将下列单词按其所属类别归类。

schoolbag, foot, blond, hand, red, China, cap, orange, Cuba, dress,

eraser, ear, England, shirt, ruler, Japan, shoe, head, black, pencil.

1. 学习用品:                                                                                      

2. 身体部位:                                                                                      

3. 颜色名称:                                                                                      

4. 国家名称:                                                                                      

5. 服装名称:                                                                                      

（）是皮肤的最表层，内含有一种胆固醇