A:民族主义
B:社会主义
C:自由主义
D:法西斯主义
我国四大民间故事是什么?
氯化钠是一种重要的工业原料,有着广泛的用途.
生态系统的自动调节能力主要取决于( )
——Excuse me, haven't you learned the new law? Everyone in a car must wear the seat belt.——Sorry, we won't do that again.