问题补充：
The CD is too noisy. Would you please a little?
A. turn it on
B. trun down it
C. turn it up
D. turn it down
答案：
A. turn it on
B. trun down it
C. turn it up
(答案→)D. turn it down
解析：句意：CD播放器太吵闹了。你可以调小声点吗？A打开（开关）B调小（错误表达） C调大 D调小。turn down是动副短语，所以要把代词放在中间。故选D.
