小贝拉和生气球

小贝拉要生气啦，                                                                                                                                                                   

     气得冒火，                                                                                                                                                                     

    气得要打人。                                                                                                                                                             

妈妈给了小贝拉几个小球。                                                                                                                                             

  嗯，这是做什么用的呢？