根据例词，写出三个同属一类的词。

1. bag                                                         

2. my                                                         

3. in                                                         

4. goat                                                      

5. meow                                                        

若此患者为恶性卵巢肿瘤，手术中不应

A．仔细探查盆腹腔
B．留取腹水找癌细胞
C．术中肉眼观察肿瘤性状不好，应送冰冻
D．病人年轻可仅行一侧附件切除术
E．为彻底治疗应行肿瘤细胞减灭术