We live in the world every day. We eat food, drink water, wear clothes, watch TV, use computers and so on. We are producing waste every moment.
Generally speaking, there are four sorts of waste. They are material waste, organic waste, inorganic waste and poisonous harmful waste. Now, we are going to talk about each sort of waste one by one.
Material waste: it means the waste of substance or things from which something else can be made. For example, people throw away the used metal products and buy a new one, so the old metal waste accumulates. At last, they become waste. For example, when people finish reading newspaper, the paper will become waste. When the glass is broken, it also becomes waste. Nobody wants to use a broken window or drink with a broken glass or wear a pair of broken glasses. Once it is broken, it becomes waste. The rate of using plastics is increasing day by day. People use plastic bags because they are convenient. When they get home, they throw the plastics way, paying no attention to the environment. The more convenience plastics brings to us, the more plastic waste is produced. This is called white pollution as most plastics are white. Some of our products we use every day are made of rubber, just like the tyres and the bottom part of our shoes. Its true that rubber plays an important role in our life. However, it also brings us some trouble when it has been used for a long time and becomes old. The old tyres become waste because it cant break down by nature. This is really a big problem.
Organic waste: it refers to waste from living things, including waste from animals, plants and people. Some parts of vegetables are thrown away as waste because they dont taste good. In the past, people cooked their food using burning coal, so there left the burned coal, which is useless, like the thrown vegetables. All this sorts of waste contain organism, so it is called organic waste.
Actually, we also have inorganic waste, the opposite to organic waste, including building waste, broken pottery and china, and cinder.
The last part is harmful and poisonous waste, such as used batteries, electrical apparatus and medical supplies. Computers and TV sets are one part of electrical apparatus. You see, the old electrical apparatus can set off some dangerous rays and make the soil harder, even damage the under ground water. Mobile phones are as dangerous as computers and TV sets. As we know, X-rays can be used to examine patients, but the X-rays machines are dangerous when they are thrown away without any treatment. They cant be used to treat the sick, but they still can give off rays. For the normal people, they can be dangerous. So, we must think about this problem.
As waste has four sorts, we can sort them into each sort that they belong to. Its convenient to treat them after they are sorted. Then we can deal with them sort by sort. We have thought out some methods like storing them in order to change them into plant food, or burning them in a huge stove and use the heat to make electricity. For the first way, the change rate is much too low and it may pollute the under ground water. For the second one, of course its wonderful if its easy to be tried out. But to build such a huge stove will cost too much. Not a good method. Now you see, treating waste is not an easy job.
From what has been discussed above, we can do something to our homethe earth. We should make full use of things. At the same time, wed better reduce its harmful effect as much as possible.
We can do from the basic of waste. Thats to say, we can reduce the production of waste, and reuse and recycle them as much as we can. Take material waste for example. Nearly all of them can be recycled and reused. And, we should call for using things made of paper instead of plastics so as to protect our environment.
Protecting the environment is not one persons duty; it depends on all of us. What can we do? Maybe a dozen..
In a word, use what can reuse as much as possible. Remember, environment protection is not ones duty!
雅思口语考官是如何决定分数的?
中国考生在雅思口语中常犯的错误
雅思口语考试一定要言之有物
雅思口语天天练:简短口头禅
雅思口语素材:名人名言-卡洛斯.埃卢
雅思口语Part 3的常见问题及解答技巧
雅思口语:一些“形”同“意”合的谚语翻译
雅思口语话题:艺术品
雅思口语素材:好句推荐-世界是书
揭秘雅思口语评分标准的潜规则
雅思口语高分表达:地点描述
从考官的反应看雅思口语得分
浅谈雅思口语考试评分的潜规则
雅思口语必备材料:Family
短期提高雅思口语分数的方法
雅思口语天天练:留学生活中的高频口语4
雅思口语话题:a piece of music
雅思口语素材:名人名言-Alan Kay
雅思口语素材:羊群效应
雅思口语话题资料:元宵节
基础薄弱如何突破雅思口语6分?
雅思口语素材:好句推荐-不再拖延
雅思口语范文:A useful equipment
雅思口语技巧:如何没话找话
雅思口语辅导:中国成语的英文说法
雅思口语分类词汇:事件-工作
雅思口语话题解析:法律
雅思口语必备材料:Relaxation
雅思口语Part1话题:Handwiring
雅思口语必备材料:City vs. Country
不限 |
英语教案 |
英语课件 |
英语试题 |
不限 |
不限 |
上册 |
下册 |
不限 |