你一定很好奇,气球怎么会“闹别扭”呢?别急,让我来告诉你吧!1我先准备好实验要用的气球、线和绒布。2然后,我把两个气球吹成差不多大小。3接着,我用线把气球系在一起。这时,我发现这两个气球像好朋友似的紧紧地靠在一起。4紧接着,我用绒布轻轻地摩擦气球表面。5最后,我提起系着气球的线,奇怪的事情发生了!两个被摩擦过的气球居然离得远远 You must be very curious, how can a balloon “do not worry ”? Do not worry, let me tell you! 1 I first ready to experiment with balloons, lines and flannelette. 2 Then I blow two balloons to about the same size. 3 Then, I tie the balloons together. At this moment, I found that these two balloons are closely together like friends. 4 Then I gently rub the surface of the balloon with velvet. 5 Finally, I raised the line tied to the balloon, a strange thing happened! The two balloons have been rubbed actually far away