假设你是星光中学的李华，将参加主题为“Let’sridebicycles”的英语演讲比赛活动。请撰写一份演讲稿，主要内容：1、目前汽车带来的空气污染和交通堵塞问题 2、骑自行车的益处，如节能环保，有利健康等 3、参考词汇 low-carbon life energy saving

　　范文：

　　Good morning ， everyone ，

　　I’m Li Hua from Xing Guang Middle school 。 The topic of my speech is "Let’s ride bicycle” 。

　　As is known to all， with the improvement of people’s living standards ， cars have become a popular means of transport ，bringing great convenience to our life 。However ， they have also caused some problems such as air pollution and traffic jams 。

　　How can we solve the problems then ? As far as I am concerned ， riding bicycles is a good solution 。For one thing， bicycles don’t need any petrol and they are energy –saving 。 For another ， bicycles are environmentally friendly because they won’t give off waste gas 。What’s more ， riding bicycles is a good way for us to exercise and it is beneficial to our health 。

　　Therefore， let’s take the responsibility to build up a low-carbon city by riding bicycles 。 Come on and join us !

　　Thank you!