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.
班上的每一个同学都进一步认真观察校园,可以观察校园的建筑布局、可以观察校园的某一处景物——选择您认为最有介绍价值的。观察的时候,可要注意抓住特点。——选择出校园中给你留下印象最深的景物,认真、仔细地观察清楚景物的座落、外观,了解、回忆学校师生或其他人与这处景物或建筑之间发生的事情,认真想一想:为什么会给你留下这样深的印象。
© 2022 xuexicn.net,All Rights Reserved.