I am Li Hua from Xingguang Middle School.The topic of my speech is “Let's Ride Bicycles”．

　　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. 第21讲

　　│ 美文欣赏 How can we solve the problems then？As far as I'm concerned，riding bicycles is a good solution.For one thing，bicycles don't need any petrol and they are energy­saving.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 low­carbon city by riding bicycles.Come on and join us! Thank you！ 第21讲

　　│ 美文欣赏 【全品点睛】

　　①行文逻辑：自我介绍→汽车带来的问题→骑自行车的益处→发出倡议。较好地使用了连接和过渡成分，如连接词汇：however, as far as I'm concerned，what's more等以及过渡句：How can we solve the problems then.

　　②词汇短语：运用了较高难度的词汇。如：a popular means of，such as，for one thing…for another，give off, beneficial，take the responsibility，build up等。 第21讲

　　│ 美文欣赏 ③句式句法：运用了多样化的句式和句法结构。如：非限制性定语从句：As is known to all；现在分词短语作伴随状语： …bringing

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