A:太阳辐射
B:海陆热力性质的差异
C:气压带和风带位置的季节移动
D:地形差异
yellow window____
—Is Jay on his way to the cinema?
—I regret ______ you that he can't come today.
读图,回答下题.
【经典赏析】教材中介绍了拉瓦锡用定量的方法研究了空气的成分(实验装置如图1)。