The material of this pen is exquisite and special. Because this pen is made of crystal. Someone asked, "What, what? Crystal in crystal? Can also be used to make pens? Isn't this ridiculous? " Hey hey! Actually, it's not funny at all. It's just that you are a little surprised that this exquisite pen is carefully processed.
Don't underestimate this pen, it is the most advanced pen, and it has many functions! Hee hee!
This pen is a teacher. Why do you say "teacher"? This is its function! For example, one day, you are reading English, and it is right next to you. If there is anything wrong, it will be recorded, then played back and read to you correctly. If you don't study hard, it will explode!
It can also become bigger or smaller, bigger: as big as a building. Become as small as an ant.
This pen also has a beautiful computer. Very advanced! Don't use it in math class, if you do. It will automatically close for a week. It's really serious. Be careful.
If you get lost in the desert, take it out. It will help you find your way home and find enough water in the desert.
Can also become a ship, although the ship can't cross the sea. But this boat with a new pen can cross the sea without encountering all kinds of dangers.
Therefore, this pen has a nice nickname! Little teacher, tape recorder ...
But this kind of pen has not been produced yet, and I think it will be invented in the future.
I want to invent a little thing and write a composition. Scientists nowadays are too good at inventing interesting things! They keep discovering and inventing.
One of them is a pen. What's so special about pens? Someone will ask this question. I think the person who has this problem must be a curious person. I can answer this question! Although writing with a pen is very simple, it contains many special functions, which are different from other pens. If you want to know, please read my introduction! The material of this pen is exquisite and special.
Because this pen is made of crystal. Someone asked, "What, what? Crystal in crystal? Can also be used to make pens? Isn't this ridiculous? " Hey hey! Actually, it's not funny at all.
It's just that you are a little surprised that this exquisite pen is carefully processed.
Don't underestimate this pen, it is the most advanced pen, and it has many functions! Hee hee! This pen is a teacher. Why do you say "teacher"? This is its function! For example, one day, you are reading English, and it is right next to you. If there is anything wrong, it will be recorded, then played back and read to you correctly.
If you don't study hard, it will explode! It can also become bigger or smaller, bigger: as big as a building. Become as small as an ant.
This pen also has a beautiful computer. Very advanced! Don't use it in math class, if you do.
It will automatically close for a week. It's really serious. Be careful. If you get lost in the desert, take it out. It will help you find your way home and find enough water in the desert.
Can also become a ship, although the ship can't cross the sea. But this boat with a new pen can cross the sea without encountering all kinds of dangers.
Therefore, this pen has a nice nickname! Little teacher, tape recorder ... but this pen has not been produced yet. I think I will invent this pen in the future.
3. Composition Inventing a thing Science is getting more and more developed and doors are getting more and more advanced, but there are still many shortcomings in the current security door, so I want to design a unique security door to benefit the people.
The shape of the security door I designed is the same as that of the robot. The robot's eyes are the "cat's eyes" we used to look at people at the front door, and the robot's hands are the handles of the front door. He uses a fingerprint smart board. The robot's mouth is used to talk to the outside world, and there is a microcomputer in it to control the smart board. People who are tired from work will be very happy when they get home and stand in front of their homes. The first thing they saw was the cute appearance of the robot.
The interior of the security door I designed is controlled by high-tech passwords. The head of the machine, like the mainframe of the computer, controls the whole robot body. The fingerprint input by the smart board and the memory of the microcomputer are controlled by his head. When the master comes back, first of all, the robot's eyes will bend and its mouth will smile and say "hello!" " Three times. When the owner presses the smart board with his thumb, the microcomputer will make a judgment immediately. Open the door in one second. If a thief comes, presses his fingerprint, and the microcomputer finds that something is wrong, the door will open hard, bump the thief into the corner, and then recover within one second.
I designed the security door and information system. When the host is not at home and a guest visits, if the guest wants to leave a message, he can dial the phone number of the host on the robot foot, and a smart board will appear inside, so that the guest can write what he wants to say and restore to the original state. When the master comes back, as long as he presses his fingerprint, the robot's mouth will tell the master the content of the message. If the guest and the host want to buy something and leave, and the guest has something urgent to go out, the guest can come out by pressing the nose of the robot.
Write a composition about what I invented. I want to invent many things, such as a house that can withstand disasters, a sports car that won't break down, and a trash can that automatically collects garbage.
The first thing to be invented is a house that can withstand disasters. House? Although it is very common, its use is actually much better than you think! The house I invented will use special strong materials to resist many natural disasters, such as earthquakes, tornadoes and tsunamis ... The second thing I want to invent is sports cars. This sports car is great! As long as you press the red button, the tires of the sports car will disappear and become a ship; Press the green button, a pair of flying wings will slowly stretch out on both sides of the ship and become an airplane; Press the yellow button again and the plane will become a sports car again.
Most importantly, this sports car is 100 million times harder than ordinary sports cars. Even if tens of millions of tons of things hit the sports car, the sports car will not be damaged. Maybe you will think that such flowers must consume a lot of oil. On the contrary, this sports car uses solar energy and wind energy to generate electricity, which is not only energy-saving but also very environmentally friendly. Such a multi-functional sports car can also prevent theft and can only be started by the owner's fingerprint.
The next thing I want to invent is the trash can. You will feel strange when you hear this name. What is there to invent in the trash can? Every household has it. But this trash can is unusual. It can sense the garbage within 50 cm from it, reach out and pick it up and put it in its stomach.
I also want to invent a pair of chopsticks. Don't think that these are the chopsticks we usually use, and they can only be simply used to hold vegetables. The chopsticks I invented have indicator lights on them. When chopsticks come into contact with toxic food, they will light a red light to remind people not to eat.
If you encounter fried or fast food junk food, it will light up a yellow light to remind people to eat less. If it is green food, it will turn green, indicating that the food is nutritious and can be eaten more.
I also want to invent an alarm clock that can hit people. Don't underestimate this little alarm clock. At a fixed time, if you are still in bed, the small alarm clock will extend a small antenna, which will gradually get bigger and start hitting you until you get up. Finally, I want to invent this thing, I believe everyone wants it very much, because it is a clothes that can prevent thieves. How's it going? Do you think it is incredible? If you meet a thief on the bus, put your hand in your pocket. This dress can not only help you move the things in your pocket to another place, but also give an alarm to scare the thief away.
When it is safe, things will go back to their original pockets. Isn't it amazing? These are all my inventions, not bad, right? I think they will come true one day.
5. Write a composition about inventing a daily necessities. In 400 words, a low-carbon life is to reduce energy consumption in daily life, thus reducing carbon, especially carbon dioxide emissions.
Low-carbon life, for ordinary people, is an attitude, not an ability. We should actively advocate and practice a "low-carbon" life, pay attention to saving electricity, oil, water and solar terms, and start from scratch. Usually, you can use your hands and brains to make the old things look brand new, and you can also achieve "low carbon".
There are many discarded boxes in ordinary families, such as soap boxes, toothpaste boxes and milk boxes. In fact, as long as they are cut slightly, they can be used conveniently, such as making a storage box, in which items such as tea bags and cosmetics can be placed; You can also make a beautiful desk lamp with instant noodle boxes, cans and yogurt bottles. Dried tea dregs, dried in the sun to make tea pillows, are comfortable and can improve sleep ... When you go out, if the road is not very long, you can walk instead of taking a car. This not only exercises the body, but also reduces the emission of carbon dioxide, which has many benefits.
At home, I planted several potted flowers with my parents, which not only improved the air, but also made the home full of spring and evergreen all the year round. My family has a big wooden barrel, which can not only hold the clothes to be washed, but also store the water for washing our feet, which can be used to mop the floor and flush the toilet.
A month later, I found that I saved a lot of water! If you don't use the computer for a short time, please put it in sleep mode. If you don't use the computer for a long time, turn it off.
This will save electricity and maintain your computer. When you go home, you don't need to light all the lights. Turn on the light in any room and turn off the light after leaving the room.
Using less paper towels instead of handkerchiefs is equivalent to protecting half of the forests that should have been cut down. Use disposable chopsticks as little as possible, and bring a set of tableware when going out to eat, which is hygienic and not wasteful.
Cleaning the air conditioner regularly is not only for health, but also for saving electricity. If the traffic jam lasts too long, put out the fire first and wait until the team starts to move before firing! Considering the contribution of public transportation to the world environment, it can at least offset some of the superiority brought by driving a private car.
Waste batteries can't be put in the dustbin with other rubbish. They should be put in the "waste battery bin" specially. Scientific thrift is a fine tradition; After the leftovers are cooled, wrap them with plastic wrap and send them to the refrigerator; Hot steam not only increases the work of the refrigerator, but also frosts and wastes electricity.
When buying clothes, you'd better buy cotton, linen and silk clothes, which are not only environmentally friendly, but also durable and generous. Wash the same car with the water in the bucket, only one-eighth of the water washed with the tap.
Let's start from the dribs and drabs around us and contribute to a low-carbon life. With the development of world industrial economy, the rapid increase of population, the unlimited rise of human desire and the uncontrolled production and lifestyle, the world climate is facing more and more serious problems, carbon dioxide emissions are increasing, the ozone layer of the earth is suffering from an unprecedented crisis, and global catastrophic climate changes appear frequently, which has seriously endangered the living environment and health and safety of human beings. Let's sum up low-carbon tips and don't let the climate endanger our lives. /10 2009 June 2009 1 1 Cabinet officials, including the Maldivian President and Vice President, wore black diving suits, scuba gear and waterproof masks to dive into the water 6 meters deep for a meeting.
During the meeting, they wrote the "distress signal" sent by Maldives on a white plastic board with a waterproof pen: "We must unite as if preparing for a world war to prevent the temperature from rising. Climate change is happening, threatening the rights and safety of everyone on the planet. " 80% of the Maldives islands are coral reefs, with low terrain and an average elevation of less than 1 m.
In 2007, the United Nations Intergovernmental Panel on Climate Change warned that by 2 100, the global sea level may rise by 0. 18 m to 0.59 m, and then the Maldives will become an uninhabitable place. In fact, low-carbon life is close to everyone. As long as we pay more attention to some details in life, we can reduce energy consumption.
Some low-carbon tips in my life are aimed at saving water. It takes a lot of energy to produce tap water and treat sewage.
Therefore, saving water means saving energy. Putting a big coca-cola bottle in the water tank of the toilet can reduce the amount of water discharged each time and save water. The water for washing face can be used to wash feet, the water for washing clothes can be used to rinse rags and wipe floors, and then these wastewater can be used to flush toilets; The water after washing vegetables can be used to water the flowers.
Don't underestimate the reuse of these waters. Accumulated, only a family of three can save more than one ton of water every month. In addition, if you wash clothes by hand once a month, then each washing machine can save electricity, which can also save coal for power generation and reduce carbon dioxide emissions. If all families in the country can wash their clothes by hand once a month, the carbon dioxide emission reduction can reach 684 thousand tons, which is amazing.
At the same time, although the washing machine is easy to use, washing three or two clothes with the washing machine will also cause unnecessary waste. So, are there any other good ways to reduce consumption and low carbon for our primary school students? Let's take a look at my suggestion.
Double-sided use of paper saves paper; Do not use disposable chopsticks and disposable lunch boxes; Do not use disposable plastic bags; Reduce food waste; Turn off the lights, take care of the tap, and so on. Use more electricity and less gas.
Electric energy is environmentally friendly, and it can be generated by wind energy, hydropower, nuclear energy and solar energy. Even coal-fired power plants use coal intensively, with high combustion utilization rate, which is much more economical than using it alone.
As long as we take the daily behavior in our daily life as an example and replace everything that directly consumes gas with electricity, it is a low-carbon standard. There are many such examples, such as cooking with electric cookers is lower than using gas, and lighting with lamps is lower than using gas lamps.
Usually, you can use your hands and brains to make the old things look brand new, and you can also achieve "low carbon". There are many discarded boxes in ordinary families, such as soap boxes, toothpaste boxes and milk boxes. In fact, as long as they are cut slightly, they can be used conveniently, such as making a storage box, in which items such as tea bags and cosmetics can be placed; You can also make a beautiful desk lamp with instant noodle boxes, cans and yogurt bottles. Dry tea dregs are used as tea pillows.
6. A short essay imagining what you invented, be sure to write why it takes 400 words to invent this thing. I want to invent a miniature house most. Because there are many lonely people in our life, when they have to go out for a long time, they can't let go. A miniature house will solve this problem for you. This miniature house is a model house. It is very small, only a quarter as big as the palm of your hand. This is very simple to use and takes up little space. You don't have to worry about it missing, because if you accidentally lose it, it will make an abnormal fluctuation, and only the owner of that small house will hear and see it. If someone picks it up and wants to keep it for himself, don't be afraid, because only your own remote control can open the miniature house. Other remote controls cannot be turned on. I hope this kind of room can bring convenience to everyone. There is a remote control in the miniature contraction room. There are seven buttons on the remote control, and the colors of the buttons are different: red, yellow, blue, green, blue, red and purple. These seven keys are: absorbing carbon dioxide, turning on lights, turning off lights, keeping warm, cooling down, networking and shielding. People can. If an explorer climbs the cliff, how can the house settle down? What if an area is very hot or cold? How can I surf the Internet without a network cable? What if the beast appears in Shan Ye? Don't be afraid of these questions. Because you have a mysterious remote control, you can save energy by pressing the red button on the remote control. The main energy in the house is carbon dioxide, so you don't have to waste energy. As long as you press King Wong, the lights will turn on automatically, but the lights in other places will not turn on except your room. As long as you press the blue button, the light will go out. As long as you press the green button, the house will close. This way, you don't have to suffer from severe cold when you go out in winter. As long as you press the green button, the house will become very cool, so you don't have to face the summer heat. As long as you press the red button, the computer will automatically connect with the telecom. As long as you press the purple button, there will be a transparent protective cover next to your home to protect you from wild animals. Although this is just an idea, one day, I tried to invent the miniature house II. Look at my little invention. Everyone has lofty ideals, and if you want to realize them, you must start from a small age and start from small things. In order to realize my dream, I began to use my brain and make small inventions first ... Today, when I was watching TV, I saw some decorative ornaments made by people on TV and thought: Can I compare with them? Sure！ I can do it well! At this time, I began to prepare materials. I searched and searched for a long time, and turned the house upside down, only finding a piece of white yarn and some colored threads. Having prepared the tools, I began to make decorations. First of all, I folded the gauze in half, sewed the other three sides with a needle, found a piece of paper as big as the gauze, and put the paper into the gauze after using colored strokes. Then I drew a beautiful picture on the other side of the gauze with a colored pen. Then I sprayed perfume on it. Finally, I tied the numbered one to the gauze and hung a bell at the bottom. In this way, a sachet is ready. Look! This is my little invention! Does it look nice? Whenever I go to school and leave school, I always look at the wind chime, a small invention I made in the window in the summer vacation of my fourth grade. It was the summer vacation of my fourth grade, and I had finished a lot of homework. Just doing this homework makes me nervous. Once, I accidentally saw a box of expired "Sanjing Brand Blue Bottle Oral Liquid" in the living room. I went over curiously and opened it. It was full. I only drank one bottle. I looked at these delicious oral liquids and wanted to drink them, but they were all expired. It's a pity to throw them away. What should I do? I had a brainwave: "I can dump the expired oral liquid in the bottle and collect the bottles outside to make a beautiful wind chime!" " "Let's get started. I first took the bottle out of the box, stabbed a small hole in the bottle with scissors, and then put the bottle down to let the oral liquid flow out bit by bit. I'll put the bottle on the table after all the oral liquid is poured out. I will find out some cardboard and double-sided tape that I haven't used up in art class before, and find out tools such as wool and scissors. After everything was ready, I began to make it officially. Many bells I have seen in the store flashed through my mind, but I don't know what to do. Looking for a lot of art books, I finally found the "underwater world" chime in the art books of grade three. My mother and I discussed it for a long time and decided to do it. I cut it into a circle with blue cardboard first, and then cut an acute angle on the circle. Then stick the two sides of the corner just cut off with double-sided tape, and it becomes a funnel shape. Next, we will make pendants. Pendants are all kinds of underwater creatures. I drew a big crab on red cardboard, holding big and powerful feet and bulging eyes. It looks so imposing! I cut it carefully with scissors. Then I cut a big, fat carp and a small turtle with a thick shell ... Then I prepared some wool of different colors and lengths and put one on each creature's back. Secondly, I hung a bottle under each creature. This confuses me. How can I hang the bottle firmly on it? It's not nice to put it directly on the bottle mouth, and the bottle is glass, so you can't make a small hole. What should I do? I looked at the bottle in a daze. Suddenly, my eyes fell on the toothpick on the table. I had a brainwave and came up with a good idea. I divided the toothpick into two sections, picked up one section, tied it in the middle with wool, put the toothpick into the bottle mouth obliquely, and lifted the wool. The bottle hangs steadily. I hang all the bottles in the same way. Finally, all the wool connecting the creature and the bottle passed through the center of the funnel. Twisted into a strand, this beautiful wind chime is made. I showed it to my mother, and my mother liked it very much. She praised my good work and hung it in the living room with me. Every time I go to the living room, I look at my wind chimes. Every time the wind blows, my wind chimes will sing "Ding-dong, Ding-dong" and flutter with the wind.
7. Composition Invents a Thing 137 What do I want to invent? Do you know what I want to invent? It must be unexpected, just a car that will change. Didn't you think of it? I imagine this kind of car will become an ordinary car without exhaust gas. This car has four fantastic buttons, one is excellent red composition, which allows you to drive safely on land; One is green, which makes you fly in traffic jams; One is blue, allowing you to swim in the water; The last one is white, it can make the car shrink to fit in your pocket, and then you can wave it again, and the car can become bigger. In addition to the wonderful buttons, the car that will change has a silent horn. When you press this horn, there is no sound. You may think: How can you remind others without sound? Tell you what! In fact, this kind of horn will vibrate. If this vibration vibrates, the person in front can drive. This kind of car is not only pollution-free, but also environmentally friendly! This car has no exhaust gas. At the place where the exhaust gas was first injected, a gas was emitted. This gas is called the environmental zone. Why is it called environmental belt? Because this gas protects the environment, it is a "belt" to protect the environment, so it is called environmental belt. Isn't the ever-changing car god I'm going to invent amazing? What do you want to invent? Expand your imagination and write a composition about what you want to invent.
8. Composition Invents a Thing 137 What do I want to invent? Do you know what I want to invent? It must be unexpected, just a car that will change. Didn't you think of it? I imagine this kind of car will become an ordinary car without exhaust gas. This car has four fantastic buttons, one is excellent red composition, which allows you to drive safely on land; One is green, which makes you fly in traffic jams; One is blue, allowing you to swim in the water; The last one is white, it can make the car shrink to fit in your pocket, and then you can wave it again, and the car can become bigger. In addition to the wonderful buttons, the car that will change has a silent horn. When you press this horn, there is no sound. You may think: How can you remind others without sound? Tell you what! In fact, this kind of horn will vibrate. If this vibration vibrates, the person in front can drive. This kind of car is not only pollution-free, but also environmentally friendly! This car has no exhaust gas. At the place where the exhaust gas was first injected, a gas was emitted. This gas is called the environmental zone. Why is it called environmental belt? Because this gas protects the environment, it is a "belt" to protect the environment, so it is called environmental belt. Isn't the ever-changing car god I'm going to invent amazing? What do you want to invent? Expand your imagination and write a composition about what you want to invent.
9. Invent something and praise my little invention-(magic insole)
Every time I visit relatives during the Spring Festival, my mother is always extremely worried. Because there are too many people coming, wearing slippers is too troublesome; * * *, put on your shoes and come in. It's too dirty, and cleaning is too much trouble. The family has a headache for this. Look! There will be another guest tomorrow! What should I do? Mom and dad are talking again.
Mother said, "Alas! So many guests, how many slippers! " Dad said, "Send the shoe covers!" " "A lot of people stood there waiting for shoe covers. How embarrassing! " Mom said at once.
After listening to my parents' words, I fell into deep thought: if only there was something that was not as troublesome as shoe covers and could separate the dirty soles. So, the first invention of my life began.
First, I took two pieces of plastic paper for electrical appliances, cut two insoles the size of 36-yard shoes, and then stuck two pieces of double-sided tape on the upper and lower arcs. Uncover the smooth sticker on it and a pair of dirty insoles will be done.
I pulled my mother over, put her on shoes for going out, and then stepped on my insole. "Mom, take a few steps." I ordered. Mom took a few steps slowly, and the front was stuck. What about the back? Because it is a high-heeled shoe, the heel is very small, and the back of my mother's heel is not bonded with adhesive, so it is inconvenient to walk, and it is easy to fall off and not strong enough.
Hey! I see. I picked up the double-sided tape and pasted the back part. When my mother put it on again, it got stuck. My mother walks around the house in my insole, feeling comfortable and strong.
"I succeeded!" I am dancing happily in the living room. Mom and dad finally began to frown, revealing a long-lost smile. Our family started construction, and in a short time, 30 pairs of insoles were ready.
Dad touched my head and smiled and said, "My daughter is really capable. This insole is not only convenient, but also simple to make and environmentally friendly. Well, it really helped me a lot! "
10. One thing invented by primary school composition scientists 300 words Scientists have established a new discipline-bionics by carefully observing many miracles in nature and animal kingdom. Bionics is an independent frontier science which combines zoology, physics, chemistry, psychology and engineering technology. It simulates the function of animals to improve existing ones and create brand-new machinery, building structures and new materials. The research of instruments and technology has created many advanced technologies suitable for production, study and people's lives. The appearance of aircraft undoubtedly comes from people's direct imitation of birds and birds. The realization of many functions of modern aircraft, such as vertical take-off and landing, hovering in the air and turning around, is also deeply inspired by birds and mosquitoes. Ships and submarines come from people imitating fish and dolphins. Biologists have made advanced silk thread through the study of spider silk, which can resist tearing and breaking of parachutes and high-strength cables for temporary suspension bridges.