Expected noises are usually more than unexpected ones of the like magnitude.A. manageable

问题补充：

Expected noises are usually more than unexpected ones of the like magnitude.

A. manageable

B. controllable

C. tolerable

D. perceivable

答案：

A. manageable

B. controllable

(答案→)C. tolerable

D. perceivable

解析：本题译文：料想到的嗓音通常情况下比起等量的意外嗓音来说是可以忍受的。tolerable(=fairly good, not too bad)可忍受的：The pain has become tolerable. manageable可处理的；可管理的；controllable可控制的；perceivable可觉察的。