The water gives up energy and becomes cooler____________the ice receives energy and melts.
问题描述：
The water gives up energy and becomes cooler____________the ice receives energy and melts.
A. while
B. for
选哪个?为什么?
谢谢!
答
A. while
表示对比.
水放出能量,变得冷却下来;
而
冰获得能量,进而融化.