根据简介用英语句子描绘出下列人物特征。

        name              age              height(cm)            weight(kg)

       Liu Tao            13                 158                        48

        Mike               15                 165                        55

         Lily                12                 138                        39

        Mary               11                 142                        40

1、Liu Tao is                                                                                                                                        

2、Mike is                                                                                                                                            

3、Lily is                                                                                                                                              

4、Mary is                                                                                                                                            

在实际分拣作业中，分拣单位是由（）决定的，不能一概而论.