Trong thí nghiệm giao thoa Young với ánh sáng đơn sắc trong chân không, khoảng cách giữa hai khe Young là 0,5 mm, khoảng cách từ mặt phẳng chứa hai khe đến màn quan sát là 1 m. Người ta đo được khoảng cách giữa 5 vân sáng liên tiếp là 4 mm. Bước sóng ánh sáng dùng trong thí nghiệm là

He was so lazy that he never washed his clothes by himself.

Thời gian của một chu kỳ tế bào được xác định bằng thời gian nào?

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 .

Read the following leaflet and mark the letter A, B, C or D on your answer sheet to indicate the option that best fits each of the numbered blanks from 7 to 12.

Boosting Your Confidence

Looking to improve your self-esteem and feel more confident in your daily life? Here’s how you can make positive changes!

Confidence Facts: Studies show that only 35% of people report feeling confident in their abilities, while others ___(7)___ with self-doubt. Building confidence can help improve your performance at work and in social situations.

Tips to Boost Your Confidence:

● Set realistic goals! Start small and ___(8)___ yourself when you reach milestones.

● Surround yourself with positivity! Seek ___(9)___ supportive friends and colleagues to boost your self-esteem.

● Focus on your strengths! ___(10)___ dwelling on mistakes, concentrate on what you do well.

● Practice self-care! Taking time for yourself can ___(11)___ your mood and confidence levels.

● Keep learning! Gaining new skills helps ___(12)___ a sense of accomplishment.

Cho tập hợp A = $\{x \in \mathbb{N}$ | $x$ là ước chung của $30$ và $54\}$. Tập $A$ viết bằng cách liệt kê các phần tử là

Chủ thể tiêu dùng cần phải có trách nhiệm gì khi tham gia vào hoạt động kinh tế?

Read the following passage about Key to Addressing Poverty, Gender Disparities, and Environmental Challenges and mark the letter A, B, C or D on your answer sheet to indicate the option that best fits each of the numbered blanks from 18 to 22.

Social issues are problems that affect a large number of people in society, often creating inequality and hardship. One of the most significant social issues today is poverty. (18)_________, such as food, shelter, and education. In many parts of the world, (19)_________, with families trapped in a cycle of deprivation. While poverty is a complex issue, it is often connected to factors like unemployment and lack of access to education. These factors make it hard for individuals to escape the cycle and improve their lives. To address poverty, governments and organizations must create sustainable policies that focus on education, healthcare, and employment opportunities.

Another pressing issue is gender inequality. In many countries, women still face discrimination in areas like employment and education, limiting their opportunities for personal and economic growth. Even in developed nations, women earn less than men for doing the same work. (20)_________, as people demand equal rights and opportunities for all genders. Moreover, gender inequality can also affect women's health and safety, (21)_________.

Finally, environmental degradation, like pollution and climate change, is a growing global concern. Environmental damage, (22)_________, especially in poorer regions, often affects them the most. The increasing frequency of natural disasters, caused by climate change, is also putting immense pressure on vulnerable populations. Tackling these issues requires a collective effort from both individuals and governments. Only through cooperation and sustainable practices can we hope to create a more equitable and livable world for future generations.

GNI/người phản ánh điều gì?

Miền Tây Trung Quốc có thế mạnh nào sau đây để phát triển lâm nghiệp và chăn nuôi?

Nucleotide là đơn phân của hợp chất hữu cơ nào?

Những bào quan nào sau đây có ở tế bào thực vật, không có ở tế bào động vật?

Cho hai tập hợp $A=\left\{ 1;2;3 \right\}$ và $B=\left\{ 1;2;3;4;5 \right\}.$ Có tất cả bao nhiêu tập $X$ thỏa mãn $A\subset X\subset B?$

Trong không gian Oxyz, cho đường tròn \((C)\) là giao tuyến của mặt cầu \((S):x^2 + y^2 + z^2 = 4\) và mặt phẳng \((P): 2x+y-2z-3=0\). Xét mặt cầu \((T)\) đi qua \((C)\) và tiếp xúc mặt phẳng \((Q): 2x+y-2z+1 = 0\). Tính bán kính của \((T)\). Làm tròn kết quả đến hàng phần trăm.

Tất cả các Viện kiểm sát do ai lãnh đạo?

Việc đẩy mạnh các chính sách an sinh xã hội giúp cho người dân khắc phục khó khăn do dịch bệnh COVID - 19 thể hiện Nhà nước ta đang thực hiện chính sách đảm bảo quyền của công dân trong lĩnh vực gì?

Hàn Mặc Tử mắc bệnh hiểm nghèo năm bao nhiêu tuổi?

a. Sarah: Not every night, but we try to eat together on weekends. It's nice.

b. Emily: I agree. My family always eats dinner together.

c. Emily: Do you have dinner with your family every night?

Hiến pháp năm 2013 khẳng định nền kinh tế Việt Nam có những đặc điểm gì?

Hệ thống ngân sách nhà nước gồm mấy bộ phận chính?