60.【答案】C

　　【解析】细节理解题。根据The more roads and parking lots we pave, the less water can flow into the ground to become groundwater可知选C。

　　61.【答案】B

　　【解析】细节理解题。根据第一段话good management can help to make sure there is enough water to meet our basic needs及下文描述，可知要满足我们的用水需求需要很大的努力，故选B。

　　62.【答案】D

　　【解析】细节理解题。根据You can take steps to save water in your home及本段描述，可知本段主要是针对如何节水提出建议，选D。

　　63.【答案】D

　　【解析】这篇文章主要描述了人类活动与水资源的关系，告诉我们如何节约用水，故选D，人类活动如何影响我们的用水供应。

　　D

　　For many parents, raising a teenager is like fighting a long war, but years go by without any clear winner. Like a border conflict between neighboring countries, the parent-teen war is about boundaries: Where is the line between what I control and what you do?

　　Both sides want peace, but neither feels it has any power to stop the conflict. In part, this is because neither is willing to admit any responsibility for starting it. From the parents’ point of view, the only cause of their fight is their adolescents’ complete unreasonableness. And of course, the teens see it in exactly the same way, except oppositely. Both feel trapped

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