Look, read and choose. 选择画线词语的对应词，将序号写在括号里。

A. father

B. brother

C. grandma

D. man

E. student

⒈This is not a teacher. She's a ____.

⒉This is not a woman. He's a ____.

⒊This is not my grandpa. She's my ____.

⒋This is not my sister. He's my ____.

⒌This is not my mother. He's my ____.

如图表示细胞发生的一系列变化过程，图中过程A和过程B分别表示（　　）