A:电解水生成H2和O2﹣分子分成原子,原子重新组合成分子
B:吹破气球﹣分子变大
C:液氧和氧气都能助燃﹣同种物质的分子化学性质相同
D:墙内开花墙外香﹣分子在不断运动
I ______ have worried before I came to the new school, for my classmates here are very friendly to me.
下列省级行政区中,水能、地热能、太阳能都很丰富的是( )
请回答下列问题: