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必修3《Lesson 1 On Your Bike》最新PPT课件优质课下载
China
Amsterdam
China
Amsterdam
China
Cars
problems
Amsterdam
bikes
benefits
air pollution
traffic jam
global warming
road accident
haze
How to solve these problems?
Cycling
What are the advantages of bicycles over cars?
Save energy
Less traffic
Environmentally-friendly
Reduce pollution
Society
Save money
Keep fit