题目内容：
According to Paragraph 2, which of thefollowing may lead to insomnia?
A．Reading a book for relaxation beforebedtime. A．Reading a book for relaxation before bedtime.
B．Lowering lights one hour before bedtime.
B．Lowering lights one hour before bedtime.
C．Drinking some warm milk before bedtime.
C．Drinking some warm milk before bedtime.
D．Listening to rock music before bedtime.
D．Listening to rock music before bedtime.
参考答案：
答案解析：