The history of the development of the saxophone!! Can anyone tell us about that!! Thank you

Saxophone is the one, isn't it?

The China Science and Technology Museum is a public institution directly under the China Association for Science and Technology and the only national comprehensive science and technology museum in China. It is a basic science popularization facility for implementing the strategy of rejuvenating the country through science and education and improving the scientific and cultural literacy of the whole nation. The first phase of the project was completed and opened on September 22, 1988, and the second phase of the project was completed and opened on April 29, 2000.

The main form of education in the China Science and Technology Museum is exhibition education, which reflects scientific principles and technical applications through scientific, knowledgeable and interesting exhibitions. The China Science and Technology Museum encourages the public to explore and practice, not only popularizing scientific knowledge, but also focusing on cultivating scientific thoughts, scientific methods and scientific spirit of the audience.

Following the purpose of science popularization and the commitment of "ensuring safety and quality service", the China Science and Technology Museum has actively carried out a variety of science popularization activities, and has been rated as "National Advanced Collective of Science Popularization", "Model of Capital Civilized Unit", "National 4A-level Tourist Attraction", "Capital Civilized Tourism Zone" and "Youth Civilization".

The China Science and Technology Museum is currently open to the audience in three venues - Hall A (permanent main exhibition hall), Hall B (dome screen theater) and Hall C (children's science park and temporary exhibition hall).

The new China Science and Technology Museum is a large-scale popular science education venue invested and built by the first during the "Eleventh Five-Year Plan" period. The new hall is located in the National Olympic Park, adjacent to the Asian Games residential area in the east, the Olympic water system in the west, the main Olympic stadium in the south, and the forest park in the north, covering an area of 10,000 square meters, with a building scale of 10,000 square meters, which is one of the relevant ancillary facilities of the Beijing 2008 Olympic Games, and is an important part of the three major concepts of "Green Olympics, Humanistic Olympics and Science and Technology Olympics".

The new building is jointly designed by the Beijing Architectural Design and Research Institute and the United States RTKL International ****, the main body is a single square with a large amount of integration, it combines the characteristics of ancient Chinese scientific thought and modern science and technology museum, and uses a number of building block-like blocks to bite each other, so that the whole building presents a huge Luban lock shape, which embodies the intrinsic connection between man and nature and science and technology, and also symbolizes that science has no absolute boundary, and disciplines integrate and promote each other.

The new building will be completed before the 2008 Beijing Olympic Games, and the construction of the new hall will be carried out at the same time as the construction of the project, and the exhibition will be concentrated after the Olympic Games. In 2009, a new museum with a prominent theme, complete functions and the world's advanced level will be presented to the public.

The construction of the new museum is another milestone in the development of China's science and technology museum, and it is also a major event in China's science popularization, which will play a positive role in enhancing China's science popularization capacity, improving the scientific quality of citizens, implementing the national strategy of rejuvenating the country through science and education and strengthening the country with talents, publicizing the scientific concept of development, and building a socialist harmonious society.

At the same time, the new China Science and Technology Museum, which has been completed and opened, will also play a demonstration and driving role in the construction of domestic science and technology museums.

Soldiers are also human beings, and they eat the same as everyone else. It's just that there are food reserves, and the amount of reserves varies depending on the level. For example, units below the regimental level usually have 7 days of reserves, which are kept in their own warehouses.

Army-level units are served for two days and are placed in the warehouse of the material support brigade of the group army. The types of food are divided into staple foods and non-staple foods, which are changed regularly according to the expiration date. Sometimes you can see so-called military canned food.

Try not to eat it, there are generally preservatives there, no way, there is no other way to ensure the need for the time being. As harmful as it is, it's better than starving. In the past, I thought it was good to mention military food.

That's because I'm poor and can't fill my stomach.

Nine years old is still early? Nine years old is the best age to learn the saxophone, I have a certain understanding of the saxophone, I know what is good and what is not, there is no problem with my teeth, I will not be so difficult to carry the saxophone, and I also know how to maintain the saxophone.

You can learn it, but you have to use a children's saxophone, and it's best to go to any teacher and test your learning ability.

You can learn, there are so many teachers in Xinghai Academy, although it is a little expensive, it is worth the money. Find out for yourself.

I have a student who studied with me at the age of 6 and a half, and he can be 9 years old, and he can have no dental problems.

The fingers are too short, the position is not good, the lung capacity is insufficient, and it is not easy to blow a song in a row, so it is recommended in the 3rd or 4th grade of elementary school.

Of course, Huai'an Children's Palace.

Schoolbag is an indispensable tool for students, it is said to be a tool, because it has many uses, a small schoolbag can be used to hold books and school supplies, but also to contain some bits and pieces, girls also like to put some of their secrets in it. Don't look down on this humble school bag, it can contain knowledge of literature and geography from ancient times to the present!

With the progress of society, the style of the schoolbag and the material of the schoolbag have undergone earth-shaking changes. When my older siblings went to school, they used the kind of military canvas bags with straddle flaps. When I first started school, I used a schoolbag sewn from bits and pieces of floral cloth, which was hand-sewn by my mother, which was very economical.

At that time, there were not many books, and the small cloth schoolbag contained only a language book and a math book, as well as a stationery box and a few homework books. When I was in the third grade, I was in the third grade, and my father also bought me a black diagonal flip schoolbag, which made me happy for several days.

The spring breeze of reform and opening up has blown all over the land of China, and with the spread of this spring breeze, the social economy has continued to develop, and people's living standards have become higher and higher, which is also reflected in the small schoolbag. Floral cloth schoolbags and leather schoolbags with monotonous colors and simple styles have become history. Instead, there are schoolbags with different styles and materials, and the one-shoulder straddle has become a backpack, and the colors of the schoolbags are varied, ranging from dozens to hundreds, and brand schoolbags have also appeared.

The functions of the schoolbag are increasing, the contents of the schoolbag are becoming more and more abundant, and at the same time, the burden on the shoulders of students is getting heavier and heavier.

The development of the schoolbag has a long history, since the Han Dynasty had a private school, the schoolbag also came into being, and the appearance at that time was a cloth bag.

Blow "Wedding Vow", it matches the occasion quite well.

Just blow it in the flat E tone:

1 2 1 3531 1 3 1 2 3 5 (bass).I won't write the rest of it, but I can write it myself.

Hehe, think about some songs that you are familiar with, you sing very well, and it is best to describe love slowly, such as "Love Network", Jacky Cheung, or other "A Curtain of Dreams" or something.

Start simple.

The moon represents my heart, this is not very difficult, everyone knows it, it is very good, the accompaniment is also relatively good, and it should be possible to practice for two days!