①a+b<ab
②|a|>|b|
③a<b
④ ba + ab >2.
A:1个
B:2个
C:3个
D:4个
Which of the following sentences is right?
世界上唯一独占一块大陆的国家是 ( )
受地形地势的影响,亚洲河流流向的特点是( )