Parents ___ much importance to education. They will do their best to give their children that priceless gift.     

A．attach

B．pay

C．link

D．apply

图中的情景表示了力的作用效果，其中图　  　主要表示力能使物体的运动状态发生改变；图　  　主要表示力能使物体发生形变．（选填：“A”、“B”、“C”或“D”）