单选题 Kate,could you______the radio a bit? Your father is sleeping now.
[A] turn down [B] turn off [C] turn up

【正确答案】 A
【答案解析】考查固定搭配。turn down(将电器等的音量)调低;turn off关上,关掉(电器);turn up调大(音量等),突然出现或发生。由后一句的意思可知,这里指将收音机的声音调小,因此选[A]。