I live in - composition more than 600 words, the best is that I live in happiness

I live in - composition more than 600 words, the best is that I live in happiness

300-400 words of composition about mopping the floor

Description of the landscape of the composition 300 words fast urgent!

I've long heard that the scenery of Guilin is very beautiful. Last May Day, my mother took me to Guilin. I'm very happy! We arrived in Guilin by train. Guilin is our dream city. Guilin is full of osmanthus trees. Osmanthus flowers and osmanthus fragrance. This is the origin of Guilin. As the saying goes, "Guilin's landscape is the best in the world". Indeed, today, I'm lucky to unveil the true veil of Guilin, Guilin has four wonders: clear mountains, beautiful water, grotesque caves and beautiful rocks. Here are just three major landscapes: green mountains, green water and caves. First of all, we come to the elephant trunk mountain and Diecai mountain. The elephant trunk mountain is above the Lijiang River, which is the city emblem of Guilin. At the bottom left of the mountain, there is a cave, It is made up of elephant's trunk and left front leg. The posture of the mountain is just like an elephant sucking water in the river. When the Lijiang River is full, it floats on the river like a full moon, sparkling. Beside the elephant trunk mountain, there are many scenic spots, such as love Island. Diecai mountain is a scenic spot in Guilin, including Yuyue mountain, Siwang mountain, Mingyue Mountain and Heshan mountain, It is said that people who can climb to the top of the mountain in one breath can live to 130 years old, and those who can climb to the wind cave in the middle of the mountain can live to 99 years old. The cave in the middle of the mountain is called "Taiji Pavilion", and the cliff statues and stone carvings are good places for tourists to watch, with high artistic value, Guilin city has a panoramic view: Lijiang River, Jiefang Bridge, Zhongzheng bridge, Fubo mountain, Xiangbi mountain, etc. can be clearly seen. No wonder the ancients called this "scenic spot of rivers and mountains". On May 3, we took a boat ride from Yangshuo to Yangdi for more than 4 hours to swim upstream and visit Lijiang River. Lijiang River is the main stream of the Pearl River, with a total length of 437 kilometers, It's like the boundless white "prairie". The mountains are overlapping, the water is like a mirror, the mountains are floating, and the reflections are graceful. The scenery on both sides of the Strait is like a hundred mile gallery. The main scenic spots are: screw mountain, jiuma painting mountain, yellow cloth reflection, etc, In the morning, at noon, and at dusk, there are various postures, especially Guilin in the rain. People say, "Guilin is the most beautiful in the rain." we just happened to meet the Lijiang River in the rain, In a short time, it began to rain heavily. The rain lasted more than half an hour, and finally stopped. After the rain, the sky was clear, the sun was smiling, the air was fresh, and there was a layer of gauze like rain and fog floating on the river. At this time, the landscape had a hazy beauty. Jiuma painting mountain is a famous mountain in the Lijiang River, with cliffs standing on the river and rock corridors showing many levels. The dark lines and color changes, It's like there are nine horses on the wall. Our beloved Premier Zhou and General Chen Yi once visited here, and visitors had to count them one by one. On May 4, we went to ludiyan. Ludiyan, located on Guangming mountain, 7 kilometers northwest of Guilin City, is named for its reed grass. It is an underground karst cave, 240 meters deep, 500 meters long and 90 meters wide, In the cave, stalactites, stalagmites, stone tents, stone curtains and stone flowers are exquisite and colorful. For example, "melon and vegetable harvest" and "baojingzhao centipede". On the "melon and vegetable harvest", there are "melon, fruit and vegetable" shaped like beans, watermelon, loofah and cabbage. Baojingzhao centipede "is a stone like a mirror shining a centipede, The look and image of Guilin's mountains and waters are very lifelike. One of the characteristics of Guilin's mountains and waters is that they are divided into three parts: original shape, seven parts: imagination. The more you think about them, the more you think about them, the more you don't think about them. Therefore, they form a magnificent "Palace". There are many scenes in the cave, The scenery is magnificent and beautiful Guilin is famous all over the country and even the world. It has eight mountains, one water and one field, two rivers (Taohua River and Lijiang River), four lakes (Shanhu lake, Ronghu lake, Xihu Lake and Guihu Lake, which have been artificially filled at the foot of Diecai mountain) and one road (Zhongzheng Road). The wind and scenery are extremely beautiful. It is worthy of the title of "Guilin's landscape is the best in the world, Yangshuo's scenery is the best in Guilin, No mountains, no water, no mind. "And" walking in Guilin, people in the painting. "

On the simplification of the absolute value of rational numbers (with answers)
If it's OK, I'll offer a bonus

Ask
It is known that | A-2 | and | B-3 | are opposite to each other
answer
. A-2 must be greater than or equal to 0. B-3 must be greater than or equal to 0
There is only one case: both are 0
So, A-2 = 0, B-3 = 0;
So, a = 2, B = 3; the answer is 2 / 9
ask
It is known that a is a positive number, a and B are opposite to each other, 2A + B = 6|
answer
Because a is positive, B is negative
So 2A + B = 6 can be expressed as an equation about a, that is:
2a+(-a)=6
The solution is a = 6
So B = - 6
So 1 / 3 (a + 5 b) = 1 / 3 (6 + 5 × 6) = 1 / 3 × 36 = 12

The US "Kennedy" aircraft carrier is equipped with an ejection system to help the aircraft take off. It is known that the maximum acceleration of the "F-15" fighter when accelerating on the runway is 5.0 M / S2, and the minimum take-off speed is 50 m / s. The ejection system can make the aircraft have a maximum speed of 30 m / s, so how long can the aircraft take off when accelerating on the runway at least?

Let the initial velocity of the aircraft be V0, and the acceleration a and the final velocity V of the aircraft are known. From the velocity time formula of uniform variable speed linear motion, v = V0 + at solution: T = V − v0a = 50 − 305 = 4S answer: the aircraft can take off only after accelerating at least 4S on the runway

Eight times of a number plus five times of it equals 169. Find the number
Solve by equation

Let this number be X
8X+5X=169
13X=169
X=13

How to use a newspaper and some glue to make the strongest paper bridge!
Use a newspaper and some glue to make the bridge. It's more than 12cm wide and 38cm high. It can't be used more!

Triangle support is the most stable

The equation (m-1) x ^ - 3 = 0 of X is a linear equation of one variable
(1) Then m, n should satisfy the condition m -, N -;
(2) If the root of the equation is an integer, find the value of the integer M

Wrong title~

A. The distance between B and B is 360 km. At 9 a.m., a and B depart from AB and run opposite to each other. At 11 a.m., the distance between B and B is 120 km and at 12 noon
Car a travels 90 kilometers more than car B. how much is the speed of car a and car B respectively? Use the equation of one yuan to solve the county emergency

(360-120) △ 2 = 120 km / h
Let a speed x km / h and B speed 120-x km / h
3x-3(120-x)=60
3x-360+3x=60
6x=420
x=70
B 120-70 = 50 km / h

Given the square of a + AB = - 5, the square of AB + B = 7, find the square of 2A + 3AB + B

a²+ab=-5 (1)
ab+b²=7 (2)
(1)×2+(2)
2a²+2ab+ab+b²=-10+7
2a²+3ab+b²=-3