Khi ta thổi sáo diều, cột không khí trong ống sáo đã dao động, phát ra âm thanh

cột không khí trong ống sáo

Khi thổi sáo cột không khí trong ống sáo dao động phát ra âm

đăng kí học tiếng anh nhé

Đọc sách nhiều , học cách phát âm rồi phát âm đi phát âm lại

Nghe gg dịch nhiều hơn -.-

Tham khảo
Học cách phát âm tiếng Anh chuẩn

1) vật phát ra âm gọi là nguồn âm

2) khi phát ra âm, các vật đều dao động

3) nguồn âm là loa tivi

3) 

1)vật phát ra âm gọi là nguồn âm

2)khi phát ra âm các vật đều giao động

3)thì là loa tivi

4)thổi to không khì trong lá dao động mạnh hơn nên âm phát ra to hơn

uh

Hanoi is located in the center of the Red River Delta. It is one of the major economic, cultural and polial centers of Vietnam. When you come here, you will be surprised by the youthful and dynamic pace. The infrastructure is very morden and magnificent . Along the avenues, there are many buildings, shopping malls, administrative offices. Hanoi is also home to many prestigious and well-known universities in the country such as Foreign Trade university, Hanoi university of science and technology, National Economics university, etc. During the day, roads are full with vehicles and traffic congestion, especially is at rush hours, when students go to school and adults go to work. However, at night, Hanoi is more bustling than ever. All the way, the roof are in brightly colorful light, restaurants are on display. At this time, almost everyone has returned home from work, gathering at the edge of the family. After that, they together go shopping, to entertaiment centers and parks to relax after a hard-working day. With me, Hanoi is a great place to live and work. At night wandering in the streets of Hanoi, the smell of milk flowers along the roads makes the soul become strangely peaceful. In the near future, I will build up my own beautiful house there.

Hanoi is located in the center of the Red River Delta. It is one of the major economic, cultural and polial centers of Vietnam. When you come here, you will be surprised by the youthful and dynamic pace. The infrastructure is very morden and magnificent . Along the avenues, there are many buildings, shopping malls, administrative offices. Hanoi is also home to many prestigious and well-known universities in the country such as Foreign Trade university, Hanoi university of science and technology, National Economics university, etc. During the day, roads are full with vehicles and traffic congestion, especially is at rush hours, when students go to school and adults go to work. However, at night, Hanoi is more bustling than ever. All the way, the roof are in brightly colorful light, restaurants are on display. At this time, almost everyone has returned home from work, gathering at the edge of the family. After that, they together go shopping, to entertaiment centers and parks to relax after a hard-working day. With me, Hanoi is a great place to live and work. At night wandering in the streets of Hanoi, the smell of milk flowers along the roads makes the soul become strangely peaceful. In the near future, I will build up my own beautiful house there.

My hometown is Ha Noi where is the capital of Viet Nam. Now, I am living with my parent there. Ha Noi is the most special city with many famous places as Hoan Kiem Lake, The Old Square, The Ho Chi Minh Mausoleum,…In addition, people here is very kind and friendly

Hello, I want you to know my hometown. My hometown is too hot almost the entire year – about 33 degrees. So the nights are the good time to play. It’s nice to go to the restaurant, bar to meet friends and have a drink something. There are beaches here, beautiful beaches and I love to go swimming. Sometimes, I go out or just stay home and watch TV. People here are peaceful and friendly.

Tham khảo!

Em cần tránh các hành vi:

1) Đây là hành vi thiếu văn hóa, vi phạm đạo đức, chưa trung thực trong học tập, kiểm tra.

2) Hành vi này vi phạm đạo đức, thiếu văn hóa. Việc làm này vi phạm quyền riêng tư của người bạn nước ngoài và có thể ảnh hưởng quản hệ giữa hai bên.

3) Hành vi này vi phạm quy định của bảo tàng. Việc chụp ảnh trong bảo tàng mà không được phép có thể gây ra hậu quả nghiêm trọng. Nó có thể làm mất tính nguyên vẹn của tác phẩm, cũng như làm giảm giá trị văn hoá, có thể gây mất an ninh của bảo tàng Hơn nữa, việc đưa những bức ảnh này lên mạng xã hội có thể dẫn đến vi phạm bản quyền và pháp luật.