試題詳解

46
(A)At noise levels exceeding 90 decibels, even the best construction cannot keep the sound of pounding bass inside.
(B)Some suggest that new restrictions on clubs be imposed to keep indoor noise levels to 90 decibels and avoid annoying neighbors.
(C)One possible method is through devices that flash amber once the noise approaches a set level.
(D)Who knows how many people are similarly avoiding clubs and bars because they are fed up with yelling at each other to be heard?