问题
选择题
Remember to your mobile phone when the plane takes off.
A. turn on B. turn down C. turn off
答案
答案：C
词义辨析。turn on 打开；turn down关小，调低；turn off关闭。句意：当飞机起飞时记得关掉手机。所以选C。
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Remember to your mobile phone when the plane takes off.
A. turn on B. turn down C. turn off
答案：C
词义辨析。turn on 打开；turn down关小，调低；turn off关闭。句意：当飞机起飞时记得关掉手机。所以选C。