两个人以相同的速率同时从圆形轨道的A点出发,分别沿ABC和ADC行走,如图所示,当他们相遇时相同的量是( )
A:速度
B:位移
C:路程
D:速率
–Listen! Someone is playing ______ piano.
–Wow! What beautiful music! I like it very much