It is safe for people to ride it when they go to work, and the price is not very high. What’s more, they are friendly to the environment as they save energy and make low noise.
Also , there are manyproblems with them. For example, the batteries must be replacedafter having been used for 300 to 400 times. If they are not changed in time, they would cause pollution again.
深圳是我最喜欢的城市。她年轻富有活力。我在这里居住了10年。我爱这座城市的海鲜和美丽的风景。夏天来的时候,我可以去海边看日出,或者去享受冰爽的海水。在周末的时候,去公园散散步。深圳是我的家。等我长大了,我要为这所城市作出贡献,让她变得更好。
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