一元二次方程x2﹣5x﹣6=0的根是( )
A:x1=1,x2=6
B:x1=2,x2=3
C:x1=1,x2=﹣6
D:x1=﹣1,x2=6
China has ___________ population in the world.
下列有关糖类的说法,错误的是( )