若函数f(x)=ax(0<a≠1)在[﹣1,2]上的最大值为4,最小值为m,则m=____
—Have you got the results of the exam?
—No. All we do now is to wait.
“春种一粒粟,秋收万颗子。”据考古发现,中国最早种植粟的是( )