What do you do _____Flag Day? ( )
A:at
B:in
C:on
2460=____+____+____
4506=____+____+____+____
6003=____+____
已知双曲线 x2m-y2n=1(mn≠0)的离心率为2,有一个焦点恰好是抛物线y2=4x的焦点,则此双曲线的渐近线方程是( )