如图所示,绕过定滑轮的轻绳拴在小车上,另一端吊一物体,若小车沿水平向前匀速运动,则物体的运动状态为( )
A:向上做加速运动
B:向上做匀速运动
C:向上做减速运动
D:无法确定
地形以高原为主的大洲是( )
Before I watched ____ 3-D film Life of Pi, I had never seen ______ wonderful film like this.