保护眼睛的优秀英语作文(最新20篇)

It is undeniable that the worsening environment has become the biggest concern of the present-day world. Land resources are dwindling because of water loss and soil erosion. Waste gases poison the air we breathe. The rivers and lakes are polluted by waste dumped in them from factories. It is probably no exaggeration to say that deterioration of the quality of the environment threatens the existence of mankind itself.

Some people are of the opinion that the environmental problem is the price we have to pay for economic development. But I do not think that this argument is valid. After all, what is the point of economic growth if peoples lives are adversely alfected by worsening environmental pollution ?

不可否认环境恶化已成为当今世界最大的问题。土地资源在不断减少,因为水土流失。废气污染着我们呼吸的空气。河流和湖泊被工厂的 倒出来的废弃物所污染。这可以毫不夸张地说,环境质量的恶化威胁着人类的生存。

有些人认为环境问题是我们因为经济发展而必须要付出的代价。但我不认为这种观点是有效的。毕竟,经济增长的重点是什么?如果人们的生活环境被日益恶化、被严重污染了，那还有什么意义?

man and environment （人类和环境）

(1)the world we live in is becoming more and more intolerable because of environmental destruction.

(2)a lot of measures have been taken …

(3)however, the problem of environmental protection remains far from being solved.

the world we live in is becoming more and more intolerable because of environmental destruction. for example , forest destruction results in decrease of planting land and unpleasant weather. in addition, man is faced with problems of water pollution and air pollution.

a lot of measures have been taken. planting trees helps improve and beautify the environment. besides, laws concerning environmental protection have been put into effect and achieved good results.

however, the problem of environmental protection remains far from being solved. on the one hand, the environment pollution and destruction are getting worse and worse in the modern world. on the other hand, the lack of knowledge about the importance of protecting environment hinders the solving of the problem. in a word, there is a long way to go before we enjoy a clean and comfortable world.

[关于环境保护的优秀英语作文

Cherish resources, protecting the environment, only a few words, this is very important, for example, we go out to play, etc. The words will be held.

Earths resources are limited, could have uninterrupted growth, but because of the excessive development of people, these resources can hardly continue to regeneration. Water is indispensable to mankind, it gave birth to all life, he is our mother, but water has always been some dont know to cherish, will only waste, wasted a lot of water on earth, but only very little for us to drink the water, the other is the water of the sea, so we should protect water resources. Biological resources is very important also, he can let us survive, so we cant destroy any creature in the food chain, if damaged, will be big disaster, there are always some damn poachers, the capture of wild animals, such as elephants, rhinos, etc., so we need to protect any type of resource, let him not be damaged.

Protect the environment, cherish resources, from small start.

珍惜资源，保护环境，这单单几个字，却非常重要，比如我们出去玩等地方都会有这几个字。

地球上的资源是有限的，本来可以不间断的生长，可是由于人们的过度开发，这些资源都没法继续再生了。水资源是人类不可缺少的东西，它孕育了一切生命，他就是我们的母亲，可是水资源总是被一些不懂得珍惜，只会浪费的人浪费了，地球上的水很多，但只供我们饮用的水很少，其他的都是海水，所以我们要保护水资源。生物资源也很重要，他可以让我们生存下去，所以我们不能破坏食物链中的任何生物，如果破坏了，将发生大灾难，总有一些可恶的偷猎者，在捕捉野生动物，如大象，犀牛等，所以我们要保护任何资源，不让他被破坏。

保护环境，珍惜资源，从小事做起。

Nowadays, the environmental protection is becoming one of the most important issues in the world. Being one of the members of our society, what shall we do to protect the environment

First, stop using plastic bags, boxes and bottles. Stores should be required to use the bags, boxes and bottles which are made from paper. Secondly, more and more trees and flowers should be planted to keep our surrounding clean. People must be required to plant plants around their houses and work places.

Finally, we must control the pollution by law, according to which, polluted water and air exhausted from factories should be forbidden.

These are some of the measures that we can take to protect our environment and they are not hard tasks for us. Remember, the earth is the only planet we could live at present.

Since the first day, BNBM has paid more attention to protect the environment as its social responsibility, by developing green building materials, producing green products and creating green enterprise. According to the spirit of "From the nature, for the nature and return to the mature", BNBM has tried its best in developing new technology and improving equipment to reduce the pollution.

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。

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.

尽管世界发展得更快，更好，地球上的资源越来越少。为了保护它们，必须做些什么。

Save water. Water is the source of life. No water, no life. So its 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.

节约用水。水是生命之源。没有水，就没有生命。所以，我们这样做是非常重要的。我们不仅要保护饮用水和停止污染，而且充分利用它。

Save electricity. It is crucial. We cant imagine what the life will be like without it. Everyone should do his best to save electricity. Dont forget to turn off lights or other electric machines when we finish working.

节约用电。这是至关重要的。我们无法想象的生活就会像没有它。每个人都应该尽自己的最大努力节约用电。不要忘记关灯或其他当我们完成工作的电机。

Save forests. They are useful .Please stop cutting them down and use recycled paper instead. Make our world a green one to live in.

拯救森林。他们是有用的。请停止切割下来，用再生纸代替。使我们的世界成为一个绿色的生活。

Recycle useful rubbish. Plenty of rubbish can be recycled like cans,paper, bottles, and so on. We can save resources in this way.

回收有用的垃圾。大量的垃圾可以回收罐一样，纸，瓶，等。我们以这种方式可以节省资源。

Now, some animals have disappeared, and then take crocodile is close to extinction, though very fierce, but humans are more fierce. Because of some organs from animals has the prominent economic value, thus become a subject of human plunder use, become the main factor of extinct animals. Crocodile with sharp teeth, and huge appetite for food, we all said the crocodile, but more afraid of human, the crocodile in the eyes of human, the crocodile can be made into the luggage, handbags, wallets, shoes and other goods, so the crocodile, has now become almost extinct animals.

Animal friends, a lot of destruction of human will have serious adverse consequences, ecological environment caused by serious imbalance, so that the human living environment is destroyed. Eliminate animal, is to eliminate human oneself, if one day the animals in the world are gone, that human can survive? To protect animals, cherish this nature of every creature! Let us start from now, starts from me, to protect the animals, make the world a better place! To protect animals, is to protect human oneself.

现在，有些动物已经灭绝了，就拿快要灭绝的鳄鱼来说，虽然很凶猛，但人类更凶猛。就是因为有些动物身上的器官具有突出的经济价值，由此成为被人类掠夺利用的对象，成为动物灭绝的主要因素。鳄鱼长着锐利的牙齿，和硕大的食物胃口，我们都说鳄鱼可怕，但鳄鱼更怕人类，在人类的眼中，鳄鱼皮可以制成行李箱，手提包，钱包，鞋等物品，所以鳄鱼，现在已经成为快要灭绝的动物了。

朋友们，动物的大量毁灭对人类将产生严重的不良后果，造成生态环境严重不平衡，从而使人类的生存环境遭到破坏。消灭动物，就是在消灭人类自己，如果有一天世界上的动物全都消失了，那人类还能生存吗?要保护动物，珍惜这自然界里的每一个生灵吧!让我们从现在做起，从我做起，保护动物，使世界变得更美好吧!保护动物，就是保护人类自己。

读书认字、看图赏画、看人物、欣赏美景等都要用到眼睛。 所以我们要保护好自己的眼睛。

保护眼睛的英语作文一

We have two very beautiful eyes,theyre very important for us.We can watch TV,read books,look at every interesting things and so on with it.So how to protect it? Here are some advice:

1.Dont read book or other something for a long time.

2.After seeing something ,we should look at some trees or grass that far away from us.

3.Doing eyes excercise is also important,and dont give up dong that.

4.Dont read in poor light or in strong light,that will hurt your eyes.

Dont forget these,they will help you.

保护眼睛的英语作文二

we see with our eyes. if we have poor eyesight, it will be difficult to see everything clearly. so its important to take good care of our eyes. its quite unbelievable that an eye ball is the same size as a table tennis ball. in fact the eye ball is like a kind of mirror. we should do eye exercises every day. we also need to have a rest after a long period of reading.

保护眼睛的英语作文三

It is important for everyone to keep good eyesight. But do you know how to protect your eyesight?重要每都保持良视力知道何保护视力

First, dont keep your eyes working for a long time. Youd better have a rest by looking in the long distance after you have studied an hour or so.

首先要让眼睛工作间休息看我远程习您

Second, pay attention to the following: Dont read in the sun or in a poor light; dont read in bed or in a moving bus. And when you read you should keep the book away from your eyes for about a foot.其要注意几点:要阳光阅读或光线要床阅读或公共汽车行驶阅读本书应该保持眼睛远离约英尺

And third, do eye-exercises every day. It will also help you keep good eyesight.第三做眼每练习帮助保持良视力

If you obey the rules above, I think, you may prevent your eyesight from becoming short-sighted.(遵守述规则我认能阻止视力短视

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.

人类只有一个地球。他是生命的摇篮，是人类共有的家园。然而，环境污染与生态破坏已经对人类的社会经济发展和人们的正常生活构成了现实威胁。爱护环境，崇尚文明，无疑是人类自身的道义和责任。

There is only one earth. He is the cradle of life, is the homeland of all mankind. However, environmental pollution and ecological destruction of normal life has been on the social and economic development and peoples constitute a real threat. Care for the environment, advocate of civilization, is the humans moral responsibility.

我们渴望干净的地球，渴望健康的地球，渴望环保的家园，渴望绿色，健康，卫生的社区……让我们用爱心去关注环境的变化，用热情去传播环保的观念，用行动肩负起环保的重任。从我做起，从现在做起，从身边的点滴小事做起，把环保承诺变为实际行动。

We desire to clean the earth, to earth for environmental health, home, eager to green, health, the health of the community...... Let us love to pay close attention to changes in the environment, with enthusiasm to spread the idea of environmental protection, with action to shoulder the responsibility of environmental protection. Begin from me, start from now, start from the side of the little things, the environmental commitments into actions.

记住，保护地球，就是保护我们自己。

Remember, the protection of the earth, is to protect ourselves.

The national level protection animal giant panda, have you ever seen giant pandas? Come and see! The following is a lovely giant panda, see how delicious it eats! The smile is so lovely.

You said, why so little panda, it is because of the destruction of the human disorderly cut down trees, dont take care of flowers and plants, destruction of the atmosphere, to lead to a drop in the panda, so we have to take care of the panda, the giant panda is herbivorous animals know, likes eating bamboo, but not as the giant pandas in the zoo keepers to feed their fruit. Wild panda anecdotes: in recent years, scientists found hidden cameras, male wild pandas left a breath marks on a tree, will lift a leg, like a male dog, and then the urine to the heights of the tree and. The higher the urine, the higher the social status of the male giant panda. Good play! Just like a dog! This is fun. Ax mountain in north of the city, we established a lush bamboo sea and the forest, form different from downtown chengdu "microclimate", in 1987, formally completed, now has developed into a specialized in endangered wildlife research and breeding, protection of education and education tourism, a nonprofit organization.

Do you know how pandas digest bamboo? Researchers have found that the giant pandas digestive tract is short and simple, and there is no such thing as a long, plant-eating animal with a thin gut and a complex stomach or a developed cecum. In addition, the giant pandas genome sequences announced in 2009, after they found the giant panda to the lack of some help in the digestive tract herbivores digest cellulose and hemicellulose (they are the main components of the fibrous plant diet) enzymes. This is confusing for researchers, and how does the lack of these necessary conditions digest bamboo?

Researchers use of gene sequencing technology, analysis of more than 5000 ribosomal RNA sequences, eventually in the giant panda, found a variety of digestive tract bacteria and some microbes are very similar to grazing animals. These help animals digest cellulose in their bodies, and seven of them are unique to the pandas digestive tract. Bye bye!

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

Earth late home to the survival of humans, its like mother, provides us with resources and conditions, who wouldnt want to make their homes more beautiful, but the reality is that we have been scarred earth. Environment protection has been urgent.

People often hang to protect the environment in the mouth, but really do not tend to some difficulties. Take plastic bags, people know that plastic bags can cause white pollution, also know countries of plastic limit, but people are still in use, the pollution of the environment around us and the examples. Such as most people know that improper waste battery recycling will pollute the environment, but many time we threw them right. In addition, examples of waste resources around us there are many, many, the use of disposable chopsticks, often forget to turn off the tap, etc., so I put forward the following advice according to actual situation.

Knowledge on environmental protection, strengthen the propaganda, education people listen to, watch the show about protecting the environment, reading the environmental knowledge, environmental protection issues, to fight the phenomenon of damage the environment.

Second, advocate citizens to save paper, save food, save water, save electricity, save fuel, save our limited resources.

Three, the damage items repaired reoccupy, prolong life, use cycle with more items, no or little use disposable paper products.

Four, set up specialized recycling of garbage recycling timely and reasonable use.

Fifth, guide citizens to buy items with environment mark and green logo, dont smoke, do not spit everywhere, do not use the item will damage the ozone layer.

Six, wildlife protection, do not pick flowers, not cut down trees.

Together we will create a beautiful home!

地球晚们人类赖以生存的家园，它就像母亲一样，为我们提供生存资源和条件，谁不想让自己的家园变得更美，然而现实情况是我们地球已经伤痕累累了。保护环境已刻不容缓了。

人们经常把保护环境挂在嘴边，可真正做起来却不往往有些困难。就拿塑料袋来说，人们都知道使用塑料袋会造成白色污染，也知道国家的限塑令的要求，可是人们还是在用，我们身边环境污染的例子还有很多。例如人们大都知道废旧电池回收不当会污染环境，但许多的时候我们却把它们随手一扔。另外，我们周围浪费资源的例子还有很多很多，使用一次性筷子，常常忘了关水龙头等，为此根据实际情况我提出以下建议。

一、加强环境保护知识的宣传，教育市民收听、收看关于保护环境的节目，阅读环保知识读物，讨论环境保护问题，与破坏环境的现象作斗争。

二、倡导市民节约纸张，节约粮食，节约有水，节约用电，节约燃料，共同节约我们有限资源。

三、把损坏的物品修理好再用，延长使用期，多使用循环用的物品，不用或少用一次性纸制品。

四、设置专门回收部让垃圾及时回收并合理利用。

五、引导市民购买有环境标志和绿色标志的物品，不吸烟，不随地吐痰，不使用会破坏臭氧层的物品。

六、保护野生动物，不采摘花朵，不砍伐树木。

我们共同，一定会创造一个美好家园!

导语：目前有越来越多的濒危动物,所以如何保护他们一直是我们的重中之重的任务。下面是yuwenmi小编为大家整理的英语作文，欢迎阅读与借鉴，谢谢!

There are more and more endangered animals at present,so how to protect them has been our task of top priority .Its wrong for people to hunt animals for their meat and feather,for they are our good friends.

We should protect them instead of killing them.Giant pandas,which are one of the endangered animals,live in the forests and live on bamboo lealves.They can just live safely in the natural protection zones.We should stop killing animal and protect them.

【参考译文】

目前有越来越多的濒危动物,所以如何保护他们一直是我们的重中之重的任务。是不对的人猎杀动物的肉和羽毛,因为他们是我们的好朋友。

我们应该保护他们,而不是杀死他们。大熊猫,这是濒危动物之一,生活在森林和住在竹lealves。他们可以安全地生活在自然保护区。我们应该停止杀害动物和保护他们。

Sea pollution is becoming an increasing problem for our planet and we have a responsibility to reduce sea pollution.

I need to describe the problem. Our ship currently dumps all its rubbish into the sea.Its easy to result in huge endanger. First of all, Non-organic substances such as plastic bags kill fish and whales. Because fish get trapped and whales cannot digest them. Secondly some rubbish is inherently toxic.

I can suggest some solutions. First and foremost we can create a better system of disposing of rubbish for instance. We ought to store rubbish. Next, we are supposed to make ships environmentally and friendly. A case in point is that we should stop providing plastic bags.

We must act now before it is too late!

假如你是李华，现任你们学校的学生会主席。你将代表学生会起草一份倡议书，号召全校同学行动起来，为环保运动做出自己的努力。同时下周六学校将组织同学在全市进行环保宣传活动，征召志愿者到校学生会报名。

注意：(1)短文应该包括以上所提供的主要信息，可适当发挥;(2)词数：120左右;(3)倡议书格式以提供，不计入总词数;(4)参考词汇：征召(新人) recruit。

15 May, 2010

Dear brothers and sisters,

____________________________________________________________________

____________________________________________________________________

Yours sincerely,

Li Hua

【参考范文】

15 May, 2010

Dear brothers and sisters,

On behalf of the University Students Union, I, the Chairman of the Union , am earnestly calling for your active participation in our environmental protection campaign. It is the duty of every global villager; man just can not sustain his glorious civilization without a rewarding environment, which will be possible only if man makes considerable efforts to protect the environment.

Do you cherish precio us opportunities to volunteer in our joint efforts in environmental protection? Here is a great one not to be missed by any enthusiastic youth; Right next Saturday, our university is to run a publicity campaign to advocate environmental protection across the city. The University Students Union will be in charge of recruitment of volunteers. Lets join our hands and take action immediately.

Yours sincerely,

Li Hua

How to protect our environment has become one of the biggest problems in the world. We do everything can do a real difference to our environment.

We need to pick up litter around us. Youd better join a programme to protect our environment. You mustnt cut down too many trees. We can protect factories from polluting the rivers.

We can do our best to keep the air clear! I hope everyone do these!

导语：环保不分民族，生态没有国界不要旁观，请加入行动者的行列今天节约一滴水，留给后人一滴血。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!

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 its 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 cant imagine what the life will be like without it.Everyone should do his best to save electricity. Dont 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. ​

【参考译文】

尽管世界发展得越来越快，地球上的资源越来越少了，但是为了保护地球，我们必须做些什么。

节约用水。水是生命之源。没有水，没有生命。因此，我们不仅要保护饮用水，停止污染，而且要充分利用它。

节约用电。这是至关重要的。我们无法想象没有它的生活会是什么样的，每个人都应该尽最大努力节约用电。当我们完成工作时，别忘了关灯或其他电机。

拯救森林。他们是有用的，请停止削减他们，并使用再生纸，而不是。让我们的世界成为绿色的生活。

回收有用垃圾。大量的垃圾可以循环使用，如易拉罐、纸张、瓶子等。我们可以这样节省资源。

On earth a vibrant, is full of lovely life. We need to cherish life, to protect us.

People have life, animals have life.

BC, appeared a man, for now, some people think that they will just social animals. In fact, said this man, that is, they descended.

Historically, many people have to kill animals at all costs. Take former guangdong, for instance, they are the most like to eat wild raw monkey brain, at that time, they get rid of skull live monkey dont feel cruel. For those too poor...

Now, in the zoo, we tend to see "please dont feed the" slogan. In order to let the passengers dont cast a prank. Once, an animal is eating the passengers throw plastic bags, ill.

So called for everybody, please protect the animals, wild animals less and less now let our home full of vitality!

地球上一片生机勃勃，到处都是可爱的生命。生命需要我们去珍惜，我们去保护。

人有生命，动物也有生命。

公元前出现了猿人，对于现在，有些人认为，他们只是会群居的动物。其实，说这话的人，也就是他们演变而成的。

从古至今，许多人曾不择手段的捕杀动物。就拿以前的广东人来说吧，他们最喜欢生吃野生猴脑了，那时，他们把活生生的猴子的头盖骨去掉也不觉得残忍。可怜了那些猴儿啊……

现在，在动物园里，我们往往会看见“请不要喂食”的标语。就是为了让旅客们别投搞恶作剧。一次，一只动物就是吃了旅客投的塑料袋，生病了。

所以，呼吁大家，请保护动物，现在野生动物越来越少了让我们的家充满生机吧!

Dogs are passionate, friendly and the most important of all, faithful. Many people view dogs as their life-time friends or even partner. However, not every people know How to protect them. In this essay, I will introduce to you specifically about how to protect dogs.Sometimes dogs are brave defenders of our livestock, whereas sometimes they are as fragile as we are. Dogs should not be feed with salt, otherwise they will suffer from a hair loss. You need totake your dog out for a walk once in the morning and once in the afternoon to make sure it is having a healthy life. Dogs need to take regular check-ups as well, in case it is infected.There is a popular saying goes, "you may have many pets in your life, but your pets just have you in his life", which has moved many people. Please take good care of your dear pets. Their destinies are completely on your hands.

[保护流浪狗英语作文

The dog is one of the most popular pets in the world. It ordinarily remains loyal to a considerate master, and because of this the dog has been called mans best friend. Class distinctions between people have no part in a dogs life. It can be a faithful companion to either rich or poor.

Dogs have been domesticated for most of human history and have thus endeared themselves to many over the years. Stories have been told about brave dogs that served admirably in war or that risked their lives to save persons in danger. When Pompeii--the Roman community destroyed by Mount Vesuvius in AD 79--was finally excavated, searchers found evidence of a dog lying across a child, apparently trying to protect the youngster. Perhaps few of the millions of dogs in the world may be so heroic, but they are still a source of genuine delight to their owners.

A dog fits easily into family life. It thrives on praise and affection. When a master tells a dog that it is good, the animal happily wags its tail. But when a master scolds a dog, it skulks away with a sheepish look and with its tail tucked between its legs.

People in the city as well as those in other areas can enjoy a dog. Medium-size or small dogs are best suited for the confines of the city. Large dogs need considerable exercise over a large area.

Dogs are not always well thought of, however. In recent years dogs in the city have been in the center of controversy. Some people have criticized dog owners for allowing their pets to soil sidewalks and lawns, although in some cities laws oblige owners to walk their dogs along street curbs. In turn, dog owners have argued that the animals serve as protection against vandals and burglars and thus protect their detractors as well as their owners.

When a person decides to own a dog, he should be prepared to care for it properly. For a dog to stay healthy it must be correctly fed and adequately groomed, and its medical needs must be met. For a dog to be well-mannered it must be properly trained. It should never be ill-treated or mishandled. Otherwise, it will bite in its own defense.

The wild ancestors of all dogs were hunters. Wolves and other wild relatives of the dog still hunt in packs for their food. Dogs have retained the urge to be with the pack. This is why they do not like to be left alone for long. Some breeds of dogs still retain the hunting instinct.

Dogs exist in a wide range of sizes, colors, and temperaments. Some, such as the Doberman pinscher and the German shepherd, serve as alert and aggressive watchdogs. Others, such as the beagle and the cocker spaniel, are playful family pets, even though they were bred for hunting. Still others, such as the collie and the Welsh corgi, can herd farm or range animals. Each of the dogs just mentioned is a purebred. A mongrel dog, however--one with many breeds in its background--can just as easily fit into family life.

Dogs have been with humans since prehistoric times. Over the years they have performed various services. They have pulled sleds over snowy tracts. They have delivered messages, herded sheep and cattle, and even rescued persons trapped in the snow. Dogs have served as a source of food, too. The ancient Romans are said to have prized certain kinds of dog stew. The Aztecs of ancient Mexico raised tiny dogs, thought to be the forebears of the chihuahua, to feed the large carnivores in the private zoos of the Aztec rulers. In the past dogs have even been worshiped as gods. Recently, they have been used in drug research, medical experimentation, and space science. Soviet scientists launched dogs into space to test the ability of mammals to survive the rigors of space travel before people were sent up.

Dogs are trained as guard dogs in peacetime by the United States Army and other military services. Because of their keen sense of smell, dogs are used by police at times to track down escaped prisoners. Law enforcement agencies also rely on the dogs acute sense of smell to uncover illegal drugs. And specially trained dogs serve as the "eyes" of the blind, guiding the steps of their sightless masters around obstacles and hazards.

狗是世界上最受欢迎的宠物之一。它通常仍然忠于一个体贴的主人,因为这个狗被称为人类最好的朋友。人们之间的阶级差别没有生活在狗的一部分。它可以是一个忠实的伴侣,无论是富人还是穷人。

狗驯化在人类历史的大多数时期,因此球员很多。故事被告知关于勇敢的狗,令人钦佩的战争或冒着生命危险拯救的人处于危险之中。当庞培——罗马社区在公元79年被维苏威火山——终于被挖掘,搜索者发现一只狗躺在一个孩子的证据,显然试图保护这个年轻人。也许一些世界上数以百万计的狗可能是英雄,但他们仍然是一个真正的喜悦主人的来源。

一只狗容易符合家庭生活。在赞美和感情。当大师告诉一只狗,它是好的,动物快乐地摇尾巴。但当主人骂狗,它潜伏了一个羞怯的外观和它的两腿之间夹着尾巴。

城市的人们以及那些在其他领域可以享受一只狗。中型或小型狗是最适合城市的范围。大型犬在大面积需要相当大的锻炼。

然而,狗并不总是值得思考的。近年来狗在城市里一直在争论的中心。有些人批评狗主人允许宠物土壤人行道和草坪,尽管在一些城市的法律迫使业主限制他们的狗沿着街道散步。反过来,狗主人认为,动物作为防范破坏者和窃贼,从而保护他们的批评者以及它们的主人。

当一个人决定自己的一条狗,他应该准备妥善照顾它。狗保持健康必须正确美联储和充分培养及其医疗需求必须得到满足。狗必须得到适当的训练表现得彬彬有礼。它不应该虐待或处理不当。否则,它会咬自己的防御。

所有的狗都是猎人的野生祖先。狼和其他的野生亲缘狗仍然集体觅食的食物。狗有保留的冲动与包。这就是为什么他们不喜欢独处太久。一些品种的狗仍然保留了狩猎的本能。

狗存在大范围的大小,颜色,和性情。一些,比如杜宾犬,德国牧羊犬,作为预警和积极的监督者。其他的,如小猎犬和可卡犬,好玩的家庭宠物,尽管他们的狩猎。还有一些,比如牧羊犬和威尔士科基犬,可以群农场或范围的动物。每个狗刚才提到的一个纯种。一条杂种狗,然而——有许多品种的背景——可以很容易适应家庭生活。

狗自史前时代以来一直与人类。这些年来,他们已经在执行各种服务。他们已经把雪橇在雪大片。他们传递的消息,赶羊和牛,甚至救出被困在雪地里的人。狗也有担任过的食物来源。古罗马人据说炖珍贵的某些种类的狗。古代墨西哥的阿兹特克提出了很小的狗,认为是吉娃娃的祖先,给阿兹特克的私人动物园大型食肉动物的统治者。在过去的狗甚至被崇拜为神。最近,他们被用于药物研究、医疗实验,和空间科学。苏联科学家发射了狗测试能力的哺乳动物生存的艰辛太空旅行之前人打发了。

狗是训练有素的警犬在和平时期的美国军队和其他军事服务。因为他们的敏锐的嗅觉,狗被警察有时用来追踪逃跑的囚犯。执法机构也依靠狗的敏锐的嗅觉发现非法毒品。和受过专门训练的狗充当盲人的“眼睛”,指导的步骤失明的主人在障碍和危害。