—I'm going to the Great Wall.
A:What are you going to do this afternoon?
B:What are you doing?
C:Where are you going?
D:How are you going to the Great Wall?
已知双曲线x2a2-y2b2=1的一个焦点与抛物线y2=4x的焦点重合,且双曲线的离心率等于5,则该双曲线的方程为( )
如图,铅球运动员掷铅球的高度y(m)与水平距离x(m)之间的函数关系式是y=--112x2+23x+53,则该运动员此次掷铅球的成绩是( )