities that force one to think in novel ways，” he says。 In other words， keep your brain busy and working。 And also get physically active， because exercise is a known brain booster。 内容来自www.yingyuzhijia.com
46。 Why does the author say that one needn’t be concerned about memory slips？
A） Not all of them are symptoms of dementia。
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B） They occur only among certain groups of people。 内容来自www.yingyuzhijia.com
C） Not all of them are related to one’s age。 Copyright yingyuzhijia.com
D） They are quite common among fifty-year-olds。 Copyright www.yingyuzhijia.com
47。 What happens as we become aged according to the passage？ Copyright www.yingyuzhijia.com
A） Our interaction skills deteriorate。 内容来自www.yingyuzhijia.com
B） Some parts of our brain stop functioning。
C） Communication within our brain weakens。 内容来自www.yingyuzhijia.com
D） Our whole brain starts shrinking。 Copyright www.yingyuzhijia.com
48。 Which memory-related symptom should people take seriously？ Copyright www.yingyuzhijia.com
A） Totally forgetting how to do one’s daily routines。
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B） Inability to recall details of one’s life experiences。
C） Failure to remember the names of movies or actors。 Copyright yingyuzhijia.com
D） Occasionally confusing the addresses of one’s friends。
49。 What should people do when signs of serious memory loss show up？
A） Check the brain’s cognitive reserve。 C） Turn to a professional for assistance。
C） Stop medications affecting memory。 D） Exercise to improve their well-being。
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50。 What is Dr Daffner’s advice for combating memory loss？
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A） Having regular physical and mental checkups。 本文来自英语之家
B） Taking medicine that helps boost one’s brain。 内容来自www.yingyuzhijia.com
C） Engaging in known memory repair activities。 内容来自www.yingyuzhijia.com
D） Staying active both physically and mentally。
Copyright yingyuzhijia.com
46。 A） Not all of them are symptoms of dementia
本文来自英语之家
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