问题详情：
假定你是星光中学的李华，将参加主题为“Let’s Ride Bicycles”的演讲比赛。请撰写一份演讲稿，主要内容包括：
1. 目前汽车带来的空气污染和交通阻塞等问题；
2. 骑自行车的益处，如节能环保、有利健康等。
参考词汇：低碳生活(low-carbon life)；节能(energy-saving)
注意：1. 词数100左右；
2.可适当增加细节，以使行文连贯
【回答】
Good morning, everyone,
I am Li Hua from Xingguang Middle School. The topic of my speech is "Let's Ride Bicycles". As is known to us, air pollution and heavy urban traffic are becoming increasingly severe mainly due to the overuse of cars. Therefore, it’s high time we chose another better means of transport that is, cycling.
There are many good reasons to ride bicycles. First of all, compared to cars, bicycles are much cheaper to buy and maintain, and you don't have all the added costs of fuel, and parking. What's more, bicycles are more environmentally friendly than cars, because they hardly make noises and exhaust. Cycling has become a new trend around the world, a good way of energy saving and low-carbon life. Last but not least, cycling is an excellent way to keep fit and live longer. By riding bicycles, you can cut down your risk of heart attacks, high blood pressure and other illnesses. So I think, riding bicycles actually has great effects on us. Let's ride bicycles from today on! Thank you!
知识点：提纲作文
题型：书面表达
