知识问答
最佳答案:Shall we go to the park?Sorry, I won'tSorry, I am afraid I can not.Sorry, I shal
最佳答案:We can't open the door.Can you open the door?Yes, we can.No, we can't.What can y
最佳答案:Hello,Bill,I am glad to see youOh,I am alsoWhat is your favorite food?I ah?Fruit
最佳答案:回答:1、本文要说明水资源不是取之不尽的,缺水是一个世界难题.但当前涵养水源的森林大量被毁,环境污染严重,令人忧心忡忡.2、作者举例是要说明,在水资源短缺的当下