某人在静止的湖面上竖直上抛一小铁球，小铁球上升到最高点后自由下落，穿过湖水并陷入湖底的淤泥中。不计空气阻力，取向上为正方向，在如图所示的v－t图象中，最能反映小球运动过程的是[ ]

A．

B．

C．

D．

-Good morning, Mr Brown. Would you please tell me the result of the exam?

-OK. You did quite welt. You made __________ mistakes.[ ]

A. a few

B. few

C. little

D. a little