There only one doctor in the hospital today.
A:is
B:has
C:have
D:are
Who the wonderful story?
M、N都是质数,M+N的和小于50,且是7的倍数,如果M+N又是奇数,那么N×M 可能是( )
— How do you like the pants?
— I'll ____ it.
直线l过抛物线C:x2=4y的焦点且与y轴垂直,则l与C所围成的图形的面积等于( )