单选题
From the text, we can infer that if one can't fall asleep, it might be because of ______.
A、
the quality of his bedroom
B、
eating before going to bed in two hours
C、
overhappiness or sorrow
D、
he didn't take a warm bath before going to bed
【正确答案】
C
【答案解析】
[分析] 本题考查理解全文。阅读全文，注意文章中提到的几种失眠的可能性，A、B、 D都是对原文的错误描述，只有C与原文相符。
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