开口向下的抛物线y=（m2﹣2）x2+2mx+1的对称轴经过点（﹣1，3），则m=( )
﹣1
大米蛋白的营养品质体现在哪里？
I don’t understand _________ that everything’s fine when it’s not.
A．how can he say
B．can he say how
C．he can say how
D．how he can say
