题目内容：
According to the last paragraph, the fourth way is "of a different kind" because（ ）
the first three ways can increase the water supply, while the fourth one can't
the first three ways can make a better use of water, while the fourth one can't
the first three ways is technology-based, while the fourth one is market-based
the first three ways can't balance the supply and demand of water, while the fourth one can
参考答案：【答案仅供学习，请勿对照自行用药等】