The fifth grade explanatory essay model essay

Its broad and deep chest, strong shoulders and amines, short body and round abdomen, and horizontal back are the biggest features. On the round face with prominent forehead, there are small ears, round eyes and a flat nose, and the expression is rich and lovely. Of course, the biggest feature is beautiful long hair. Its color and appearance are uniform, silver gray, striped and color matching, which are more varied than other pure cats. Up to now, it has been confirmed that there are 3 colors. (This passage mainly uses classification, and at the same time uses the explanation method of column numbers.)

Among these, the average person especially likes the silver-white Persian cat with emerald green pupils. A shining silvery white body and a green suit with black eyelids. The beautiful contrast of its colors is the biggest feature of silver-white Persian cats.

Besides, among all Persian cats, the rarest and most valuable cat is the orange cat. First of all, it is impossible to see the appearance without stripes, which is purely red, and whether it will be close to the original standard cat if it continues to choose to mate. This is what breeders dream of achieving. (This paragraph is mainly used for comparison, that is, Persian cats are compared with the original standard cats. )

Appearance characteristics: head, round and wide, without edges and corners; The cheeks are rich and the neck is thick; Ears are small and separated by a tuft of hair; The upper and lower jaws are thick and the nose is short and saddle-shaped. Eyes are big and round, intense and expressive, and most of them are yellow. But there are also green and blue colors, which are in harmony with the Mao Mao color of the body. The tail is thickly coated. There are long feathery hairs at the end. The tail is one of the characteristics of Persian cats.

The earth is a beautiful planet on which human beings live. She is the mother of mankind, giving us food, clothes and everything we need. However, we are destroying her other children-plants, lower animals, so that the ecology has been destroyed, and finally human beings can not survive. We can only say goodbye to her and live on other planets.

in 216, mankind successfully copied the protective umbrella of the earth, the ozone layer, and placed it around all the solid planets in the solar system to resist the harm from the sun. And send air to every planet. Composition Network

In 217, a "time compression channel" was born in the sweat of many scientists, with the purpose of connecting every planet with the ozone layer, so that human beings can have many "earths". But each planet is too far apart, ranging from thousands of light years to billions of light years. When they reach their destination, they are almost in the grave for a long time. What can I do? Don't worry, since it is a time compression channel, it can naturally compress time, so it only takes a few hours, not billions of light years. Composition Network

With air and channels, we need water. The earth is short of fresh water resources, but there is a lot of seawater. Scientists have invented the "water purifier". It is a channel, and when the water flows to other planets, it is filtered by the water purification chip on the channel for countless times, turning seawater into fresh water.

It's not enough to have these things, but also to adapt humans and animals to the environment. In view of this, scientists have moved some plants with strong vitality on the earth to other planets, making their scenery and environment similar to that of the earth. Then, an "acid rain filter" is installed around the planet where acid rain will fall, filtering acid rain into ordinary rain, so that it will not hurt the creatures above.

then, it is the house. If construction workers are allowed to build it, the speed will be too slow, and the earth and human beings can't wait. At this time, a machine played an important role, "stereo camera". Stereo camera can turn the photographed things into three-dimensional. Adjust the camera to the required size, and then put some materials in it. When it started to run, the material was folded into a model, and when the model was "released", the "magnifying lamp" was turned on, and the house appeared in front of people.

people moved in in batches. But you can't use the transportation on the earth! Scientists set up a "jet car" on Mars according to the different characteristics of each planet. Most spray cars are made of sealed super plastic. For the sake of beauty, you can draw your favorite patterns on them with authoritarian paint.

on mercury, the daytime temperature is too high, and the temperature difference between day and night is too large. Scientists have developed the "Mercury Bicycle" on the basis of bicycles. Mercury bicycle tires are made of "heat-resistant rubber", which absorbs a little heat when the temperature is high during the day and isolates the rest. When the temperature is low at night, it gives off heat again. In this way, the "insulation board" is connected to the pedal and the front of the bicycle to make the temperature suitable.

on Saturn, because Saturn is more attractive than the earth. Scientists have created "suspended shoes" again. This shoe sucks in exhaust gas, and the "air purification chip" inside purifies it into air for human beings and animals, and then ejects it downward, so that the impact of the gas rebounds and the shoe floats upward. This shoe is equipped with a display screen, which can be used to adjust the direction, destination, speed and distance from the ground.

The space migration base has been built, and human beings can rest assured, but we can't destroy the environment, kill animals and cut down trees at will, and we can't destroy our home created by ourselves.

1. My pencil case

When I was in the fourth grade, my mother gave me a beautiful pencil case.

Its oval shell made of iron sheet is all painted with light yellow paint, which looks like a miniature stage illuminated by lights. The pattern on the lid of the box is a beautiful girl in gorgeous clothes, and a pair of bright eyes look at me kindly, as if to say: We will be inseparable friends in the future. The back of the pencil case is painted with a lovely red elf, which is very beautiful.

when you turn on the magnet switch of the pencil case, the first thing you see is my class schedule. There is a yellow "small curtain" under the curriculum. Open the "small curtain", hey! My little helpers are sleeping soundly They each lie in their own "small bedroom". You see, my pencil and pen are lying in two long "small beds", and no one touches anyone; The eraser lives in a square "house"; My "long general" ruler is lying comfortably in the "big bed" specially made for it. They have been tired all day, so let them have a good rest!

don't look at my pencil case. It doesn't say a word at ordinary times, but when it comes to the critical moment, it is quite enthusiastic. As soon as I opened the pencil case, the pen popped out and helped me write my homework neatly. When I start drawing, the ruler will lay a straight line for me, so that I can draw the lines straight and long; When writing wrong words, the eraser will volunteer to help me erase the mistakes ...

The pencil case serves me faithfully and is my friend in study. I like my pencil case very much.

2. My pencil case

I have a beautiful plastic pencil case with exquisite shape, complete functions. My pencil case, the first half is semi-circular and the second half is rectangular. Our pen cover is made of light blue plastic. There is a lively and lovely little girl with a paintbrush drawing blue sky, white clouds and flying birds, and a naughty puppy wagging its head and tail. It seems to be facing the little girl's winding and rippling river. The river is clear and rushing to the distance. There are colorful flowers blooming on the grassland, including wild chrysanthemums, sunflowers, morning glory flowers and many nameless wild flowers. It seems to me that I am dancing with the breeze. There is also a Xin Fu English in the middle of the pen cover.

The fragrance of flowers lures beautiful butterflies and golden bees. They jump and sway among the flowers, as if a group of children are chasing and playing.

My pen cover is a multifunctional cover. It can be used not only as a cover, but also as a ruler, and the front can also be used as a protractor. Open the pen cover on the front, and there is a small transparent plastic pocket inside, which can be used to insert the curriculum. There are three black squares in the box, the slender one can hold a ruler, the short one can hold a pen eraser, and the largest one can hold all kinds of pencils, pens and ballpoint pens.

My pencil box accompanies me to study every day. It is my good friend and I like it.

The pen is an indispensable part in our life. We need it all the time for teachers to work and students to do their homework. However, there are still many inconveniences with pens in real life. For example, it is very cold to type ink frequently when writing pens, so I will invent a magic pen.

The pen in the future will be cylindrical. The function of the pen can be Dora. The future pen is equipped with an automatic controller and an ink reservoir. When your ink is finished, the ink will be automatically added to the nib. This pen is equipped with a micro air conditioner in the middle. Just press the green button on the pen to be particularly cool. You won't feel hot when writing in summer. It will be very cold when writing in winter, so you can press the red button. It's especially comfortable to write when there is hot air coming out immediately. There are four induction lamp at the top of the pen tip. When it is 2 cm away from the book, it will emit dazzling light if it is too close to the book, so that you can't see your handwriting clearly. With induction lamp, you don't have to worry about your shortsightedness. In addition, there is a typo discriminator in the pen. If you write wrongly, it will emit a "beep" sound to remind you. That way, we won't write typos now. There is a small MP3 at the top of the pen, so you can listen to songs to relax when you do your homework.

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