Tom, could you your CD player a little bit? Dad is sleeping now.
A. turn on
B. turn off
C. turn up
D. turn down
网友回答
A. turn on
B. turn off
C. turn up
(答案→)D. turn down
解析：根据句意爸爸在睡觉，应该请你把CD调小一点儿意思才更符合，turn down表示
此意，故选D,其他短语表示的意思分别为turn on 打开，turn off关上，turn up
调大，都不能选。