The radio is too noisy please .A. turn it onB. turn it upC. turn it backD. turn it down

问题补充：

The radio is too noisy，please .

A. turn it on

B. turn it up

C. turn it back

D. turn it down

答案：

A. turn it on

B. turn it up

C. turn it back

(答案→)D. turn it down

解析：A.打开 B. 打开 C.阻挡 D. 减小；调低。句意：收音机太吵了，请把它开小声一点。故选D。