题目

When an empty parking spot appears before us, many of us would see it for what it is - a place that could be filled with cars and trucks. But to eco-engineer Shubhendu Sharma, it's a space to be planted with trees and turned into a forest.What's more, he believes these tiny forests can grow anywhere, including our most crowded and polluted cities where they can help maintain clean air and water and provide habitat for animals and insects. “A forest is not an isolated piece of land where animals live together,” says Sharma. “A forest can be a complete part of our urban existence.” Most 已知平面区域由以、、为顶点的三角形内部和边界组成.若在区域 上有无穷多个点可使目标函数取得最小值，则