教师的提问、讲解、讲述、演示中的语言都要避免成人化语言和专业化术语，以确保与幼儿的有效沟通。
参考答案：对
— Jack, I lost your ball at school. I suppose I should pay for it.
— Oh. ______. It was just an old ball anyway. [ ]
A. Take it easy
B. By no means
C. You got it
D. Forget it
有一段路，小汽车行完全程需要8小时，大客车行完全程需要12小时，小汽车与大客车的速度比是______．
