Cho hai tập hợp \(X = \{ 1;3;5;8\} ,Y = \{ 3;5;7;9\} \). Tập hợp \(X \cup Y\) bằng tập hợp nào sau đây?

Thời gian rụng trứng trung bình vào ngày thứ mấy trong chu kỳ kinh nguyệt ở người?

Ở cấp Trung học phổ thông môn Địa lí thuộc nhóm môn nào?

Kết quả khi thực hiện câu lệnh sau:

>>>10 - 5 ** 2 + 8//3 +2 

Sử học có thể xác định đúng giá trị của di sản nhờ yếu tố nào sau đây?

Một máy bay bay theo phương ngang ở độ cao 10 km với tốc độ 720 km/h. Viên phi công phải thả quả bom từ xa cách mục tiêu (theo phương ngang) bao nhiêu để quả bom rơi trúng mục tiêu? Lấy \[{\rm{g}} = 10{\rm{m/}}{{\rm{s}}^{\rm{2}}}\].

Read thefollowing passage and mark the letter A, B, C or D on your answer sheet to indicate the option that bestfits each of the numbered blanksfrom 18 to 22.

Peer pressure, (18) ________, can have both positive and negative effects. For instance, when surrounded by motivated peers, (19) ________. Positive peer pressure can be a great motivator, as peers who excel in academics or extracurricular activities can inspire others to follow suit. However, peer pressure can also lead to negative outcomes. The influence of friends who engage in risky behaviors, such as skipping school or using substances, can encourage others to make poor decisions. Studies have shown that teenagers are more likely to take risks in the presence of their peers because they feel more confident when surrounded by others.

While peer pressure is often associated with negative behavior,  (20) ________. For example, students may be encouraged to excel in their studies or participate in volunteer activities due to the positive influence of their peers. However, it is important to develop strong decision-making skills and self-confidence (21) ________.

Parents and educators play a key role in helping young people navigate peer pressure. By teaching young people how to recognize both positive and negative peer pressure, and how to make independent, thoughtful decisions, parents and educators can help ensure that students thrive in a healthy, supportive environment. Encouraging open communication, providing advice on how to stay true to one's values, and helping students develop self-confidence are all crucial aspects of this process.

In conclusion, peer pressure is a powerful influence. (22) ________, teenagers can succeed and grow in a positive social environment.

Năm 1830-1831, vua Minh Mạng tiến hành cải cách hành chính, chia cả nước thành

Đặc điểm nào không đúng với nền kinh tế Liên bang Nga?

Read the following passage about endangered languages and mark the letter A, B, C or D on your answer sheet to indicate the best answer to each of the following questionsfrom 31 to 40.

[I] Social media has become a dominant force in modern communication, offering a range of benefits and challenges. [II] It has revolutionized the way people interact, share information, and even form relationships. [III] While these platforms offer opportunities for connection and expression, they also have their drawbacks. [IV] For instance, excessive use of social media has been linked to a range of negative effects, including mental health issues, social isolation, and decreased productivity. [V] However, when used responsibly, social media can also offer a variety of positive outcomes, such as the ability to stay connected with loved ones, network professionally, and access valuable information and resources.

One of the major benefits of social media is its ability to keep people connected. For example, individuals who live far apart can maintain close relationships through regular communication on these platforms. Social media also facilitates professional networking, allowing users to connect with potential employers or clients, and enabling companies to promote their products and services to a global audience. Additionally, platforms like Facebook, Twitter, and Instagram provide a space for people to share ideas, opinions, and creative work, fostering a sense of community and collaboration.

Despite these advantages, there are serious concerns about the negative impact of social media, particularly on mental health. Studies have shown that excessive social media use can contribute to feelings of anxiety, depression, and loneliness. This is often attributed to the unrealistic portrayals of life that are commonly shared on these platforms, leading to comparisons that can make individuals feel inadequate or left out. Furthermore, constant exposure to negative news or online bullying can exacerbate these feelings and contribute to long-term psychological stress.

Another issue with social media is its potential to distract people from their daily responsibilities. With notifications constantly popping up and endless streams of content to scroll through, individuals may find it difficult to focus on tasks such as work, school, or personal obligations. This can result in decreased productivity and a lack of attention to important matters.

Ultimately, the impact of social media depends on how it is used. If individuals are mindful of their usage patterns and take steps to limit their time on these platforms, they can enjoy the benefits of staying connected and informed without the negative consequences. Parents, educators, and mental health professionals can also play a role in helping young people develop healthy habits and manage their social media use effectively.

According to passage, which of the following is NOT a benefit of social media? 

Read the following passage about the Science in Service of Humanity 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.

Science has come out of its shell in laboratories to become a powerful force for human advancement. Modern scientific endeavors increasingly focus on addressing real-world challenges affecting communities globally. From developing vaccines that save millions to creating technologies connecting people across continents, science serves humanity in countless ways. This shift represents a fundamental evolution in how we perceive scientific progress—not merely academic pursuit but a practical tool for improving lives and solving pressing problems.

[I] Medical breakthroughs exemplify how science directly benefits humanity. [II] For instance, gene therapy offers hope for those with inherited conditions, while artificial intelligence helps diagnose diseases earlier and more accurately. [III] These advancements didn't happen overnight; scientists had to burn the midnight oil for years before achieving success. [IV] Their perseverance demonstrates that when science targets humanitarian goals, results can transform society profoundly.

Environmental science has emerged as another crucial domain where laboratory work translates into human welfare. Climate scientists provide data informing policy decisions affecting billions. Conservation biologists develop strategies to protect biodiversity, ensuring future generations benefit from natural resources. Agricultural researchers create drought-resistant crops helping communities withstand changing climate conditions. Despite these contributions, environmental science faces challenges including funding limitations, political resistance, and urgency of addressing accelerating climate change. Nevertheless, dedicated scientists continue their work, recognizing environmental health directly impacts human wellbeing.

The future of science in service of humanity looks increasingly collaborative and inclusive. Modern approaches incorporate diverse perspectives, including indigenous knowledge and community participation. Citizen science projects engage non-professionals in data collection, democratizing the scientific process. Open-access publishing makes research findings available to anyone with internet access, not just wealthy institutions. These developments suggest science's greatest potential lies in becoming more accessible and responsive to human needs. As we face complex global challenges, from pandemics to climate change, science serving humanity offers our best hope for a sustainable future.

Which of the following best summarises the passage?

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.

STAY SAFE ON FACEBOOK

Let’s protect your privacy & security

1.    Privacy risks: Facebook collects a large (7) ______ of personal information. This information is often used for targeted advertising but could also be accessed by unauthorized third parties. Always be (8) ______ of what you share like your phone number, address, or financial information.

What you can do:

●        Adjust your privacy (9) ______ to limit who can see your posts and personal details.

●        Think twice before sharing information that could be misused.

2.    Security tips: Your Facebook account can be a target for hackers. Cybercriminals may attempt to steal your login information or infect your device with malware.

What you can do:

●        Enable two-factor authentication (2FA): This adds an extra layer of security, making it harder for (10) ______ to access your account.

●        Use strong, unique passwords: (11) ______ using the same password across multiple sites, make your Facebook password complex.

●        Beware of scams: Don’t click on suspicious links or download files from unknown sources. Always (12) ______ the sender’s identity before responding to messages.

Mark the letter A, B, C or D 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. Sarah: Yes, I have. I go to the gym every day and eat healthily

b. Sarah: Hi, John! You look great! 

c. John: Hi, Sarah! Thanks! You look fit, too! Have you been exercising?

Thế giới sống liên tục tiến hóa là nhờ cơ chế

Một khẩu súng khối lượng M=4kg bắn ra viên đạn khối lượn m=20g theo phương ngang. Súng giật lùi với vận tốc V có độ lớn 3m/s. Vận tốc viên đạn khi bay ra khỏi nòng súng là

Cơ quan nhà nước nào có thẩm quyền quyết định các vấn đề về ngân sách nhà nước?

Nước ta, diện tích đồi núi trọc ngày càng tăng ở vùng núi, hoang mạc hóa diễn ra mạnh ở vùng ven biển là do đâu?

Đại lượng nào dưới đây là đại lượng vectơ?

Read the passage below and choose A, B, C or D.

Millions of people are using cellphones today. In many places, it is actually considered unusual not to use one. In many countries, cellphones are very popular with young people. They find that the phones are more than a means of communication - having a mobile phone shows that they are cool and connected.

The explosion in mobile phone use around the world has made some health professionals worried. Some doctors are concerned that in the future many people may suffer health problems from the use of mobile phones. In England, there has been a serious debate about this issue. Mobile phone companies are worried about the negative publicity of such ideas. They say that there is no proof that mobile phones are bad for your health.

On the other hand, medical studies have shown changes in the brain cells of some people who use mobile phones. Signs of change in the tissues of the brain and head can be detected with modern scanning equipment. In one case, a traveling salesman had to retire at young age because of serious memory loss. He couldn't remember even simple tasks. He would often forget the name of his own son. This man used to talk on his mobile phone for about six hours a day, every day of his working week, for a couple of years. His family doctor blamed his mobile phone use, but his employer's doctor didn't agree.

What is it that makes mobile phones potentially harmful? The answer is radiation. High-tech machines can detect very small amounts of radiation from mobile phones. Mobile phone companies agree that there is some radiation, but they say the amount is too small to worry about.

As the discussion about their safety continues, it appears that it's best to use mobile phones less often. Use your regular phone if you want to talk for a long time. Use your mobile phone only when you really need it. Mobile phones can be very useful and convenient, especially in emergencies. In the future, mobile phones may have a warning label that says they are bad for your health. So for now, it's wise not to use your mobile phone too often.

Which of the following does the author probably support?

Việc phát huy giá trị di sản văn hóa nhằm mục đích nào sau đây?