Composition of Chinese exercise 2, Volume 2, grade 4, Jiangsu Education Press

Composition of Chinese exercise 2, Volume 2, grade 4, Jiangsu Education Press

Because snow is silvery white, and snow is the symbol of winter, the symbol of winter. It is very familiar to northerners. But the snow just happened seems so strange, because it is the first snow of this year. The first snow of every winter makes people feel strange and friendly, but the first snow of this winter comes too early, It's not the same as in previous years. This snow makes people feel that autumn, the mature girl, seems to have left in a hurry as if she were going to a banquet before she stops in the prosperous city. She makes people unconsciously disappear before they are aware of her existence. Therefore, winter comes. Winter seems not energetic at all, No, sometimes the sun brings warmth to people, but in this season, the power of snow is better than the sun, because it is winter after all
In the early morning, I was surprised when I opened the curtain: it's a world of powder and jade, ice and jade, and silver. It's white everywhere. If you look at the snow carefully, it's hairy and shiny, and it's shining on the ground, so you have to squint to enjoy the magnificent snow scene. Now it's early winter, and a thin layer of snow is like a huge soft wool blanket, The path covered the courtyard. Obviously, the snow came to the world quietly from the world above the clouds in the middle of the night. The snow began to fall again. Small snowflakes floated down from the sky, like catkins, like reed flowers, like dandelion with fluffy seeds, flying in the air. The snow gently fell down. The bright little snowflakes opened all over the sky, I can't help but think of two poems: "suddenly, like a spring breeze, thousands of pear trees bloom." I put on my clothes and decided to go out to have a look: the ground is covered with thick snow. It's so white and pure that people can't bear to step on it. But a path has been stepped out in the middle, so I walked out of the yard Looking around, the trees have changed into white clothes, and the houses have put on new hats. The holly trees on the roadside are covered with white snow. Ho! The whole world is silvery white. The trees in the streets are covered with glittering snow. The willow branches are covered with hairy, shiny silver. The pines and cypresses are covered with heavy, fluffy snowballs. Rows of trees surround the road, Children chase and play in the trees, and bursts of laughter come with the wind. Gradually, the snow is falling more and more, and the wind is twisting the snow, and the sky is the same, and the wind and snow permeate the whole city. The snow puts on the spruce's white coat, and the spruce is warm; the snow puts on the new hat of the house, The house is beautiful; the snow has laid a long silver carpet on the earth, and the earth is sweet
Although snow brings inconvenience to people's travel, people still like snow because it is white and pure. I hope it will snow more this year, because I love snow

How to write a composition in the second volume of the fourth grade of Jiangsu Education Press!

Liu Xuehua of Gaocheng Central Primary School. 1. Textbook analysis: Exercise 1 requires students to write suggestions. Spring is coming. It is suggested that the class hold a spring outing. Where is the best place to go? Write your own opinions

Composition of exercise 7 in Volume 1 of grade 4

On Saturday evening, it was overcast and drizzled from time to time. A few swallows were playing carefree on the road. Suddenly, a truck roared past. My heart was tight and I couldn't help closing my eyes. I knew something unfortunate had happened The first natural paragraph can only be this topic. It's a scene that shocked me in the rain

After a 24 cm high rectangular block is cut into two cuboids with the same length and width at a ratio of 5:7, the surface area is increased by 100 square centimeters?

Cross sectional area = 100 △ 2 = 50 square centimeter
The height of the first block is 24 △ (5 + 7) X5 = 10 cm, and the volume is 50x10 = 500 cubic cm
The second block has a height of 24 ± (5 + 7) X7 = 14cm and a volume of 50x14 = 700cm3

The sequence {an} is an arithmetic sequence with non-zero tolerance, and A5, a8 and A13 are three adjacent terms of the arithmetic sequence {BN}. If B2 = 5, then BN = ()
A. 5•(53)n−1B. 5•(35)n−1C. 3•(35)n−1D. 3•(53)n−1

∵ {an} is an arithmetic sequence with non-zero tolerance, and A5, A8, A13 are the adjacent three terms of the arithmetic sequence {BN}, ∵ (A5 + 3D) 2 = A5 (A5 + 8D), ∵ A5 = 92d, ∵ q = A5 + 3da5 = 152d92d = 53, ∵ B2 = 5, q = 53, ∵ B1 = b2q = 3, ∵ BN = b1qn − 1 = 3 · (53) n − 1

The area occupied by the conference room is 240 (). A cubic centimeter B cubic decimeter C cubic meter D square decimeter
Occupied space

The area occupied by the conference room is 240 (d). A cubic centimeter B cubic decimeter C cubic meter D square decimeter
The answer should be square meters

Party A and Party B vegetables are transported to other places for sale. The relevant data are shown in the figure below. If 8 vehicles are used for shipment, at least two kinds of vegetables should be shipped
Party A and Party B
The quantity of vegetables that can be transported by each vehicle (ton) 1.5
Profit per ton of vegetables (RMB) 7000 5000
If 8 vehicles are used for shipment, at least 11 tons of two kinds of vegetables should be shipped to other places for sale, and each kind of vegetables should not be less than 1 vehicle, then how many vehicles are used for shipment of vegetables a and B? How to arrange for the maximum profit of the company? What is the maximum profit?

There are x vehicles equipped with armor and Y vehicles equipped with B
7≥x≥1 7≥y≥1
x+y=8
X + 1.5y ≥ 11 is substituted to get: 8-y + 1.5y ≥ 11, y ≥ 6
Profit: 700X + 5000 × 1.5y = 700X + 7500y ｛ y, the larger the profit is
∴y=7,x=1
That is: there is one armored car and seven vehicles equipped with B. at this time, the profit is the biggest, which is 59500 yuan

How many tons is a stone equal to

The weight of crushed stone is about 1.6 tons, which is related to the grading. The well graded one is a little heavier, and the poorly graded one is a little lighter

The solution of 5x + 8y = 51, Diophantine equation

X = （51-8Y）/5

A 343 cubic centimeter local wood block was cut into eight small cubes of the same size, and the surface area of each small cubewood block was calculated