Hình vẽ nào sau đây có phần không bị gạch minh họa cho tập $A=\left\{ x\in \mathbb{R}\left| \left| x \right|\ge 1 \right. \right\}$?

Người dân ở nhóm nước phát triển thường có tuổi thọ trung bình cao hơn ở nhóm nước đang phát triển do đâu?

Quyết định nào sau đây của Hội nghị I-an-ta (2-1945) là cơ sở hình thành trật tự thế giới hai cực sau Chiến tranh thế giới thứ hai?

Đứng đầu giai cấp thông trị ở các quốc gia cổ đại phương Đông là ai?

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 does the word “side-effect” mean?

Miền không bị tô màu trong hình vẽ (kể cả biên) là miền nghiệm của hệ bất phương trình nào sau đây?

Cho hình chóp S.ABC có cạnh SA vuông góc với mặt phẳng đáy \((ABC)\), tam giác ABC vuông tại \(B\). Phương án nào dưới đây SAI?

Đuôi tệp của tệp ảnh động khi xuất là gì?

Với diện tích 20 triệu km², năm 2020, dân số Mỹ La tinh là 658 triệu người. Vậy mật độ dân số của khu vực Mỹ La tinh là bao nhiêu người/km²? (Làm tròn đến số hàng đơn vị của người/km2)

Đáp án:.......

Read the following passage about the Pathways from Today's Actions to Tomorrow's World 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.

As we stand at the crossroads of environmental decision-making, the actions we take today will shape our world in 2050. Scientists warn that we're skating on thin ice with current consumption patterns and carbon emissions. Global temperatures could rise by 2-4 degrees Celsius unless significant changes occur within the next decade. Many countries have pledged to achieve carbon neutrality by 2050, but these promises require immediate implementation. Individual choices in transportation, energy usage, and consumption can collectively influence whether future generations inherit a sustainable planet or face severe climate consequences.

[I] Technological innovation represents our greatest hope for addressing environmental challenges by 2050. [II] Renewable energy sources like solar and wind are becoming increasingly affordable, potentially replacing fossil fuels entirely within thirty years. [III] Electric vehicles may dominate transportation networks, while vertical farming could transform food production in urban areas. [IV] However, these technological solutions must be developed and deployed equitably to avoid creating new disparities between wealthy and developing nations.

Social structures will undergo dramatic transformation by 2050 as demographic shifts reshape communities worldwide. Aging populations in developed countries will necessitate new approaches to healthcare, retirement, and social support systems. Meanwhile, climate migration may force millions to relocate from vulnerable coastal and drought-prone regions. Education systems must evolve to prepare our students for jobs that don't yet exist, emphasizing their adaptability and lifelong learning. Cities will need to become more resilient, incorporating green spaces and sustainable infrastructure to support growing populations.

Economic models must fundamentally change by 2050 to balance prosperity with environmental responsibility. The traditional focus on continuous growth may shift toward measuring success through wellbeing indicators rather than GDP alone. Circular economy principles will likely replace linear production models, with products designed for reuse and recycling. Resource-sharing platforms may become more prevalent, reducing individual consumption while maintaining living standards. Companies implementing genuinely sustainable practices will thrive, while those clinging to environmentally harmful methods may disappear entirely. The transition presents both challenges and opportunities for businesses willing to embrace innovation and sustainability.

Where in paragraph 2 does the following sentence best fit?

Artificial intelligence systems will likely revolutionize resource management, reducing waste significantly across industries.

Cho hình chóp S. ABCD với đáy ABCD có tất cả các cạnh bằng nhau. Gọi I, J lần lượt thuộc các cạnh SC, BC sao cho tam giác IJC là tam giác đều. Khi đó, góc giữa hai đường thẳng IJ và AD bằng?

Read the following passage about The Temple of Literature 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.

The Temple of Literature, also known as Văn Miếu, is a significant cultural and historical landmark of Việt Nam. ___(18)___, the temple is Việt Nam's oldest university. It was first constructed in 1070 during the reign of Emperor Lý Thánh Tông to serve as the country's center of learning and scholarship. For centuries, ___(19)___.

The temple is a source of national pride for the Vietnamese. ___(20)___, with its distinctive roofs and intricate carvings. The temple complex features five courtyards, each with its own unique features. ___(21)___, a series of buildings where Việt Nam's scholars were trained.

Today, the Temple of Literature is a popular tourist destination. It is particularly popular during the Vietnamese Lunar New Year, when students come to pray for good luck in their studies. ___(22)___. For those interested in Vietnamese history, architecture, or culture, a visit to the Temple of Literature is a must.

(Adapted from Explore New Worlds)

Khi một chất đang hóa hơi ở nhiệt độ sôi, nếu ta vẫn cung cấp nhiệt lượng thì nhiệt độ của nó sẽ

Cho mệnh đề: “Nếu tam giác có hai góc bằng \({60^ \circ }\) thì tam giác đó là tam giác đều”. Mệnh đề đảo của mệnh đề đã cho là?

Một vật khối lượng 2 kg có thế năng 10 J đối với mặt đất. Lấy \(g=10\) m/s². Khi đó vật ở độ cao

Phương trình tổng quát của đường thẳng đi qua hai điểm A(2 ; -1) và B(2 ; 5) là:

Trong các đơn vị sau, đơn vị của cường độ điện trường là:

Mệnh đề nào sau đây đúng?

Hệ QTCSDL có chức năng ngăn chặn lỗi nào sau đây trong quá trình nhập dữ liệu cho bảng?

Một nhóm gồm 8 phụ nữ đi cắm trại gồm 2 người đã có chồng là V và X và 6 cô gái là K, L, M, O, P,T. Họ ở trong 3 lều 1, 2 và 3 với các thông tin sau đây:

- Mỗi lều không chứa nhiều hơn 3 người và V ở lều thứ nhất.

- V không ở cùng lều với O, con gái cô ta.

- X không ở cùng lều với P, con gái cô ta.

- K, L và M là những người bạn thân, và họ sẽ ở cùng một lều.

Người nào sau đây có thể ở lều thứ nhất?