2. 外语
  3. Sleep problems can seriously affect one’s quality of life. The number of older Americans with sleep problems is not small.

Sleep problems can seriously affect one’s quality of life. The number of older Americans with sleep problems is not small.

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问题 Sleep problems can seriously affect one’s quality of life.
The number of older Americans with sleep problems is not small.
选项 A、Right
B、Wrong
C、Not mentioned
答案A
解析 短文的第三段说，研究者发现有超过半数的美国老年人有睡眠问题。
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