Question

【题目】We should _____ the power when our TV or computer is not used.

A. turn on B. turn off

C. turn up D. turn down

Answer 1

【答案】B

【解析】试题分析：句意：我们应该在不用电脑或者电视的时候把他们关掉。A. turn on“打开”；B. turn off“关掉”； C. turn up“（声音）调大”；D. turn down“（声音）调小”。结合语境，故选B。