1. Dialogue 1. Why is David’s mom angry? 2. How much does your family usually pay for the electricity bill? 3. What can David’s family do to cut down on the electricity bills?

2. 對話內容  Mom: David, why did you leave the light and the computer on when you were sleeping?  David: I’m so sorry, Mom. I was so tired that I forgot again.  Mom: How many times have I told you about saving energy ? The electricity bills cost us more and more money. Look at this one. 5000 dollars!

3.  David: I can’t believe it. It’s too much.  Mom: What’s worse, we still have other bills to pay. The prices of things we need is getting higher and higher. We really need to figure out some good ways to cut down the bills.  參考 : 和地球做朋友 — 環保教育一起來－詹麗馨  http://cet.cavesbooks.com.tw/htm/m060724.htm