2020年7月大学英语四级听力真题第1套-Passage3

题目：
22.
A) By recording the time people spend on TV.
B) By tracking people's living habits.
C) By using memory and fluency tests.
D) By scanning people's brains.

23.
A) Watching television for hours.
B) Playing video games.
C) Reading books and magazines.
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.

原文：
Passage 3
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. Scientists 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 of around 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. The research team say they believe "alert-but-passive" nature of television watching may be creating stress on the mind, which contributes to memory decline.
Older people who watch more television are also less likely to undertake activities known to preserve mental functioning such as reading, or interactive screen-based pursuits such as using the internet or playing video games. The researchers say that television viewing may be a risk factor for Alzheimer's disease, but more research was needed to establish a link.
While watching television may have educational benefits and relaxation benefits, 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 limit the amount of TV watch each day and undertake some healthy hobbies.
Questions 22 to 25 are based on the passage you have just heard.
Question 22: By what means does scientist at University College London measure memory loss?
Question 23: What contributed to memory decline in the participants?
Question 24: What did the researchers say about their finding concerning the link between TV viewing and Alzheimer's disease?
Question 25: What do the researchers suggest older people do?

答案：
22. C
23. A
24. A
25. B