将下面对话补充完整

Tom: Hello!  Nice to meet you!

Mike:   1  !

Tom: I'm Tom.   2  ?

Mike: I'm Mike.

Tom: Oh, Mike, do you like movies?

Mike: Yes.I do.

Tom:   3  ?

Mike: Oh,  no.  They are too scary.I like action movies.

Tom: Really?   4  ?

Mike: Yes, Jackie Chan is my favorite actor.

Tom:   5  ?

Mike: Yes,I like his movies.  They are very exciting and interesting.

下列选项中，不属于房地产投资风险特征的是( )。

A．客观性

B．不确定性

C．可测性

D．损益单一性