Công nghệ bảo quản trong điều kiện khí quyển biến đổi?

Chu kỳ dao động nhỏ của con lắc đơn phụ thuộc vào:

Tìm tất cả các giá trị thực của tham số \(m\) để hàm số \(y = \sqrt {x - m}  + \sqrt {2x - m - 1} \) xác định trên \(\left( {0; + \infty } \right).\) 

Read the following passage about Renewable energy sources 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.

          [I] Renewable energy sources, such as solar, wind, and hydroelectric power, have gained global popularity as a sustainable alternative to fossil fuels. [II] Unlike coal and oil, renewable energy generates electricity without releasing harmful emissions, making it a cleaner option for the environment (Jacobson et al., 2017). [III] However, despite the advantages of renewable energy, there are still notable challenges that need to be addressed for it to fully replace traditional energy sources (Ell Abban et al., 2014). [IV]

          One major advantage of renewable energy is its sustainability. Renewable resources, unlike fossil fuels, are naturally replenished and do not deplete over time. For instance, solar power harnesses energy from sunlight, which is virtually endless. In addition, renewable energy contributes to reducing greenhouse gas emissions, which helps combat climate change. Many countries are increasingly investing in renewable technologies to decrease their carbon footprint and meet international climate goals.

          However, renewable energy has certain limitations. One significant issue is its intermittent nature; for example, solar and wind power depend on weather conditions, making it difficult to generate a consistent power supply. This variability can disrupt the energy grid, which relies on a steady supply of electricity to meet demand. Another challenge is the high initial cost of setting up renewable energy facilities. Although prices have decreased in recent years, installing solar panels or wind turbines still requires substantial upfront investment (IRENA, 2019).

          Despite these challenges, advancements in technology are gradually making renewable energy more efficient and accessible. Improved energy storage systems, such as batteries, allow excess power generated during favourable conditions to be stored and used later, ensuring a more reliable energy supply. As technology and infrastructure improve, renewable energy may eventually.

According to paragraph 2, which of the following is NOT an advantage of renewable energy?

Trong các phản ứng hoá học sau, phản ứng oxi hoá – khử là

Tính chất nền kinh tế Việt Nam có sự biến đổi như thế nào sau khai thác thuộc địa lần thứ nhất?

Nội dung nào thể hiện đặc điểm hoạt động thực hành quyền công tố của Viện kiểm sát nhân dân?

Để quan sát được hình dạng kích thước của tế bào thực vật, cần sử dụng dụng cụ nào sau đây?

Đoạn chương trình sau có lỗi tại một dòng lệnh. Theo em, đó là lỗi ở câu lệnh nào:

# program to display student's marks from record

student_name = 'Soyuj'

marks = {'James': 90, 'Jules': 55, 'Arthur': 77}

for student in marks:

if student == student_name:

print(marks(student))

break

else:

print('No entry with that name found.')

Đọc đoạn thơ và trả lời câu hỏi dưới đây.

Cuối trời mây trắng bay

Lá vàng thưa thớt quá

Phải chăng lá về rừng

Mùa thu đi cùng lá

Mùa thu ra biển cả

Theo dòng nước mênh mang

Mùa thu vào hoa cúc

Chỉ còn anh và em

Chỉ còn anh và em

Là của mùa thu cũ

(Xuân Quỳnh, Xuân Quỳnh cuộc đời và tác phẩm, Nxb Phụ nữ, HN, 2003, tr. 25)

Ý nghĩa của điệp khúc “Chỉ còn anh và em” là gì?

Phương pháp bảo quản trong kho lạnh là:

Mệnh đề phủ định của mệnh đề sau “2022 là một số chẵn” là?

Cho tam giác ABC, có \(M \in BC\) sao cho \(\overrightarrow {MB} {\rm{\;}} = 3\overrightarrow {MC} \). Hãy phân tích \(\overrightarrow {AM} \) theo hai vectơ \(\vec u = \overrightarrow {AB} ,{\mkern 1mu} {\mkern 1mu} \vec v = \overrightarrow {AC} \). 

Hệ thống nào sau đây có thời gian sinh trưởng ngắn như dâu tây?

Trong các câu dưới đây, câu nào là mệnh đề toán học?

Ở điều kiện chuẩn. Khi phản ứng thu nhiệt thì

Read the following passage about beginning a lifelong journey 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.

Lifelong learning is the continuous pursuit of knowledge and skills throughout a person's life. In today's world, where technology is evolving rapidly, lifelong learning is essential for both personal growth and career development. But just how does one go about becoming a lifelong learner?

The first step in becoming a lifelong learner is to develop a growth mindset. This means believing that your abilities can be developed through hard work, dedication and commitment. Embrace challenges, view mistakes as opportunities to learn, and be open to new ideas and perspectives. Adopting a growth mindset will help you approach learning with a positive attitude and a desire to improve.

Setting achievable goals is also an important part of lifelong learning. Goals give direction and motivation to your learning journey. First, identify areas of interest and choose specific skills or knowledge that you want to develop. Second, break your goals down into smaller, more manageable tasks and track your progress. Finally, celebrate your accomplishments along the way to stay motivated.

People learn in different ways, so it's also essential that you find the methods that work best for you. You can do this by trying out a variety of different learning methods, such as reading, watching videos, attending lectures and engaging in hands-on practice. At the same time, you should also experiment with different learning tools and techniques until you find what works best for you. Becoming a lifelong learner is a continuous process that requires dedication and effort. Developing a growth mindset, setting achievable goals, and using a variety of learning methods are essential steps to becoming a successful lifelong learner. By embracing learning as a lifelong journey, you will continue to grow, develop new skills, and stay relevant in today's ever-changing world.

(Adapted from Bright)

Which of the following best paraphrases the underlined sentence in paragraph 4?

Read the following passage about the A Vision of a Harmonious Multicultural Society 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.

By 2050, our world will have undergone remarkable transformations in how different cultures coexist. The walls that once divided nations are vanishing into thin air as global citizens embrace diversity like never before. Technology will serve as the great equalizer, with translation devices making language barriers a thing of the past. In urban centers worldwide, neighborhoods will showcase architectural influences from multiple cultures, creating spaces where everyone feels at home regardless of their background. Public spaces will feature gardens with plants from different continents, symbolic of how various cultures can thrive together in one environment.

[I] Education systems will prioritize cultural literacy alongside traditional subjects. [II] Schools will teach world history from multiple perspectives rather than through a single cultural lens. [III] Students will routinely participate in virtual exchange programs, allowing them to form friendships with peers around the world without leaving their classrooms. [IV] Government policies will recognize that a harmonious multicultural society requires institutional support, with resources allocated to community centers where cultural exchange happens organically through shared meals, festivals, and collaborative art projects.

Economic systems will evolve to value diverse approaches to business and innovation. Companies will actively seek employees from varied backgrounds, recognizing that diverse teams create more innovative solutions. Traditional knowledge from indigenous communities will be respected and incorporated into sustainable development practices. The entertainment industry will produce content that authentically represents multiple cultures, moving beyond stereotypes to show the complexity within each tradition. Digital platforms will help preserve endangered languages and cultural practices through accessible archives and learning tools.

The greatest achievement of this harmonious world will be a new understanding of human identity. People will identify with multiple cultural traditions simultaneously without feeling conflicted about their loyalties. Holidays from various traditions will be celebrated collectively, creating new hybrid celebrations that honor multiple heritages. The concept of "us versus them" will gradually fade as people recognize shared values across different traditions. While challenges will remain, the dominant attitude will be one of curiosity rather than fear when encountering differences.

Where in paragraph 2 does the following sentence best fit?

These experiences will foster deep cross-cultural understanding from an early age.

Read the following passage about global warming 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.

ADMIRING A U.S. PRESIDENT

One of the most influential figures in American history is Franklin D. Roosevelt, who served as the 32nd President of the United States. (18) ______. He is known for his leadership during the Great Depression and World War II. His New Deal programs aimed to provide relief for the unemployed and stimulate economic recovery. Roosevelt’s ability to communicate with the American people through his fireside chats (19) ______.

His policies helped reshape the role of the federal government in the economy, leading to lasting changes that continue to impact the nation today. (20) ______. Roosevelt's vision for a more inclusive America resonated with many citizens, and his commitment to social welfare programs has left a significant legacy.

Additionally, his determination and resilience during his battle with polio (21) ______. This experience shaped his empathy for the struggles of others and influenced his approach to governance. His leadership style is often admired for its ability to unite the country in times of crisis. (22) ______. His enduring impact is evident in the policies and institutions that were established during his presidency. 

Read the following passage about the future of energy and mark the letter A, B, C, or D on your answer sheet to indicate the best answer to each of the following questions.

     [I] As the world grapples with the finite nature of fossil fuel reserves and the detrimental impact of climate change, the future of energy undeniably lies in renewable sources. [II] Scientists and engineers are making substantial advancements in the development of technologies that more efficiently harness solar, wind, hydro, and geothermal energy. [III] Although the transition to these renewable sources presents significant challenges, it is also regarded as a pivotal step towards establishing a sustainable and resilient energy system. [IV]

     One of the most promising advancements in renewable energy is the enhancement of solar panel efficiency. Progress in photovoltaic technology has led to the creation of panels that convert a higher proportion of sunlight into electricity. Likewise, wind turbines are becoming more and more efficient. They are capable of generating power even under low-wind conditions. These innovations are essential for making renewable energy more feasible and accessible to a broader population.

     However, the transition to renewable energy is fraught with obstacles. The intermittent nature of sources like solar and wind necessitates reliable storage solutions to ensure a consistent power supply. Although battery technology has seen significant improvements, further advancements are imperative to meet growing demand. Moreover, new infrastructure for distributing renewable energy requires expansion and upgrading to accommodate these new power sources.

     The economic impact of transitioning to renewable energy is another critical consideration. While the initial investment in renewable energy infrastructure can be substantial, the long-term benefits include reduced energy costs and job creation in the green energy sector. Governments and private enterprises are increasingly acknowledging the necessity of investing in renewable energy projects, which is crucial for fostering innovation and diminishing reliance on fossil fuels.

     Ultimately, the future of energy hinges on our capacity to innovate and adapt. By continuing to invest in research and development, improving infrastructure, and addressing economic and technical challenges, we can transition towards a more sustainable and environmentally friendly energy system.

The word They in paragraph 2 refers to _______.