Expository essay on Zhaoyuan 500 words 5

The pen lives in us.

Teachers do their work, students do homework, etc., we have to use pens all the time, but there are still many inconveniences in real life pens, such as writing pens often with ink, writing pens in winter is still very cold, so I want to invent a magic pen

The pen of the future is a cylindrical shape, and the function of the pen can be dora The body of the pen of the future is equipped with an automatic controller and an ink reservoir When your ink is finished, the ink will be automatically added to the nib of the pen There is a miniature air conditioner in the middle of this pen As long as you press the green button on the pen, it will be very cool You will not feel hot when writing in the summer When you write a pen in winter, it will be very cold, then you press the red button, and immediately there will be heat coming out of the pen It is very comfortable when writing There are four sensor lights at the upper end of the nib It will illuminate normally when it is twenty centimeters away from the book, and if it is too close to the book, it will emit a dazzling light, so that you can't see the words you write clearly With the sensor light, you don't have to worry about your eyes being myopic In addition, there is a typo discriminator in the pen, if you write a wrong word, it will make a "beep" sound to remind you, so that you will not write a typo There is a small *** installed on the top of the pen to relax by listening to songs when you are writing homework.

This pen can not only allow us not to make typos, but also improve our interest in learning, so that we can learn in a relaxed and happy way.

Life will come into contact with a variety of "bridges", providing convenience or scenery in life, making life richer and more colorful. The most memorable bridge for me is: the overpass!

Although I haven't been to an overpass, and I haven't seen a real overpass with my own eyes, I still remember that I studied a text, the main content is to describe the overpass, I read the overpass from the book, it's beautiful! I also sometimes go online to learn about overpasses. Now I know the full name of the overpass "three-dimensional crossing bridge", and the interpretation of the sea is:

It is a modern land bridge that is layered up and down, travels in multiple directions and does not disturb each other at important traffic intersections in the city. I love the overpass, it's like a dragon winding around, the overpass is 40 meters long and 42 meters wide, with a 32-meter motorway and eight lanes in both directions, and sidewalks on each side of the 5-meter sidewalk. I like the overpass in Beijing the most, Beijing is the capital of my Lazheng, and the overpass is even more perfect when it is built!

There are also some small bridges on the overpass: Zizhu Bridge, Zhonglou North Bridge, Yuegezhuang Bridge, Yuetan North and South Bridge, Yuantong Bridge, Yufei Bridge, Yuquanying Bridge, You'anmen Bridge Bureau, Shenyong, Hegong Bridge, Yaowahu Bridge, Wuyuan Bridge, Wufang Bridge, Suzhou Bridge, Siyuan Bridge, Eighteen Tansonglidian Bridge! And so much!

That's why I love overpasses! I love overpasses, I think the most beautiful bridges!

First of all, there should be a spatial order, for example, the distance from the school gate to the comprehensive building, what is our school gate? Example: At the entrance of our school, there is a big sign with the sentence "Study for the rise of China!"

This sentence has always been in our hearts ... After introducing the overall, let's talk about our teachers, and finally briefly say, I love this school, etc., or put forward the shortcomings, hoping that our school will correct its shortcomings, carry forward its advantages, and get better and better.

Tomatoes are also called tomatoes. Because of its bright color, fruit juice, sweet and sour, nutritious, and unique flavor, it is deeply loved by everyone.

I also love tomatoes and ask my mom to bring me a tomato or two almost every day when she buys groceries. Why tomatoes are so favored, I think there are five reasons for luck. First, the color of the tomato is very bright, the surface is red, the red is so bright, so cute, so provoking people to eat, sure you will be hungry as soon as you see it.

The second is its delicious taste, whether it is eaten raw or cooked, it always tastes sweet and sour, which makes people have a great appetite. Thirdly, there is the light fragrance of Biwan, if you put your nose close to it, you will smell a unique fragrance of tomatoes, which seems to be mixed with sweet and sour. Fourth, it is the shape of the tomato, speaking of the shape of the tomato can be described as strange, some like a red pumpkin, some like a red baby face, and some can't say what it looks like.

Secondly, the nutritional value of tomatoes is also a lot, and tomatoes contain more calcium, phosphorus, iron, carotene, vitamins, nicotinic acid and other nutrients than many vegetables. Traditional Chinese medicine believes that tomato is sweet and sour, slightly cold, has the effect of strengthening the spleen and appetizing, quenching thirst, etc., and can be used medicinally for loss of appetite, fever, heatstroke, thirst and other symptoms. From this point of view, tomatoes have a lot of effects!

Tomatoes are both a delicious fruit and a nutritious vegetable! Map.

This data is ** on the map, and the final result is subject to the latest data on the map.

Hey, my children, don't think that we whales are fish, if you do, then you are very wrong, we whales are mammals. In addition, I would like to reveal a little secret to those who think I am a fish: I should supplement the biological "nutrition", hahahaha!

Our whales are very big animals, and a small tongue alone weighs as much as a dozen big fat pigs! If we open our mouths, you humans will stand in our mouths and raise your hands and not touch the roof of our mouths; Four people sat around a table in our mouths, and it looked very spacious! Hmph, look how big we are!

Oh, by the way, let me tell you, don't say this to my ancestors, it knows, you have to criticize me!

We have a lot of family members, but each has its own habits. See, the first one to appear is our little brother, the baleen whale, who has no teeth, so his diet is small fish and small shrimp; The second one to appear is my sibling, whose name is naturally I don't say you know, by the way, it's called toothed whales, and they have extremely sharp teeth, so we generally eat big fish and sea beasts; That one is our leader, the killer whale, he is very powerful, if you provoke him, he will be reckless!

We whales breathe with our lungs. When you exhale, you have to float to the surface, and the exhaled air forms a column of water. But different species of whales spew different columns of water

The water column of the little brother baleen whale is vertical, thin and tall; The water column of our toothed whale is sloping, thick and short. Look, we still have a lot of knowledge about cetaceans!

The way we slept was also fun. To be on the safe side, we always slept in groups, with our heads facing inwards and our tails facing outwards, in a circle.

We were viviparous and grew up drinking the milk of our mothers. We grow very fast, we can grow 30 kg - 50 kg in a day. And we have a long lifespan, we can live for decades - a hundred years.

After listening to my own statement, everyone will know something about our whales! If you come to us in the future, I will definitely welcome you!

Apples, also known as Tao Po, are kernels and fruits that contain a few seed pits from a firm, juicy flesh. Native to West Asia or Eastern Europe, there are about 7,500 varieties of commercial apples worldwide, which are sweet and sour, delicious and nutritious, and are one of the fruits suitable for all ages.

Nutritional value Fresh apples have a water content of 85%.

Apples are rich in carbohydrates, vitamins and trace elements. It is higher in vitamin A and carotene.

Effects on disease and health.

It is rich in pectin, a water-soluble dietary fiber. Pectin has the effect of protecting the intestinal wall, activating useful bacteria in the intestines, adjusting gastrointestinal function, absorbing water, eliminating constipation, stabilizing blood and sugar, beautifying the skin, adsorbing bile and cholesterol, and can effectively prevent hyperlipidemia, hypertension, hyperglycemia, clean the intestines, and prevent colorectal cancer.

Malic acid and citric acid in the sour taste of apples can increase the secretion of gastric juice and promote digestion.

Malic acid can also stabilize blood sugar and prevent diabetes, so diabetics should eat sour apples.

The fruit is rich in potassium and can prevent and treat high blood pressure. Because the salt intake in the diet of Chinese is seriously excessive, it leads to sodium and water retention in the body and promotes hypertension. Potassium lowers blood pressure by increasing the amount of sodium that promotes high blood pressure from the kidneys, reducing the amount of sodium in cells.

Potassium also dilates blood vessels, and works with pectin to prevent denae leuche syndrome.

Apples also protect against cancer and prevent lead poisoning.