中学生英语演讲稿保护大自然2篇 作文怎么写(20篇)

In the last several decades, our earth has been extremely polluted, such as air pollution, water pollution, noise pollution and so on. In recent years, the extreme weather becomes more and more frequent. Winter gets colder and summer becomes hotter and it rains more frequently. All of these warn us that protecting the environment is a serious and emergent event. As our general people, we should build proper lifestyle. We should pay attention to water and light saving. When we go out, we should firstly choose the public transportation. The most important is that we must realize that we can do a lot of things to protect our environment. Its our duty to make our home better. Let’s change from ourselves.

Taking care of our school and

Taking care of our school and protecting our school environment! A clean and pleasant environment is very important, because it can make us healthy and happy.

It’s our duty to protect our school environment. We should clean the school every day. And we shouldn’t drop trash here and there. We should pick it up when we see trash on the ground.

We shouldn’t draw on the wall. If we all like our school the same as we like our homes, our school will be more beautiful. We will enjoy our study better. Let’s protect our school environment from now on, shall we?

Marine biological environment is a complex system including sea water, sea water, soluble matter and suspended matter, seabed sediments and marine organisms. The rich biological resources, mineral resources, chemical resources and power resources in the sea are indispensable human resources treasure houses, which are closely related to the survival and development of mankind.

At present, the main objective of marine conservation is to protect marine biological resources so that they can not be exhausted for sustainable use by mankind. In particular, priority should be given to the conservation of marine animals that are valuable and endangered. According to the UN investigation, due to overfishing, mangrove accidental killing of non target to allow the killing of marine organisms, the coastal engineering construction, deforestation, pollution of the marine environment in general, at least 25 of the worlds most valuable fisheries resources consumed, whales, sea turtles, manatees and many other marine animal faces the danger of extinction. It is expected that with the expansion of marine development, it is possible to cause more damage to marine biological resources.

Marine protection task should first stop on the marine biological resources excessive use, secondly to protect the marine biological habitat or habitat, especially their migration, spawning, feeding, avoid Huahai coastline, beaches, estuaries, coral reefs, to prevent heavy metals, pesticides, oil, organic produce and eutrophication. Nutrients such as marine pollution. Maintain the ability of regeneration of marine biological resources and the natural purification ability of the sea water, maintain the marine ecological balance, and ensure the sustainable development and utilization of the marine.

It seems we are living in the conflict between modern and traditional cultures every day. Hearing the blaring of horns the moment you step out of your house, seeing the so called "pop" the moment you open your eyes, you cant help thinking, "Will the traditional culture be gradually lost?"

Many people believe so. They may put right in front of you all the evidences they can dig out. They may argue that people are rushing to restaurants instead of cooking at home, listening to pop music but not traditional, wearing in a way people couldnt imagine ten years ago. Modern people like the air of freedom, not to be restrained by traditions. They offer this long list, only trying to confirm that this world is full of fashion,competition and temptation and the traditional culture is fading

and will be lost at last.

Though we are now living in a world in which undeclared aggression, war, hypocrisy, chicanery, anarchy are part of our daily life. Though this is a skeptical age, and our faith has weakened, our confidence in some aspects of the traditional culture should and would never be lost.

Wouldnt you agree that our traditional culture is always credited with modesty, politeness and respectfulness, which have always been treasured for more than five thousand years?Even in this modern world, people still admire those with good manners, those who are polite to others or respectful to old people.

Wouldnt you agree that our Chinese traditional music is beautiful and artistic and our Chinese tea culture is always an appealing treasure to people around the world?

So there may just be some changes in our lifestyle or our attitudes towards life, but little change occurs to some fundamental aspects of our traditional culture that people still treasure in heart.

Elephants are the biggest animals on the land.They are big and srong.They have big ears and trunks.They can walk quietly and help people move heavy things. They are very friendly,kind and always live together.But the number of elephants reduces.People kill elephants for their ivories.We must take action to protect them or else they will extinct from the world.

Stepping into the new century, environment pollution has become more serious than ever since. There are different kinds of pollution. Such as, water pollution, air pollution and noise pollution and so on. It seems that we live on a planet which is full of pollution. Where all these pollution comes from? To a large extend, the environmental destruction is the heavy price that we pay for the rapid development of economy and the growing population. In order to have more fuel, people cut down trees and dig more corals. But the growing needs for energy are hardly to meet. Countless private cars on the street, the gas stations are short of gasoline, even the government has raise the price so many times in order to control the needs of gasoline, but it’s still not working. Overusing the natural resources has already affected the ecological balance. However, the factories still release the toxic air into the sky and the polluted water into the rivers. People still lack of the conscious of protecting the environment. I think it’s time for all of us to do something.

The government should put forward some more strict laws to prevent the environment from being further polluted. And they should let people know more about the importance of environment protection. And we should find the balance between the economic growth and environmental protection. Plant more trees in the deserts and stop cutting down the forest. Forbid the factories to pour the waste water into the rivers directly. Encourage people to use public transportations to work. Both government and ordinary people should join hands together to make our home clean and fresh again. Only in this way, our earth could be a better place to live in.

进入新世界以来，环境污染比任何时候都要严峻。有各式各样的污染：水污染，空气污染，噪音污染等等。看起来我们活着一个四周都是污染源的星球。那么，这些污染是从何而来的呢?在很大程度上，环境被破坏就是我们为快速的经济增长和人口增加所付出的惨烈代价。为了得到更多的能源，人们砍伐树木，挖更多的煤矿，但是还是难以维持日益增长的需求。不计其数的私家车充斥着公路，加油站的汽油严重短缺，政府多次上调油价也未能阻止私家车对汽油的需求。自然资源的过度利用已经影响到了生态平衡。然而，工厂依旧向外排放有毒气体，把工业废水倒入河里。人们依旧缺乏保护环境的意识。我认为人们应该做些事情了。

政府应该施行一些更为严格的法律来防止环境被进一步的破坏掉。他们应该让人们了解到保护环境的重要性。我们要在保持经济发展和环境保护中找到平衡点。在沙漠中植树造林，停止砍伐森林。禁止工厂往河流里直接排放废水。鼓励人们用交通工具上班。政府和普通民众都应该携手保护环境，让我们的家园变得干净整洁。只有这样，我们的地球才能更适合人类居住。

[英语保护环境作文3篇

The earth is our common homeland, we will not be able to live without the earth, so we should protect our home, cant let those greedy people destroy the earth.

Due to the deforestation of people, from underground oil, coal, discharge of sewage, chemical plant, built the earth has been scarred, because the tree is his bones and muscles, underground oil is his blood, the coal is his insides, the earth must be very painful, very hate him sons and daughters, should treat him so, but people did a show of indifference, said: "the earth is not to provide us with resources, hearing this, I am very sympathetic to the earth, feel sad for the earth."

And better homes in my heart is like this: people living in wooden houses, the home use is very of environmental protection, the source of all is depend on the sun can, as long as the sun will have electricity, car is the solar energy, environmentally friendly, green city, the birds come here to live and work in peace and contentment, singing a happy song, people no longer deforestation, wont hurt the earth, all living a happy good life, also wont kill some innocent little animals, the earth saw it all, happy smile, his scar is finally good, again is a fresh world.

While people used to hurt the earth, but now most people realize his mistake, and the country will also from time to time to do a publicity, to remind people to protect the environment, to become a good citizen, if people correct mistakes, I think my homeland in my heart, can come true soon.

地球是我们共同的家园，没有了地球我们将无法生存，所以我们要保护我们的家园，不能让那些贪心的人破坏地球。

由于人们的乱砍乱伐、从地下抽油、挖煤、排放污水、建化工厂，地球已经伤痕累累，因为树木就是他的筋骨，地下油是他的血液，那煤就是他的五脏六腑呀，地球一定很痛，很恨他的儿女们，竟然这样对待他，可人们却一副无所谓的样子，说：“地球不就是给我们提供资源的吗，听了这话，我非常同情地球，为地球感到悲伤。”

而在我心中的美好家园是这样的：人们都住着木头房子，家里用的东西都是很环保的，一切都是靠太阳的源能，只要有太阳就会有电，车都是太阳能的，很环保，城市里绿树成荫，鸟儿们都来这安居乐业，唱着愉快的歌声，人们不再乱砍乱伐，不会再伤害地球，都过着幸福美好的生活，也不会再杀害一些无辜的小动物，当地球看到了这一切，高兴的笑了，他的伤痕终于好了，又是一个精神焕发的地球了。

虽然人们以前伤害了地球，但现在大部分人都认识到自己的错误了，而且全国也会时不时的做一做宣传，时刻提醒人们要保护环境，做一个好公民，如果人们都改正错误的话，我想我心中的美好家园，不久就能成真的了。

保护动物

It was a fine day today and the sun was bright。 I visited Beijing Zoo with my classmate， He Song。 The animals were so interesting that all the people loved them。 When a bear asked for some food by waving its ann， a visitor threw something to it。 At once I went up to him and said without thinking，Dont do that。 Its bad for it。 If you really love them， take good care of them。 His face turned red and answered he wouldnt do that again。

这天是个风和日丽的好天，我和同学贺松去了北京动物园。动物们是那么可爱，大家都十分喜欢它们。一只熊挥动着胳膊向人们要吃的，一个游客就投进去了什么东西。我想都没想就走过去说：“不要那样做。你的做法对它们没好处。如果真的喜欢它们，就就应爱护它们。”他的脸红了，并且回答说他不会再那么做了。

Many animals are in danger of dying out。 As is shown in the chart， we can see the number of animal species decreases faster and faster and this trend will continue。 From 1980 to 2010， at least 1 million animal species have disappeared。 Worse still， more and more wild animals are in great danger。 It is not a piece of sensational news; it is a fact， a harsh reality。 Unfortunately， we may not see these animals in the near future。

From the second picture， we can find some reasons。 Why is the number of animal species declining year by year？ Apparently animals have become victims of fashion industry。 Animal skin has been used to make fashionable clothes and these clothes sell at a high price。 So some greedy people begin to kill animals in a large quantity。 This irresponsible behavior not only breaks the balance of nature but also endangers the living environment of human beings。

As far as I am concerned， something must be done to stop this illegal action。 We believe "no buying， no killing"。 First， we must make concerning laws to protect these animals in danger。 Second， we must take some measures to protect animals effectively。 Animals are our friends and part of our environment。 Third， we should raise peoples awareness to protect animals and our environment。 In this way， we can build a harmonious society and ensure a sustainable development。

As we all know, the environment around us is getting worse and worse more and more seriously today. Water is polluted, we have no clean water to drink. Many trees are cutting down, some animals are getting less and less. Some factories are pouring dirty air into the sky. The population is increasing faster and faster, resources are getting less and less…etc. Not only does it affect our lives and health, it also has a great affection in the future. People’s health has been greatly affected by air, noise and water pollution. Many people died of diseases. In order to live a better life, something must be done to stop the pollution. It’s our duty to protect our environment. We shouldn’t throw away rubbish everywhere. Trees are very helpful and important for us. We should plant more and more trees in order to live better and more healthy in the future.

If everyone makes contribution to protecting the environment, the world will become much more beautiful. In a word, if everyone pays more attention to our environment, there will be less pollution and our life will be better. “There is only one earth”, I hope everyone will protect our environment well.

大自然是我们人类共同的家园，它给我们提供了赖以生存的丰富资源。正是如此，我们应该珍爱自然，保护自然。

自然是一个大家庭，它里面包含着各种各样的物质，如树木资源、山川、河流都是它的子孙，可是我们人类竟践踏土地，蹧踏资源。

春天，正是那大自然重现生机的时候，小草儿抽出了嫩芽，探出脑袋吮吸着阳光、雨露同，树木也都发了同了芽儿，看！大自然妈妈笑了，原来远处的山坡上有人在种树呢！一颗颗小树在他人的培育下慢慢长大了，就像一个个孩子在成长着。

夏天，树木葱笼，百草丰茂，可是美中不足的是人类，开始砍伐树木了。他们野心勃勃的砍了一棵又一棵，大自然妈妈哭了，他仿佛在呼唤着：“我的孩子，我的孩子，这就是人类一个错误——乱伐树木。凶狠地践害着大自然妈妈的子孙。

秋天，树上仿佛叶子全掉了，只剩下几片枯叶随风飘荡，人类现在仍没停止破坏自然，他们砍完树后，做出了一件更荒唐的事，他们想靠挖资源来过日子。首先是一个人，接着便越来越多了，虽然他们没有挖到，但是他们仍坚持着，我真想大声的呼唤人们：“人们啊，你们这样做是没有用的，我们不能乱开采，它们是有限的，一旦开采完，我们将走向死亡。

冬天，雪花飘荡，世界变成了银白色，一切都穿上了银白色的素装，人们应该说不破坏自然了，可并不是，他们又开始实行下一计划——破坏小河。他们由于懒惰，家里的东西生活垃圾全倒进了小河里，小河被垃圾淹得透不过气来，只是拼命的哭着、喊着直叫救命，救命，可是懒惰的人们哪能听得见呢！他们只知道图方便轻松，便不顾一切的往小河里倒垃圾，自然妈妈就这样被人类破坏得不成模样，又臭又脏。

自然啊，美丽的自然，你是人类的家园，我们人类破坏你，我代为人类向你表示深深的歉意，希望你能够原谅我们——人类。

同时人类啊，也请珍惜地球吧！

从2008年6月1日起，国家将禁止商家免费提供塑料袋，掀起全国“拒塑”的环保运动。假如你是李华，准备以“What Can We Do for the Environment” 为题，写一篇保护环境的英语演讲稿。

内容包含：(1).在购物时用布袋子替代塑料袋; (2).尽可能地再利用使用过的课本;(3).离开教室应关灯;(4).最好走路或骑自行车上学; (5).简述理由：保护环境，减少污染，节约能源等. 参考词汇：布袋子cloth bag塑料袋plastic bag保护protect能源energy污染pollution课本textbook

What Can We Do for the Environment our environment is becoming worse and worse, what can we do for the environment? I think each of us can do a little bit to help with this problem. The first thing we can do is to use cloth bags instead of plastic bags when we go shopping. It helps to protect the environment. The second thing we can do is to reuse the old textbooks as possible as we can. We should also never forget to turn off the lights when we leave the classrooms in order to save energy. What’s more, it would be better if we walk or ride a bike to school. We should try our best to reduce pollution and waste. In fact, even the simplest everyday activities can make a real difference to the environment. I believe we can make the world a better place to live in.

3.为了保护地球有限的资源，我们应该采取什么措施呢?请根据下面的提示写一篇约80词的短文，短文开头已经给出。提示词; 1.save water, the source of life, protect drinking water, stop polluting, make full use of it; 2.save electricity, crucial, turn off, other electric machines; 3. save forests, useful ,stop cutting down; 4.recycle useful rubbish, save resources

参考作文：

Although the world develops much faster and better, the resources on the earth get fewer and fewer. In order to protect them ,something must be done. Save water. Water is the source of life. No water, no life. So it’s very important for us to do so .Not only should we protect drinking water and stop polluting it, but also make full use of it. Save electricity. It is crucial. We can’t imagine what the life will be like without it. Everyone should do his best to save electricity. Don’t forget to turn off lights or other electric machines when we finish working. Save forests. They are useful .Please stop cutting them down and use recycled paper instead. Make our world a green one to live in. Recycle useful rubbish. Plenty of rubbish can be recycled like cans , paper, bottles, and so on. We can save resources in this way. I believe we can make the world a better place to live in.

参考译文：

尽管世界发展更快、更好,地球上的资源得到越来越少。为了保护他们,必须得做点什么。要节约用水,水是生命之源。没有水,就没有生命。所以这对我们来说是非常重要的。我们不仅应该保护饮用水和停止污染,但也充分利用它。节约用电。它是至关重要的。我们无法想象没有它的生活将是什么样子。每个人都应该尽力节约用电。别忘了关掉灯或其他电动机器当我们完成工作。拯救森林。他们是有用的。请停止切割下来,转而使用再生纸。让我们的世界一个住在绿色。回收有用的垃圾。大量的垃圾可以回收罐、纸、瓶子、等等。以这种方式我们可以节省资源。我相信我们可以让世界变得更美好。

In particular, is the giant whale mass stranding of whales is not uncommon, even in the same group of whales stranded in a few days in a row, but because it has always been hard to understand. According to the scientists speculate, as the whale to have a strong group of marine animals, and the scope of activities near the coast, so there are two possibilities: First, the leading whale sick, toward the beach, the other whales also customary to follow the whale to the Forward setting; Second, the whales chasing prey into the bank. When one or a few stranded whales, other whales will follow suit or to try to rescue, resulting in a large number of whales stranded at the same time on the same piece of the beach.

In my mind，nothing can delight me so much as caring for animals.

Wherever I go and whatever I do, I usually keep in mind that animals are angelsfrom the heaven, which bring us endless comfort and pleasure.

I have been apanda lover since my childhood.

Panda is so lovely that brings fun to peopleand they are regarded as the treasure of our country.

Unfortunately，such a rare species is now faced with the danger ofbeing extinct。What I am eager to do is to raise people’sawareness of animal protection and appeal to more people to care for our earthcompanies.

翻译：

我认为，没有什么能够像关心动物一样让我快乐。不管我去到哪里，在做些什么，我会时刻牢记动物是来自天堂的天使，带给我们无尽的舒适和快乐。

我从小开始就是一名熊猫爱好者。熊猫是如此可爱，给人们带来乐趣，而且它们是我国的国宝。不幸的是，这种稀有物种现在正频临灭绝的危险。 我想要做的是提高人们保护环境的意识，呼吁更多的人关心我们地球的伴侣。

[保护熊猫的英语作文4篇

There are still many problems of environmental protection in recent years。

One of the most serious problems is the serious pollution of air， water and soil。

the polluted air does great harm to people’s health。

The polluted water causes diseases and death。

What is more， vegetation had been greatly reduced with the rapid growth of modern cities。

To protect the environment， governments of many countries have done a lot。

Legislative steps have been introduced to control air pollution， to protect the forest and sea resources and to stop any environmental pollution。

Therefore， governments are playing the most important role in the environmental protection today。

In my opinion， to protect environment， the government must take even more concrete measures。

First， it should let people fully realize the importance of environmental protection through education。

Second， much more efforts should be made to put the population planning policy into practice， because more people means more people means more pollution。

Finally， those who destroy the environment intentionally should be severely punished。

We should let them know that destroying environment means destroying mankind themselves。

保护环境

目前环保还存在着许多问题。

最严重的问题就是空气、水和土壤的严重污染。

污染的空气对人类的健康十分有害。

污染的水引起疼病，造成死亡。

更有甚者，随着现代社会的迅速扩建，植被大大的减少。

为了保护环境，各国政府做了超多的工作。

采用了立法措施控制大气污染，保护森林资源和海洋资源，制止任何环境污染。

因此，在当今的环保中政府起着最重要的作用。

我的看法是，为了保护环境，政府应当采取更具体的措施。

首先，应当透过教育的方法使人们充分謒到环境保护的重要性。

第二，应更加努力把计划生育政策付诸实施，因为人口多就意味着污染严重。

最后，要严惩那些故意破坏环境者。

使他们破坏环境就是毁灭人类自我。

I am a student from Xinhua High School in Chongqing，China。 Informed that you have a vacancy for a student to serve as the spokesman for animals， I cannot resist my inner excitement，hoping to seize the opportunity to do something for animals 。

In my mind，nothing can delight me so much as caring for animals。 Wherever I go and whatever I do， I usually keep in mind that animals are angels from the heaven， which bring us endless comfort and pleasure。 I have been a panda lover since my childhood。 Panda is so lovely that brings fun to people and they are regarded as the treasure of our country。 Unfortunately，such a rare species is now faced with the danger of being extinct。What I am eager to do is to raise people’s awareness of animal protection and appeal to more people to care for our earth companies。

一、Save the earth

How to protect theenvironment has become one of the biggest problems in the world .

It’s our duty toprotect our environment .No matter where we live ,we should do something tokeep our neighborhood clean and tidy .We can collect waste paper or otherwaste things for recycling.We should plant more trees and we should preventthose factories from pouring waste water into rivers,lakes and fields.We shouldn’t leave rubbish everywhere andspit in public places .We mustn’t pick the flowers or step on the grass inpublic.If everyone tries his best to protect the environment ,the world willbecome much more beautiful and our life will be better and better .

二、Improve our environment

Good environment canmake people feel happy.To improve the environment means to qualify our life .What should we do to improve our environment

We should plant moretrees .And we should prevent those factories from pouring waste water intorivers ,lakes and fields .Whenever we see litter on the ground ,we shouldpick it up and throw it into a dustbin .Don’t spit in public places .Don’tdraw on public walls .It’s our duty to keep our earth clean and tidy .

三、Pollutionaround us

Inrecent years our life is becoming better and better.But our environment isbecoming worse and worse.It’s very bad for our life.Now many people haveair-conditioners and cars,they produce (give off ) waste gas.More and moretrees are being cut down.There are so much sand on the earth (leaving onlysand ) .We often see factories pour waste into rivers or lakes.Water in theriver is quite dirty.We haven’t enough clean water to drink in cities.Now weare in danger.It’s very necessary and important to protect the environmentwell.I think if everyone tries his best to protect the environment,the worldwill become much more beautiful ,and our life will be better and better .

四、My country life

I like to live in the countryside.I live in a small village.There is a river near it.Lots of trees are around my house.I can see a lot of farms and birds.There is less noise.The air here is cleaner and fresher.There are fewer cars.I read aloud early in the morning.When it is getting dark,the moon is brightin the sky.It’s very quiet .What a nice place I live in !

[英语作文保护环境120词

, hello! I am an alien from mercury. This time, I wrote to you for the environment on earth.

Ago, I went to visit the earth, the earths beautiful scenery let me fascinated. The river clear visible bottom, can see the fish swimming around, can see the bottom of the river green brown stone. A stream of bright blue, let me deeply respected. Come to the garden, and flowers there. Came to the forest, where birds, the animals free life. Lush trees... Returning to mercury, I told my friends everything I saw on earth, ready to go to earth for a few years with my friends.

A few years later, I came to earth with the guys. At this time, we cant believe the scene appeared in front of us: once lush trees has been changed to dongdong tall buildings. The previous clear visible bottom stream and stream of bright blue, has disappeared, has become a stinking creek, before swimming fish have been stinks, have a lot of rubbish in the river. Looked up and saw the sky is gray, it is already lost before the beautiful beautiful blue skirt. Road piled up a lot of rubbish, everyone passing by, and no one to clean up the trash.

I want you to take care of the environment and protect the environment.

At that time, I was in first grade, also do not understand love small animals.

That day, my mother bought me two little ducks. I am very happy, put the two little ducks in the box, hearing the cry of them, my mood is very good.

The next day, I want to let my classmates to my house to see my duck, I call the classmate, let him come. He looked at the duck, also feel very funny. We put a small duck on the ground, it took a few steps forward and then fell down, it caught up, and fell down, and we laughed. We play enough, threw the little duck into the box, to play with toys.

In the afternoon, my father and I went to see the little duck, saw a duck belly up, wings and feet in the shaking, its called the voice is very big, like crying. Dad hand a little duck, duck down again. I suddenly remembered I throw little duck into the box, ah! I am a murderer! I cried. Little duck finally died, I was sad.

From then on, I began to take care of small animals.

那时，我才上一年级，还不懂爱护小动物。

那天，我妈妈给我买了两只小鸭子。我很高兴，把两只小鸭子放在箱子里，听着它们的叫声，我的心情非常的好。

第二天，我想让同学到我家看看我的鸭子，我给同学打电话，让他来。他看了鸭子，也觉得很好玩。我们把一只小鸭子放在地上，它向前走了几步就摔倒了，它抓了起来，又摔倒了，我们哈哈大笑。我们玩够了，就把小鸭子扔进了箱子里，去玩玩具了。

下午，我和爸爸去看小鸭子，看见一只鸭子肚子朝上，翅膀和脚在抖动，它叫的声音很大，好像在哭一样。爸爸把小鸭子扶起来，小鸭子又倒了。我突然想起来我把小鸭子扔进箱子里的事，呀!我是杀人凶手呀!我哭了。小鸭子最后死了，我很伤心。

从那时起，我就开始爱护小动物了。

尊敬的老师、同学们：

大家好，我是苏博韬，今天我给大家演讲的题目是《人间“海市”》，这个“海市”不是指沙漠中阳光折射的幻象，而是指美丽的城市，人间“海市”就是在地球建造美丽的城市。

当人们乘着宇宙飞船，来到宇宙遥望自己的家乡———地球，是那样的晶莹透亮、美丽壮观，而又是一个脆弱的生命太需要人类的保护和珍惜，珍惜地球的自然资源，如果大家继续无节制地去开采地球的自然资源，那么地球难逃毁灭的命运。还有的人贪婪地说：“等地球的资源开采完了，不能搬到其他星球上去居住吗？”现在科学家已经证明了在地球为中心的40万亿千米的范围内，没有适合人类居住的第二个星球，所以这个科学成果打败了人类贪婪的心理。

现在人们到处在破坏地球，砍伐森林，造成水土流失，洪水泛滥，冲垮堤岸淹没了村庄，这是江水、河流、小溪的报应。还有的人们住在河水的上游把垃圾和化学物品倒入水中，让下游的人们饮用后，产生了水俣病，这种病非常厉害。比如说在日本九州熊本县水俣镇就发生过。1950年水俣湾附近的于村中发现一些猫步态不稳，抽筋麻痹，最后跳入水中溺水死亡，当地人谓之“自杀猫”。就连人类也受到了水俣病军团的威胁。继水俣镇1963年，日本新泻市又有大批自杀猫、自杀狗出现。1973年在有明海南部沿岸的有明町等地有发生了水俣病。据报道这三次发病人数共计900人，实际上在日本受害者人数远远地超过了这个数字，仅水俣镇受害居民有1万人左右。同学们难道你们还不知道污染水资源是那么的可怕啊！

不说日本，就说我老家门前有一座桥，桥下有很大的一条河流，以前河水散发着大自然的气息，清澈见底，总能听见洗衣人那美妙的歌声。而现在从那走过时，人们不由自主地捂住鼻子，如果不捂住鼻子，那刺鼻的气味就像“强盗”一样闯进你的鼻子。垃圾多得意地把整条大河堵塞住，大河却变成了慢慢流淌的小溪，有时候小溪也会断流，农民伯伯也没有水浇地，而所有的蔬菜麦田已经干枯而死。我们多么怀念那美丽的绿色，怀念那美妙的歌声，而这又是谁造成的呢？——除了人类还能有谁！难道你们能坐视不管吗？不行，我已经愤怒了。

我呼吁：人类要保护地球！

1、不能倒垃圾：

2、不乱建工厂；

3、不堵塞河道；

4、不乱排污水、化学物品；

5、垃圾应送到垃圾处理站进行分类处理；

6、应给排水口装上过滤器。

我只想告诉人类一句话：“尊重地球就是尊重生命，拯救地球就是拯救未来，让我们携起手来共创人间“海市”！

我演讲完了，谢谢大家。

Mark suddenly had a bad bellyache before class began this morning. His classmates immediately sent him to the Peoples Hospital nearby. In the hospital, the doctor gave him a medical check-up. The result of the examination showed that he was suffering from acute appendicitis and he needed an operation right away.

The monitor of his class quickly called Marks father and asked him to come to the hospital at once. After a while,Marks father came and the operation began in no time. Several days later,Mark recovered.