Kunming is far away Beijing. [ ]
A. for
B. to
C. from
C
That day I saw some parents____at the back of the classroom,___to the teacher .
A．sitting,listened
B．sat, listened
C．sitting,listened
D．sat,listening
液压系统的功率大小与系统的（）大小有关.
A.压力
B.方向和流量
C.压力和流量
D.方向
