题目

—How much are the pants(裤子)? — ______ twenty dollars. A . It has B . It is C . They have D . They are 答案：D（2013?武鸣县模拟）甲数=2×2×3×5，乙数=3×3×5×2，这两个数的最小公倍数是（　　）A．60B．180C．90