界址调查的过程一般为（）。

单项选择题M：I don’t think Jim particularly likes Ids cousin.What do you say？W：You are smart.There have been hard feelings between them for years，but no one knows the details.Q：What does the woman say about Jim and his cousin？（）

A．They had a misunderstanding four years ago.
B．They really like each other very much.
C．They’ve been angry with one another for a long time.
D．They’ve never learned how to express their feelings.

单项选择题进行相对定向时，需要同名像点个数为（）。

A．3
B．4
C．5
D．6