2016•连云港) —Shall we take a car?
—No, we . It's only five minutes' walk.
A:can't
B:mustn't
C:needn't
D:couldn't
测量国际单位制规定的三个力学基本物理量分别可用的仪器是下列哪一组( )
梦:____、____ 森:____、____
拉:____、____ 灵:____、____