假如你所居住的城市環境污染越來越嚴重，請根據提示寫一篇短文說明污染原因，并呼吁人們愛護環境，保護地球。
提示：
1. 污染原因：工廠燃燒東西制造能量；人們大量砍伐樹木；公路上汽車數量的增多，污染空氣；人們亂丟垃圾，污染土地；
2. 呼吁保護環境：
（1）. 多植樹，停止亂丟垃圾；
（2）. 自己補充一點保護環境的方法；
要求：
1. 內容要點齊全，可以適當發揮。
2. 正確運用人稱、時態、語法等。
3. 詞數要求：70個左右。
4. 短文的開頭已給出，不算入總詞數。
Protect the Earth
The environment in my city is becoming worse and worse.
                                                     .

【考點】環境保護．

【答案】Protect the EarthThe environment in my city is becoming worse and worse. Factories burn things to make energy. People cut down many trees. It is bad for the air ，too. There are many cars on the streets. It also pollutes the air. People throw away rubbish everywhere. This pollutes the land.
As far as we know， it is our common dream to build a green home.What can people in my city do to protect the environment ？ First， we  should plant trees to make the air clean. Second， we must stop throwing away so much rubbish. Last but not least，we should go to work by bus or by bike.All in all，we must try to protect our environment and make the world more beautiful.