简答题:听材料,回答下列问题:Directions: In this section, you will hear a pass

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听材料,回答下列问题:
Directions: In this section, you will hear a passage three times. When the passage is read for the firsttime, you should listen carefully for its general idea. When the passage is read for the second time, you are required to fill in the blanks with the exact words you have just heard.Finally, when the passage is read for the third time, you should check what you have written.
Using a computer may protect against memory loss late in life, 26 you also make sure to exercise, a new study suggests, In the study, which 27 older adults, computer use and exercise reduced the risk of memory loss, whereas doing either activity alone did not. Participants who engaged in moderate physical activity and used a computer were 64 percent less likely to have mild cognitive impairment, MCI, 28 those who did not exercise and did not use a computer.
MCI is a 29 in which people experience noticeable declines in their cognitive function, including memory and language problems, but are still able to perform everyday activities. "The aging of baby boomers is projected to 30 dramatic increases in the 31 of dementia (失智)," said study researcher Dr. Yonas Geda, a physician scientist. "As frequent computer use has become 32 common among all age groups, it is important to examine how it relates to aging and dementia. "
However, the study relied on participants to remember how often they had exercised or used a computer in the past year. More studies that follow people forward in time to 33 the results will be needed. Some previous studies have found a link between exercise and a reduced risk of MCI. While others have linked 34 activities, such as reading books, playing games or using a computer. But no studies have examined the combined effects of exercise and computer use. Participants were asked whether they had engaged in 35 physical activities and how frequently they participated in the activities. They were also asked about the extent of their computer use.
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