单词归类，根据所给单词按所属类别进行归类。

soldier 　honey    insect    subway    teacher    lettuce    author    ant    airplane    monkey   

train    fisherman    dumpling    UFO    programmer    shark    candy    seal    yogurt    taxi

动物类：                                                                                                                     

职业类：                                                                                                                     

食品类：                                                                                                                     

交通工具类：                                                                                                              

乳腺癌晚期的局部表现为______、______、皮肤溃疡。