一辆汽车停在路面上，下列关于汽车和路面受力的说法，正确的有（　　）

A．地面受到了向下的弹力，是因为地面发生了形变

B．汽车受到了向上的弹力，是因为汽车发生了形变

C．地面受到了向下的弹力，是因为汽车发生了形变

D．汽车受到了向上的弹力，是因为地面发生了形变

It is implied in the passage that ______.

A．parents can never hope to teach their children new sounds

B．children no longer imitate people after they being to speak

C．even after they have learnt to speak children still enjoy imitating

D．children who are good at imitating learn new words more quickly