-
Science and technology are the primary productive forces, and the development of productive forces is the fundamental driving force for the development of human society.
1. The use of natural fire is the first milestone for the evolution of Australopithecus into apes.
2. Drilling wood to make fire, completing the evolution from ancient apes to apes.
3. The use of stone tools and the manufacture of stone tools opened the door to the transition from apes to humans, and apes finally became humans, and humans became masters of nature. Humanity entered the Paleolithic and Neolithic periods. With surplus products, with commodities and commodity exchange, with commerce, humanity enters class society.
Enter a primitive society.
4. Since mankind mastered the smelting technology of bronze and iron, it has greatly liberated the social productive forces, promoted human society into the metal age, and made human beings enter the slave society and feudal society.
5. The invention of the steam engine once greatly liberated the productive forces, enabled mankind to enter the industrial revolution and the era of large-scale machine production, and produced the great modern productive forces of capitalism, which inevitably required the establishment of capitalist production relations, and the bourgeoisie overthrew the landlord class and established the capitalist social system.
6. The invention of gunpowder enabled human beings to split mountains and open roads, build bridges, and build, and promote the great development of various undertakings. The rapid development of the military industry has enabled mankind to enter the era of hot weapons from the age of cold weapons.
7. With the advent of papermaking and printing technology, human beings have the conditions for writing, and have promoted extensive exchanges in culture, art, language, science and technology, economy, etc.
8. The creation of the compass promoted the development of navigation and the completion of geographical discoveries. Mankind has come to know the earth.
9. The scientific and technological achievements of hybrid rice and super rice have greatly increased grain production and solved the problem of feeding the world's population.
10. The invention of electricity has enabled mankind to enter the age of electrical appliances and once again stimulated the tremendous development of productive forces. Bring light to the world.
11. The discovery of radio waves has led to a series of major inventions, such as the popularization of television, mobile phones, etc., which have greatly enriched the material and cultural life of the people.
12. The creation of computers has brought the world into the information age and shortened the distance between the world.
13. The successful development of satellites and spacecraft has enabled mankind to leave the earth and develop space. Make the earth smaller and smaller.
14. The successful development of China's parasitic satellite and other anti-satellite satellites has made mankind face a space war.
15. Genetic engineering should bring human beings to the era of Cologne.
The above examples are for reference!
-
Choose the first one, this one is better, is there no restriction on the style?
The first one can be written as a ......
-
When psychological warfare is underway.
Fight! I forgot to bring my gun! Listening to the ridicule of my classmates in the classroom, my heart became even more cramped and uneasy. Isn't it? The examination room is like a battlefield, and the score era of "people are in chaos" and "divided into 'fire and smoke", isn't it terrifying?
No, the exam has begun, and the majestic "commander" ordered the "young generals" to obediently stand by and distribute a brand-new "**".Paper. "Alas!
After complaining bitterly, I browsed the test papers, and there were no English essay questions, which was a very happy move. I didn't think much about it, so I hurriedly picked up my pen and started to "fight".
Call? When I was done, I stretched out and began to "collect the bodies" of the "young generals" who had "failed miserably" under my command. After the review is completed, there are no loopholes, and there is still no problem after re-examination.
Xin An'an picked up the notebook and drew the clown. Boil! Hopefully!
I want to wear it! When class finally ended, I handed in the test papers, went straight to the crowd, and began to discuss whether the test questions were correct or not. "Oh!
Wrong, wrong! "Yay! That's right, that's right!
From time to time, there were sighs of chagrin and cheers of joy from the crowd. I hurriedly left, so as not to affect my mood after knowing what was right and wrong. Don't be like Cheng Cheng who is so happy that he screams wildly, and don't be like Li Jia, who is depressed and can't lift his spirits.
The English test paper I was holding turned into a Chinese test paper in a trance, and in a daze, it seemed that a world had passed. Write it! Tu!
Write it! Change! After repeated "graffiti", the Chinese test paper was successfully completed.
The people's hearts gradually settled down, but when they saw the iron-clad faces of the two "commanders", they had to bury their heads in the inspection.
Hey! What for? "The math teacher caught a cheater on the spot, alas! Poor thing! After a burst of fractions, decimals, and natural counts, I was already dripping. Hopefully, the results won't bring tears to my eyes.
In my spare time, I also filled in the first word:
I look forward to the exam night and night, and the holidays will follow. But things are not related to people, and the exam is actually panicked. Remember, remember, to prepare well for the exam.
-
Last night, my mother and I went to my aunt's house, and my aunt's house is so big! There are a lot of rooms, up and down two floors, the only bad is to live on the 6th floor, climb to the door of my aunt's house are tired, my mother said: It's rare to climb the stairs to exercise like this, my mother is more difficult than me, out of breath and said:
Baby, I'm exhausted.
There are a lot of things in my aunt's house, and the furnishings are very neat, and the first cabinet when I come in is full of snacks and a lot of old antiques. When I changed my slippers, I suddenly realized that there were no sizes I was wearing, and they were all worn by adults.
After a hearty dinner at my aunt's house, we chatted and watched TV. I couldn't sit still after watching TV, so I got up and went upstairs to take a look, my aunt's daughter Tingting's sister immediately stopped me and said: Bei Bei (my nickname is Bei Bei) can't go upstairs to the room on the left, I said why, my sister said:
Because there is a dog there, you come to my house for fear that it will bark unfamiliarly, so I didn't let it out today, the dog will be a little unhappy, and it is easy to bite. I was frightened and hurriedly went downstairs, still sitting on the sofa in the living room watching TV.
After a while, my aunt asked me and my mother to go upstairs to see the clothes I was wearing (clothes that my sister Tingting couldn't wear). Upstairs on the left, I happened to see the white dog in the cage. It turned out that the little aunt called it Coco, and it was a pretty big dog.
Mom was going to help me look at my clothes, so I didn't have time to look at the dog. We went upstairs together, the upstairs is also very big, the staircase living room has a mahjong machine, there is a leather chair coffee table, there is a big amethyst in the corner, there are 4 in total, the color is so different, so beautiful.
We walked to the wardrobe room, and as soon as we entered the door, there was another fragrance, and my aunt said: This is a wardrobe made of camphor wood, and even the clothes are fragrant. My mother and aunt carefully selected bags of clothes for me and went downstairs, it was not early, and I still had school tomorrow, so I had to go home early to go to bed.
Then we reluctantly said goodbye to my little aunt and sister Tingting. My aunt's family is so rich!
-
Dizzy! If I hadn't done the task, I wouldn't have to...
I went on a journey to the Silk Road in Xinjiang.
Why should Qiang Di complain about the willows, the spring breeze does not pass the jade gate. "As early as a child, the barren northwest was deeply imprinted in my mind, and now, I finally want to go with my parents to enjoy the scenery of the Silk Road in Xinjiang.
Uyghur songs and dances are well-known throughout the country, and when we arrived at Grape Valley, several brightly dressed Uyghur girls were dancing. Beautiful faces, graceful postures, and moving dances, accompanied by the exotic **, dance into our hearts. Since you have arrived at Grape Valley, you naturally want to taste the sweet grapes of Xinjiang.
The grapes are round and large, with a green coat, and the bunches hang on the vines, which look very attractive! In front of the food, we naturally had a big meal, and our stomachs were round.
Another place that I remember the most is the Flaming Mountain. The Flaming Mountain, worthy of its name, has a maximum temperature of more than 70 degrees. The tour guide said to take an egg and bury it in the sand, and it will be cooked after a while.
As soon as I entered the Flaming Mountain, a heat wave rushed to my face, and when I looked up, a tall thermometer stood on the Flaming Mountain**, which showed 74°. "Oh my God" companions couldn't help but marvel. Dad bravely rushed over, slapped a **, and hurriedly ran back, and raised the soles of his feet for fear of melting the leather shoes, and we laughed when we saw it.
For seven days, we only spent seven days in Xinjiang, and until we boarded the plane, I still missed this beautiful land. Ah, what a short seven days, and what a beautiful seven days.
ps: It should be okay, I'm also driven out = =
Ask yourself (ask him) why he won't die for you? If that's what your addendum says, I think he loves himself more than you! >>>More
I just made it, if there is anything that needs to be modified, you can see and change it yourself! >>>More
20% = 480 (hectares).
6 (1+ (apple) grapes). >>>More
Normally, you should take some medicine and it will be fine in a few days, but if it is still in this situation for a long time, I advise you to tell your family and ask for the opinions of adults, if it really doesn't work, you must go to the hospital for a check-up. Don't believe in eating food in a mess, but believe in actual medical technology.
Take a deep breath, take a deep breath again.
Relax, get pregnant, have a good rest, and go online to scold. >>>More