The sixth grade math problems 1. The library bought 240 science and technology books, 20 more than 2 / 5 of the literature and art books. How many literature and art books? 2. A passenger train from Beijing to Shanghai runs 90 kilometers per hour, and a train from Shanghai to Beijing runs 80 kilometers per hour. After 8 hours, the distance between the two trains is 100 kilometers. How long is the railway from Beijing to Shanghai?

The sixth grade math problems 1. The library bought 240 science and technology books, 20 more than 2 / 5 of the literature and art books. How many literature and art books? 2. A passenger train from Beijing to Shanghai runs 90 kilometers per hour, and a train from Shanghai to Beijing runs 80 kilometers per hour. After 8 hours, the distance between the two trains is 100 kilometers. How long is the railway from Beijing to Shanghai?

1. (240-20) / (2 / 5) = 550 copies
2. (80 + 90) * 8 + 100 = 1460km

An excellent composition of 200 words

Dad's hobby is neither smoking nor drinking, but collecting beautiful stamps
After dinner, my father couldn't wait to take out a large and thick stamp album, sat down under the lamp and read it with relish. I often looked over my head and looked carefully. My father often said to me, "look, these are the stamps of the Chinese zodiac, and these are Guilin landscapes, and there are many people, animals, and scenes in the story..." Every time I am dazzled, as if I have been brought into the hall of stamps. Maybe the colorful, exaggerated and various stamps attract me like magnets. Gradually, I fell in love with these stamps and began to collect them
Dad cherishes stamps very much. Once, I felt bored at home alone, so I took out my dad's stamp album and looked through it page by page. Suddenly, I was attracted by a beautiful stamp. This is a monkey's stamp last year. There is a lovely black monkey on it. It has a big mouth and ears. It's smiling. It has a peach in one hand and a naughty hand on its head, That's interesting! Dad said that this is the third set of monkey tickets. This one is the most interesting one for him At this time, I was a little thirsty, so I went to pour a glass of water. Unexpectedly, the wire tripped me, and the water in the glass spilled out, and some water fell on dad's stamp album. "No!" I yelled, and immediately wiped the water with paper. Ah, the stamps were wrinkled. I immediately put the stamp album away, thinking: what can I do? After dinner, dad looked at the stamps again, Soon he frowned and said angrily, "who made it?" and then he glanced at me. I had to admit it with hesitation. At that time, my father was angry and widened his eyes. I was very scared
From then on, my father made a rule for me. If I want to read the stamp album in the future, I must get his approval. Do you think my father is a "stamp fan"?

Excellent composition after reading, more than 100 words, less than 200 words

Teahouse: after reading the book teahouse, we chat with each other about the classic of mountains and seas. Who can think that it can reflect a major social problem! Unless a master with a unique perspective makes it "live", the teahouse is mediocre and never has a deeper meaning. And that person is Lao She, a language master, who uses his unique

200 words excellent composition on scenery
Old rush! Old rush! La la la la la la!

Autumn is the harvest season. Soybeans, corn, sorghum are mature and tired
Autumn sky is very high, as if Pangu is still supporting the sky and the earth; the sky is so blue, as if a painter painted blue in the sky
Poplar leaves a little yellow, autumn wind blowing, poplar wobble, as if it has been old, unstable
The crops are happy, because they all bear fruit, and they are talking about: "you see, how big the fruit I bear, I can rank first in the crops!" "you see, the fruit I bear is not worse than you." the crops bear rich fruit, leaving sweet to people, but they are gradually yellowing and aging
In the campus lawn, the grass sneaked out, just like putting a green military uniform on the earth; the beautiful teaching building quietly said to me: "I'll shelter you from the wind and rain, you should study hard." the surrounding scenery seemed to say to me: "we all have achievements, do you have them? Let's compete!"
Only the willow girl bowed her head and said nothing. She was very sad and sad. The crops comforted her one after another: "although you have no fruit, you have a beautiful figure. You bring beauty to people." finally, the willow girl laughed
Autumn is beautiful, I love autumn!