已知a,b∈R,下列命题正确的是( )
A:若a>b,则|a|>|b|
B:若a>b,则1a<1b
C:若|a|>b,则a2>b2
D:若a>|b|,则a2>b2
—________. The beaches there are very beautiful and we also enjoyed some fresh seafood.
如图所示,一艘炮艇沿长江由西向东快速行驶,在炮艇上发射炮弹射击北岸的目标.要击中目标,射击方向应( )
我国实施南水北调的主要原因是( )
—________.