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  3. The popular notion that older people need less sleep than younger adults is a myth, scientists said yesterday. While elderl

The popular notion that older people need less sleep than younger adults is a myth, scientists said yesterday. While elderl

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问题     The popular notion that older people need less sleep than younger adults is a myth, scientists said yesterday.
    While elderly people【B1】______to sleep for fewer hours than they did when they were younger, this has a(n) 【B2】______effect on their brains performance and they would benefit from getting more, according to research.
    Sean Drummond, a psychiatrist(心理医生)at the University of California, San Diego, said that older people are more likely to suffer from broken sleep, while younger people are better at sleeping【B3】______straight through the night.
    More sleep in old age, however, is【B4】______with better health, and most older people would feel better and more【B5】______if they slept for longer periods, he said.
    "The ability to sleep in one chunk(整块时间)overnight goes down as we age but the amount of sleep we need to【B6】______well does not change, " Dr. Drummond(old the American Association for the Advancement of Science conference in San Diego.
    "It’s【B7】______a myth that older people need less sleep. The more healthy an older adult is, the more they sleep like they did when they were【B8】______. Our data suggests that older adults would benefit from【B9】______to get as much sleep as they did in their 30s. That’s【B10】______from person to person, but the amount of sleep we have at 35 is probably the same amount as we need at 75. "
A. alert
B. associated
C. attracting
D. continuing
E. definitely
F. different
G. efficiently
H. function
I. mixed
J. negative
K. tend
L. younger
【B7】
选项
答案E
解析 空格所在句子不缺少基本成分，由此判断空格处应填入充当状语的副词。根据上下文，下一句话指出，越健康的老年人的睡眠时间越像他们年轻时那样长，这是对前一句的解释，说明老年人需要较少的睡眠时间的说法是不正确的，空格处只能填入加强语气并且表示肯定意义的副词。由此确定definitely“明确地，绝对地”为本题答案。
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