笔比球跳得高?说来你肯定不信,做做下面的实验你就知道了图1步骤:1.准备好材料实心皮球一个,圆珠笔一支(如图1)。2.拿一个实心皮球和一支圆珠笔,把笔插进球里,要插得足够深,也不要把整个笔头插进去,以手拿笔时球不会掉下来为合适(如图2)。3.一手拿笔,手臂伸直,插着笔的球朝下(注意:不要在灯底下做这个游戏,以免发生事故),准备好了,松手。图3图2 Pen is higher than the ball jump? To be sure you do not believe, do the following experiment you know the steps in Figure 1: 1. Prepared a solid ball of material, a ball-point pen (Figure 1). 2. Take a solid ball and a ballpoint pen, the pen inserted into the ball, to be inserted deep enough, do not insert the entire written in to take the pen when the ball will not fall off as appropriate (Figure 2) . 3. Hold the pen with one hand, arms straight, pen down the ball (Note: Do not do this game under the lamp to avoid accidents), ready, let go. Figure 3 Figure 2