Các lớp electron được đánh số từ trong ra ngoài bằng các số nguyên dương: n = 1, 2, 3,... với tên gọi là các chữ cái in hoa là

Một người nghe thấy tiếng sét sau tia chớp 5 giây. Hỏi người đó đứng cách nơi xảy ra sét bao xa? Biết vận tốc truyền âm trong không khí là 340m/s.

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the best answer to each of the following questions from 20 to 27.

Traditional Media

Before the invention of newspapers, the main source of news was word of mouth. Any writings and drawings were done by hand. Although printing presses had existed in eastern Asia, it was Gutenberg’s invention in Europe in 1453 that made printing faster and books more accessible. It reduced the cost and size of printed books and made them the first form of mass media affordable to less wealthy people. Gutenberg’s invention also quickened the spread of discoveries and information, and promoted literacy in Europe.

The printing press led to the rise of printed newspapers that appeared regularly. The first newspapers developed from around 1612 and in a short period of time, they became very popular in Europe and the European colonies. In the 19th century, they also appeared in Asia.

Newspapers and magazines are still very popular today. Although most of them have online versions, many people continue to read print media, which is considered more credible than digital media.

In the 1920s, when radio, television, and video were introduced, the phrase “the media” began to be used. Black and white television quickly became popular in the 1950s, and in the 1960s colour broadcasts started in many countries. Thanks to its audiovisual presentation, television became one of the most important forms of mass media in the 20th century. As a source of news, entertainment, and education, it still attracts a large number of viewers today.

(Adapted from English Workbook 12 – Global Success)

The word promoted in paragraph 1 can be best replaced by .

Nhiệt độ duy trì trong chuồng nuôi gà đẻ công nghệ cao là bao nhiêu?

Cho hàm số \(y=f(x)\) xác định, liên tục trên \(\mathbb{R}\) và có bảng biến thiên như sau:

Khi vật đang chuyển động thẳng, theo chiều dương, nếu đổi chiều chuyển động thì trong khoảng thời gian chuyển động ngược chiều đó đồ thị độ dịch chuyển – thời gian có dạng nào sau đây?

"Nam, nữ đều được bình đẳng trong việc tiếp cận thông tin, nguồn vốn đầu tư, thị trường". Đó là quy định pháp luật về bình đẳng giới trên lĩnh vực nào?

Mark the letter A, B, C or D on your answer sheet to indicate the best arrangement of utterances or sentences to make a meaningful exchange or text in each of the following questions from 13 to 17.

a. When families spend too much money on old school debt, they often cannot save enough for their children's future education.

b. Many young parents cannot buy homes because they still pay their college loans every month.

c. Although many millennials want to have children, they wait longer than their parents did because they worry about money problems.

d. The government should help young families by making college cheaper or by reducing the debt, which would help more people start families when they want to.

e. Some parents work two jobs so they can pay for both daily needs and their student loans, but they miss important time with their children.

Hình chiếu phối cảnh được xây dựng bằng phép chiếu:

Vì sao khi tăng nhiệt độ lên quá cao so với nhiệt độ tối ưu của 1 enzim thì hoạt tính của enzim đó lại giảm, thậm chí mất hoàn toàn?

Trong các chất: nhôm (aluminium), nitơ (nitrogen), oxi (oxygen), nước. Hợp chất là

Cho cấu hình electron nguyên tử của K là 1s²2s²2p⁶3s²3p⁶4s¹. Vị trí của K trong bảng tuần hoàn là

Trên hình chiếu trục đo, hệ số biến dạng theo trục O’x’ là:

Một vật đươc ném thẳng đứng lên cao từ mặt đất với tốc độ ban đầu 8 m/s. Lấy g = 10 m/s². Tốc độ của vật khi động năng bằng thế năng là

Nhận định nào sau đây là SAI khi nói về dữ liệu $39^\circ C$ trong bộ dữ liệu về thời tiết và trong bộ dữ liệu của bệnh án?

Chọn phát biểu đúng về chế độ dinh dưỡng theo giai đoạn vỗ béo của lợn thịt.

Cho hàm số $f\left(x\right)$, bảng xét dấu của $f\text{'}\left(x\right)$ như sau:

Số điểm cực trị của hàm số đã cho là?

Read the following passage about world festivals and mark the best answer to the questions from 11 to 18. 

     World festivals have a big impact on young people today. Festivals such as Christmas, Diwali, Halloween, and Chinese New Year are celebrated across the globe, bringing people together. Young people especially enjoy these events because they offer a chance to have fun, learn about different cultures, and develop a global mindset.

     Festivals help young people appreciate diversity. Attending a festival from another culture teaches them new traditions, food, music, and art. For example, attending the Rio Carnival or the Holi Festival of Colors can give young people an exciting experience of new cultures. They learn to respect and understand people from different backgrounds, which is important in today’s world.

     Another impact is that festivals allow young people to express themselves creatively. Many festivals include costumes, dances, and music that encourage self-expression. For instance, during Halloween or a music festival like Coachella, young people often wear creative outfits or costumes that reflect their personalities. This makes them feel confident and allows them to experiment with new styles.

    Festivals also offer opportunities for young people to connect with others. Meeting people at festivals, whether in person or online, helps them build friendships and networks. Social media plays a big role in this, as many young people post about their experiences, spreading awareness of the festivals they attend.

     Overall, world festivals provide many learning and social experiences for young people, helping them grow into more open-minded and creative individuals. 

Which of the following is TRUE according to the passage?