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

Một ô tô chạy từ địa điểm A đến địa điểm B với vận tốc 40 km/h. Sau đó ô tô quay trở về A với tốc độ 60 km/h. Giả sử ô tô luôn chuyển động thẳng đều. Tính vận tốc trung bình của ô tô trên cả đoạn đường đi và về.

Ý nào đúng: Yếu tố có vai trò đặc biệt quan trọng đối với việc hình thành các điểm du lịch?

Chủ thể nào trong các trường hợp dưới đây có hành vi cạnh tranh lành mạnh?

- Trường hợp 1. Công ty D tìm mọi cách để mua được thông tin chiến lược kinh doanh của doanh nghiệp Y - đối thủ cạnh tranh trực tiếp.

- Trường hợp 2. Công ty K luôn quan tâm đến việc tạo sự thân thiện, tin tưởng của khách hàng thông qua việc cung cấp sản phẩm có chất lượng cao kết hợp với quan tâm, chăm sóc, ưu đãi khách hàng.

Read the passage carefully. Choose an option (A, B, C, or D) that best answers each question from 41 to 45.

1. It is estimated that about 40 per cent of the world's population use social media, and many of these billions of social media users look up to influencers to help them decide what to buy and what trends to follow. An influencer is a person who can influence the decisions of his or her followers because of his or her knowledge or special knowledge in a particular area, e.g. fashion, travel, or technology. Influencers are now seen by many companies as a direct way to customers' hearts. Brands are now asking powerful influencers to market their products. With some influencers charging up to $25,000 for one social media post, it is no surprise that more and more people are keen to become influencers, too. If you are one of them, then here are five tips on how to do it.

2. Choose your niche: What is the area that you know most about? What do you feel most excited talking about? Find the specific area that you are most interested in and develop it.

3. Choose your medium and write an interesting bio: Most influencers these days are bloggers and micro-bloggers. Decide which medium – such as your own online blog, Instagram or Snapchat – is the best way to connect with your followers and chat about your niche area. When you have done that, write an attention-grabbing bio that describes you and your speciality area in an interesting and unique way. Make sure that people who read your bio will want to follow you.

4. Post regularly and consistently: Many influencers post daily on their social media accounts. The more you post, the more likely people will follow you. Also, make sure that your posts are consistent and possibly follow a theme.

5. Tell an interesting story: Whether it is a photo or a comment that you are posting, use it to tell a story that will catch the attention of your followers and help them connectwith you.

6. Make sure people can easily find your content: Publicize your posts on a variety of social media by hashtags and catchy titles to make sure that they can be easily found. There is no point writing the most exciting blogposts or posting the most attractive photographs if no one is going to see them.

7. Most importantly, if you want to become a social media influencer, you need to have patience. Keep posting and your following will gradually increase. Good luck!

What is the passage mainly about?

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.

Taking Home the World Cup

Standing just 36 centimeters tall, the FIFA World Cup Trophy symbolizes the pinnacle of football achievement.  Every four years, teams worldwide compete for it, but no one ever takes the trophy home. Made of 18-carat gold, the original trophy remains under FIFA's protection, with winners receiving only a replica. This measure safeguards it from theft, as the trophy has been stolen twice in its history.

The original trophy was made by a French sculptor, Abel LaFleur, and was called the “Jules Rimet Cup,” in honor of the founder of the World Cup tournament. Sometime during the first three World Cup events (1930, 1934, and 1938), the name changed to simply the “World Cup.” Then during World War II, not much was seen or heard of the trophy. It was being kept hidden in a shoe box under the bed of Dr. Ottorino Barassi, the Italian vice-president of FIFA, to prevent it from falling into the hands of the Nazi army. In 1966, the Cup was stolen during a public showing of the trophy prior to the World Cup tournament in England. Luckily, it was found a short time later, none the worse for wear, in a trash container by a little dog named Pickles. Four years later, Brazil earned permanent possession of the original trophy by winning its third World Cup title. Unfortunately, the trophy was stolen a second time in 1983 and was never recovered. The Brazilian Football Association had to have a duplicate trophy made.

(I) After the first trophy became the possession of Brazil’s football association, a new World Cup Trophy for FIFA was designed by an Italian artist, Silvio Gazzaniga, in 1974. (II) This trophy cannot be won outright, but remains in the possession of FIFA, and rest assured they are watching it very closely. Today, World Cup winners are awarded a replica of the trophy that is gold-plated, rather than solid gold like the real one. (III) Gazzaniga’s World Cup trophy weighs almost five kilograms. (IV) Its base contains two layers of a semi-precious stone called malachite, and has room for seventeen small plaques bearing the names of the winning teams---enough space to honor all the World Cup champions up to the year 2038. After that, a new trophy will have to be made.

Which of the following is NOT a reason for FIFA keeping the original trophy under protection?

Cho dãy số có các số hạng đầu là: \(\frac{1}{4};\frac{1}{{{4^2}}};\frac{1}{{{4^3}}};\frac{1}{{{4^4}}};\frac{1}{{{4^5}}};...\) Số hạng tổng quát của dãy số này là?

Dãy nào sau đây gồm các chất đều có khả năng tham gia phản ứng trùng hợp?

Tôi mồ côi cha năm hai tuổi

Mẹ tôi thương con không lấy chồng

Trồng dâu, nuôi tằm, dệt vải

Nuôi tôi đến ngày lớn khôn.

Hai mươi năm qua tôi vẫn nhớ

Ngày ấy tôi mới lên năm

Có lần tôi nói dối mẹ

Hôm sau tưởng phải ăn đòn.

Nhưng không, mẹ tôi chỉ buồn

Ôm tôi hôn lên mái tóc

- Con ơi

trước khi nhắm mắt

Cha con dặn con suốt đời

Phải làm một người chân thật…

                   (Trích Lời mẹ dặn – Phùng Quán)

Việc nhắc lại lời dặn của cha trước khi mất có ý nghĩa gì với tác giả?

Bảng dưới đây thống kê kết quả điểm khảo sát môn Tiếng Anh của học sinh khối 12 trong một trường A:

Khoảng biến thiên của mẫu số liệu ghép nhóm trên bằng bao nhiêu?

Hoạt động phân chia các yếu tố sản xuất cho các ngành sản xuất, các đơn vị sản xuất khác nhau để tạo ra sản phầm được gọi là gì?

Read the passage and mark the letter A, B, C or D to answer the following questions.
Volunteering offers many of the same social benefits, with the added bonus of helping others and developing useful skills to put on your CV. Plus, students are in a unique position to help, suggests Tom Fox. "They can take their enthusiasm and excitement for opportunities and share their passions, subject knowledge and experience with people." The idea of giving up time for nothing might seem impractical at first, especially once the pressures of study and coursework or exams begin to mount up. However, Michelle Wright, CEO of charity support organization Cause4, suggests seeing volunteering as a two-way street. "I think it is fine for undergraduates to approach volunteering as a symbiotic relationship where doing good is just one part of the motivation for reaching personal and professional goals."
Katerina Rudiger, head of skills and policy campaigns at the Chartered Institute of Personnel and Development (CIPD), says: "Volunteering can be a valuable way of gaining that experience, as well as building confidence, broadening your horizons, becoming a better team player and developing those all- important 'employability skills' such as communication and decision making." Amanda Haig, graduate HR manager, agrees that volunteering can help your employment prospects. "Volunteering can demonstrate positive personality traits and skill sets, such as proactivity, and teamwork," she says.
A positive side-effect of volunteering is improving your time at university by getting involved in the local community. Leaving the student bubble can make your time as an undergraduate much more varied. At Bath Spa University, more than 1,000 students volunteered over the past year, doing everything from working on local environmental projects to helping in schools or assisting the elderly. ”Quite often there can be a divide between students and permanent residents," says students' union president Amy Dawson, "but if students invest a little time now, they will be giving something back to the local community and will reap the benefits in the future."
“You might also find that volunteering helps your studies if you choose the right program. At Lancaster, volunteering is linked into academic modules in some cases", explains Fox. "This has multiple wins. Students get to apply their learning in the classroom and share their interests with children in local schools or community organizations, while schools gain skilled students with a passion for a subject that enthuses their pupils."

What is the most suitable title for this reading?

Read the following passage about the cultural diversity 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 1 to 10. 

    [I] In today's globalized world, cultural diversity has become a fundamental aspect of many societies. [II] Many countries are experiencing increasing levels of migration. [III] With the rise of immigration and the blending of traditions, people from various cultural backgrounds are now living side by side in cities across the globe. [IV]

    One of the key advantages of cultural diversity is the richness that it adds to a society. Different cultures introduce unique viewpoints, foods, languages, and traditions, which help people broaden their understanding of the world. In schools and workplaces, cultural diversity fosters creativity and innovation, as individuals from different backgrounds approach problems in innovative ways. However, there are also challenges associated with living in culturally diverse communities. Misunderstandings and communication barriers can arise when people are unfamiliar with each other's customs and values. To address these issues, societies must encourage cultural sensitivity and create opportunities for cross-cultural exchange.

    Governments and institutions around the world are beginning to implement policies that promote inclusion and respect for cultural differences. By celebrating diversity through events, education, and media representation, communities can create environments where people feel valued regardless of their background. Ultimately, embracing cultural diversity helps to build more peaceful and harmonious societies.

The word “innovative” in paragraph 2 could best be replaced by _______.

Trong không gian với hệ tọa độ Oxyz, cho ba vectơ \(\vec{a}=\left( 5;7;2 \right),\vec{b}=\left( 3;0;1 \right),\vec{c}=\left( -6;1;-1 \right)\). Tọa độ của vectơ \(\vec{m}=3\vec{a}-2\vec{b}+\vec{c}\) là

Cho đoạn chương trình sau:

a=6

s=0

while (a>0):

 s=s+a

 a=a-1

Giá trị của s khi thực hiện đoạn chương trình trên bằng bao nhiêu?

Một trong những đặc điểm nổi bật của chủ nghĩa tư bản hiện đại là

Pháp luật được đảm bảo thực hiện bằng quyền lực gì?

Mark the letter A, B, C or D on your answer sheet to indicate the correct option that best fits each of the numbered blanks from 18 to 23.

          AI (Artificial Intelligence) is revolutionizing the medical field by providing more accurate diagnoses and personalized treatment plans. Since its development, AI has become increasingly integrated into healthcare, (18) ___________. One of the most prominent examples is its use in medical imaging, where AI-powered systems are capable of detecting diseases, like cancer, with remarkable precision.

          AI systems are particularly valued for their ability to process vast amounts of data quickly, enabling doctors to focus on patient care rather than administrative tasks. These advancements have led to (19) ___________, allowing for better overall outcomes. Not only does AI reduce the potential for human error, but it also continuously improves through learning from new medical data.

          Medical AI systems have also (20) ___________. By analyzing genetic information and patient histories, AI can suggest potential treatment options that may have been overlooked by human experts. Moreover, these systems often lack the information needed to recommend the best treatment, ensuring that treatments are more effective and better suited to individual needs.

          Despite the many benefits, some critics argue that there are still ethical concerns about the widespread adoption of AI in healthcare. For example, (21) ___________ could lead to overreliance on machines, reducing the need for skilled medical professionals. However, proponents believe that as AI continues to evolve,  the medical field will revert to traditional methods By working alongside human experts, AI has the potential to transform healthcare, making it more efficient and accessible for all.

          In summary, the rise of AI in medicine is an exciting development that shows great promise. It is essential (22) ___________. As these technologies advance, doctors may struggle to trust AI in complex cases.

Những hành vi vi phạm quyền và nghĩa vụ của công dân trong tham gia quản lý nhà nước và xã hội sẽ gây ra hậu quả như thế nào đối với cơ quan nhà nước?

Con ngựa kéo xe chuyển động đều với vận tốc 9 km/h. Lực kéo là 300 N. Công suất của ngựa là