A:the; the
B:a; the
C:the; a
D:a; /
方程x3-6x2-15x-10=0的实根个数是( )
chōu ti
shū jí
kǒng bù
xī wàng
____
guāi qiǎo
hóng máo
fēng zheng
xiá zi
I have some biscuit.
____应改为____