人类人口问题的英语作文(汇编20篇)

中国的人口问题和环境问题几乎是同时被人们重视起来的。人们将中国人口数量过多作为环境恶化的根本原因，将人口与环境对立起来，使很多人认为，要想从根本上解决中国的环境问题，就应该努力地削减中国的人口。但是，我们可以举个简单的例子：中国的森林面积在逐年减少，沙漠面积在逐年扩大，空气和水体质量越来越差，如果我们单纯地与俄罗斯、加拿大、美国、澳大利亚等国家相比，是很容易得出“人口少则环境好”这样的结论的。然而如果我们与日本、新加坡这些国家相比，就只能承认我们在环保意识和环保工作方面的差距。所以，我们可以说人口数量不是根本问题!

要创造和谐的人口与环境，我认为提高人口素质是减缓环境恶化的关键。它一方面受遗传因素的影响。比如“母强儿壮”反映了先天因素对人口身体素质有重要影响。再如白化病等很多疾病都属于遗传病，两个携带致病基因的人结合很有可能给下一代造成不幸。所以社会提倡优生优育，禁止近亲结婚。另一方面受社会和自然因素的影响。比如我国封建社会妇女裹足对人身健康的摧残;古巴比伦王国由于社会伦理道德的败坏导致文明的衰落等等。人类社会发展到今天，人口身体素质的高低，越来越取决于社会环境因素。人们对身体素质的要求越来越高，到处可见人们晨练的身影，并且平时的问候语也经常听到：“身体好吗?”这样的话，人们不再追求吃饱，而是讲究吃得健康，“有健康才有将来”已经逐渐成为人们生活的信条;比如电信业的发展具有的微波辐射污染，现在家庭电脑普及，手机泛滥，电器设备应有尽有;交通业建筑业等噪音污染，特别是日益发达的交通事业，汽车成为代步工具，虽然加快了生活节奏，但也加速了尾气的排放，加大了环境污染;日益发展的工业企业排放的有毒物质，严重影响了土壤、森林、气候，破坏了生态平衡。导致很多地方出现泥石流，山体滑坡现象。以上这些引起的环境问题都会通过空气、呼吸携带传染物，传染到人体，给人造成致命的伤害。这些自然环境对人口身体素质的影响也都是决定性的。

所以，人口与环境的问题不是决定与被决定的关系，而是相互统一的关系。提高全民的人口素质，会使我们的环境更加的美化;同样创造更加美好的社会和自然环境会让人口素质迅速提升，只有这样，我们的社会才更加和谐，更加美丽!

导语：共享单车在退出以来就给人们出行提供了极大的便利，但是在这使用过程中也出现了很多问题。下面是yuwenmi小编为大家整理的优秀英语作文，欢迎阅读与借鉴，谢谢!

It has been billed as a hi-tech bike-sharing boom that entrepreneurs hope will make them rich while simultaneously transforming Chinas traffic-clogged cities.

But, occasionally, dreams can turn sour.

In the southern Chinese city of Shenzhen, more than 500 bicycles for hire have been found dumped in huge piles on the streets, according to reports.

Pictures showed jumbled stacks of vehicles nearly three metres high, with handlebars, baskets and other parts scattered on the ground.

City streets around the country have seen an explosion of the colourful bikes that users can rent on demand with a smartphone app and then park wherever they choose.

The sharing economy is taking off in China, where ride-sharing and Airbnb are increasingly commonplace.

From Shanghai to Sichuan province, bike-sharing schemes are being rolled out in an effort to slash congestion and air pollution by putting a country once known as the "Kingdom of Bicycles" back on two wheels.

Companies such as Ofo and Mobike, with their rival fleets of bumblebee yellow and fluorescent orange bikes, have been locked in a cut-throat battle for customers.

But problems have arisen when clients have abandoned their cycles.

"Some people these days just have really bad character," a man named He, who lives near where the stacks appeared, told the Southern Metropolis Daily.

"When theyre done using (the bike) they just throw it away somewhere, because theyve already paid."

In the past few days he witnessed people demolishing the bikes before discarding them on the side of the road, he said.

Residents told the paper that bikes had been piling up over the past week, either parked haphazardly by careless users or stacked by local security guards trying to clear narrow residential alleys and footpaths.

Zhuang Chuangyu, a representative at Shenzhens municipal peoples congress, said the city needed to step up regulation of the bike-sharing industry in order to improve traffic conditions and safety standards, especially since schoolchildren often used the bikes.

In 1980, almost 63% of commuters cycled to work, the Beijing Morning Post reported in 2015, citing government data. But by 2000 that number had plummeted to 38% and today it stands at less than 12%.

Car use, meanwhile, has rocketed. In 2010 China overtook the US to become the worlds largest car market, with 13.5m vehicles sold in just 12 months.

【参考译文】

这已被誉为高科技的自行车共享繁荣，企业家希望将使他们富裕的同时，把中国的交通堵塞的城市。

但是，偶尔，梦想可以变酸。

据报道，在中国南部城市深圳，有超过500辆出租自行车被丢弃在大街上。

图片显示车辆杂乱的堆高近三米，与车把，篮子和其他零件散落一地。

全国各地的城市街道都看到了五彩缤纷的自行车爆炸，用户可以按需智能手机应用程序租，然后公园无论他们选择。

共享经济是在中国起飞，在骑共享和Airbnb是越来越普遍。

从上海到四川省，自行车共享计划正在铺开，旨在通过将一个曾经被称为“自行车王国”的国家拖回两个轮子来减少拥挤和空气污染。

公司如G和Mobike，与他们的对手大黄蜂的黄色和橙色荧光自行车车队，被锁定在一个客户的割喉战。

但问题出现时，客户已经放弃了他们的周期。

“有些人这几天真的很坏，”一个叫他，他住在附近的栈出现，告诉南方都市报。

“当他们使用(自行车)，他们只是把它扔在某处，因为他们已经支付。”

他说，在过去的几天里，他亲眼目睹人们在把自行车扔到路边的时候拆除自行车。

居民告诉记者，自行车被堆放在过去的一周里，要么停地由粗心的用户或由当地保安试图明确狭窄的胡同和人行道堆放。

庄创宇，深圳市人大代表，需要加快共享行业为了改善交通条件和安全标准的自行车调节城市说，尤其是学生经常使用的自行车。

1980日，北京晨报报道，近63%的上班族骑车上班，引用政府数据。但是到了2000，这个数字已经降到了38%，而今天却还不到12%。

与此同时，汽车的使用量猛增。2010中国取代美国成为世界最大的汽车市场，与13.5m车辆在短短12个月内出售。

In todays world there is no big problem as a population. People began to worry about the support of the earth. And theres probably only standing room for everyone in the future.

The population of Lima is 5. It was 7 million in 1985, but it grew to 9. 1 million in 2000. Tianjin was 790 million in 1985. In 2000, it increased to 9. 7 million dollars. London, Osaka, Moscow, Beijing, Karachi, New Delhi, Jakarta, Seoul and Tehrans population growth has a similar city. Calcutta, Shanghai, New York, St Paul and STO saw a faster population explosion. Tokyo has 18 million 800 thousand in 1985. It became 20 million 200 thousand in 2000. Mexico City had 17 million 300 thousand people in 1985, but in 2000, its population reached 25 million 800 thousand!

What does population growth mean? This means increasing consumption and greater soil pressure. If more people are added to our world, the population has not been warned or taken any action, we will only stand in the end of twenty-first Century.

Each government and the United Nations should see that each countrys population and each city stay for the next 50 years.

[人口增长小学生英语作文

中国是一个人口大国。为了解决人口问题，我国政府决定实施独生子女政策。执行一段时间后，许多人不仅看到了这个政策的优点还有缺点。因此，人们开始推崇二胎政策。在我看来，二胎政策是应该实施的。作文

First of all, two-child policy is the gift for some only child. For some families, maybe the parents are only child and they also can have only child. Put aside the loneliness of their child, when their child grows up and they grow older, their child marry with an only child girl accidentally, the burden on their child and his wife is unimaginable heavy. Their child and his wife have to take care of two old couples. Usually, a young couple looking after an old couple is a little difficult; if the pressure increasing twice, how can they stand it. But if their parents have two children, they can share the burden of taking care of their parents. It would be much better.

首先，二胎政策对于一些独生子女来说是天赐的礼物。对于一些家庭来说，也许父母都是独生子女，而他们也只生一个孩子。抛开孩子的孤独不说，当他们的孩子长大了，而他们也变老了，他们的孩子又和一个独生子女结婚，这样的话,压在他们孩子和孩子妻子肩上的压力是不可想象的。他们的孩子和他的妻子不得不照顾两对老人。通常，一对年轻的夫妇照顾一对老人就有点难了;如果压力增加了一倍，他们怎么能忍受呢。但是如果他们的父母有两个孩子，他们就能分享照顾父母的压力。这样会比较好。

Secondly, two-child policy can guarantee the number of Chinese population. As the widely spread of one-child policy, some people have changed their conception about giving birth. If they firmly believe one-child policy, there will be more and more the dink. After several decades, our country will famous for lack of population.

其次，二胎政策可以确保中国的人口数量。由于广泛宣传独生子女政策，有些人已经改变了他们的生育观念。如果他们认同独生子女政策，就会有越老越多的丁克族。几十年后，我国就会以人口短缺而著名了。

In conclusion, one-child policy has out of date. And tow-child policy is needed and necessary. It can solve the problem of nowadays and the future.

总之，独生子女政策已经过时了。二胎政策是必要和必须的。这可以解决当前和未来的问题。

Population expansion is one of the most serious problems in the world. With better hygienic conditions and better medical care, fewer babies die today. But the birth rate remains unchanged. Moreover, the death rate has been lowered considerably by various kinds of progress. People generally live longer than they used to. All these contribute to a series of problem: shortage of national resources and food supply crowded cities and high rate of unemployment.

To solve all these problems, we must take measures to control birth rate. The first important step is to educate people-to help them understand the advantages of small families. Another important measure is to raise peoples living standards. When people full understand the consequences of population expansion, and when their standard of living is raised, the birth rate will decline without compulsion.

Though it is a difficult task, we should try in a thousand and one ways to carry out birth control If we fail to do so, the world will be too crowded to live in, and the natural resources will be used up. Then we will no longer survive on earth.

As we all know，the environmemt around us is getting worse and worse .In some places，we cant see fish swimming in the river or trees on the hills. Some people even have no clean water to drink. So I think we must do something to protect the environment. But what can we do?How to protect our environmemt ?For example，we can go to school on foot or by bike . we can use shopping baskets not plastic bags when we go shopping，and we can use both sides of the paper when we write .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.

中国是一个地震多发国，由于汶川地震的发生，成千上万的学生和老师失去了生命，假如你们学校要进行一场地震逃生知识讲座，假如你是讲座演讲人,名叫LinTao ，请据以下几方面写一个简单的发言稿，可以自由发挥,但至少要补充两条注意事项。

1.地震来临前要镇定，为了您自己和家人的人身安全请躲在桌子等坚固家具的下面;

2.摇晃时立即关火，失火时立即灭火;

3.不要慌张地向户外跑 ;

4.将门打开，确保出口;

5.在户外的空旷的场合，要保护好头部，避开危险之处;

6.在学校，购物中心、剧场时依工作人员的指示行动。(划线部分是要求填写补充的)

Dear classmates,teachers,headteacher headmaaster :

Im LinTao in Class 6,Im very proud Ive been chosen to speak to you . I make a speech : How to protect and save our lives? When the earthquake happens,how to protect and save our lives is important? In Wenchuan earthquake on 5.12 in Sichuan, thousands of students and teachers died of it.

You must be/keep calm when the earthquake happens.You go into under the table or hard furnitures fast.You must turn off or put out the fire so that you and your families are safe when the buildings are shocking.Dont run out nervously; Open the door and keep EXIT open.When you are in the open air,you must sit on the wide place/ground,such as :playground etc, you must look after your head and keep away from the dangerous things.

[安全问题英语作文

The first fifty years of the next millennium will be critical for the worlds population. By 2050 population growth should have leveled off, but by then well have 10 billion people--two-thirds as many again as we have today.The rate of population growth is something we can choose right now, though: its not something that just happens, but a matter of human choice. The choice is a complicated one,with many variables, but it remains a choice.

If we want to prevent a population explosion, we should take action now -or assist the poorer countries to do so. They need better government, better institutions, better labor and capital markets, better schools.

Anything that increases the value of womens time and adds to the cost of caring for a child makes a woman less likely to have that child. Since big families are often seen as safety nets for illness and old age, improving poor peoples access to insurance, pensions and welfare institutions also has a major impact. This can be as simple as rural credit, providing a means of saving. Finally, there is education--both for women and, perhaps even more important, for the next generation of children.

These steps are there to be taken, but there appear to be some countries that are not seriously trying at the moment. If we cannot achieve that we will certainly not control population.

That said, I dont feel pessimistic that we are going to run out of resources: we are becoming more efficient at producing food faster than the rate at which population is increasing. There is, however, a risk that we will wreck the environment so effectively that the world will no longer be an attractive place to live. That really would be a dismal outcome, to reach world population equilibrium only to find wed destroyed the natural environment in the process.

翻译：

第一个五十年的下一年世界人口将至关重要。到2050年人口增长应该趋于平稳,但那时我们将有100亿人——我们今天三分之二尽可能多的再次。人口的增长是我们可以选择现在,尽管:这不是刚好,但人类选择的问题。选择是一个复杂的,有许多变量,但它仍然是一个选择。

如果我们想避免人口爆炸,我们现在应该采取行动或者帮助贫穷国家。他们需要更好的政府,更好的制度,更好的劳动力和资本市场,更好的学校。

任何增加的价值,女性的时间和增加了的成本照顾一个孩子会让一个女人更不可能有孩子。自大家庭往往被视为安全网疾病和衰老,改善贫困人口获得保险、退休金和福利机构也有重大影响。这可以简单如农村信用,提供储蓄的一种手段。最后,还有教育,对于女性来说,也许更重要的是,对于下一代的孩子。

有采取这些步骤,但似乎有些国家不认真努力。如果我们不能实现,我们将肯定不是控制人口。

说,我不觉得悲观,我们将耗尽资源:我们正变得更有效地生产粮食的速度比人口增长的速度。然而,风险,我们将有效地破坏环境,世界将不再是一个吸引人居住的地方。这确实是一个可悲的结果,实现了人口的平衡却发现在这个过程中我们破坏了自然环境。

导语：现如今人口越来越多，下面是yuwenmi小编为大家整理的优秀英语作文，欢迎阅读与借鉴，谢谢!

To begin with, as the population grows, people consume much more natural resources, which often leads to excessive hunting. Second, with the increase of human activities, modern people take up more and more space. Which has a great impact on other species. Finally, the problem of pollution becomes more and more serious with the development of modern industry. More and more animals have to adapt themselves to the decaying environment or move to a totally different place, but not all of them are fortunate enough to survive the changes.

Solving this problem calls for, above all, the government’s efforts to control population growth, to decrease industrial pollution and to enhance the laws to forbid wildlife hunting. Moreover, common citizens should be aware of this ecological crisis and take on the responsibility of wildlife protection. In a word, only when the government and the common people make joint e f forts can we hope to find a satisfactory solution to this problem.

【参考译文】

首先，随着人口的增长，人们消耗更多的自然资源，这往往导致过度狩猎。第二，随着人类活动的增多，现代人占据了越来越多的空间。对其他物种有很大的影响。随着现代工业的发展，污染问题变得越来越严重。越来越多的动物不得不适应腐烂的环境或迁移到一个完全不同的地方，但不是所有的人都幸运地生存的变化。

解决这个问题首先需要政府控制人口增长，减少工业污染，加强禁止野生动物捕猎的法律。此外，普通市民应该意识到这一生态危机，承担野生动物保护的责任。总之，只有政府和老百姓联合起来，才能找到一个满意的解决办法。

The large number of our population has become one of the most serious problems of our society. according to a recent survey of the national bureau of statistics, there are more than 1.3 billion people in our country, which account for about 1/5 of all the people in the world. the same survey also predicts that our population will grow quickly in the years to come.

overpopulation has brought about a series of negative effects to our economic development and social security. in the first place, too many people impose a heavy burden on our environment. as a result, we suffer from a shortage of fresh water and natural resources. in the second place, as the supply of labor greatly exceeds the demand of the society, many people become employed. this is a source of social unrest. last but not least, we have to manufacture all kinds of products to meet the needs of the people, which causes environment pollution to our lakes and land.

serious though the problem seems, we have to take some measures to tackle it. on the one hand, the government should carry out more strictly the policy of family planning, thus reducing the total number of population. on the other hand, all the people should realize the harms of overpopulation. with the concerted efforts of all the parties concerned, we’re sure to solve the problem in the future.

[介绍人口英语作文

Given is a table which clearly illustrates the striking trend of aged population in China from 1990 to 2050. During the first 22 years, the number of people aged 60 and above ascended slightly from 97.19 to 136 million, and since 2012 it is predicted that this number will surge remarkably, reaching 410 million in 2050. Meanwhile, the proportion of aged citizens revealed and will reveal the similar trend, and it will reach 27.4% in total population.

Such a scenario can be naturally associated with various problems in aged society. For one thing, aged society is best characterized by the more burden for youngsters to support parents, which will enable younger generation to work harder. For another, compared with the past and today, the aged citizens will play a more important role in society. A case in point is their age for retiring will be extended. Therefore, a larger proportion of senior citizens have to take more responsibilities in work, family and society.

Accordingly, it is advisable for Chinese government to focus more eyesight on the coming challenges in the forthcoming future. Meanwhile, it is essential for China to work out comprehensive strategies to strengthen its social welfare to reduce young people’s stress.

Such a scenario can be naturally associated with various problems in aged society, but what resulted in this change above? For one thing, the past 30 years was best characterized by the policy of Family Plan in China, which enabled a host of families to have only one kid and enabled the proportion of youngsters to decline. For another, compared with the past, medical care and quality of life is and will be better; therefore, a larger proportion of people live longer. Consequently, the percentage of aged people showed and will show a trend of rise.

人口问题是当今世界上最大的问题之一，中国是世界上人口最多的国家，如果人口增长过快，将会带来许多严重问题，我们应控制人口增长。

China has a huge population, so the population of china will be very hard to control. Many specialists to solve this problem, but no one have a good

way to solve. Now, the population of china have about 1.3 billion population, and land holdings per head average only 0.82 hectares, also the plough holdings per head average only 0.106 hectares. It take up 43% of the world, so that means the resource of our country is very less now, and didnt surpass the half percentage of the world.

In this article, I will show you some information about the Chinese population policy.

The history of Chinese policy

Start with 1949, china was liberate. The leader of china Mao Zedong was make a policy which is encourage people to bear, because the Mao think a strong country need a huge population. So, in that time if a woman burn many children, then the woman will called “hero woman”.

And many people were born, that is why the population of china were very huge new.

In 1978, the family plan were start to use, because the population of china is too huge, and need some policy to control it. So Chinese government was start to use the family planning to control, that is the most useful way to control, they do many thing like welfare to the Chinese people.

At that time, many of the population were like thispolicy, because they can get much benefit from this event.

I have seen some poster of the family planning in 1978, and I think it is fool the common people in that time. So I always pity for all elderly Chinese

people, and my parent tell me it was very cruel that time. When you born more than one child, you will have much and much punishment from the government, like to injure your house, increase your tax levy, but not cruel as kill you, so Chinese is very kind that time!

Now, the government have been thinking the problem of the population, some peoplesay that we have been keeping the family planning, and other people think we have to stop the family, so it have two choose of family planning, each of it will have a big change in china.

Family planning

Family planning is a kind of population policy in the world which is very common, many country were use this policy to control the population, because it is very easy to use, and very convenient to manage the population. Also is very low-cost to use.

But it have some bad way, like it will have a big problem called aging of population, it made the many young peoples burden very huge, very hard to care two parent or more.

Conclude, family planning isnt the best way to control the population, and it can bring many problem to the country. But we cant find another way to control the population, so we just can use this policy.

The policy of population now

One Chinese leader of family planning department said that we have to keep going for family planning forever, and china need much and much strict family planning to control our population.

Then many specialist to publish their own idea of family planning, all of

ideas were talk about to weaken or stop the family planning, and give some advice of population. Here I would like introduce some specialist ideas.

Chinese population is very large now, if we stop growing immediately, it will have a big problem call aging of population. If this problem happen, the young people will be very hard to provide their family.

Population will be stop growing to 1.8 milliard if we dont do anything, so that is a good way to control the population and dont have much shortcoming. It can be a better way to control the population, isnt it

If we still using the policy of family planning, it will have a large population decrease, and will have aneffect of many thing. Productivity of china will be less, and manpower resource will be less too.

This is all my thinking

[中国人口英语作文

当今社会正以迅猛之势飞速发展，归根到底是高新技术产业的进一步深化。不容乐观的就是环境与发展之间的问题还没有得到彻底根除。而下面便是小编整理的关于环境问题英语作文 。

环境问题 英语作文【1】

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.

环境问题 英语作文【2】

With the improvement of our living standard, more and more people can afford a car.

As a result, our roads are more often than not crammed with cars.

However, with more and more waste gas being discharged by the cars, the problem of air pollution becomes even more serious.

So nowadays we advocate to lead a low-carbon life.

My suggestion is we should ride bikes more often instead of driving cars.

By riding a bike, we can not only exercise our body but also protect our environment.

Why not have a try, my dear friends?

环境问题 英语作文【3】

Recently,fog and haze has become a imminent threat which most northerners in China are facing.

While the cities of China have greeted striking speed of development with open arms,they suffer greatly from a persistent and dense haze of pollution and smog.

It is high time that we took some methods to protect the environment and ourselves.

Generally speaking,there are three effective ways.

First of all,the government should take into serious consideration the emergency and severity of the air pollution,and take measure to deal with it.

Such as more public transportation systems should be put in use,more energy-saving resources should be utilized.

What’s more,every little effort from individuals counts.

The citizens should contribute to the reduction of pollution by driving less.

Last but not least,try to reduce the time of outdoor activities,especially when the air quality is not good enough.

From what has been mentioned above, to protect our air,we must keep in mind that whatever we give out,we take back in the long run.

So we have to drive less,pollute less and make more changes.

[环境问题 英语作文

(一)全球气候变暖

由于人口的增加和人类生产活动的规模越来越大，向大气释放的二氧化碳(CO2)、甲烷(CH4)、一氧化二氮(N2O)、氯氟碳化合物(CFC)、四氯化碳(CCl4)、一氧化碳(CO)等温室气体不断增加，导致大气的组成发生变化。大气质量受到影响，气候有逐渐变暖的趋势。由于全球气候变暖，将会对全球产生各种不同的影响，较高的温度可使极地冰川融化，海平面每10年将升高6厘米，因而将使一些海岸地区被淹没。全球变暖也可能影响到降雨和大气环流的变化，使气候反常，易造成旱涝灾害，这些都可能导致生态系统发生变化和破坏，全球气候变化将对人类生活产生一系列重大影响。

(二)臭氧层的耗损与破坏

在离地球表面10~50千米的大气平流层中集中了地球上90%的臭氧气体，在离地面25千米处臭氧浓度最大，形成了厚度约为3毫米的臭氧集中层，称为臭氧层。它能吸收太阳的紫外线，以保护地球上的生命免遭过量紫外线的伤害，并将能量贮存在上层大气，起到调节气候的作用。但臭氧层是一个很脆弱的大气层，如果进入一些破坏臭氧的气体，它们就会和臭氧发生化学作用，臭氧层就会遭到破坏。臭氧层被破坏，将使地面受到紫外线辐射的强度增加，给地球上的生命带来很大的危害。研究表明，紫外线辐射能破坏生物蛋白质和基因物质脱氧核糖核酸，造成细胞死亡;使人类皮肤癌发病率增高;伤害眼睛，导致白内障而使眼睛失明;抑制植物如大豆、瓜类、蔬菜等的生长，并穿透10米深的水层，杀死浮游生物和微生物，从而危及水中生物的食物链和自由氧的来源，影响生态平衡和水体的自净能力。

(三)生物多样性减少

《生物多样性公约》指出，生物多样性“是指所有来源的形形色色的生物体，这些来源包括陆地、海洋和其他水生生态系统及其所构成的生态综合体;它包括物种内部、物种之间和生态系统的多样性。”在漫长的生物进化过程中会产生一些新的物种，同时，随着生态环境条件的变化，也会使一些物种消失。所以说，生物多样性是在不断变化的。近百年来，由于人口的急剧增加和人类对资源的不合理开发，加之环境污染等原因，地球上的各种生物及其生态系统受到了极大的冲击，生物多样性也受到了很大的损害。有关学者估计，世界上每年至少有5万种生物物种灭绝，平均每天灭绝的物种达140个，估计到21世纪初，全世界野生生物的损失可达其总数的15%~30%。在中国，由于人口增长和经济发展的压力，对生物资源的不合理利用和破坏，生物多样性所遭受的损失也非常严重，大约已有200个物种已经灭绝;估计约有5000种植物在近年内已处于濒危状态，这些约占中国高等植物总数的20%;大约还有398种脊椎动物也处在濒危状态，约占中国脊椎动物总数的7.7%左右。因此，保护和拯救生物多样性以及这些生物赖以生存的生活条件，同样是摆在我们面前的重要任务。

(四)酸雨蔓延

酸雨是指大气降水中酸碱度(PH值)低于5.6的雨、雪或其他形式的降水。这是大气污染的一种表现。 酸雨对人类环境的影响是多方面的。酸雨降落到河流、湖泊中，会妨碍水中鱼、虾的成长，以致鱼虾减少或绝迹;酸雨还导致土壤酸化，破坏土壤的营养，使土壤贫瘠化，危害植物的生长，造成作物减产，危害森林的生长。此外，酸雨还腐蚀建筑材料，有关资料说明，近十几年来，酸雨地区的一些古迹特别是石刻、石雕或铜塑像的损坏超过以往百年以上，甚至千年以上。世界目前已有三大酸雨区。我国华南酸雨区是唯一尚未治理的。

(五)森林锐减

在今天的地球上，我们的绿色屏障——森林正以平均每年4000平方公里的速度消失。森林的减少使其涵养水源的功能受到破坏，造成了物种的减少和水土流失，对二氧化碳的吸收减少进而又加剧了温室效应。

(六)土地荒漠化

全球陆地面积占60%，其中沙漠和沙漠化面积29%。每年有600万公顷的土地变成沙漠。经济损失每年423亿美元。全球共有干旱、半干旱土地50亿公顷，其中33亿遭到荒漠化威胁。致使每年有600万公顷的农田、900万公顷的牧区失去生产力。人类文明的摇篮底格里斯河、幼发拉底河流域，已由沃土变成荒漠。中国的黄河流域，水土流失亦十分严重。

(七)大气污染

大气污染的主要因子为悬浮颗粒物、一氧化碳、臭氧、二氧化碳、氮氧化物、铅等。大气污染导致每年有30-70万人因烟尘污染提前死亡，2500万的儿童患慢性喉炎，400-700万的农村妇女儿童受害。

(八)水污染

水是我们日常最需要，也上接触最多的物质之一，然而就是水如今也成了危险品。

(九)海洋污染

人类活动使近海区的氮和磷增加50%-200%;过量营养物导致沿海藻类大量生长;波罗的海、北海、黑海、东中国海(东海)等出现赤潮。海洋污染导致赤潮频繁发生，破坏了红树林、珊瑚礁、海草，使近海鱼虾锐减，渔业损失惨重。

(十)危险性废物越境转移

危险性废物是指除放射性废物以外，具有化学活性或毒性、爆炸性、腐蚀性和其他对人类生存环境存在有害特性的废物。美国在资源保护与回收法中规定，所谓危险废物是指一种固体废物和几种固体的混合物，因其数量和浓度较高，可能造成或导致人类死亡，或引起严重的难以治愈疾病或致残的废物。

Today the quality of our natural environment has become an important issue.

The world population is rising so quickly that the world has become too crowded.We are using up our natural resources and at the same time polluting our environment with dangerous chemicals.

If we continue to do this,life on earth cannot survive.Concerned people have made some progress in environmental protection.

Governments of many countries have established laws to protect the air,forests and sea resources and to stop environmental pollution.Still more measures should be taken to solve environmental problems.

People should be further educated to recognize the importance of the problems,to use modern methods of birth control,to conserve our natural resources and recycle our products.

We are sure that we can have a better and cleaner place in the future.

More than half of Beijings adult single children dont intend to have two kids, even though national policy allows them to do so.

The countrys family planning policy of the late 1970s restricted urban families from having more than one child to control population growth.

However, a new survey by the Beijing Administrative Institute shows 52 percent of those now-grown-up single children, who are allowed two offspring, do not want a second child.

Many cited economic pressures as a factor.

The results were released on Sunday at the Beijing Forum, organized by Peking University.

Beijing has roughly 2 million only-child adults.

More than 1,100 people from only-child families, aging 20 to 34, were polled.

Only 24 percent of respondents said they would like to have two children.

More than a quarter of respondents would opt for a "DINK" (double income, no kids) lifestyle.

Survey figures showed that respondents with a primary education wanted 1.1 children on average, those with a bachelor degree wanted 1.3, and those with masters or higher degrees wanted 1.5 children.

"Beijing has maintained a super low birth rate - less than 1.3 children in a family in average - for nearly 20 years, posing increasing pressure on the countrys aging population," Hou Yafei, a professor with the institute, said.

Hou said that the top four factors that determined peoples intentions to have children were "income, child care, housing and policy conditions".

"The government should encourage couples from one-child families to have a second child and should provide better welfare services."

This would promote population sustainability, Hou said.

The survey also found that people with higher education backgrounds intend to have more children because they are more confident with their financial security.

更多热门文章：

When I walk on the street, I found most people don’t obey the traffic rules, they just ignore the rules, when there are a lot of people go across the street, they just follow them. It is so dangerous, the accident is very easy to happen, the car will hit the people any time. For the safety, we should obey the traffic rules.

当我走在街上的时候，我发现很多人不遵守交通规则，他们忽视规则，当很多人过马路的时候，他们跟着人群。这是很危险的，很容易发生意外，车子会随时撞到人。出于安全问题，我们应该遵守交通规则。

As is seen from the two graphs, it is clear that with the rapid growth of U.S. population from 1800 to 1990, the number of its wildlife species no longer existing soared during the same period. Naturally, we can draw the conclusion that the sharp decline of wildlife species resulted from the population growth.

Two reasons may account for this phenomenon. To begin with, as the population grows, people consume much more natural resources, which often leads to excessive hunting. Second, with the increase of human activities, modern people take up more and more space. Which has a great impact on other species. Finally, the problem of pollution becomes more and more serious with the development of modern industry. More and more animals have to adapt themselves to the decaying environment or move to a totally different place, but not all of them are fortunate enough to survive the changes.

Solving this problem calls for, above all, the government’s efforts to control population growth, to decrease industrial pollution and to enhance the laws to forbid wildlife hunting. Moreover, common citizens should be aware of this ecological crisis and take on the responsibility of wildlife protection. In a word, only when the government and the common people make joint e f forts can we hope to find a satisfactory solution to this problem.

翻译：

从这两个图,很明显,美国人口的快速增长从1800年到1990年,其野生动物物种的数量不再现有同期飙升。自然,我们可以得出结论,野生动物物种的急剧下降导致的人口增长。

两个原因可以解释这一现象。首先,随着人口的增长,人们消耗更多的自然资源,这常常会导致过度的狩猎。其次,随着人类活动的增加,现代人越来越多的空间。有一个伟大的对其他物种的影响。最后,污染变得越来越严重的问题,随着现代工业的发展。越来越多的动物必须适应的环境或搬到一个完全不同的地方,但并非所有都幸运地在变化中生存下来。

要求解决这个问题,最重要的是,政府的努力来控制人口增长,减少工业污染和提高法律禁止野生动物狩猎。此外,普通公民都应该意识到这种生态危机和野生动物保护的责任。总之,只有当政府和老百姓共同e f堡垒我们希望能找到一个满意的解决这个问题。

中国的人口问题、社会问题一直是四六级考试考察的比较多的内容，下面是一篇关于人口老龄化的四级作文押题预测，大家趁机来给自己的作文充电吧。

For this part, you are allowed 30 minutes to write a short essay entitle Population Burden . You should write at least 150 words according to the outline given below in Chinese.

1.人口老龄化问题正困扰着中国。

2.人口老龄化带来的问题。

3.应采取怎样的措施，谈谈自己的观点。

题目分析：

在世界人口走向老龄化和发达国家人口老龄化发展的同时，中国人口老龄化也在加剧。人口老龄化的产生，正是社会进步、经济发展的结果。

参考范文：

Population Burden

Many countries will experience aging populations in the next century because of declining birth and mortality rates. China will soon join their ranks.

As for the issue of aging, its situation has been growing increasingly severe in spite of the fact most people are still ignorant of the problems it brings about. Firstly, with families becoming smaller and living pace escalating, it is even graver for families to care for aged members adequately. Secondly, aging causes a relative decline in working force in that fewer people have to support the increasing aged people. Consequently, the productivity of the whole society is affected to some extent. Thirdly and most importantly, the aging of population in China resulted from the successful implementation of family planning has not been synchronized with national economic progress.

The rapidity of the populations aging has made it more urgent for the adoption of countermeasures. No doubt they key is to build a solid economic foundation. Meanwhile, importance shall be attached to overall social progress by changing the backward situation in social security, welfare and service. Whats more, family care and community services shall also be encouraged.

重要词汇：

aging population 老年人口

birth rate 出生率

mortality rate 死亡率

ignorant of 不知道 不懂

graver 更严重的

adequately 充分地

productivity 生产力

implementation 执行

family planning 计划生育

rapidity 速度 在这用rapidity比speed 好~

countermeasure 对策

solid economic foundation 稳固的经济基础

Population old age人口老龄化

Population burden人口负担

Old age social security老年社会保障

Sustainable development可持续发展

练完这篇四级作文押题预测以后，考生要注意归纳总结，以后在考试中遇到这类社会问题的作文就不用怕了。

Do You Prefer High Salary or A Promising Job?

When it comes to the choice of career, some people prefer the job with high salary. Why?

Their reasons run as following: to begin with, high salary can bring them happy life; in addition, with high salary, they can do whatever they want.

But some others prefer to choose a job with promising future. They base their choice on the following reasons: on one hand, a promising job itself means a raise and promotion in the future; on another hand, job with a bright future will bring them honor and sense of pride.

As for me, if Im left to make the choice, Ill not hesitate to choose a promising job. First of all, I appreciate the honor and challenge it brings to me. At the same time, if I work hard, it will offer me a lot of opportunities including high salary, good position, etc.

China has become a country with an increasing number of old people. By old people we usually mean persons over the age of sixty. We often call them senior citizens instead of old men to show our respect.

Most senior citizens retire or no longer work full-time. They usually live in their own houses not far from their childrens, while the children of a few senior citizens have gone abroad and work or study far beyond the oceans. For certain senior citizens, tile years after retirement are not very enjoyable. First, they feel that their lives lose meaning for being at home all day. In addition, they may feel lonely, especially those without children around. Moreover, they become more concerned with their health, as they grow older, and worry a lot about their safety. At the same time, many senior citizens enjoy their lives. They feel free to do things they were not able to do when they were working and raising their families. They spend their time travelling, doing exercises or watching TV. They get together with their fellow members who have the common interests and equal free time.

In fact, there are some still continuing their work, not just for money, but to show their value. However, no one really wants to be old, and perhaps all like to be young forever.