说明文

What makes a good friend?什么才是好朋友？Why is it important to protect the environment?为什么保护环境很重要？Have you ever wondered how animals survive in the wild?你有没有想过动物是如何在野外生存的？

Advertisement is very common in our life. I have a preference for it. It is funny and helps us a lot. Every time when I open TV or go outside, I can see various advertisements.

Bus: This is the most common transporting means, because it's so cheap and efficient. You can go to other cities by bus, but it's very slow in rush hours.