高二年级英语作文：明智对待手机BeWisetotheCellPhone（优秀20篇）

Talking of examinations,I feel that they are one of the important

activities in school life.Since the first day I went to school,I have had to

deal with them almost every day.All through my secondary school days,I have gone

through al kinds of exams,entrance exams,tests,quizzes and so on. I have tasted

the flavour of happiness,sadness and laughter.

Before every exam,there is always a certain time for me to suffer.The world

before me seems to be sad and gloomy.I feel that all my books are

disgusting.During examinations,I am always like a computer.I try hard to squeeze

out every piece of information to answer my questions.A machine has no

feelings,but I am nervous,my heart beats hard.

After the "swesty battle",the world seems to be bright again.A disaster is

over.I become lively again,and begin to discuss every problem with my

classmates.

there are gains for all our losses,

there are balms for all our pain;

but when youth, the dream, departs

it takes something from our hearts,

and it never comes again.

we are stronger, and are better,

under manhood’s sterner reign;

still we feel that something sweet

followed youth, with flying feet,

and will never come again.

something beautiful is vanished,

and we sigh for it in vain;

we behold it everywhere,

on the earth, and in the air,

but it never comes again!

Time flies like an arrow, and soon it comes to the annual Mid-Autumn

festival. Every year on this day, every household should sing and dance. This

year we are no exception.

This afternoon, we went to grandmas home three, then it was already

evening, so we eat the family reunion dinner ready to top, and there are

lucrative prizes. ,

We started to get the top pick, and we brought a red and red porcelain bowl

for six dice. He started to get the top pick.

First is the grandmother, grandmother seemed to have a good luck today, all

of a sudden is a quaternary, see dad stopping on the dog, a see will know that

bad luck, there is not even a scholar. Im ok, there are three red, one for

don...

We went to the roof of the house for the first time.

My father cut a moon cake to grandpa and grandma first, and then the moon

rose slowly from the treetop, looking so noble and elegant. She is covered with

silver yarn, with lightsome pace, step by step toward the sky, her soul,

gorgeous and elegant, gold in her white, white like a woof mercury, gold like a

pearl, the bright is dazzing, she will be soft moonlight sprinkled on the earth,

the moon like water!

Environmental problems are as big as not for individual country or individual people to address. In other word, we have reached the stage that environmental problems be solved for international view. To what extent do you agree or disagree?

In recent years, many nations have become more aware of the environmental issues each nation faces, such as air and water pollution. The question is, are the environmental issues a national problem or an international problem? It is my belief that the environmental issues have grown to the point of becoming an international problem needing international cooperation to resolve.

Because of the differences in environmental policies, resources and technology, international cooperation could provide quicker results and have a greater impact on bringing resolution to environmental problems for nations of differing environmental policies and of lesser resources and technology. By pooling international resources and technology to address the environmental problems, the disadvantaged nations are provided the assistance needed. Otherwise their environmental conditions deteriorate ultimately affecting the resources and environment of the world as a whole.

One of the difficulities to an international resolution to environmental issues is the difference in individual nations view and policies toward environmental protection. In order for international cooperation to occur and succeed, the nations of the world must submit themselved to international standards and supervision by an international commission elected by the participating nations of the world. All members must agree to abide by the standards established.

The environmental issues facing each country are not unrelated to the well being of the rest of the world. The impact is long term and international in scope. Without international cooperation and agreement to address such environmental issues as glacial melting at the South Pole, depletion of the ozone layer, water pollution, air polution, etc., the environmental conditions of the world will deteriorate to the detriment of every nation, not just those that ignore or lack the resources and technology to resolve their individual environmental problems.

As part of the same planet, it is the responsibility of each individual and nation to protect the global environment. Only international cooperation will provide the timely solutions and the effectiveness needed to stop the deteriorating global environment.

Every year, when the college entrance exam is over, students will be very

happy and feel relieved, so they will throw away books to show the hard journey

is over and the new chapter has opened. Most young people need to face the

college entrance exam. It seems that the years’ hard working is expected to

deserve a good result. Before the result comes out, students will celebrate by

hanging out all the night, such as go to KTV with their friends. Without the

pressure of study, they feel great joy. This is the unforgettable memory for

most people. No matter how old they are, they will never forget about the crazy

days of youth. The long-term year’s study and fighting for the future with their

classmates make their youth become special.

导语：相信大家都有过假期，那么你们的假期是怎么度过的呢?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!

I’m going to the sun on my holiday. I will go there by a spaceship. I will take a big blue spaceship。

then I’ll pilot the spaceship to the sun. the sun is very hot. So I put on the super-shirt. In the morning, I will have some sun burger for my breakfast.

At eight o’clock, I will play with my friends there. they are super dog and super girl. Super dog is white and black. Super girl is very clever. Super girl and super dog like to play with me. So I play with them for forty minutes. then I do my homework in my little red room on a small blue table. After my home work, I will have my lunch. I will eat sun salad. I will make some red toy bear to the sun babies. I will have red juice, red fish and red rice. All the things are red. then I need a lot of water on the sun because the sun is too hot. So I will walk to the spaceship. I’ll pilot the spaceship to the earth.

【原文翻译】

我的假期我是要去太阳。我将坐着宇宙飞船去那。我需要一个大的蓝色的宇宙飞船。

然后我将会驾驶宇宙飞船到太阳。太阳上面很热。所以我穿上超级衬衫。在太阳的早上,我将吃一些汉堡当早餐。

八点的时候,我要跟我的朋友在那里玩耍。他们是超级狗狗和超级女生。超级狗狗是白色和黑色。超级女生是非常聪明的。超级女生和超级狗狗喜欢和我玩。所以我跟他们玩了四十分钟。然后我做我的功课,在我的小红的房间在一个蓝色的小桌子。我的家庭作业后,我将有我的午餐。我要在太阳上吃沙拉。我将做一些红色的小熊玩具给太阳宝宝。我将有红汁,红色的鱼和红米。所有的东西都是红色的。然后在太阳上我需要大量的水,因为太阳太热。所以我要走时候，我将会驾驶宇宙飞船到地球。

There is an old saying in China“people need face while the trees need skin”，the meaning is that Chinese people pay special attention on the dignity. Loving face is most people’s behavior, so they like to brag, they enjoy being adored by others. About the face problem, I think we should not take it serious, we are not living for other people, we are living for ourselves. The real self-esteem is from our hearts, not from other people. Chinese people like to brag, they brag about their property, hoping that people will respect him. The funny thing is that only the fake successful people will brag, the real one is silent, they keep working hard, the successful career supports their self-esteem. If we want people to respect us, we should show our reality, be nice to them, never brag about ourselves.

在中国有句老话“人要脸树要皮”，意思是中国人很注重尊严问题。爱面子是大多数人的习惯，他们喜欢吹嘘，享受被人崇拜。关于面子问题，我认为我们不应该把它看得很重，我们不是为别人而活，是为自己而活。真正的自尊是出于我们的内心，不是看别人。中国人喜欢吹牛，他们夸大自己的财产，希望人们尊重他们。有趣的是只有不成功的人才会吹牛，真正成功的人是沉默的，他们努力工作，事业的成功支撑着他们的自尊。如果我们想要别人尊重我们，我们应该展示我们真实的一面，对人友好，不要吹牛。

The May Day golden week I play very happy.

The first day, we play the family to go to the ocher mountain. To ocher mountain before, my mother bought me a hammock, let me to the mountain swings in the woods. We came to ocher mountain, all the rest place occupied by others, we very not easy to find a big rock and sits down. I think: ok, now can play a good play. Mother found two trees near the tree to tie a hammock, I lay in a hammock, like a big spider is very comfortable to sit in the middle of the network. At noon, the weather some hot, I bought ice cream and shoveled eat it.

On the way home, mom and dad let me as a guide, I have a good memory, so easily take mom and dad out of the "maze".

Ah! Ocher mountain is a good place for leisure.

五一黄金周我玩得可痛快了。

第一天，我们全家到赭山去玩。来赭山之前，妈妈给我买了吊床，让我到山上树林里荡。我们来到赭山，所有休息的地方都被别人占领了，我们好不容易才找到一块大石头上坐了下来。我想：现在好了，可以痛痛快快的玩一玩了。妈妈找了两棵挨得较近的树木把吊床系好，我就躺在吊床上，像一只大蜘蛛十分舒服坐在网中央。中午，天气有些热了，我又买了根冰激凌大口大口的吃了起来。

在回家的路上，爸爸妈妈让我当向导，我记忆力强，所以很轻松地把爸爸妈妈带出了这个“迷宫”。

啊!赭山真是休闲的好地方。

Mother, it is we are thankful people was born. Who is how many years, every day in the laundry to cook for us, who are both in sorching summer, or in the snow after send us to school, and hurried off to work, who is lets us grow from day to day in her arms, and she is getting old, who has raised us, but I do not wish for any return. Is mother! Life, some people are looking for a mothers love, but dont ignore the ubiquity of maternal love!

Remember the night I was only five years old, it was raining, I have a fever, my father on a business trip is not at home, mother picked up I will go to the hospital, my mother in the hospital a night didnt sleep a wink, eyes staring at the bottle of intravenous drip, until my fever is gone, she finally breathed a sigh of relief. Then my mother again give me water, and to buy me a delicious. Looked at his mother busy figure, I secretly in my heart swear: must study hard repay mother.

Another time, just learning English month, I had to 81 points, the bottom of the class. In the face of such scores, I would be ready to get training, returned home after mother knew, not only not scold me, comfort me, dont lose heart, and now the English course at the beginning, as long as you listen more from now on, read more, write more, practice more. Performance will improve soon. Mother said. This time is I overlooked your English study, later I accompany you a piece of learning. This situation really than scold me, hit me also makes me uncomfortable. From then on, no matter how busy mom, always "nutrition" for me, everything comes to him who waits, the mid-term exam, I achieved good scores of 95 points.

Mother, you have to use solid arms hold up a piece of blue sky for me, when I am frustrated fall, is the care you with infinite comfort me, encouraged me, so I can stand up again. Today, I will use my growing plump wings for you -- -- my mother from the rain.

母亲，是我们一出生都值得感恩的人。多少个岁月，是谁每天起早贪黑的为我们洗衣做饭，是谁无论在炎炎夏日，还是在冰天雪地送我们上学之后，又匆匆赶去上班，是谁让我们在她的臂弯一天天成长，而她却一天天变老，是谁养育了我们，却不求任何的回报。是母亲!生活中，有些人在寻找着母爱，却不忽略了无处不在的母爱!

记得5岁那年的一天晚上，天下着雨，我发烧了，父亲出差不在家，母亲抱起我就去医院，在医院里妈妈一宿没合眼，两眼一直盯着瓶子里的点滴，直到我的发烧退了，妈妈才长舒了一口气。接着妈妈又是给我喂水，又是给我买好吃的。看着妈妈忙碌的身影，我暗暗在心里发誓：一定要努力学习报答妈妈。

还有一次，刚学英语月考时，我只得了81分，全班倒数几名。面对这样的分数，我做好了挨训的准备，回到家妈妈知道后，不但没有训我，反而安慰我，不要灰心，现在英语这门课刚开始，只要你从现在开始多听，多读，多写，多练习。成绩会提高很快。妈妈还说。这段时间是我忽略了你的英语学习，以后我陪你一块学。这情景真比骂我，打我还令我难受。从那以后，妈妈不管多忙，总是为我“补充营养”，功夫不负有心人，期中考试时，我取得了95分的好成绩。

母亲，您曾用坚实的臂弯为我撑起一片蓝天，当我受到挫折跌倒时，是您用无限的关怀安慰我，鼓励我，使我能重新站起来。而今，我也要用我日益丰满的羽翼为您————我的妈妈遮风挡雨。

Mothers love

All the people often say:"mothers love is the greatestin the world!"Yes,mothers love is very great.We mother give us very too much love.But a big number of us. dont know our mother give us too much love.Mothers are very tired .We dont know make her to rest.Mothers are thirsty.We dont know give they a cup of tea.When we beacome to father or mother.We know our parents give us much love .So,at this moment.We mut reture a good grades to our parents.

My life

My school life is a lot of fun. I like studying in the classroom with my

lovely classmates. We get on well with each other. We play sports and sing

together. I often miss my classmates and teachers if I don’t see them for a long

time. But sometimes our teachers give us too much homework. Parents and teachers

often put great pressure on us.

I wish a happy life in a big city in the future. I will live in a big house

with a garden, and drive to work. I will travel a lot in my spare time.

I’ll work hard so that I can go to a good university. Then I can get a good

job in the future and my dream will come true.

I like to read books so much, especially the comic books, Japanese comic books are my favorite. When I go to the bookstore, I will hang around and find all kinds of comic books to read. I will spend a day there, stay alone and read the books. Going to the bookstore enriches my casual time, I really enjoy the time there.

【原文翻译】

我很喜欢读书，特别是漫画书，日本的漫画书是我的最爱。当我去书店的时候，我会到处逛，找各种各样的漫画书来读。我会花一天的时间在那里，独自一人看书。逛书店丰富了我的休闲时光，我真的很喜欢在那里的时光。

Water is very important for us. We must drink water everyday. We can’t live without water. Water is everywhere around us. At home, we use water to wash clothes, to wash dishes, to cook rice, to clean the flat, to have showers, to make drinks, to clean our teeth, to have a bath and so on. At work, people use water to put out fires, to grow vegetables, to make things in factories and so on. We also can swim in the sea. Water is important for us, isn’t it?

A poem:

Water has no taste at all.

Water has no color.

Water’s in the waterfall.

The pump.

The tap.

The well.

Water is everywhere around us.

Water is in the rain.

In the stream.

In the pond.

And in the river.

And in the sea again.

There isn’t much water on the earth. we must to save it. It is not inexhaustible.

It is very valuable.

我热爱地球，热爱我们赖以生存的家园。爱她的青山绿水，爱她的碧草蓝天……

I love the earth, love for our homeland. Love her beautiful country scene, love her green to the sky......

在四野飘香的花丛中，我和蝶儿一起嬉戏、欢笑;在郁郁葱葱的森林里，我与小鸟一起追逐、歌唱;清晨，我迈着轻盈的步履去原野上踏青，雾霭缭绕着、白纱般的柔柔地漂浮在空中。吮吸着花草的芳香， 欣享着阳光的沐浴，我被陶醉在这如痴如醉的梦幻里;夜晚，我坐在稻谷飘香的农家小院里，仰望着璀璨的星空，聆听着蝉鸣嘹响，蛙声如潮，仿佛置身于一个童话般的王国。

In the fields the fragrance of flowers, butterflies, and I play together in laughter; a wild profusion of vegetation in the forest, I chase, with birds singing; early in the morning, I walked with light steps to the fields on the outing, mist shrouded with white veil, gently floating in the air. At the scent of flowers and plants, we enjoy the sun bath, I was intoxicated in the dream of the night, delude one to folly; I sat in the fragrance of rice farmers in a small courtyard, looking up at the bright sky, listening to the sound of cicadas Liao ring, frog sound waves, like being in a fairy tale kingdom.

多么好的环境啊!怎能容许被破坏呢?

Very good environment! That would allow the destroyed?

人类的高科技，大排放，无止地开采……恐龙因环境而灭绝，而人类却要把自己毁灭掉吗?

The high-tech, high emissions, the endless exploitation...... The dinosaur extinction due to the environment, human have to destroy ourselves?

保护环境与维护生态平衡的历史重任要落到我们跨世纪一代的肩上。让我们都来关爱自然，热爱地球吧，手挽手、肩并肩、心连心地铸起一道绿色环保的大堤，捍卫资源、捍卫环境、捍卫地球、捍卫我们美好的家园吧!

The historical responsibility Protect environment and maintaining ecological balance to fall on our cross century generation shoulder. Let us all come to love nature, love the earth, hand in hand, shoulder to shoulder, heart to heart to set up a green dam, defend, defend, defend the earth resources and environment, protect our beautiful homeland!

In Chinese culture, it is every childs duty to return their parents as

they grow up. The children know their duty and they work hard to give parents a

better life. As a child, I was grateful to my parents as they gave me all their

love, so I made up my mind that I must earn a lot of money and then I could pay

back my parents money. But as I grew up, I realized that money was not that

only way I could return my parents. Whats more, my parents dont care about my

money, and they just want to spend more time with me. When I grow up, I will

move out and probably live far away from them. At that time, if I come home

often, they will be happy. I think every parent just want care from their

children.

I have not only a lot of common friends, but also a special friend. He is my father. My father isn’t tall but he is very kind and lovely. He usually helps me with my maths and physics in the evening. At weekends he plays chess, cards with me. When I am in trouble. He always help me in time. I prefer my father to any other friend. I think he is not only a good father, but also one of my best friends. I love my father very much.

As it is known to us all, there are 55 minority groups in China, each with its traditional customs, costumes and culture. Now let’s take a look at the Tibetan Minority.

The Tibetan Minority group live in Qinghai, Gansu, Sichuan and Yunnan Province. And the highest ridge in the world─beautiful and mysterious Tibet is their major habitat .

As the fertilized prairie stretches around the habitants as far as the eyes can see, most people live on animal husbandry, raising sheep, goats, cattle and growing a special kind of plant called Qingke. On account of the unique climate, people often wear warm and comfortable boots in winter, and they are always dressed in delicate robes which are made of the fur of sheep. Often they take off one sleeve of the clothes and tie it around their waists in order to work easily and use it as warm quilts at night.

Both men and women there like wearing silver ornaments, which look very mysterious and full of magical power. And they are good at singing and dancing, and the men there can have braids too. When they meet an important guest, they will present him or her a Hada, a piece of long white silk cloth to show their respect. And they will also treat the guest to a special kind of drink called Suyou Tea, which some people find hard to enjoy.

Besides, the habitants have developed both their own written and spoken languages, and the long poems they wrote play an important role in Chinese literature. And there are many well-protected culture relics as well, taking the grand Budala Palace as an example. It is a historical museum as well as an art treasury, where people can share their spirit belief in Buddhism and get artistic entertainment of the carved paintings and the beautifully-written chirographies.

The Tibetan ethnic group is also famous for its strange custom in funeral. Thinking that the soul belongs to the sky after a person dies, they usually put the body on a platform outdoors, spray on it and wait the condors to come to eat the body. In this way, they believe the soul goes up to the sky.

The Tibetan Minority is brimming over with deep emotions. The people there are very zealous and hospitable and they live freely and happily on the spacious grassland. Their history and culture contribute to the diversity of China, so we certainly should protect them and get them popularized and let them receive great respect they deserve.

儿子，爸爸妈妈相信你很棒，你一定可以做得更好!爸爸妈妈希望你在学校能更加认真仔细点，在李老师的带领下，能养成阅读的好习惯。

你是个天真可爱、善良友好、满脑子装着一些奇思怪想的女孩。你孝顺，总是在妈妈很累的时候为妈妈倒杯水，然后安静地在一旁画画，让妈妈安静休息片刻;你也很有爱心，会帮助路边卖艺的小姐姐，还有对小动物的照顾----下学期，妈妈希望你能更加专注学习，上课认真听讲，那就是完美啦!

你是爸妈的好孩子，在新的一年里，爸妈希望你能多自觉学习，自觉做功课。自己的房间收拾整洁;你已经是个大孩子了，做任何事情都认真去做得最好，不要马马虎虎，多点耐心。

宝贝，你是一个非常活泼可爱的小男孩，在激励会说很多很多的话，会提很多的问题，性格开朗，很聪明，有很会表现自己。妈妈、爸爸希望你把你在家里的这一股劲表现在学校里，好吗?要多和同学交流，多去参加一些活动，把自己的优点发挥出来，爸爸妈妈在这里给你加油!

过年了，你又长大一岁了，是个大孩子了，要好好学习，认真听讲，团结同学，做作业的时候不要再粗心大意了，妈妈知道你会很棒的，加油哦!在新的学期里学习进步，身体健康!

你是个聪明可爱的小女孩，在学习上严格要求自己，按时完成作业，特别是上学后，你各方面都有很大进步，相信你在新的一年会有更喜人的成绩，加油!

宝贝，看到你一天天茁壮成长，爸爸妈妈打心眼里感到高兴，生活中你待人诚恳有礼，富有爱心，学习上听老师和家长的话，认真努力，真是个好孩子!希望你以后能改掉粗心的毛病，并且要不怕困难，勇往直前，做一个更出色的好孩子!

张楠很爱学习，但是很不细心，写作业不太认真，希望你能尽快改掉自己的坏习惯，做个好学生、好孩子。

你在妈心目中永远都是妈妈的好孩子，但是你现在不是幼儿园的小孩了，读小学一年级了，儿子，你长大了。妈妈希望你在小学的校园里学得更多，学得更棒!加油哦!

I think everyone will have a busy and interesting weekend. Now, let me introduce my busy weekend to you.

On Saturday morning, I am going to the bookstore. I’m going to buy some story-books and a Chinese-English and English-Chinese dictionary. I like reading story-books. I find them very interesting. Then I am going home. My home is near the bookstore. So I am going by bike. I like riding my bike. In the evening, I am going to play piano. Playing piano is my hobby.

On Sunday morning, I am going to do my homework. Now I am in Grade Six. I want to enter a good middle school next year. So I must study hard. In the afternoon, I am going shopping with my parents and my little brother. My mom says she is going to buy a pair of sneakers for me. I love going shopping. I think all of the girls like going shopping. Am I right.

On Sunday evening, I am going back to school by school bus. I love my weekend, how about you? Tell me something about your weekend.

One person when I am sad always comfort me, when I am happy we laugh together, when I meet with difficulties, always help me, every time I am trapped by difficulties, she always helped me, he is my best friend - Yang Yang

She didnt know is my fourth grade, when she came to our class, grow tall, short hair, I thought she was a boy, a look, no, she wore a pink blouse, boy wont wear pink coat. Yang Yang he was behind me, we both became friends.

We both have the same hobby, that is, sports, running, playing basketball, and when we physical education play basketball, his skill are agile, played ball to outdo each other, basketball ball like dragon flew up in a basket, she was not the kui is the most severe of hoops we girls. After the second class in the afternoon well is running in the playground, but every time I run but she, run the sweat down to his face.

Her helpfulness had let me admire, remember once, the two of us go out to play, there is a kids skateboard fell and fell broken knee, hand also chafed skin, he was crying in pain, Yang Yang saw, in a flurry of calling her parents, and then quickly picked up the paper towels and left a bit of water, pour the water into the paper towels, very carefully with a damp towel gently wipe the blood, his wounded place fed him and comfort him with the water. His parents come, Yang Yang also get full head big sweat, panting. His parents to thank her, but Yang Yang did a modest said: dont mention it, this is what I should do. Is really helpful!

She is my best friend - Yang Yang!

有一人在我伤心的时候总在安慰我，在我快乐的时候我们一起欢笑，在我遇到困难时，总是在帮助我，每次我被难题困住是，她总会出手帮助我,他就是我闺蜜——杨洋

她是我四年级才认识的，她来我们班时，长得高高地，短头发，我以为她是个男生，一看，不是，她穿了一件粉色上衣，男生是不会穿粉色的上衣的。杨洋他就在我后面，我们俩变成了朋友。

我们俩有着同样的爱好，那就是运动，跑步，打篮球，，我们体育课的时候打篮球，他身手敏捷，打球时互不相让，篮球球象飞龙一样飞进筐里，她不愧是我们女生最厉害的投篮高手。上完下午第二节课我们都要在操场是跑步，可是我每次都跑不过她，跑完脸上的汗顺着往下流。

她的乐于助人不得不让我佩服，记得有一次，我们俩出去玩，有一个小朋友玩滑板跌倒了，膝盖跌坏了、手也擦破皮了，疼得他哇哇大叫，杨洋见了，慌慌张张的给她父母打电话，然后又迅速的拿起了纸巾和还剩一点的水，把水倒到纸巾上，很小心的用湿纸巾把他受伤的地方的血迹轻轻地擦掉，然后一边安慰他一边拿水喂他。他的父母来了，杨洋也搞得满头大汗、气喘吁吁。他父母给她道谢，可杨洋却谦虚的说：不用谢，这是我应该做的。真是乐于助人啊!

她就是我的闺蜜-杨洋!

Computers started to become popular with big companies in the 1960s.

Computer

You’ve probably known about computers your whole life. But computers have not really been around for very long. Computers started to become popular with big companies in the 1960s. Computers didn’t become widespread in homes and schools until the 1980s.

HOW DO PEOPLE USE COMPUTERS?

People use computers in many ways. Stores use computers to keep track of products and check you out at the cash register. Banks use computers to send money all over the world.

Computers help teachers keep track of lessons and grades. They help students do research and learn. Computers let you hook up to networks (many computers hooked together). They let you hook up to a worldwide network called the Internet.

Scientists use computers to solve research problems. Engineers use computers to make cars, trucks, and airplanes. Architects use computers to design houses and other buildings. The police use computers to track down criminals. The military uses computers to make and read coded messages.