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  3. According to the National Sleep Organization, how long should adults sleep a night? How many people do they believe have sleep

According to the National Sleep Organization, how long should adults sleep a night? How many people do they believe have sleep

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问题 According to the National Sleep Organization, how long should adults sleep a night?
How many people do they believe have sleep problems according to the report?
选项 A、About 50 percent.
B、About 76 percent.
C、About 30 percent.
D、About 25 percent.
答案D
解析 根据第三段“…76 percent said they do not believe they have sleep problem．About one fourth of adults said sleep problems have some effect on their daily lives．”可以得知，在调查的所有人中，有76％的人不相信自己有睡眠问题，约四分之一的成人说已经影响了他们的日常生活，故答案选D。
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