Writing a composition from the perspective of a mask

1. The appearance of the mask is composed of 200 words "plop, plop, plop". Hey, what's up? It turned out that a child put the fish in the fish tank. The fish met several compatriots in the fish tank. They looked at their partners and gave each other names: red tail, yellow head and green scales.

One day, the owner gave them to others for a period of time. They have a good life in the new owner's house. Put fish food, aquatic plants and Ceratophyllum in a fish tank. The ingenious new owner also made a beautiful and practical fish house and feeder for each fish ... they live better and better. composition

One day, however, the master went out and had to wait a week to come back. Although the time is not long, it is a great challenge for fish. The water has become turbid, which is almost 108 thousand miles worse than the original clear water. The fish in the feeder also have no food, and the fish live in a state of life is worse than death.

Finally, one day, Red Tail couldn't stand it anymore and said to everyone, "Life is really bad now." Huang tou agreed: "I agree with you very much, but what should I do?" At this moment, Green Scale took out a mask from the room and said, "I saw this thing from its owner and made it out of aquatic plants according to its appearance. It feels much more comfortable in your mouth. Let's make a few more and put them on our mouths. " So they made a few more and put them in their mouths, waiting for their master to come back.

On the first day, they spent the day by willpower.

The next day, they felt a little sick. All the fish passed out safely except the yellow head.

On the third day, although the fish persisted by willpower, it still fainted.

On the fourth day, the master finally came back. When he saw the fish, he quickly changed water for them to feed them. When they woke up and took off their masks, they found that there was fish food to eat again, and the surrounding water became clear. They shouted happily to their partners: "Look, persistence is victory!" " "

Yes, persistence is victory. With persistence, failure is not easy, and without persistence, success is even more difficult. Let's learn to persist!

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There is a small river in the village. The river is crystal clear, and small fish are playing happily in it.

But now, the river can't see the bottom, the air stinks, and small fish have to wear umbrellas and masks every day. Why?

It turned out that a factory was built by the river, and people discharged sewage into the river, and the river became very turbid. People in the factory also come to the river to take out the garbage every day, including bottles, old wheels, banana skins, watermelon skins and smelly shoes.

Many small fish got sick and were sent to the hospital. It turns out that this river is polluted. Many small fish were injured by garbage and were admitted to the hospital.

In order to prevent this from happening again, the fish village chief gave each small fish an umbrella and a mask, and told them to bring them every day.

A small fish wearing an umbrella and a mask was seen by a pupil. He took photos and uploaded them to the Internet. This news caused great concern on the Internet. The county magistrate also saw the news. After investigation, he knew that the culprit of letting small fish wear umbrellas and masks was the new factory and asked them to correct it immediately.

Finally, the river became as clear as before. The little fish began to play again.

3. Write an 800-word composition entitled "Mask and Smile"

Lu Xun said: there is no mask in the world, but more people wear it and it becomes a mask.

Humans are changing, so are masks: from narrow and short to wide and long; From tangible to intangible.

? Different people have different masks.

? How many stories about masks have touched our hearts?

? Please write a composition of not less than 800 words with the word "mask" as the topic. In addition to poetry, style is optional.

A selection of candidates:

surgical mask

? I stood in front of the SARS store in Xidan Commercial Street, waiting for my mother.

? There are many people in the street on Sunday, and all kinds of masks float in front of my eyes, just like neon in my dream.

? It's almost eleven o'clock. My mother hasn't come yet. I decided to go to the store first. Because this is the only SARS chain store in Beijing, there are many people, and there is a long queue in front of the fitting room.

? "Welcome to SARS, please have a look! Mother's Day is a great gift! " The clerk's shouts bordered on hysteria.

? There are all kinds of masks in the shop, such as lovers' masks, family masks, petty bourgeoisie masks, cynical masks, casual masks, formal masks, etc., which are dazzling.

? The phone is ringing. It's my mother.

? "I'm not going, buy it yourself." Mother said on the other end of the phone.

? I habitually adjusted my mask and said, "What's the matter? Didn't we agree? " I'm a little disappointed.

? "I'm not feeling well now. Let's talk about it another day. You don't have that many masks How can you buy them? " Mother asked a little doubtfully.

? "I didn't agree, but I changed my mind halfway!" I'm a little angry.

? "Good boy, it's all my mother's fault ..." Before my mother finished, I turned off my cell phone.

? I'm starting to get angry, but being angry means being angry. I still have to buy a mask.

? I thought I would wait for my mother to come and let her choose a favorite style, but now it seems that this hope is dashed.

? When a beautiful SARS lady smiled and asked me what size I wanted, I remembered that I didn't know my mother's size at all.

I wanted to call and ask, but I thought it would make my mother sad, so I decided to make up my mind.

? I know my mother likes simplicity and elegance, but she doesn't like being too ostentatious. Having chosen it, I decided to give it a try.

? People who line up in front of the fitting room know at a glance that most of them are children who accompany their mothers. Suddenly, I felt very lonely.

? It's finally my turn.

? I closed the door of the fitting room, took off my mask, hung it on the wall, put on a present for my mother, and looked in the mirror. I couldn't help admiring my eyes.

? Suddenly, I found a colorful piece of paper on the wall on the right, which read: The child is thinking of you! Very happy, isn't it?

? A warm current welled up in my heart. Although I was a child, I was not ready to be a mother.

? I can't help but be moved by the care of SARS shop.

? Take it home. Mom is cooking in the kitchen.

? "Mom, for you! SARS! " When I handed the wrapped gift to my mother, I clearly saw that her face was full of happiness.

? "Why don't you feel well?" I don't see what's wrong with my mother.

? Unexpectedly, my mother's face suddenly turned red. She went to her room, took out a mask and said, "What do you think?"

? "Oh, that's great. Where did you buy it? " I have to admire my mother's eyes.

? "I made it myself and gave it to your grandmother. She doesn't like to buy it outside. "

? Mother's answer is very dull.

? This day is Mother's Day.

4. How did the whole class write a composition with a mask? Looking at the beautiful scenery outside the window, I arrived at my hometown unconsciously. After arriving home, after a while, we went to Zaolin again. In the jujube forest, the first thing you see is rows of golden jujube trees. There are so many jujube trees here that you can't see the end at a glance. Every tree bears dates, bending the branches. Jujube hangs on the branches like red agate. I couldn't resist the temptation of delicious food, so I quickly picked a big red jujube and ate it with relish. Take a bite, crisp, sweet and slightly sour, which makes people want to eat more and more, and the more they eat, the more they love to eat. So, I picked some dates and ate them slowly in my hand.

/kloc-you can have dates and dried dates in October. The dried jujube looks like a carpet from a distance. Soft, red and spectacular. When the jujube is half dry, you can see the golden thread shining between the pulp when you break it with your hand. No wonder it's called "golden jujube" Eat semi-dried golden jujube, which is sweet and contains many vitamins. Golden jujube is really full of treasures!

Then, we came to the winter jujube forest. Most of these winter dates are not ripe yet, but some of them have turned red. I picked a winter jujube and tasted it. I found that winter jujube is sweeter than small jujube, and it is thin and juicy and falls to the ground.

5. Why should I wear a mask? Why do I have to wear a mask in the first two classes? We have shown you how to choose the mask body and filter material. Then, if these two points are done correctly, can we avoid the influence of pollutants and really play the role of masks effectively? Actually, it is not.

Below, we will introduce several factors that affect the efficacy of masks and let everyone know the importance of wearing masks in polluted environments. Generally speaking, it depends on four factors, three of which are aimed at the mask itself. They are: 1. Efficiency and respiratory resistance of filter materials. 2. The tightness of masks with different faces. 3. The protective coefficient is used to evaluate the effectiveness of the mask in protecting workers' respiratory system.

For example, the number of designated protective systems and masks we introduced to you in the last issue. However, a mask with good design, good fit and good performance will play a vital role in enhancing or weakening its efficacy, that is, the fourth factor, wearing time.

Before talking about its importance, we should know the following questions. 1. What is the purpose of protecting the respiratory system? You should know that no type of mask has a "zero exposure" protection level that allows users to completely and completely get rid of injuries.

The main purpose of wearing a mask is to reduce the concentration of harmful substances inhaled by workers, so as to reach an acceptable concentration level that is harmless to the body. For this acceptable concentration level, we take the allowable exposure value (PEL) of various harmful substances as an example.

PEL value refers to the concentration level of pollutants when workers are exposed to air pollutants without adversely affecting their health. In addition, the threshold value (TLVS) issued by the American Association of Industrial Hygienists has the same meaning.

2. When we should wear masks, what is the way for pollutants to enter the human body? Only by understanding this can we understand the concept of wear coefficient. When we wear masks, pollutants enter the human body in four ways.

(1) Insufficient filtering. If the filter material, including dust-proof cotton filter or chemical filter box, is selected correctly and replaced in time when it fails, this need not be considered.

(2) Improper facial closure. The tightness between the mask body and the face can be tested by quantitative or qualitative methods and testing means. If any test proves that satisfactory sealing can be achieved, this can be ignored.

(3) Improper maintenance. In the process of cleaning or installation, if the operation is improper or the parts are not replaced in time, the parts such as the mask body or the exhalation valve will be damaged, thus destroying the overall sealing performance of the mask and reducing the efficacy of the mask.

(4) Don't wear a mask. Then, even for a short time, harmful substances will be directly inhaled into the lungs.

For the last point, that is, the time of not wearing masks is related to the workers' acceptance and cooperation with masks, which helps us to introduce the concept of wear factor. Wearing coefficient refers to the percentage of working time that workers wear masks when they are exposed to pollutants (that is, when they should wear masks).

To sum up, there are four possible ways for the above harmful substances to enter the human body. The following examples illustrate the adverse effects of not wearing a mask on users. Example 1. We assume the following conditions: a. The pollutant concentration level is 10 times PEL value; B 10% of the time did not wear a mask, that is, the wearing coefficient was 90%; C The sealing coefficient of the mask is 100, that is, for every 100 unit of pollutants after wearing the mask, 1 unit will enter the mask due to sealing problems.

(This number is determined by the qualitative fit test of half-face mask. For example, the minimum fitting coefficient of a half-face mask is 100 as measured by the FT-l0 setting fit tester of 3M company. We calculated that when workers were exposed to harmful substances with PEL concentration of 10% of the time and were effectively protected by masks for 90% of the time, their combined effect was that the total exposure of workers was still greater than the allowable exposure concentration value PEL, indicating that workers were not effectively protected.

Table 1. 90% of inhaled pollutant concentration when not wearing. Exposure of wearing factor10% *10pel =1.00 times that when wearing, pel90% *10prl÷100 (ff) = 0. The calculation results are shown in Table 2.

This shows that by increasing the wearing time by 5%, the exposure level has been reduced by nearly half, which has been within the allowable exposure concentration (PEL), and the workers have been well protected. Table 2. 95% wearing coefficient, the concentration exposure of pollutants inhaled is 5% * 10PEL = 0.5 times when not wearing, and 90% *10prl ÷100 (ff) = 0.095 times when wearing. Comparing these two examples, the overall exposure of XPEL is 0.595 times.

It can be concluded that although a good mask can help our workers to carry out effective protection when wearing masks, the overall protection effect on workers may be greatly reduced because workers do not wear masks for a short time in a polluted environment. Since it is very necessary for workers to insist on wearing masks during working hours, how to do this? Of course, as managers, stricter disciplinary measures will be formulated to force workers to wear more clothes during working hours, but this may have a negative impact on workers' morale and productivity, and it is thankless.

A more effective way is to strengthen training to let workers know the dangers of not wearing masks, which will help them consciously insist on wearing masks throughout the work process. In addition, by providing high-quality masks that are light, easy to breathe and communicate freely, workers may be more receptive and willing to wear them, thus truly protecting their health, which is a great wealth for the survival and development of an enterprise.

The continuous haze of more than 6.400 words has brought a lot of troubles to our lives. When listening to the radio in the morning, experts suggest that it is best to wear a mask when going out to prevent smog from entering the human body.

When I was a child, my mother often made me wear a mask because I was weak and allergic. Now that I have grown up and my body is getting better and better, those masks have been "ignored". But my mother still found some masks in the medicine cabinet, but she found them too small after a try. So my mother decided to take me to buy a mask. Finally, I chose a brown mask with a simple pattern and liked it very much.

But that night, my sister who lives in Gan Yuan was informed that she would take part in the school competition the next day, so she stayed at my house for the time being. My mother asked my sister if she had a mask with concern. My sister said she left in a hurry without it. So my mother casually gave my mask to my sister. I'm a little angry. My sister went to the room to read a book, so I said to my mother, "Give me back my mask." Mom said, "Button reading is a moral star. You should be generous and give it to your sister. Anyway, you will rest at home tomorrow and don't have to wear a mask. " At this time, my tears were about to fall. I said to my mother loudly, "If you want to give someone away, you must go through my consent!" " The cat barks ... "At this time, my father also went home, and he also supported my mother's practice. He also said that I don't have many masks, so I will put them on tomorrow and buy a new one. I am speechless!

Now, my mother bought me a very beautiful bamboo charcoal mask. Even so, I still want to say to my parents, "Your son has grown up. Please consult me before you make a decision, okay?"

7. Look at the green composition of environmental protection, and look at the vivid color from the perspective of garbage bags; Green, the color of environmental protection. With green, there is fresh air; With green, there will be fragrant flowers; With green, there is a healthy life; With green, there will be a beautiful campus. As the masters of the 2 1 century, we should earnestly establish a sense of responsibility for the times, look around the world, focus on the campus: "Don't do small good, don't do small evil", start from me, start from small things, start from now, and start from caring for the campus environment; A piece of paper, we pick it up; A drop of water, we save; A pile of garbage, we clean; A flower, we cherish; A grass, we love it. We should protect the environment with our own practical actions, cultivate our green consciousness, and let green life inspire us to love life and study. For the sake of "green" campus, let's take action, make our own contribution to cherish, cherish and create green, be pioneers of the times and be environmental protection guards. "The real test of our contribution to the environment is not words, but actions." Although what I am doing now is only a small thing, I firmly believe that if we all have the responsibility to protect the environment, start from ourselves, start from small things, and work together to protect our homeland, we will naturally give humanity the due return. Take a nap in the warm cradle-grassland; Growing up with a kind smile in the sky, bathing in the river, the source of love, once upon a time, people hacked and hacked, destroying the ecological balance of nature. Dunes have swallowed up thousands of hectares of fertile land, floods have destroyed lovely homes, and nature's revenge has embarrassed mankind. Meishuixi once said that there would be no human beings without nature, which is the simplest truth in the world. Blindly plundering and conquering nature will only destroy the ecosystem and bring mankind to the brink of difficulties. This sentence is absolutely true. People don't give face to nature, and nature certainly won't give people a way back. In fact, the flood in 1998 and the sandstorm in 2000 were both warnings issued by nature to human beings. Give me back the green mountains and green waters. As every ordinary person in real life, although it is impossible for all of us to directly engage in environmental protection work, we can start from small things and start from me. When you see the faucet dripping in the bathroom, can you raise your hand and turn it off? The battery is used up, can it be collected separately instead of thrown away? Can you consciously not use ultra-thin plastic bags when shopping? ..... Although every little thing is insignificant, it shows how much we are aware of environmental protection. As long as we start from ourselves and start from small things, we will work together and persevere, which will definitely leave a clear water and blue sky for the society and ourselves. "I want to have a home, I want to have a home, I want to have a home ... go home! Where is it? " This is what a pair of poor homeless birds said in an animated film broadcast by Zengcheng TV's "Public Welfare" column. This sentence made me deep in thought: it is everyone's responsibility to protect the environment! The environment is a precious wealth given to us by nature, and we should cherish them. Plants are the natural barriers of nature; Animals are friends of human beings; The ozone layer is the umbrella of the earth; Fresh water is the source of our life. However, people always talk about environmental protection without taking protective actions. People should know that environmental protection is very important in practice! A tree can absorb a lot of carbon dioxide and other harmful gases every day, releasing the amount of oxygen equivalent to the amount that a factory worker breathes every day. Flowers and plants can absorb noise. If you plant a flower lawn, you can greatly reduce noise pollution. This shows the importance of plants to human beings. But some people don't know this yet. Whenever I see the lawn trampled by those people and the placard that loves flowers and plants that has been kicked down, my heart is like a knife cut, which is very uncomfortable. If I lose flowers and trees, I can't imagine what the world would be like! In the third grade, I learned the text "A Small Village", which is about a beautiful small village. Because people cut down trees excessively, the land was destroyed and the village was washed away by the flood. What a terrible thing it is! Will this happen again in our city? Animals are friends of human beings and wealth of society, so we should cherish them. I know from Lingnan Youth Daily and Modern Pupils Daily that the American cheetah has long since died. The fierce horse elephant has died in the glacier; Saber-toothed tigers have long been extinct; European Thunderbirds are on the verge of extinction; Whales are dying; African elephants are forced to be endangered. From now on, start from me, eat less wild animals and stop hunters from killing animals. I remember that SARS spread in 2003 because people ate civet cats and the coronavirus mutated. I got the ozone layer from the internet, which is called the umbrella of the earth, because it can block most ultraviolet rays. Without the ozone layer, the earth would be burnt in an instant. Because people use a lot of chemicals, a big hole has appeared over the South Pole. Fresh water is also precious. According to TV news reports, 70% of the water in the world belongs to salt water and cannot be drunk. According to statistics, one in three people will be short of water, not to mention the salt water converter has not been invented. The sound of running water must be that someone didn't tighten the tap. Saving water is just lip service. No one remembers those unconscious people washing their hands without turning off the tap, so the fresh water ran away in vain. In short, environmental protection can no longer be empty talk, but should focus on practical actions. Everyone should use our hands to protect our beautiful and fragile earth. I hope those who have no action will bend down and pick up the paper on the ground, so that our tomorrow will be more beautiful and tidy! What color is nature? Green? Red? Yellow? Purple? ..... No, nature is colorful.

8. How to write that Wu wears a mask in class and wears a mask in class next time. "said the teacher.

Why do you wear a mask to class? I'm not sick. It's not winter and it's not cold. Why am I wearing a mask? I think. It took me several days to realize that what the teacher said was to get rid of my habit of talking nonsense in class. Recently, my mouth doesn't listen to me, and I always talk nonsense in class, either to the left or to the right, or to twist my head to the back table, which is endless and disturbs classroom discipline. The teacher was very angry and told me so, even moved me to the back row to sit alone. The teacher is really good. It only takes one sentence to remind me to control my restless mouth. Be careful in the future, I don't want to wear a mask to class.