A:瓦解宗法体系
B:防止地方势力膨胀
C:健全地方行政机构
D:完善地方监察制度
What's the relationship(关系) between the two speakers?
— What would you do if you _______ a million dollars? — I would give it to charity.
函数f(x)=2x-x2,(0≤x≤3)x2+6x,(-2≤x<0)的值域是 ()