牛

　　牛                                                                牛儿,牛儿你真好,                                                               帮人耕地的好水牛,                                                               挤出牛奶的好奶牛，                                                               拖拉东西的好黄牛 ，                                                                   牛儿，牛儿帮人做事的好牛儿。