a、b在数轴上的位置如图所示,则下列式子正确的是( )
A:a+b>0
B:a+b>a﹣b
C:|a|>|b|
D:ab<0
在△ABC中,A:B:C=1:2:3,则a:b:c等于( )
There isn't any difference between the two. I really don't know _______.