设函数f(x)=ax2+b(a≠0),若∫03f(x)dx=3f(m),则m=( )
— What bad weather! The ground is covered with much snow.
—And it may result in traffic jams.
八年级2班围绕“1950年开始的土地改革运动和改革开放后实行的家庭联产承包责任制的相同点”进行合作学习,经过讨论展示了如下结论,不正确的是( )