这是什么操纵装置?()
A.灯光开关
B.空调开关
C.点火开关
D.雨刷开关
参考答案:C
A.声音的传播速度不断减小
B.声音的频率不断减小
C.声音的振幅不断减小
D.声音的音调不断降低
The older New England villages have changed relatively little_______a gas station or two in recent decades.[ ]
A. except for
B. except
C. in addition to
D. besides