“墙内开花墙外香”是 ______现象，说明分子在 ______．
“墙内开花墙外香”是分子运动的结果，即扩散现象．
故答案为：扩散，不停地做无规则运动．
用温度多高的水洗澡最好？（）
A、35度
B、40度
C、45度
D、50度
WHO, together with the medical workers in the different parts of the world, _____ trying to find a way to
prevent the disease H1N1from _____. [ ]
A. is; spreading
B. are; spreading
C. is; spread
D. are; spread
