Too much rubbish will hurt our Mother Earth. How can we deal with this problem? One way is the three Rs—Reduce, Reuse and Recycle.
The first rule is reducing. It means using fewer (更少的) things. To save paper, use both sides of the paper for writing, drawing and printing. Before we buy something, think carefully. Buy what we need, not what we want.
Reusing means using things again. Don’t throw old things away easily. We can turn old things into something new. For example (例如), we can make flower vases and pen holders with old glass bottles.
We can also recycle some old things. Put recyclable old things into the recycling bin. Workers from the recycling centre pick them up by truck. Then they put them into different groups and recycle them.
1 What are the three Rs?

2 How can we use less paper?

3 What does reusing mean?

4 What do workers from the recycling centre do with the old things in the bin?

【解析】：本题为阅读理解题，可直接在原文中定位找到对应问题的答案：
1. 从文章第一段末尾可直接找到three Rs的具体内容；
2. 从文章第二段第三句可找到节约用纸的正确做法；
3. 从文章第三段第一句可找到reusing的含义；
4. 从文章最后一段的后两句可找到回收中心工人对可回收旧物品的处理方式。
【答案】：
1. They are Reduce, Reuse and Recycle.
2. We can use both sides of the paper for writing, drawing and printing.
3. It means using things again.
4. They pick the old things up by truck, then put them into different groups and recycle them.