【题目】Questions 22 to 25 are based on the passage you have just heard.22. A) By recording the time people spend on TV. C) By using memory and fluency tests.B)By tracking people'sliving habits.D) By scanning people's brains.23. A) Watching television for hours.C) Reading books and magazines.B)Playing video games.D)Surfing the Internet.24. A) Television viewing may be a potential factor for Alzheimer's disease.B) Alzheimer's patients tend to watch television more than 3 hours a day.C) Some research has confirmed the link between them.D)Television watching is beneficial to Alzheimer's patients.25. A) Watch television no more than 3 hours each day.B) Balance television viewing with other contrasting activities.C) Watch some educational TV programs.D) Take more physical exercise.

【解析】Questions 22 to 25 are hased on the passage you have just heard.Watching more than three hours of television a day doubles memory loss in older people, a new study ofmore than 3,000 adults suggests. (22)Scientists at University College London used memory and fluency tests onthe same group of people six years apart. They found that those who watched on average less than three hours'television a day showed a decline of around four to five percent, while those who tended to watch more thanthree hours a day declined by an average of eight to ten percent. (23)The research team say they believe thealert-but-passive" nature of television watching may be creating stress on the mind, which comtributes tomemory decline. Older people who watch more television are also less likely to undertake activities known topreserve mental functioning such as reading, or interactive screen-based pursuits such as using the Internet orplaying video games. (24)The researchers say that television vicwing may be a risk factor for Alzheimer'sdisease, but more research is needed to establish a link. While watching television may have cducationalbenefits and relaxation benefits, (25)the rescarchers advise that adults over the age of 50 should try and ensurethat television viewing is balanced with other contrasting activities. If you're concerned that the amount oftelevision you're watching could have a negative impact on your health, you should limit the amount of TV youwatch each day and undertake some healthy hobbies.答案详解22. By what means did sciemtists at University压力,从而导致记忆力衰退College London measure memory loss?24. What do the researchers say about their findingC)【精析】细节辨认题。短文开头提到,一项针对concerning the link between TV vicwing and3.000多名成年人的新研究分析了看电视的时Alzheimer's disease?长对老年人记忆力衰退的影响。伦敦大学学院A)【精析】细节辨认题,研究人员表示,看电视可能的科学家们对同一组人进行了记忆和流利度是导致老年痴呆症的一个风险因素,但需要更多测试的研究来确定两者之间的联系23. What contributed to memory decline in the25. What do the researcherssugget older people do?partcipants?B)【精析】细节辨认题,短文最后提到,研究人员建A)【精析】细节辨认题。短文中提到,研究小组表示议50岁以上的成年人应该努力确保看电视和其看电视“警觉但被动”的特性可能会给大脑造成他不同活动之间的平衡