一 Hi, Diana, how was your summer holiday?
一 ! I enjoyed myself in the sea very much.
A:Good idea
B:Wait a minute
C:That's too had
D:Pretty good
在Rt△ABC中,∠C=90°,BC=a,AC=b,且3a=4b,则∠A的度数为( )
党的基本路线是党和国家的生命线,是实现科学发展的政治保证。我们党制定基本路线的根本依据是( )