unit 3 life in the future
导读：低碳生活的理念已经逐渐走入人们的生活。你低碳了吗？你有什么低碳环保的好建议呢？
task：what do you think about the low－carbon way of life？
as people are the major source of greenhouse gas emissions, changing our behavior is crucial to tackling climate change. in china, as the awareness of climate change improves, realizing a low－carbon way of living, also known as reducing your carbon footprint, is a growing trend among young people. a recent survey shows an average 78 percent of all 17 thousand people questioned资源难易程度:★★★★★★★★★★★★★★★
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