If you ______ the chat room ten minutes ago, you _______ what we were talking about.

A．have joined ; will know

B．had joined ; would have known

C．should join ; would know

D．would join ; have known

房地产估价方法除比较法、成本法、收益法三大基本方法外，还有（）。

A.假设开发法

B.长期趋势法

C.路线价法

D.基准地价修正法