A:
B:
C:
D:
A woman, with her son appeared at the far end of the street.
母鸡产的卵若是受精卵,则卵中胚胎发育的部分是( )
设抛物线C:y2=2px(p>0)的焦点为F,点M在C上,|MF|=5,若以MF为直径的圆过点(0,2),则C的方程为( )