Sóng dừng trên dây AB có chiều dài 32 cm với đầu A, B cố định. Tần số dao động của dây là 50 Hz, tốc độ truyền sóng trên dây là 4 m/s. Trên dây có

Liên hợp quốc không có nhiệm vụ chủ yếu gì?

Tiện ích nào bên dưới của Windows để quản lý tệp và thư mục?

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.

Eat Well, Live Well: Simple Steps for Better Health

Learn how small changes in your diet can make a big difference.

Common issues we face:

We tend to ___(7)___ too much sugar and processed food today, which can lead to health problems. Another challenge is finding time to prepare meals at home, causing a reliance on fast food. Over time, this habit increases the risk of obesity and ___(8)___ diseases.

What we can do:

● ___(9)___ on sugary drinks and replace them with water or herbal tea. This helps reduce excess calories.

● Prepare meals at home ___(10)___ buying pre-made options, giving you control over ___(11)___ and portion sizes.

● When shopping, look for fresh fruits and vegetables rather than processed foods. They provide a(n) ___(12)___ of nutrients essential for good health.

Cho phương trình \(m\text{sin}x+\left( m-1 \right)\text{cos}2x+5=0\) (trong đó \(m\) là tham số). Số các giá trị nguyên của \(m\) để phương trình vô nghiệm là (……).

Read the following leaflet and mark the option that best fits the numbered blanks from 19 to 24. 

TIPS FOR BETTER TIME MANAGEMENT

Want to get more done in less time? Follow these strategies for improving your productivity and focus!

Common Struggles: 

Many people (19) _____ effective time management, leading to stress and unfinished tasks. Research shows that nearly 70% of workers feel overwhelmed by their workload.

Actionable Solutions!

- Prioritize your tasks! Start by making a to-do list and (20) _____ with the most important tasks first.

- Break down big projects! Tackling a large project can be daunting, but breaking it into smaller, (21) _____ parts helps ensure progress without feeling overwhelmed.

- Avoid distractions! (22) _____ multitasking, focus on one task at a time to (23) _____ your efficiency.

- Take breaks! Give yourself regular breaks to rest and recharge, (24) _______ can help maintain a higher level of productivity.

Cho đa giác lồi có 12 cạnh. Số đường chéo của đa giác là:   

Đặc trưng cơ bản của cuộc cách mạng công nghiệp lần thứ tư là

Yếu tố nào sau đây ảnh hưởng đến cuộc đời và sự nghiệp của Hồ Chí Minh?

Read the following passage about Traveling 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 23 to 30.

          Traveling and exploring new places is an exciting way to experience different cultures and expand one’s horizons. Whether it’s a short trip to a neighbouring town or a long journey to a foreign country, stepping out into the world offers numerous benefits. It allows individuals to gain new perspectives, meet diverse people, and create lasting memories. Additionally, traveling can enhance personal growth and provide a sense of adventure and fulfillment.

          One of the key advantages of traveling is the opportunity to learn about different cultures. By immersing oneself in a new environment, travellers can gain a deeper understanding of local customs, traditions, and lifestyles. This cultural exchange fosters mutual respect and appreciation among people from different backgrounds. Moreover, experiencing different cultures can challenge preconceptions and broaden one’s worldview.

          Traveling also promotes personal development. Facing unfamiliar situations and overcoming challenges can boost confidence and adaptability. Travelers often find themselves  navigating new cities, trying unfamiliar foods, and communicating in foreign languages. These experiences can enhance problem-solving skills and resilience. Furthermore, the sense of accomplishment from successfully managing a trip can lead to increased self-esteem and a greater sense of independence.

          Another benefit of traveling is the chance to disconnect from the routine of everyday life. Exploring new places provides a break from the usual responsibilities and stresses. This can be refreshing and rejuvenating, allowing individuals to return home with a renewed sense of energy and perspective. Travel can also foster creativity by exposing individuals to new sights, sounds, and ideas.

          Despite its benefits, traveling can also present challenges. Planning a trip requires time and effort, and unexpected situations can arise. However, these challenges can be viewed as opportunities for growth and learning. With careful planning and a positive mindset, the rewards of traveling far outweigh the difficulties.

In which paragraph does the writer mention the role of cultural exchange in fostering mutual respect?

Trong các câu sau, có bao nhiêu câu là mệnh đề?

a) Hãy học thật tốt!

b) Số thực $x$ là số lẻ.

c) $7-1<5$.

d) Số $21$ là số nguyên tố.

Trang báo điện tử bằng tiếng Việt nào cung cấp những thông tin đáng tin cậy?

Mark the letter A, B, C, or D on your answer sheet to indicate the word that differs from the other three in the position of stress in each of the following questions.

Một lò xo có chiều dài tự nhiên \({l_0} = 15cm\). Lò xo được giữ cố định một đầu còn đầu kia chịu mọt lực kéo F=4,5N. Khi ấy lò xo dài l=18cm. Độ cứng của lò xo

Điểm chết trên:

H, K và G cùng đi xe điện đi học. H thấy G đội mũ bảo hiểm nhưng lại cài quai ra sau gáy nên nhắc bạn, G không nghe và cho rằng cứ đội mũ là được. Còn K thì không đội mũ và cho rằng đi xe điện thì không cần đội mũ bảo hiểm. P đi qua nhắc các bạn không nên cãi nhau trên đường và đừng dàn hàng để các phương tiện khác còn lưu thông. Trong trường hợp trên, những ai sau đây đã vi phạm pháp luật về an toàn giao thông?

Read the following passage about the Second Acts That Inspire 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 31 to 40.

Life often presents us with unexpected challenges that force us back to the drawing board. Whether due to personal setbacks, career changes, or unforeseen circumstances, the courage to begin again can lead to remarkable transformations. Many inspiring individuals have shown that it's never too late to reinvent oneself and pursue new dreams. Throughout history, countless people have overcome seemingly impossible situations through sheer determination.

[I] Take J.K. Rowling, for instance. Before becoming a literary sensation, she was a struggling single mother living on welfare. [II] Her determination eventually paid off when her books became a global phenomenon, proving that setbacks can become stepping stones to success. [III] This remarkable turnaround demonstrates how resilience and unwavering belief in oneself can overcome seemingly insurmountable obstacles. Despite facing depression and financial hardship, she never gave up on her dreams. [IV]

Colonel Harland Sanders' story is another testament to the power of starting anew. At the age of 65, when most people contemplate retirement, he found himself struggling financially after his restaurant failed. Instead of giving up, he traveled across America, sleeping in his car while pitching his chicken recipe to restaurant owners. His recipe for success wasn't just about the perfect blend of herbs and spices; it was about persistence and determination. After facing over 1,000 rejections, he finally established Kentucky Fried Chicken, which grew into a global empire. His unwavering spirit and dedication inspired generations of entrepreneurs worldwide.

These inspiring stories remind us that failure is not final, but rather a chance to redirect our path. Every setback carries the seed of an equal or greater opportunity, and sometimes the end of one chapter is simply the beginning of a better one. The key lies in having the courage to take that first step, even when the future seems uncertain. As these remarkable individuals have shown, it's never too late to rewrite your story and create a powerful second act. Their journeys teach us that persistence and courage ultimately lead to success.

Which of the following best summarises paragraph 3?