Expected noises are usually more than unexpected ones of the like magnitude.
A. manageable
B. controllable
C. tolerable
D. perceivable
网友回答
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 bee tolerable. manageable可处理的；可管理的；controllable可控制的；perceivable可觉察的。