| chapter 1 unit 1 a brief introduction of confucius 孔子简介 unit 2 stories about presidents 总统趣闻 unit 3 travel dos and don，ts 旅行禁忌 unit 4 sharing losses through insurance 通过保险分担损失 unit 5 environmental protection in china 中国的环保问题 chapter 2 unit 6 energy crisis 能源危机 unit 7 showing concern for food safety |
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