20112年6月24日，“蛟龙号”首次下潜至7000m以下，“蛟龙号”入海后，舱壁遇到冷的海水，温度降低，内能         ，这是通过         的方式改变内能的。此时，舱壁内侧出现了大量小水珠，这是舱内水蒸气          （填物态变化名称）形成的。

____along the quiet road at forty miles an hour, and then an old man suddenly started to cross the road in front of me.

A．Driving

B．When I was driving

C．I was driving

D．Having driven