(单选题)
From the article, which of the following may NOT cause sleeping problems?
A.Reading a book late at night.
B.Having sad or angry feelings.
C.Playing with digital devices before sleeping.
D.Being under strong stress about their life or work.
参考答案:A
参考解析:
细节理解题。根据文中最后一段描述,可知BCD选项都是引起睡眠问题的主要原因。故选A。
知识点: