进入2l世纪，环保是引起世界各国重视的大问题。请你根据以下要点写一篇100~120字的短文，谈谈你对环境污染的看法。
1．污染现已成为全球问题。空气、河流、海洋、土壤的污染对人类和动物十分有害。
2．列举2~3种产生污染的原辆以及由此造成的严重后果。
3．希望人们都能采取有效办法，控制污染，净化环境，保护生态平衡。
注意重点词语的表达：
①危害do sth. / sb. harm或do harm to sb. 或harm can be done to sb.／sth.
②采取措施take measares或we must do something to stop pollution或something must be done to stop pollution
③保持生态平衡keep the balance of nature或keep ecological balance
参考范文
In the world today, pollution has become a serious problem facing man and his plan-et. The air, seas, rivers and soil have been seriously polluted by all kinds of waste and poisonous matter. It does great harm not only to human beings but also to aninmls and plants. We can’t have fresh air. Fish died front polluted water. It is reported that strange diseases havc appeared in many places because of pollution. I hope that all the people in the world will take necessary steps and effective measures to solve this serious problem.
We arc looking forward to the coming of the day when we see pollution effectively con-trolled and air cleaned. It is indeed our urgent task to do everything possible to protect our ecological environment and to keep nature in good balance.