Elementary school students 'science and technology reading comprehension and answersThe following is an example of a technical reading comprehension and answer:
[Chang'e-5's sample collection mission]
The Chang'e-5 probe had a lot of innovation in the lunar sample mission. At 23:10 on December 3,2020, the Chang 'e-5 ascender ignited on the lunar surface. After the 3000 Newtons engine worked for 6 minutes, it successfully sent the ascender carrying lunar soil into the scheduled orbit around the moon, successfully achieving China's first extraterrestrial celestial body take-off.
After ignition and take-off, the ascender went through three stages: vertical ascent, attitude adjustment, and orbital injection, entering the scheduled lunar orbit. After that, they would rendezvous and dock with the orbital return assembly that was waiting around the moon, transfer the lunar samples to the returnee, and wait for the appropriate lunar entry window to return to Earth.
After the Chang'e-5 probe landed on the lunar surface, it carried out preparations such as unfolding the solar wings and unlocking the mechanism before entering the "digging" mode. The automatic sampling-task adopted the combination of surface drilling and multi-point sampling-mode. There were two modes: drilling with drilling tools and surface sampling-by-mechanical arm. These two modes were not carried out at the same time. First, the drilling mode was turned on. The drilling tool mainly obtained samples below the lunar surface. As of 4:53 on December 2, the Chang 'e-5 lander and ascender combination completed the lunar drilling, sample collection, and packaging. Then, the robotic arm surface acquisition device began to work, mainly to obtain lunar surface samples. As of 22:00 on December 2, after about 19 hours of lunar surface work, Chang'e-5 successfully completed the automatic lunar surface sample collection and stored the samples in the storage device carried by the ascender in a predetermined form. In order to ensure that the lunar samples remained vacuum sealed and unaffected by the external environment during their return to Earth, the probe sealed the samples on the lunar surface.
The lander carried equipment such as drilling and collecting devices, surface collecting and collecting devices, surface collecting primary packaging devices, and sealing devices to complete the sample collection mission. The robotic arm was similar to a human hand, and there were two samplers like shovels on the wrist joint. The drilling tool could drill into the moon to drill the lunar soil core. They cooperated with each other to collect lunar soil samples and seal them. It had been more than 40 years since humans last took samples from the moon. The study of lunar soil not only involved the moon itself, but also included important information about the space materials and energy of the solar system. Sending samples such as lunar soil back to the ground laboratory for analysis and research would help to further understand the state of the moon, temperature, material content and other important information, and deepen the understanding of the formation and evolution of lunar soil, lunar crust and the moon.
** Question and Answer: **
1. What was the method of the Chang'e-5 probe's automatic sample mission?
The answer was to use a combination of watch and diamond and multi-point samplings.
2. What was the difference between the drilling mode and the surface extraction mode of Chang'e-5?
Answer: The drilling mode was first activated, and the drilling tool was mainly used to obtain samples below the lunar surface. The surface extraction mode was then activated, and the robotic arm was mainly used to obtain samples on the lunar surface.
3. What equipment did the lander carry to complete the sample mission?
The answer was: drilling sample device, surface sample device, surface primary sealing device, and sealing device.
4. What did Chang'e-5 do to the samples? Why?
Answer: The sample was sealed. To ensure that the lunar samples were kept in a vacuum and unaffected by the external environment during their return to Earth.
5. What was the point of studying lunar soil?
Answer: The study of lunar soil not only involved the moon itself, but also important information about the solar system's space materials and energy. It was beneficial to further understand the state of the moon, temperature, material content and other important information, and deepen the understanding of the lunar soil, lunar crust, and the formation and evolution of the moon.
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What are the college students 'essay competitions?I can't provide complete information because the information about the college essay competition may change with time and place. However, the following are some known college essay competitions:
National College English Speech Contest (NOI)
National College Mathematical Modeling Competition
National College Student Electronic Design Competition
National College Physics Competition
National College Chemistry Competition
National College Student Humanities Quality Competition
National College Student Competition
China University MOOC-Cup Online Course Design Competition
In addition, there were many other specific information about the competition that could be found on the relevant official websites or consulted the teachers and students of the school.
What are the college students 'essay competitions?I can't provide any information about a specific university's essay competition because each university may have its own essay competition. You can search for the name of the university you are interested in to see if they have held essay competitions or ask the student organization or the admissions office about essay competitions.
Classics for Elementary School StudentsThe following are some recommended books on classical music for elementary school students:
- "Children's Classic Music Picture Book": by "Teacher Xiaolong Singing Classics", Chen Xiaolong, Associate Professor of the Central Conservatory of Music, Master of Music Performance and piano performance from Boston University in the United States, and the famous piano teacher Tian Yuan, who read aloud. Scanning the code to listen to the background music reading and all the songs. It was recommended by the National Press and publication Administration and won the German Golden Disc Award. It had been a global bestseller for 18 years and had sold more than a million copies of classical music. 16 classic and elegant classical music and stories such as Swan Lake, The Nutcricker, and A Midsummer Night's Dream were selected to give children a high starting point in music enlightenment. They were jointly recommended by famous people and could promote children's thinking activities.
- [My Little Music Master: suitable for 0 - 4 years old (can also be used as a reference for primary school students). There are five books in total.] The music in the book was longer and clearer. Combining the pictures on each page would allow the child to experience the music more deeply.
- "When Should I Applause?" This was a popular science book that could help you get started with classical music.
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Elementary School Students in MexicoMexican primary school students actively participated in various activities, showing enthusiasm and vitality for multiculturalism. In terms of language learning, many primary school students were keen to learn Chinese. For example, the children of Queen Elizabeth School in the south of Mexico City actively participated in activities such as speaking Chinese, singing Chinese, and writing Chinese on the occasion of "United Nations Chinese Day". They showed their talents and love for Chinese by writing calligraphy, playing paper-cutting, speaking Chinese tongue twisters, singing Chinese songs, and dancing the Northeast Two-person Rotation. The school was a private primary school in Mexico City. It had been teaching Chinese for many years and regularly organized various activities related to the China language and culture. The children loved China culture and were passionate about learning Chinese. At the same time, in the finals of the "Chinese Bridge" World Primary School Chinese Language Show in Mexico, 18 young contestants from all over Mexico participated in the competition. The theme of the competition was "Happy Chinese", which included three segments: Chinese speech, knowledge question and answer, and talent show. The young contestants 'fluent and enthusiastic Chinese speech and diverse talent show won the applause of the audience. In the end, Frida Garcia from the Confucius Institute in Mexico City won the championship, Benjamin Miller from the Ica City School in Yucatan State, and Ana Claudia Peres from the QES School in Mexico City won the second and third place respectively.
However, elementary school students in Mexico also faced some dangerous situations. For example, there was a shooting incident at a primary school in Torreon. The murderer was an 11-year-old male student at the school. He shot with two guns, killing a female teacher, injuring five students and a physical education teacher. In the end, he committed suicide.
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100 words for elementary school studentsThere were many interesting things about primary school students. For example, she drank Snow beer as Sprite and cried because she thought it was expired Sprite. She pretended to sleep in class and was seen through by the teacher. The twins, Xiao Ming, teased Little Light to fall in the competition, but they also fell down. The girl read "Sandstone" as "Fried Rock" and so on. It was full of childlike fun.
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Elementary school students in kindergarten, middle school studentsThe kindergarten was a stage of pre-school education. This stage was extremely important for the growth of children. For example, it played a decisive role in building the structure of the child's brain nervous system. It also largely determined what kind of person the child would become in the future.
Primary school was a compulsory education stage, and it was also a part of primary education. This stage was the key period of education. While learning simple knowledge, one had to correct one's moral conduct and establish correct codes of conduct.
Junior high school was also a compulsory education stage and was also a part of primary education. This stage continued to play an important role in children's knowledge learning and moral cultivation. For example, further education was carried out on the basis of the early stage, laying the foundation for subsequent higher education.
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Elementary school students 'mathematics stumps graduate studentsThere were indeed some seemingly simple but confusing questions in primary school mathematics. For example, the problem of repairing bricks. The existence of half a brick might confuse the child. It was necessary to observe the arrangement of the bricks, first calculate the number of bricks in a complete row, then calculate the number of bricks in the empty row, and then use the number of bricks needed in each row to subtract the number of bricks in the empty row. Finally, the number of bricks in each row was added to get the total number of missing bricks. The question of knowing the direction was a test for the spatial thinking ability of the third grade children. When the spatial imagination ability was limited, they could use children's songs to remember the method of direction judgment. The process of solving equations using the properties of equations was long and tedious when they first started learning. Although the shifting method was short, it was easy to make mistakes. There were also calculation problems that included a variety of situations, such as the first grade addition and substitution calculation method, the memorization of multiplication pithy formula, and the proficiency in three-digit multiplication of one-digit numbers, two-digit divisions, decimals, and simple calculations.
In addition, questions like A multiplied by B equals 16, A multiplied by A equals 8, and B multiplied by B needed to be solved by finding the relationship between A and B. There were also controversial questions about the concept of repeating decimals, and different people would get different answers. These questions might be difficult for primary school students, but for graduate students, due to their long-term exposure to advanced mathematics knowledge, when faced with these questions with unique elementary school logic, they might also be difficult to answer.
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