Trong quá trình chuẩn bị cho việc thành lập Đảng Cộng sản Việt Nam, Nguyễn Ái Quốc KHÔNG có hoạt động nào sau đây?

Động cơ đặt ở đuôi xe ô tô thì hệ thống truyền lực không có:

Cho \(f\left( x \right)=a{{x}^{2}}+bx+c\), \(\left( a\ne 0 \right)\) và \(\Delta ={{b}^{2}}-4ac\). Cho biết dấu của \(\Delta \) khi \(f\left( x \right)\) luôn cùng dấu với hệ số \(a\) với mọi \(x\in \mathbb{R}\).

Để biểu diễn các giá trị lôgic “Đúng” và “Sai” tương ứng là gì?

Phép lai nào cho tỉ lệ phân li kiểu hình đời con giống nhau ở cả hai giới?

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 thefollowing questions from 25 to 29. 

a. Customer Service: Hello, this is the Bus Operation Center.

b. Tom: The buses are always running late, especially during rush hour.

c. Tom: I want to complain about bus No. 7.

d. Customer Service: What seems to be the problem?

e. Customer Service: I'm sorry to hear that. Unfortunately, there's nothing we can do about it. Due to the high volume of traffic, buses can sometimes be delayed.

Cho hình lăng trụ tam giác \(ABC\cdot A'B'C'\).

Cho đoạn chương trình sau:

a=6

s=0

while (a>0):

 s=s+a

 a=a-1

Giá trị của s khi thực hiện đoạn chương trình trên bằng bao nhiêu?

Choose a suitable word or phrase (marked A, B, C or D) to fill in each blank.

Mrs. Henderson doesn’t go to work today, because her son has a bad cold. She has to stay at home and _________ him.

Read the following passage about Key to Addressing Poverty, Gender Disparities, and Environmental Challenges 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.

Social issues are problems that affect a large number of people in society, often creating inequality and hardship. One of the most significant social issues today is poverty. (18)_________, such as food, shelter, and education. In many parts of the world, (19)_________, with families trapped in a cycle of deprivation. While poverty is a complex issue, it is often connected to factors like unemployment and lack of access to education. These factors make it hard for individuals to escape the cycle and improve their lives. To address poverty, governments and organizations must create sustainable policies that focus on education, healthcare, and employment opportunities.

Another pressing issue is gender inequality. In many countries, women still face discrimination in areas like employment and education, limiting their opportunities for personal and economic growth. Even in developed nations, women earn less than men for doing the same work. (20)_________, as people demand equal rights and opportunities for all genders. Moreover, gender inequality can also affect women's health and safety, (21)_________.

Finally, environmental degradation, like pollution and climate change, is a growing global concern. Environmental damage, (22)_________, especially in poorer regions, often affects them the most. The increasing frequency of natural disasters, caused by climate change, is also putting immense pressure on vulnerable populations. Tackling these issues requires a collective effort from both individuals and governments. Only through cooperation and sustainable practices can we hope to create a more equitable and livable world for future generations.

Cho \(\text{sin}\alpha =\frac{3}{5}\) với \({{90}^{\circ }}<\alpha <{{180}^{\circ }}\).

Hoạt động nào sau đây không phải hoạt động sản xuất?

Chủ tịch nước có thể uỷ nhiệm cho ai thực hiện 1 số nhiệm vụ thay thế cho mình?

Các giá trị lôgic “Đúng” và “Sai” được thể hiện lần lượt trong đại số lôgic bởi số nào?

Gồm 1 - 2 xí nghiệp riêng lẻ, phân bố gần vùng nguyên nhiên liệu và đồng nhất với một điểm dân cư là đặc điểm nổi bật của tổ chức lãnh thổ nào?

Read the following passage about Wildlife Conservation in Africa 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.

Wildlife conservation in Africa is vital for preserving biodiversity and ensuring the survival of iconic species such as elephants, lions, and rhinos. [I] The continent is home to some of the world’s most diverse ecosystems, including savannahs, rainforests, and deserts. [II] Conservation efforts involve strategies like protecting habitats, combating poaching, and raising awareness about the importance of wildlife. [III] Despite challenges, success stories demonstrate the positive impact of these efforts. [IV]

One notable example comes from Kenya, where anti-poaching initiatives and community engagement have helped stabilize elephant populations in Amboseli National Park. Similarly, in South Africa, rhino conservation programs use advanced technologies like drones and GPS tracking to monitor and protect vulnerable animals. These efforts not only safeguard wildlife but also promote eco-tourism, which supports local economies.

However, wildlife conservation in Africa faces persistent threats. Habitat loss due to agricultural expansion and urbanization continues to endanger species. Climate change exacerbates these challenges, altering migration patterns and threatening ecosystems. Furthermore, poaching and the illegal wildlife trade remain significant concerns, driven by global demand for products such as ivory and rhino horn.

To overcome these challenges, conservationists emphasize the need for international collaboration and local community involvement. Initiatives like eco-tourism provide financial incentives for communities to protect wildlife. Governments, NGOs, and individuals must work together to ensure the survival of Africa’s unique species for future generations.

Which of the following best summarizes paragraph 2? 

Một bánh xe quay đều 100 vòng trong 2s. Chu kì quay của bánh xe là

Cho hàm số \(f(x)=-x^{3}+m x^{2}-\left(m^{2}+m+1\right) x\). Với \(m\) là tham số thực.

Với \(m=2\) thì giá trị nhỏ nhất của hàm số \(y=f(x)\) trên đoạn \([0; 4]\) bằng:

Hệ thống các quan hệ kinh tế mang tính tự điều chỉnh tuân theo yêu cầu của các quy luật kinh tế như: quy luật cạnh tranh, cung cầu, giá cả, lợi nhuận,...chi phối hoạt động của các chủ thể kinh tế được gọi là gì?