Lin Shuhao put all his effort _____ basketball training and _____ great progress at last.

A．into; made a

B．to; made

C．into; made

D．to; made a

下列说法正确的是

A．运动得越快的汽车越不容易停下来，是因为汽车运动得越快，惯性越大

B．自由落体运动的物体，加速度均保持不变

C．平抛运动的物体，速度、加速度每时每刻都改变

D．匀速圆周运动的物体，加速度时刻改变而速度不变