(2013·郑州高中毕业班第一次质量预测)—Did you enjoy meeting your old schoolmates at the party last week?

—Yes, I did. We ________ each other since we graduated from college.

A．haven't seen

B．didn't see

C．hadn't seen

D．wouldn't see

下列投资项目中，属于基础性建设项目的是( )。

A．博物馆

B．综合性商业大楼

C．大型水利工程

D．体育馆