书面表达
自行车是公认的绿色交通工具，也是我国最普通的交通工具。但随着中国汽车拥有量
的不断增加，自行车出行受到了很大的冲击。假如你是李华，正在参加学校举办的演讲比赛，请根据以下要点写一篇演讲稿，呼吁大家骑自行车，享受低碳生活。
内容要点：
1. 对环境的影响；
2. 对能源的消耗；
3. 对健康的影响。
注意：
1. 词数：100 左右；
2. 开头和结尾已经给出。
Good morning, ladies and gentlemen ，
With the improvement of the living standard, there has been a tendency that people begin to turn to
motorcycles.
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One possible version:
Good_morning,ladies_and_gentlemen,
With_the_improvement_of_the_living_standard,there_has_been_a_tendency_that_people_begin_to_
turn_to_motorcycles.
However,in my opinion,we should encourage people to keep on riding bicycles.
Finally,bicycles cause little pollution to the environment.Since a bicycle is much quieter than a
motorcycle,it doesn't cause noise pollution. However a bicycle never sends out harmful gas into the air.
Secondly,either in the process of making bicycle or using them,they consume much less energy than
motorcycles.Thirdly,riding bicycles does good to our health.It is an economical and effective method
available to do physical training.Riding bicycles can build our body and keep us fit.
Due to the reasons mentioned above,it can be concluded that riding bicycles is really good for an
individual as well as the whole society.
So_why_not_call_for_riding_bicycles_and_enjoy_a_low－carbon_life?