— Bad luck. They didn't offer the job to me. 

—  ______ You've been well prepared for the interview.

[      ]

A. So what?

B. What if?

C. How come?

D. What about?

科学发展观的核心和实质是（）

A.以人为本

B.以经济建设为中心

C.解放和发展生产力

D.满足人民日益增长的物质文化需要