解决水资源空间分布不均的措施是( )
A:植树造林
B:建防洪大堤
C:跨流域调水
D:兴修水库
As the smallest child of his family, Alex is always longing for the time _______ he should be able to be independent.
促成俄国十月革命条件成熟的客观因素是( )
很多俄罗斯人爱喝酒,尤其爱喝伏特加等烈性酒,这与当地怎样的气候特点密切相关?( )