If I were a scientist, write a composition (800 words)

Everyone has his favorite occupation. Some people want to be teachers, some want to be doctors, and some want to be astronauts. I want to be a scientist.

If I were a scientist, I would invent a car that can be used by water, land and air. Water represents a car in the water. You will ask: How can a car run in the water? Let me tell you something! If it is surrounded by water, an oxygen cylinder will appear in front of you, and four tires will become four propellers. Land represents land. Empty represents the sky. When there is a traffic jam, all you have to do is shout "Take off!" "It can fly.

If I were a scientist, I would also invent the earth cleaner. With the rapid development of the world economy, people's living standards have been greatly improved. However, the problem of environmental pollution is becoming more and more serious. The climate becomes abnormal, the temperature rises year by year, typhoons keep coming, the ozone hole appears over Antarctica, and the SARS virus is rampant ... all these are the consequences of our human destruction of the environment. Now, as long as I use my earth cleaner, in an instant, I can remove garbage, make the air fresh, make the rivers green and clear, and make the earth rejuvenate again.

If I were a scientist, I would invent a powerful and light laser weapon. Its shape is similar to that of an ordinary submachine gun, but it can be folded and carried very conveniently. It can kill enemies, destroy tanks and planes, destroy missiles and even sink ships within the range of 10 km. This laser weapon also has a three-dimensional perspective quasi-center, which can see the target blocked by some objects.

Unconsciously, I came to 2047 and I have become a scientist. At that time, I was on my way to Mars to do research. When I came back, we were attacked by aliens. We were ready to leave at full speed, but they were after me. I took out my newly manufactured ZJ-47 and shot at the enemy. Soon, I killed them all.

As long as I study hard now, I believe my dream will come true soon.

If I were a scientist, I would like to be a scientist. If my dream comes true, I will definitely make the world a better place.

If I were a scientist, I would make a machine that could save time.

In this way, people can save time, and then build a time ship, which will take us back to the past and everything we have experienced in the past.

To experience the past life.

I will fly a spaceship and take those who don't know the true meaning of' an inch of time and an inch of gold, and an inch of time and an inch of money can't be bought' to explore the era when Li Bai lived and listen to his teachings.

Because Li Bai didn't know how to cherish time when he was a child, it was grandma who educated him by grinding iron bars into embroidery needles.

Since then, he has always remembered this wise saying,' As long as you work hard, iron bars are ground into needles', and studied hard and observed carefully.

He wrote many beautiful poems, which spread among people for a long time and became a famous great poet in the Tang Dynasty. People praised him as a "poet fairy".

I believe that people who go with me will gain a lot. In their future work and study, they will take time seriously, save time, cherish time, add luster to their lives and make contributions to society.

If I were a scientist, I would invent a multifunctional car. As long as someone drives it, it will be very comfortable.

This kind of car can also start, drive and shut down automatically. It can not only travel on land, but also on water. It can also become a submersible roaming on the seabed, taking people to watch the wonderful underwater world and soaring in the air like an airplane.

Of course, this multi-function vehicle will never have a traffic accident, and people can rest assured to ride it.

If I were a scientist, I would make a magic potion. Hungry people will not be hungry as long as they drink it, but will become stronger and stronger. This is specially made for the poor, but greedy people will become poorer and hungrier than the poor after drinking it.

If I were a scientist, I would develop a special kind of clothes. As long as people wear it, it will be very refreshing when it is hot in summer and warm as spring when it is cold in winter.

In this way, people will not be afraid of heat and cold as before.

All this is just' if'.

To do this, we must master profound scientific and cultural knowledge.

I will study hard scientific and cultural knowledge and lay a good foundation from now on.

I believe this day is not far from me.

...

If I were a scientist (800 words), everyone would have their favorite career. Some people want to be teachers, some want to be doctors, and some want to be astronauts.

I want to be a scientist.

If I were a scientist, I would invent a car that can be used by water, land and air.

Water represents a car in the water. You will ask: How can a car run in the water? Let me tell you something! If it is surrounded by water, an oxygen cylinder will appear in front of you, and four tires will become four propellers.

Land represents land.

Empty represents the sky. When there is a traffic jam, all you have to do is shout "Take off!" "It can fly.

If I were a scientist, I would also invent the earth cleaner.

With the rapid development of the world economy, people's living standards have been greatly improved.

However, the problem of environmental pollution is becoming more and more serious.

The climate becomes abnormal, the temperature rises year by year, typhoons keep coming, the ozone hole appears over Antarctica, and the SARS virus is rampant ... all these are the consequences of our human destruction of the environment.

Now, as long as I use my earth cleaner, in an instant, I can remove garbage, make the air fresh, make the rivers green and clear, and make the earth rejuvenate again.

If I were a scientist, I would invent a powerful and light laser weapon. Its shape is similar to that of an ordinary submachine gun, but it can be folded and carried very conveniently.

It can kill enemies, destroy tanks and planes, destroy missiles and even sink ships within the range of 10 km.

This laser weapon also has a three-dimensional perspective quasi-center, which can see the target blocked by some objects.

Unconsciously, I came to 2047 and I have become a scientist. At that time, I was on my way to Mars to do research. When I came back, we were attacked by aliens. We were ready to leave at full speed, but they were after me. I took out my newly manufactured ZJ-47 and shot at the enemy. Soon, I killed them all.

As long as I study hard now, I believe my dream will come true soon.

If I were a scientist, I would invent many machines and make contributions to the human world.

If I were a scientist, I would invent a universal absorber to absorb all the rubbish. In another day, garbage will become a new thing. Keep our home clean, so that we can also use garbage instead of throwing it away.

If I were a scientist, I would invent a universal air conditioner, which can automatically adjust the temperature with the change of weather, make the cold winter warm, make the hot summer cool and make the whole world comfortable.

If I were a scientist, I would invent an electronic blackboard, which can display all the new words or expressions on the blackboard through the topics taught by the teacher. In this way, teachers can spend a lot of time imparting knowledge to us, instead of spending time writing and not delaying our study time.

If I were a scientist, I would invent a kind of replaceable shoes. When the weather is hot, as long as I stamp my foot, the machine inside will work, and the leather on my shoes will slowly spread out and become sandals. When the weather is cold, as long as you stamp your feet again, the machine inside will react again, and the leather on your shoes will slowly cover and become leather shoes.

If I were a scientist, I would invent a bed. If you feel tired, backache and backache, just press the button while lying on the bed, and you will feel something protruding slowly and retracting gradually. Of course, there are buttons on the bed to adjust what is uncomfortable, so you don't need others to help you beat your back and eliminate fatigue.

If I were a scientist, I would invent a movable universal house, which can be moved to the place we like at any time, so that children don't have to work so hard at school and adults don't have to be so tired at work.

In addition, it can not only shelter from the wind and rain, but also install fire-proof and anti-theft devices, which brings a lot of convenience to people's lives.

If all my wishes can come true, how wonderful the world will be! I hope that scientists all over the world will work together with me to realize this dream at an early date and make human life comfortable and convenient.

...

If I am a scientist, my composition life is rich and colorful, but who will make our life full of color? Needless to say, scientists are respected by people. Scientists make our life more convenient: inventing electrical appliances, clothes and furniture ... How great scientists are. If I were a scientist … if I were a scientist, I would invent a multifunctional potion.

That potion can appear what you want and bring it back to life! I rushed to the laboratory, holding a big bottle and some experimental items such as potassium permanganate.

When I went to the lab, I put on my lab coat and sat down. I put potassium permanganate, salt and other drugs into a big bottle and then stir them with chopsticks. The water in the cup has become cloudy. I put another spoonful of sugar and a spoonful of multifunctional liquid, and the cup bubbled.

In order to confirm the success of my experiment, I jumped out happily with a bottle, and a drop of medicine accidentally fell on the azalea. Ah, a miracle happened. Rhododendron bent down and smiled at me, as if thanking me for setting it free. I went to the window again and dropped the medicine on the dead tropical fish. In an instant, the fish jumped into the water and shook his head at me, and the wave of happiness in my heart rose to a new level.

Happy, I decided to distribute this potion all over the world, so I changed it into a car and sent the magic potion on the car to every supermarket and shop. Potions have just been sold, but they are rare. I am proud to smile beside me! "ah! Go out to play! " At this time, I just woke up from my dream.

Although this is only my dream, I must move towards this goal! Scientists are so clever that I really want to be a scientist.

If I were a scientist, the first thing I would invent would be an automated house.

If there is a flood, the automatic house can be automatically moved to a safe place.

Migrants from the Three Gorges of the Yangtze River don't have to leave their homes like this, but they can also save a lot of money for the country! If I were a scientist, the second thing I would do was to invent many automatic war robots.

With it, we China people don't have to be afraid of being invaded by world powers.

At the same time, let Americans see what China can do and kill his arrogance.

If I were a scientist, the third thing I would do would be to invent a TV that is more advanced than a computer. With it, as long as I say what I want to watch, the TV will play automatically, without buttons or switches.

This brings a lot of convenience to people.

Let the children immerse themselves in the colorful fairy tale world all day.

If I were a scientist, I would also invent a hemp switch.

Because of it, we can keep all thieves out.

Give them a taste of being electrocuted.

Besides, only the owner can open this door.

Suddenly, my mother woke me up from my dream.

So this is a dream! However, when I grow up, I must become a real scientist and invent many things to realize my dream.

If I were a scientist, my composition would be urgent! ! ! More than 300 words! ! In a beautiful childhood, we often love fantasy.

Some fantasize about being a rich man with great wealth, some fantasize about being a respected mayor, and some fantasize about being a doctor who can eliminate people's diseases, but I want to be a scientist who benefits the people.

If I were a scientist, I would invent a kind of magic clothes.

This kind of clothes will make you feel cool in summer and warm in winter, so people don't have to worry about adding or subtracting clothes because of the changes of the four seasons.

This kind of clothes also has magical disease-resistant function. You don't have to worry about getting sick when you put it on, because this kind of clothes has a good disease-resistant effect, and ordinary people won't get sick.

If I were a scientist, I would make a magical machine.

This machine can eliminate natural disasters such as tsunami, earthquake and volcanic eruption.

Where there is a volcanic eruption, just throw it down and don't be afraid in the future.

Because this machine sealed the crater, the lava in the volcano could not erupt.

Send it to the bottom of the sea, it will seal the land on the bottom of the sea, the earth will not move and there will be no tsunami.

If I were a scientist, I would develop a needle that can cure all diseases, even diseases that doctors in the world can't cure now.

Because it releases cells that can kill all viruses, as long as everyone injects a needle, it can play a preventive role.

Although I can't realize this wish now, I believe that as long as I study hard now and develop well when I grow up, this wish will come true naturally.

If I were a scientist, I would apply what I have learned to benefit mankind, and work hard for the happiness of our mankind like many countries in the world.

First of all, I want to invent an intelligent authenticity instrument.

Nowadays, there are many fake and shoddy products, which infringe everyone's interests and some even endanger people's lives.

For example, in the first half of last year, there was a "big-headed doll" incident in our country, which was harmed by fake milk powder. Those dolls that parents regard as "the apple of their eyes" and "the darling of their hearts" have become "strange" dolls because of eating inferior milk powder, which is really heartbreaking.

Now I have my intelligent authenticity meter, no matter what product, as long as I touch it, it will immediately tell you the quality, safety and hygiene of this product.

Fake and shoddy products are exposed to the intelligent authenticity tester.

In this way, people will never be infringed by fake and shoddy products again, and they can shop with confidence and live happily.

I also want to invent the earth cleaner.

With the rapid development of the world economy, people's living standards have been greatly improved.

However, the problem of environmental pollution is becoming more and more serious.

The climate becomes abnormal, the temperature rises year by year, typhoons keep coming, the ozone hole appears over Antarctica, and the SARS virus is rampant ... all these are the consequences of our human destruction of the environment.

Now, as long as I use my earth cleaner, in an instant, I can remove garbage, make the air fresh, make the rivers green and clear, and make the earth rejuvenate again.

I also want to invent a time-space reminiscer, through which we can see everything that happened before, which will bring good news to our archaeologists.

I also want to invent … I believe that as long as we study hard, love science and be brave in innovation, we will certainly realize our dreams.

As a great man said, "Today's world is yesterday's dream, and today's dream will be tomorrow's world".

Let's work hard for our dreams!

Urgent! ! ! ! ! If I were a scientist, I would first enter the computer network, come to the happy planet, borrow the sensory exchanger from the old urchin grandfather and put it in the cloning machine. Five minutes later, a new sensory switch was born.

The exam is coming, and both teachers and parents are worried. They bought me many newspapers. These problems are like a mountain pressing on me.

However, doing it every day is not a problem, which makes my hands numb and my brain confused.

Slowly, I don't even know what one plus one is.

But adults say, "When you are young, you are willing to endure hardships, and when you grow up, you will have a future." .

I was upset and thought, if only adults could experience the taste of children.

Oh, yes, my sensory switch! While my mother was cooking, I took out my sensory switch, pressed the ape button, aimed at my mother's brain and clicked ok. I am so excited.

Suddenly, my mother put down the spoon, untied the waist cloth and went to my study to write a topic. As for me, I made fried chicken legs and roasted sausages, which I like best.

After a while, I heard my mother say, "I'm so tired, my hands are sore …" I ignored it and continued to cook.

"How to buy me so many newspapers, can I do it? This mom, really.

"I laughed.

Then he went over and said, "Have a rest, son!" " "No, I have to let you check!" Mom said helplessly.

It seems that mom already knows that it's too tiring to do so many questions. Let me change it for her! I pressed the EPA button, and my mother became a mother again. She hugged me and said, "Son, it's my mother's fault. I know you are tired of doing problems. Go out to play! " "Really?" I said excitedly.

Mom said happily, "Really".

"Great!" I jumped three feet.

Hey hey, it's great not to do so many questions! If I can clone, if I can clone, I will clone many people like my mother.

"Only a mother is good in the world, and a child with a mother is like a baby. If you throw it into your mother's arms, you won't enjoy happiness ... "How happy it is to have a mother.

On weekdays, my mother takes care of us, and we grow up healthily and enjoy warm maternal love under her care.

However, there are still many orphans, and more unfortunately, some orphans suffer from AIDS.

They were just born when a thunderstorm struck them.

In their lives, they are lonely without maternal love.

How pitiful their lives are! Let's imagine how envious they are when they see other children of the same age and their mothers walking happily on the road and occasionally coquetry! When he slept in the bed of the orphanage, it was raining cats and dogs outside, and thunder resounded through the sky. At this time, they want their mother to come over to accompany them, hug themselves and sing a song to him ... how painful it is without their mother! Although there are many volunteers to take care of them, they may be accidentally infected with AIDS and their lives will face death.

Therefore, I want to clone a few mothers who are immune to all diseases, so that they can take care of AIDS orphans and make those AIDS orphans like us! ! And those mothers are in excellent health and will never catch any diseases.

I really hope my beautiful imagination can come true.

If I were a scientist, everyone had their own ideals, and I was no exception. I have an ideal, that is to be a famous scientist.

If I were a scientist, I would make a magic rice cooker.

It only takes four seconds to cook the meal. If you are doing something else, just shout "Come on.

"Delicious food and delicious rice will appear in front of your eyes.

I can also make a pen. If you write a wrong word, it will automatically correct it for you, so that the teacher won't have so much trouble correcting the homework.

I will also make a new plane. If a person is bored on the plane, there is a server on the plane. If you want to play CDs and movies, if you want to watch movies or watch TV! If you just click on CDs and videos, videos will appear in front of you.

I will also invent a kind of glass, its name is vacuum glass, not ordinary glass, but made of special materials.

As long as any room is dirty or dusty, this vacuum glass can completely absorb the dust within 15 meters, and the vacuum glass is as fast as a magnet.

You don't have to drag around with a mop anymore.

Just remove the dust from the vacuum glass.

Our ideal, not only depends on this mouth, but also depends on actions to prove it. To keep our word, we can't turn our ideal into an idea in our hearts, but make it a reality.

If I am a scientist, different people have different ideals, some want to be a businessman, some want to be a billionaire … and my ideal is to be a scientist and make the world a better place.

If I were a scientist, I would invent a universal pill that could cure any disease.

This will make the elderly healthier and live longer, adults more energetic and children more lively and lovely.

So people don't have to worry about getting sick? If I were a scientist, I would make our earth green and eliminate pollutants in the air.

It is also necessary to build special bridges between cities. This kind of bridge is a new building material sterilized and compressed by urban construction waste, which is very environmentally friendly.

If I were a scientist, I would replace all cars with solar cars, so that cars don't have to burn gasoline, they don't emit exhaust gas, and the atmosphere is not so easily destroyed.

If I were a scientist, I would build an all-powerful satellite to explore every planet and let some people on the earth move to the right planet.

In this way, the space we live in is not crowded, and human beings can roam the universe to their heart's content ... but there are still many things to do to really become a scientist.

At present, I only have one goal, and that is to study hard and make this what it is if it is not.

If I were a scientist, I would write at least 500 words and only one invention. ! If I were a scientist, I would do many things that shocked the world.

One day, my radio station received a pulse signal.

At first glance, I thought it was an invitation letter from Enceladus life discovered in Ethan Park last time, but after listening carefully, I found it was wrong. This signal is not sent by Enceladus, because their signal is not in this band at all.

We immediately started the signal analyzer of each band, and finally analyzed the signal with the S-band analyzer.

Signals generally mean: we are on Uranus, help us, we are losing it! No, alien life is in danger! I checked with Parker Ethan and set off with his QQ and some guards.

The spaceship soon picked them up in a sealed cabin.

As soon as the cabin is opened, my god, who is this, and how is it so similar to the earth? Only the bridge of the nose is higher than the eyebrows and the height is exactly the same.

They seem to be dying.

The guards and I helped them into the house. After a while, they were fresh and full of energy.

I immediately became alert. They're not pretending, are they? I secretly picked up my laser gun and pointed it at them.

I took the radio and said, "What do you do? Say! " As they stepped back, they waved their hands and said, "You misunderstood, we have no hostility.

"I shouted," then how did you recover so quickly? " Hearing this, they quickly said, "You misunderstood. We live by breathing carbon dioxide. Because our neighbors always throw green plants at our star and often attack it, most of us died, and only a few escaped.

There wasn't enough carbon dioxide on board, but luckily you saved us.

Because you are rich in carbon dioxide here, we have recovered quickly.

"After hearing what they said, I just put down the gun.

I said, "We just live on oxygen. You stay here for a while, and we are only mutually beneficial.

"They are very happy.

In the following period of time, I taught them some earth languages.

By interacting with the outside world, they can gradually talk to us without the radio.

Finally, one day, they are leaving.

We exchanged pulse signals and waved goodbye.

After a busy day, I received a signal, which was actually the invitation letter sent by those people last time.

When I finished my work, I wrote back and said I would see you in a month.

I immediately set out to develop a spaceship.

The spaceship is finished.

I wrote "Star Messenger" on the hull with a big brush and my "Wild Grass".

I found Venus according to the instructions they gave me.

They were so close to us! When I got off the boat, they immediately welcomed me into a small room and put me in a cabin with wheels like a robot.

It turns out that this is a space capsule specially prepared for us, which is filled with a lot of air like the earth.

How thoughtful! They showed me around several places.

Suddenly a cannon shot and a shell landed not far in front of me.

Fortunately, the universal cabin is very strong.

One of them told me that this was their original neighbor, a belligerent planet.

I am in a hurry. What should I do? He said: "Nothing, we know that they will definitely come to trouble, and we are prepared.

"I have a look, a few laser cannons emit hot laser, forming a laser net.

Several deadly planes rushed over and turned to ashes in an instant.

Seeing that the situation was wrong, the leader quickly fled with several pairs of beaten soldiers.

These friends of mine are actually peace-loving people, and it is only because of the neighboring stars that there is a war.

From then on, I often went to their place and was warmly received every time.

I often send some dry ice to thank them for their hospitality.

I am very happy, because the earth has some more alien friends.

(2) If I am a scientist and human beings live in society, everyone should do something that contributes to society.

Because people have different aspirations, they choose different careers, but I want to be a scientist.

If I were a scientist, I would invent a multifunctional and compact nano-watch.

It functions like a computer, but it is more high-tech.

It can help you go to heaven.

As long as you want to fly freely in the blue sky like a bird, then you can say to it, "Look, look, give me a pair of wings, I want to fly."

"It will become a pair of wings, let you plug it in, and then you can fly! Look, isn't it interesting? By the way, I have a little secret to tell you. In fact, it can not only go to heaven, but also go to sea, land and even go to hell.

I don't think you really want to go to hell! Then your life is really over! Because as long as you go to hell, the devil won't let you up.

If I were a scientist, I would make an air purifier to purify the air in the city.

At present, the air pollution in China is becoming more and more serious.

Before conquering the purifier technology, I encountered a difficult problem: how to turn waste gas into fresh air? As it happens, I saw a tree planted at the door. I patted my head and shouted, "There is a way!" "I extracted a substance from the leaves and called it phyllin, which can make trees purify the air.

I integrated the leaf elements with the machine and made a purifier.

Of course, I have to test whether the purifier has this function.

So, I installed it on the exhaust pipe of the car. I got on the bus and caught fire. Then I got off and smelled it behind the exhaust pipe. Sure enough, the exhaust pipe is not exhaust gas, but fresh air I immediately asked the robot Bobby and his friends to make seven purifiers ten times larger than the plane.

They are all equipped with remote control devices. They can go wherever I want them to go, wherever the air needs to be purified.

However, there is another disadvantage of the purifier, which is power consumption.

I sent the purifier to the sky because the wind in the sky can charge the purifier.

However, the purifier comes down once a week to purify the air.

Now, the air in our country is getting fresher and fresher.

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