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Watching more than 3 hours of television a day doubles memory loss in older people, a new study of more than 3,000 adults suggests. (22)Scientist at University College London used memory and fluency tests on the same group of people 6 years apart. They found that those who watched on average less than 3 hours television a day showed a decline ever round 4 to 5 percent, while those who tended to watch more than 3 hours a day declined by an average of 8 to 10 percent. (23)The research team say they believe the alert but passive nature of television watching maybe creating stress on the mind, which contributes to memory decline. Older people who watch more television are also less likely to undertake activities knowing to preserve mental functioning, such as reading or interactive screen base pursuits, such as using the internet or playing video games. (24)The researchers say that television viewing maybe a risk factor for all Alzheimer's disease, but more researches is needed to establish a link. While watching television may have educational benefits and relaxation benefits, (25)the researchers advise that adults over the age of 50 should try and ensure that television viewing is balanced with other contrasting activities. If you're concerned that the amount of television you're watching could have a negative impact on your health, you should eliminate the amount of TV you watch each day and undertake some healthy hobbies.
未听先知
预览四道题各选项,由选项中反复出现的TV、television和Alzheimer's disease等词可以初步推测,短 文内容与看电视和阿尔兹海默症有关。 第22题都是以by开头的介词短语,说明本题考查的是做某事的方 式或者方法。第23题选项均为不同类型的休闲活动,听录音时要留意相关介绍。 第24题各选项均围绕看 电视和阿尔兹海默症之间的关系展开,听录音时注意明确两者之间的联系。第25题各选项均以动词原形 开头,由no more than balance. educational和take more physical exercise等词可以推测,本题考查的是某种对身体有益的忠告或建议。
详解详析
22. By what means does scientist at University College London measure memory lost?
详解C)。短文开头提到,一项针对3000多名成年人的新研究分析了看电视的时长对老年人记忆 力衰退的影响。伦敦大学学院的科学家们对同一组人进 行了记忆和流利度测试。因此答案为C)。
23. What contributed to memory decline in the participants?
详解A)。短文中提到,研究小组表示看电视“被动警觉”的特性可能会给大脑造成压力,从而导致 记忆力衰退。因此答案为A)。
24. What did the researchers say about their finding concerning the link between TV viewing and this disease?
详解A)。研究人员表示,看电视可能是导致老年痴呆症的一个风险因素,但需要更多的研究来确 定两者之间的联系。因此答案为A)。
25. What do the researchers suggest older people do?
详解B)。短文最后提到,研究人员建议50岁以上的成年人应该努力确保在看电视和其他不同活 动之间寻求平衡。因此答案为B)。