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信息发布者：
a smile
Look into the sky
Close your eyes
bring a different feeling
Take a seat
No. Because air travel uses a lot of energy./Because it's not an environment-friendly way.
To protect the natural environment and keep wild plants safe.
Reuse our towels instead of what the hotel provides./Always carry an eco-friendly bag 
while shopping./Save electricity and water in every possible situation.(答案不唯一)
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