He always asks _______ questions! I don't like him at all.[ ]

A. too many

B. too much

C. many too

D. much too

下列情况中，物体运动状态发生改变的有（　　）

A．物体在斜面上匀速下滑

B．在粗糙水平面上运动的物体逐渐停下来

C．物体以大小不变的速度通过圆弧轨道

D．物体以恒定的加速度做自由落体运动