反弹；迅速恢复
A: cease
B: up
C: bounce
D: back
A: cease
B: up
C: bounce
D: back
举一反三
- bounce back A: 迅速恢复 B: 迅速返回 C: 弹回来 D: 弹过去
- Bounce是（ ）动作。 A: 摇摆类 B: 旋转类 C: 滑步类 D: 反弹类
- He was walking ( ) along the corridor. A: back up B: back down C: back and forth D: back of
- You can' t ______your promise; all the people here are depending on you. A: back off B: back up C: back on to D: back out of
- 45（） A: up B: down C: off D: back