f（x）=（m﹣1）x²+2mx+3为偶函数，则f（x）在区间（2，5）上是（   ）

阅读理解
    Mr. Black is American, but he is in Canada now. He is a tall man with funny glasses. He works in a big city but lives in a town far away. He lives on the twentieth floor of a building. Every morning he gets up early. Then he gets into the lift and it takes him down to the first floor. He runs to the bus stop and catches the early bus. It usually takes him about two hours to get to the factory by bus. Then he gets off the bus and walks into the workshop(车间) quickly. He starts his work at eight in the morning.

在肾单位的组成结构中，不包括（　　）

为改变哈尔滨市的交通状况，在大直街拓宽工程中，要伐掉一棵树AB，在地面上事先划定以B为圆心，半径与AB等长的圆形危险区，现在某工人站在离B点3米远的D处，从C点测得树的顶端A点的仰角为60°，树的底部B点的俯角为30°，那么距离B点____米远，才是安全区域．（结果保留整数， $\sqrt{3}$ ≈1.732）

  2010年我国进行了第六次人口普查，根据图中的调查数据，完成下面小题。