—Tom, what about going for a picnic in the national park tomorrow?

—________. It is just opened to the public. I am looking forward to it.[ ]

A. Up to you  

B. That's all right

C. No kidding  

D. Sounds fantastic

下列变化中，吸收的热量是用于克服分子间的作用力的是（　　）

A．加热金属铁使之熔化

B．加热晶体碘使之变成蒸气

C．加热碘化氢使之分解

D．加热金刚石使之熔化