Một chiếc thuyền đi xuôi dòng 1,6 km rồi quay đầu đi ngược dòng 1,2 km. Toàn bộ chuyến đi mất 45 phút. Tìm vận tốc trung bình của thuyền.

Mark the letter A, B, C or D on your answer sheet to indicate the best arrangement of utterances or sentences to make a meaningful exchange or text in each of the following questionsfrom 13 to 17.

a. These centers provide structured courses with experienced teachers, interactive activities, and access to diverse learning resources.

b. As a result, students can improve their English skills more effectively compared to self-study.

c. Studying at an English center offers numerous advantages for learners seeking to enhance their language proficiency.

d. Furthermore, English centers create an immersive environment where students can practice speaking and listening in real-life situations.

e. In conclusion, enrolling in an English center is a great way to develop language skills in a systematic and engaging manner.

Quá trình trao đổi chất là quá trình như thế nào?

Cho biết phần mềm nguồn mở là gì?

Đâu là phương án đúng: Có loại tỉ lệ nào?

Vào năm 2020, chỉ số HDI của Cộng hòa Nam Phi đạt 0,727, được xếp vào nhóm có chỉ số HDI

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.

According to paragraph 2, which of the following is NOT an advantage of cultural diversity?

Read the following passage about the Reimagining International Cooperation 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.

Global environmental governance is changing how countries work together. Nations now understand that pollution, climate change, and resource problems cross borders. Traditional agreements between countries are not enough anymore. New approaches include businesses, local communities, and citizen groups working with governments. This all-hands-on-deck approach helps create better solutions for our planet. Many successful projects show that when different groups cooperate, they can solve difficult environmental problems that single countries cannot fix alone.

Environmental governance faces many challenges today. [I] Political differences between nations often slow down important decisions. [II] Some countries worry that strict environmental rules might hurt their economic growth. Despite these obstacles, new technologies are helping countries monitor environmental changes better. [III] Satellite data and computer models allow scientists to track forest loss, ocean pollution, and climate patterns. [IV] This information helps leaders make smarter decisions about protecting natural resources.

The future of environmental governance depends on innovation. Digital platforms now connect environmental experts around the world instantly. Young people are bringing fresh ideas through social media campaigns and protest movements. Indigenous communities contribute valuable traditional knowledge about sustainable living practices. Financial institutions are creating new ways to fund green projects in developing countries. These combined efforts are creating a more flexible and responsive system of global cooperation that can adapt to changing environmental conditions more quickly than old-fashioned diplomatic channels.

Effective environmental governance requires balance between global standards and local solutions. While international agreements provide important frameworks, communities need freedom to implement approaches that fit their unique situations. Successful governance models respect cultural differences while maintaining scientific standards. Education plays a crucial role in building public support for environmental policies. When citizens understand environmental issues, they make better choices and hold their leaders accountable. The most promising path forward combines strong international institutions with energetic local action to create lasting environmental solutions.

Which of the following best summarises the passage?

Một vật nhỏ khối lượng m=2kg trượt xuống một đường dốc thẳng, nhẵn tại một thời điểm xác định có vận tốc 3m/s, sau đó 4s vật có vận tốc 7m/s, tiếp ngay sau đó 3s vật có động lượng là

Nhận định “Rồng Nam phun bạc, đánh đổ Đức tặc” của tạp chí Nam Phong muốn nhấn mạnh điều gì?

Đoạn chương trình sau thực hiện công việc gì?

t=0

for i in range(1,m):

if (i %3 ==0) and (i %5 ==0):

t= t + i

Với ba đường thẳng a, b, c không cùng nằm trong một mặt phẳng và cùng đi qua một điểm O, ta xác định được bao nhiêu mặt phẳng?

Dấu hiệu nào sau đây cho thấy ba văn bản trong Truyện về các vị thần sáng tạo thế giới thuộc nhóm thần thoại suy nguyên?

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.

The phrase “skating on thin ice” in paragraph 1 could be best replaced by _________.

Để xác định phụ nữ có thai hay không, người ta dùng que thử thai để xác định sự có mặt của loại hormone nào sau đây?

Cho hai tập hợp $X = \{1; 2; 4;7;9\}$ và $Y= \{-1;0;7;10\}$. Tập hợp $X \cup Y$ có bao nhiêu phần tử?

Lithium có hai đồng vị bền trong tự nhiên, trong đó đồng vị $^6_3Li$ chiếm 7,5% tổng số nguyên tử. Biết nguyên tử khối trung bình của lithium là 6,925, số khối của đồng vị còn lại là

Thông điệp chính Sô-lô-khốp muốn gửi tới người đọc qua tác phẩm Số phận con người là gì?

Nhiệt độ ngoài trời ở một thành phố vào các thời điểm khác nhau trong ngày có thể được mô phỏng bởi công thức \(h(t)=29+3 \sin \frac{\pi}{12}(t-9)\) với \(h\) tính bằng \({ }^{\circ} C\) và \(t\) là thời gian trong ngày tính bằng giờ. Thời gian nhiệt độ cao nhất trong ngày là:

Trong không gian $\text{Ox}yz$, phương trình mặt cầu có tâm $I\left(0;2;0\right)$ và đi qua điểm $M\left(2;0;0\right)$ là?

Cấu tạo li hợp ma sát gồm mấy phần?