A:x> y
B:x<y
C:x= y
D:x≤y
如图,已知A(﹣2,4),B(4,2),C(2,﹣1)
在△ABC中,若a=n2﹣1,b=2n,c=n2+1,则△ABC是( )
We all like ______ to music and playing games.