长江干流上正在建设的世界上最大的水利枢纽工程是[ ]

A．葛洲坝          

B．三峡          

C．小浪底          

D．三门峡

I will never ______ the experiences of the four years at Howard University, though there were unhappy encounters.

A．discharge

B．recharge

C．discard

D．dispose