听力原文：

M: Jessica, we’ve been waiting for you!

G: Sorry, I’m late for dinner, Dad. I was looking at the website for a great organization called Living Green.

M: Living Green? What does that mean? I don’t even like that color.

G: It means taking responsibility for protecting the Earth. We had a guest speaker today in science class, and he mentioned some simple ways to reduce our energy usage and protect the Earth.

M: Like what?

G: OK, well, first of all, he said we should cut down on driving. So we’d better walk, ride bicycles, or take public transportation.

M: I would do those things if I could.

G: Another idea was to turn off unnecessary lights. Look at this house — lights on in every room! He also advised us to wash our clothes in cold water.

M: Cool! I never realized how simple it could be to protect the Earth. What did you call it? Living Green?

G: Yeah! The speaker said that if everyone did even one of these things every day, it would do a lot to reduce global warming.

M: I agree. That will also save money on the electric bill.

Question: What does “Living Green” mean?

参考答案：

It means taking responsibility for protecting the Earth.