A:水结成冰﹣﹣分子发生变化
B:气体易被压缩﹣﹣分子间隔大
C:水加糖变甜﹣﹣分子不停地运动
D:铁块很难压缩﹣﹣分子间存在斥力
15×0.4×25=____
All the athletes _______ the nice service during the London Olympics.