假设你是星光中学的李华，将参加主题为“Let’s Ride Bicycles”的英语演讲比赛。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堵塞等问题。
2.骑自行车的益处（如能环保、有利健康等）。
3.政府启动“公共自行车系统”，人们有条件很方便地使用自行车。
参考词汇：
公共自行车系统 （Public Bicycle Service System）
低碳生活（low-carbon life）节能(energy saving)
注意：1.词数：100词左右；
2.演讲稿开头和结尾已给出，请将其抄写在答题卡上且该部分不计入总词数。
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 all, cars have become a popular means of transport, which bring great convenience to our life. However, they also caused some problems such as air pollution and traffic jams.
How can we solve these problems ? As far as I’m concerned, riding bicycles is a good way. For one thing, bicycles don’ t need any petrol and they are energy-saving. For another, bicycles are environmentally friendly because that they won’t give off waste gas. What’s more, riding bicycles is beneficial to our health.
Our government has started “Pubic Bicycle Service System”, through which people can have easy access to a large number of “public bicycles”. Therefore, let’s take the responsibility to build up a low-carbon city by riding bicycles. Come on and join us!
Thank you for listening!
【解析】
试题分析：这是一篇给材料作文。本文所给材料比较简略，故动笔前要认真阅读材料，组织写作内容，不可遗漏要点，并适当发挥。写作中注意从两方面进行叙述，首先介绍当今的交通堵塞问题，然后分三点介绍骑行车的好处。根据材料内容可知本文主要是一般现在时态，注意时态语时间状语的搭配及主谓一致问题。写作中适当使用连词，注意上下文联系紧密，符合逻辑关系。该题型主要考查学生的语言表达能力，在写作中根据所给提示和语言信息，不遗漏要点，可以适当发挥。做到表达清楚，语法正确，上下文连贯。
亮点说明：范文使用了一些重要的语法知识：非限制性定语从句cars have become a popular means of transport, which bring great convenience to our life.以及s started “Pubic Bicycle Service System”, through which people can…；动名词作主语riding bicycles is beneficial to our health等，语法知识使用得当，叙事清晰；
范文注意使用了现在完成时、一般现在时等不同的时态来叙述不同的事情，对时态有较好的把握；
范文使用了很多固定短语：such as例如；environmentally friendly有利于环境保护的；give off放出；build up逐步建立等，使作文内容更加充实；
范文注意使用As is known to all，However，As far as I’m concerned，For one thing…for another…，What’s more等来衔接句子和段落，表示事情发生的时间顺序，使作文更有条理，做到了行文连贯；
范文注意使用副词however,therefore等来表示强调，使表达更加生动。
考点：材料类作文
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