—Were you all frightened at the sound of the fire alarm?
— No. Everyone stayed and obeyed the police.
A. quiet
B. calm
C. silent
D. peaceful
网友回答
A. quiet
B. calm
(答案→)C. silent
D. peaceful
解析：词义辨析. A. 安静的 B. 冷静的 C.沉默的 D. 平静的.句意:你们都害怕火警的声音 吗?——不。每个人都保持沉默听从警察的指挥。故选C。