根据对话内容，完成反意疑问句。

John: Your name is Bella,    1   ?

Bella: Yes, it is.

John: You're the only child in your family,    2   ?

Bella: Yes, I am.

John: You live with your parents,    3   ?

Bella: Yes, that's right.

John: You lived in the countryside before,    4   ?

Bella: Yes, I did. My family came to live in this city a year ago.

John: Your parents were both farmers before you moved there,    5   ?

Bella: No, only my mother was.

1.                 2.                  3.                 4.                  5.              

施工方案是以工期较短的简单工程或大型复杂的分部（分项）工程或（）。

A、非专业工程为对象

B、非机械加工工艺设计为对象

C、机械加工为对象

D、专业工程为对象