Một quan sát viên đứng ở bờ biển nhận thấy rằng khoảng cách giữa 5 ngọn sóng liên tiếp là 12 m. Bước sóng của sóng đó là

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks.

I was an MBA student in the USA and I lived in the university’s coed dormitory. In my culture, usually, if a woman talks to a man, it is a sign of romantic interest. (34)_____, in the first few days of school, I found it strange that so many women were talking to me and I was under the impression that some women on my dormitory floor were interested in me. To (35)__________ their politeness, I would buy   them flowers or offer small gifts, as is done in my country. However, I was quite surprised to see that these same women now  seemed (36)______around me. One was even quite offended and told me to leave her alone. Eventually I talked to the residence adviser on my floor to see what I was doing wrong, and he explained to me the way men and women usually interact in the USA. I was quite relieved to hear that (37)____ was wrong with me, but rather with the way I was interpreting my conversations with    women. Even though I did not find the love of my life while I was in the USA, I still made many good female friends afterwards (38)______I still maintain contact.

Trong thí nghiệm giao thoa Young, nguồn sóng có bước sóng là 600 nm; khoảng cách giữa hai khe hẹp là 2 mm; khoảng cách giữa hai khe đến màn là 2 m. Khoảng vân là

Nhiều quốc gia trên thế giới đang áp dụng biện pháp đánh thuế suất cao đối với một số hàng hoá, dịch vụ đặc biệt, nhằm điều tiết việc sản xuất và tiêu dùng xã hội cũng như nhập khẩu hàng hóa, từ đó tăng nguồn thu cho ngân sách nhà nước là thực hiện loại thuế nào?

Bước đầu tiên nhất của việc lập kế hoạch tài chính cá nhân là gì?

Cần ngâm hạt trong cốc nước có nhiệt độ là bao nhiêu?

Cho kí hiệu nguyên tử \(_{19}^{39}K\). Phát biểu đúng là

Việc thực hiện tốt các quy định pháp luật về quyền khiếu nại của công dân mang đến nhiều ý nghĩa quan trọng, ngoại trừ việc:

Khi ô tô đang chạy với vận tốc 10 m/s trên đoạn đường thẳng thì người lái xe tăng ga và ô tô chuyển động nhanh dần đều. Sau 20 s, ô tô đạt vận tốc 14 m/s. Quãng đường mà ô tô đã đi được sau $40s$ kể từ lúc bắt đầu tăng ga và tốc độ trung bình trên quãng đường đó lần lượt là

Choose A, B, C or D to complete each sentence.

According to the chairman's spokesperson, further ______________ in the marketing division are to be expected.

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.

Which of the following best summarises the passage?

Trong bối cảnh ngày càng cạnh tranh khốc liệt, công ty giày dép B luôn tìm cách cải tiến sản phẩm, giảm giá thành đi đôi với cam kết chất lượng, nhờ đó người dân mua hàng của công ty B luôn nhận được chất lượng sản phẩm tốt. Việc làm của công ty B thể hiện ưu điểm của

Cho một bánh xe có bán kính là R = 10,0 ± 0,5 cm. Sai số tương đối của chu vi bánh xe là:

Yếu tố nào dưới đây khiến cho vùng Đông Bắc có mùa đông lạnh nhất cả nước?

Sao lưu cơ sở dữ liệu từ máy tính nguồn bằng cách?

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.

The word “informing” in paragraph 3 is OPPOSITE in meaning to _________.

Cho hàm số $y=\frac{3x-1}{x-3}$. Gọi giá trị lớn nhất là M, giá trị nhỏ nhất mà m trên $\left[0;2\right]$. Khi đó m + M có giá trị là?

Dinh dưỡng ở thực vật là

Theo em phát biểu nào sau đây là đúng khi nói về Hằng?

Nhận định nào sau đây không đúng về vai trò của đá mẹ đối với việc hình thành đất?