在城镇建设中，提倡用透水材料铺设“可呼吸地面”代替不透水的硬质地面。采用“可呼吸地面”之后，图中四个环节的变化符合实际的是

A．a增加

B．b增加

C．c减少

D．d减少

The naughty boy（）in his shoes when he saw the cane in his father's hand.

A.shivered

B.trembled

C.frightened

D.feared