When it comes to writing, everyone is familiar with it, especially the expository writing, which occupies an important position. The purpose of expository writing is to give people knowledge: or to explain the state, nature and function of things, or to clarify things. So what problems should we pay attention to when writing this kind of composition? The following is a description of something I collected and arranged. Welcome to share it. Introduction to a thing 1

We are all familiar with the appearance of lips, but what is a lip flower? It turns out that this is a strange flower, which is named because the outermost two bracts resemble sexy lips. This plant is bright red in color and has a strange shape, which makes people wonder at the ingenuity of nature.

Let's take a look at the appearance and distribution area of lip flowers first. Lipflower is a shrub or small tree, and its height is about 1 meter. The red part shaped like lips is actually not a petal, but a bract of a flower. Real flowers are in bracts, small, yellow or white, and the flowering period is from December to March of the following year. This exotic flower is mainly born in the broad-leaved forest, hillside forest or shrub of tropical forest at an altitude of 35-13 meters. It grows in the tropical rain forests of some countries in Central America or South America, such as Colombia, Costa Rica, Panama and Ecuador.

then, let's learn about the cultivation essentials of lip flowers. It is more complicated to feed lip flowers. To feed it, we need to pay attention to the following points: First, the soil for planting lip flowers should be fertile. Second, pay attention to keep the soil moist, because the lip flower originally lived in the rainforest, so it is more suitable for an environment with sufficient water. Third, the planting environment of lip flowers should be above 2 degrees Celsius as far as possible. Fourth, pay attention to pruning the branches of lip flowers. Fifth, it is necessary to illuminate the lip flowers. Six, fertilization once a month. After listening to this, do you also want to try to plant lip flowers?

finally, let's get to know the current situation of lip flowers. Because of the uncontrolled deforestation in some countries, the beautiful lip flower is on the verge of extinction. For the growth of labiatae and other exotic flowers and grasses, we must cherish trees and protect forest resources! I have a special friend who is an aquarium pet. Guess what it is? Fish? Turtle? Crab? Haha, neither, but a crayfish. My crayfish is dressed in dark red armor, often holding two big pliers like scissors, patrolling everywhere, with two long tentacles swinging around, just like a commanding general. It has two small, round black eyes on its conical head, like two black gems, and the most amazing thing is that it can stretch freely. It has eight thin legs, and when crawling, it carries a section of the body, as if dragging several carriages forward.

Crayfish is aggressive by nature. When I poked it with a stick, the originally prone crayfish immediately raised its upper body, waving two big pincers, as if to say: Who dares to mess with me? My pincers are not vegetarian. Look, I'll give you an invincible shrimp fist! It's so cute that one's teeth are bared. When I put the stick into the water, it immediately lifted the stick with its big claw, sometimes horizontally, sometimes sideways, and sometimes held high above my head, as if doing broadcast gymnastics, which really made people laugh.

crayfish like to play the game of "prison break" besides holding things with big claws. It often erects its body, waves the big aojiang, and climbs up with both hands and feet, as if it is very eager for the wonderful world outside. But the smooth wall can't climb out. It tries again and again, and fails again and again, and the box is banging. It really has the momentum of not hitting the south wall and not looking back.

Crayfish is an omnivore. It eats everything, including vegetables, melons and fruits, rice, steamed bread and so on. It is really a "good baby" who is not picky about food. Every day, I like to feed it and watch it eat. I put the washed vegetable leaves into the box, only to see the crayfish pouncing on the vegetables immediately. First, it carefully picked up the leaves with two claws, and then skillfully sent them to its mouth. The sharp little mouth clattered and ate them, and while eating, it proudly shook its tentacles on its head, as if to say: yummy, yummy, it's delicious! . Soon, a large piece of vegetable leaves was wiped out. Sometimes, when I feed it watermelon, it will eat all the red pulp, leaving only the skin that has been chewed clean. It seems that it is also a teapot to cook jiaozi-know fairly well.

My red general has brought me countless happiness. Introduce a kind of thing description article 3

Folding cat is produced in Scotland, and later it was bred with American shorthair cat.

Folding cats, mammals, Carnivora. As the name implies, the ears are folded, and the two ears hang down beside the face. The face is round, the eyes are round and big, and there are many colors, such as gradual gold, gradual gray and black, tiger pattern, white chest and black gray. Fat, medium size. An adult folded-ear cat is about 6 kilograms, with short limbs and long tail, which is softer than the hair of a tiger's tail, shorter and more hairy than a lion's tail. The folded-ear cat looks like a beautiful S-shape from the side, with a body length of about 5 cm. The female cat with folded ears has a slightly sharper face, and the whole cat looks slightly like a tiger.

Folding cat likes to lie quietly, but it doesn't mean it is not lively. Cats are desert animals. They prey on their own prey and extract water from fresh meat without drinking water. However, when raising a family, we should pay attention to not feeding dry cat food all the time, properly supplementing chickens, ducks and fish, etc., and feeding insect repellent to folded-ear cats every month. Folding ear cats will change their long hair in winter, and in winter, folding ear cats are used to sleeping in grass baskets. Folding cat likes to look out of the window, and occasionally likes to go out hunting. It likes moving things, so it is best to prepare a small animal to play with it. Folding-ear cats are very docile, do not fight with other animals, and are in harmony with their owners. The activity of folding-ear cats can reach about three kilometers, and taking them out to play can be much larger than that of dogs, chickens and ducks.

I suggest you keep a folding cat, which can be your companion. Introduce a kind of thing description article 4

Looking at the fresh fruits in the fruit bowl, my mouth water suddenly flew down three thousands of feet. Especially those red, moist, sweet and crisp apples always keep my appetite up.

Apples are much more beautiful than those dry little oranges beside them. It's like a lovely princess. A thin coat with a combination of bright red and light blue is very suitable for wearing on the body. Two small emerald leaves, like a bow, are firmly worn on the head, which really looks like the little queen among many fruits in the fruit bowl.

Thirsty, hungry, greedy, tired ... Pick up an apple and take a bite, and the juice will immediately pop out of your mouth. The flesh is crisp, delicate and slag-free. The sweet taste permeates the whole mouth and impacts your taste buds. When you slowly taste it and swallow it, your insides will be filled with that wonderful taste, urging you to eat another bite quickly. Juicing is also a good choice.

apples are not only delicious, but also high in nutrients. This is one of the reasons why people like it. Its vitamin c content is extremely high. An apple a day supplements the essential vitamins. "An apple a day keeps the doctor away." Therefore, eating apples often has many benefits.

It is said that the biggest and heaviest apple in the world is an apple in Kent, England, weighing 1. 67 kilograms. Although I haven't seen it with my own eyes, I know it must be much bigger than other apples. You know, the average apple weighs only about . About 25 kilograms! It is equivalent to the weight of several apples! Really worthy of being a veritable Apple champion.

oh, stop. The more I write, the more greedy I am. I went to wash my hands and eat apples. Introduction to a thing 5

My bouncer was awarded by the teacher in the composition class.

Its legs are pink, conical, soft and have excellent springiness. The head is round, soft and yellow. The head is as big as a ping-pong ball, with one eye open and one eye closed, the mouth is like a number "3", and there is a red heart on his face, which makes people laugh and cry. Hands are rose red, and fingers are round like plum blossoms. Looks like a stick figure.

after I got the bouncer, I was very happy and began to play. If you want it to bounce, you must first press its head down with your hands, and your legs will be deformed from a cone to a cylinder. Release your hand again and it will fly. While flying, its hands will swing up and down, like a bird spreading its wings and flying. When it flies down, it will not land smoothly, but fall at will. If it is a real bird, it will definitely fall to pieces. Look at it lying on the ground with its head and legs still swinging back and forth. It's really like a bird being blindfolded and flying to stand up. It's really interesting!

I like this bouncer very much, because it is very interesting. Introduce a kind of thing description article 6

With the continuous progress of science and technology, many high technologies have appeared in our lives. Today I will talk about our washing machine.

The washing machine is an indispensable thing in the family, and it helps us a lot. My family's washing machine has a square body and wears silver-gray clothes. In some movies, there may be a scene where a person walks from one side of the washing machine to the other and comes to a magical world. Although the washing machine in our house is not as powerful as the washing machine in TV, it is not bad.

My washing machine can be reserved or pre-washed, and it also has the functions of Eco, rinsing+,soaking and so on. Although I don't know what these mean, they should be very powerful. There are many different washing methods: such as children's washing, colored washing, healthy washing, night washing, and so on. Just turn on the power, pour in the laundry detergent, and find a suitable washing method, so don't worry about it. Is it convenient?

My washing machine hasn't broken down after at least three years of use. Unlike my previous washing machine, it can't be used after a few days, so it has to be repaired. Thanks to the progress of science and technology, we have been given a convenient and practical home washing machine. Introduction to a thing Explanatory article 7

Onion is a very humble plant. It is so common and common, but its function is great and people like it very much.

this common plant can grow everywhere just like weeds. In order to facilitate picking, people always plant it on the wall, at the corner of the garden, in a dilapidated foam box … As long as there is soil, it can grow luxuriantly.

The lower part of the onion plant is milky white, but the upper part is turquoise. Its unique shape is always out of place with other plants. Its leaves are closed tubes with different lengths, but they are all very magical and have the function of regeneration. Every time you pinch off its upper body, in a few days, the broken part actually grows new green seedlings again, which is even more magical than magic.

The roots of the onion are milky white, thin and long, and deeply rooted in the soil. If it is uprooted, the soil will be pulled out with it, like a follower of onion, which can't be separated for a moment.

Although the onion is unremarkable, it can be found in all kinds of delicious food, and the chopped green onion, egg and scallion cake are fragrant. Sprinkle a handful of chopped green onion on the ribs soup; Braised fish are decorated with onions ... As far as I know, the reason why onions are added to these foods is because onions can refresh and make the food more delicious and beautiful.

This is the onion, an ordinary plant, which helps people create delicious food although it is inconspicuous and unsightly. They are endless, emitting fragrance with their own bodies and serving our beautiful life. I read the truth of being a man from the onion. We can't be decent people who are useless to others. Introduction to something 8

Animals have different tails, long, short, thick and thin ... all kinds, and their functions are different, some can keep balance, some can master the direction, and some can repel mosquitoes.

The kangaroo's tail is about 12 cm to 13 cm long. Its tail is about the length of a skipping rope. When resting, this tail can support the body, and when jumping, it can help it jump more than 1 meters. And when in danger, kangaroos can also attack enemies with their tails.

the gecko's tail is slender. When it is pulled by external force or encounters enemy harm, the tail muscles will contract strongly, which can make the tail break off immediately and save its life in danger. Its tail plays an active role in vertical climbing and sliding, and can also store fat.

The tail of a fish is as important as the rudder on a ship. It is necessary to master the direction and speed by its tail when swimming. Tuna, on the other hand, is the fastest in the ocean. It can reach 7 kilometers per hour, which is similar to the speed of a car.

The tiger's tail is colorful and very beautiful. From a distance, it looks like a yellow and black ribbon. But when this tail is put on the tiger, it becomes a hunting weapon. The bones in the tiger's tail are so hard that they can be used as whips, which are about half a meter long. If you hit them at once, you can directly pull off the spine of small mammals.

The leopard's tail looks like a yellow scarf. Leopard is famous for its fast running speed, and its explosive power can soar its own speed to 3 kilometers per hour, which is faster than ordinary cars. The role of the tail will be reflected. Its tail can help maintain balance. If a leopard breaks its tail, it may starve to death because it can't run fast, resulting in no food.

Animals' tails are really strange, and there are many mysteries of nature waiting for us to explore! Introduction to a kind of thing 9

Today is a special practical lesson-coffee.

The color of raw coffee beans will change with the picking time, luster and water content. Generally, it is cyan, and some are whiter. As raw beans are roasted and fried into our common brown coffee beans, gently bite a little and taste it. The taste is slightly bitter, but the bitterness recedes and gradually becomes a little sweet.

the packaging of coffee beans is also very distinctive. There will be a few small holes in its outer packaging bag. The teacher said that these are vent holes, which are used to prevent moisture. The taste of coffee beans and the factory date when the coffee beans are made are also indicated on the packaging bag.

next, it is the process of making hand-brewed coffee. First, we have to grind coffee and grind coffee beans into powder. In the process of grinding, we used a manual bean grinder, which was very difficult to grind at first, and gradually became very easy. After the beans are ground into powder, put the coffee powder into the filter cup, then slowly pour in warm water, and slowly leave the water from the filter cup into the coffee cup.

After finishing, the teacher poured some coffee juice into each of our cups for us to taste. I tasted it and felt bitter to death, but gradually the bitterness became sweet, which made me want to drink a few more mouthfuls ...

This is coffee, just like the coffee of life. Introduce a kind of things. 1

Bookmarks can help people remember where all kinds of books are, and can also be used for decoration. With them, people can read more conveniently.

Making bookmarks can be divided into the following steps:

Step one, prepare white paper, colored lead, sequins of various shapes, pencils, ribbons or thinner textiles.