The Week

Color code your trash

作者：21st

保护环境，从垃圾分类做起。

词数 270 建议阅读时间 6分钟

课件及教案见网站测试见7版

WHEN your pen is broken, you think that’s the end of its life. You throw it away. It then joins tons of other garbage that is becoming a big problem in cities.

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