Phân tử S₈ có 128 electron, hỏi số hiệu nguyên tử của lưu huỳnh (S) là bao nhiêu?

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

Cặp đồ thị nào ở hình dưới đây là của chuyển động thẳng đều?

Read the following passage 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.

Mountain Lions Amid Wildfires: A Struggle for Survival

Beth Pratt, the California director for the National Wildlife Federation, has spent her career protecting Los Angeles’ mountain lions. These top predators live in a rocky area surrounded by fancy houses and many roads. When wildfires destroy vast stretches of open land, the survival options for these animals become critically limited. “This is the LA area—these mountain lions can’t just move into the Kardashians’ backyard,” Pratt says, her voice filled with concern for the animals in such a difficult situation.

(I) The chaparral vegetation, covering about 10% of California, is one of the world’s most flammable ecosystems. (II) In Los Angeles, suburban sprawl intrudes on these areas, blocking wildlife escape routes. (III)Fires strip the land of food and shelter, transforming vibrant ecosystems into barren landscapes. (IV) Pratt highlights the urgency of the situation, explaining how areas that once supported life are now “taken out of commission,” leaving many species to starve or struggle for survival.

The consequences extend beyond wildlife. Wildfires have caused devastating human losses, with 88,000 people evacuated and a rising death toll of 25. Meanwhile, the non-human world suffers equally, particularly endangered species with limited ranges. Red-legged frogs, reintroduced into Santa Monica streams in 2014, are among the most affected, with their habitats repeatedly destroyed. The Woolsey Fire of 2018 was followed by mudslides that wiped out much of the region's delicate ecosystem, and scientists fear similar outcomes this time. California newts, reptiles, and snakes are also at high risk, while mammals and birds, although more likely to escape, face challenges in finding food and shelter as the ecosystem bounces back.

Despite the devastation, hope remains. The chaparral is a fire-adapted ecosystem, and life often endures beneath the soil. Seeds can survive and germinate quickly, with grasses sprouting weeks after the first rain. Shrubs may take up to a decade to recover, depending on rainfall. Prof. Stefan Doerr, an expert on wildfires, emphasizes the resilience of this landscape, noting its evolutionary adaptation to high-intensity fires occurring every 30 to 100 years. While the aftermath looks bleak, these fires play a role in maintaining biodiversity, offering a glimmer of hope for recovery.

Which of the following best summarizes the main point of the passage?

Đâu là một trong những chức năng của thị trường?

Cừu Đôly là động vật có vú đầu tiên được nhân bản vô tính trên thế giới được tạo ra từ tế bào sinh dưỡng trưởng thành, nhờ áp dụng phương pháp chuyển nhân. Nó được tạo ra bởi Ian Wilmut, Keith Campbell và các cộng sự tại viện Roslin ở Edinburgh, Scotland. Việc tạo ra cừu Đôly đã chứng tỏ rằng một tế bào được lấy từ những bộ phận cơ thể đặc biệt có thể tái tạo được cả một cơ thể hoàn chỉnh. Quy trình nhân bản được thể hiện ở sơ đồ sau:

Vào năm 2003, khi được sáu tuổi, Đôly mắc một chứng bệnh phổi phức tạp vốn chỉ thấy có ở những con cừu nhiều năm tuổi và người ta phải làm nó chết một cách nhẹ nhàng. Cái chết sớm của cừu Đôly có thể phản ánh một sự tái lập trình hoá không hoàn toàn của nhân gốc được chuyển.

Việc tạo ra cừu Đôly là thành tựu của việc ứng dụng công nghệ nào?

Phương trình tổng quát của đường thẳng đi qua điểm \(A(1; - 3)\) và có vectơ pháp tuyến \(\vec n(2; - 1)\) là?

Đông Nam Á là cầu nối lục địa nào?

Mark the letter A, B, C, or D on your answer sheet to indicate the correct option that best fits each of the numbered blanks from 18 to 23.

       Music brings many benefits to our lives, especially when we learn something new. Firstly, it makes learning more enjoyable. When we listen to music while studying, it can help us feel relaxed and happy. (18) _______. For example, if you are learning a new language, listening to songs in that language can help you understand and remember words better.

       Secondly, music helps us focus. (19) _______, our mind becomes less distracted. We can concentrate better on our tasks, whether it’s reading, writing, or solving problems. This is because music has a special way of grabbing our attention and (20) _______.

       Finally, music connects us with other cultures. Through music, we can learn about the traditions, feelings, and (21) _______. It’s like traveling to new places without leaving (22) _______. We can hear different instruments, rhythms, and voices that tell us about the rich diversity of our world.

       In summary, music is not just about entertainment. It helps us learn better, stay focused, and (23) _______. It’s a powerful tool that can make our learning journey more exciting and rewarding.

Cho các nguyên tử sau: B (Z = 8, A = 16), D (Z = 9, A = 19), E (Z = 8, A = 18), G (Z = 7, A = 15). Trong các nguyên tử trên, các nguyên tử nào thuộc cùng một nguyên tố hoá học?

Những phát biểu nào sau đây là đúng?

Đọc đoạn tư liệu sau đây:

“Theo thống kê của cơ quan ngân sách Quốc hội Mỹ, trong những năm đầu thế kỉ XXI, thu nhập của nhóm hộ gia đình có thu nhập cao nhất chiếm tới 53,5% tổng thu nhập cả nước. Tính riêng 1% nhóm giàu nhất chiếm 16,3% tổng thu nhập cả nước. Khoảng 60% hộ gia đình có thu nhập thấp nhất chỉ chiếm 10% tổng thu nhập toàn quốc.”

(Trần Thị Vinh, Chủ nghĩa tư bản: Lịch sử thăng trầm 120 năm (1900 – 2020), NXB Chính trị Quốc gia Sự thật, Hà Nội, 2020, tr.489)

Phong trào Tây Sơn mang tính chất 

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 questions from 13 to 17.

a. Tom: Hi, Anna! Yeah, I’ve been going to the gym regularly.

b. Anna: Hi, Tom! Have you been working out? You look great!

c. Anna: It shows! Keep it up, you’re doing awesome!

Nhằm mục đích phát triển bền vững trong công nghiệp năng lượng, Hoa Kì tập trung phát triển năng lượng nào?

Số điểm chung của Parabol \((P):y = {x^2} - 3x + 5\) với trục hoành là?

Read the following passage about the The Importance of Social Media in Modern 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.

In the 21st century, social media has become a crucial element of everyday life[I]. Platforms such as Facebook, Twitter, Instagram, and TikTok link individuals around the world, [IV]. Although some may critique social media for promoting negativity, it is important to acknowledge its numerous positive effects on society[III]. This essay will delve into the importance of social media, its influence on shaping public perception, and the challenges it poses.[II]

One of the primary benefits of social media is its ability to foster communication and connection. People can maintain relationships with friends and family, regardless of geographical barriers. This aspect is particularly vital for those who live far away from loved ones. For example, a student studying abroad can easily share their experiences with family through posts, photos, and video calls. Furthermore, social media enables individuals to connect with like-minded people and build communities around shared interests or causes. Activist groups, for instance, often use social media platforms to rally support for important issues, raising awareness and mobilizing action more efficiently than traditional methods.

Moreover, social media serves as a powerful tool for information dissemination. News spreads rapidly through these platforms, allowing individuals to stay informed about current events. During emergencies, such as natural disasters, social media can provide crucial information in real time, helping people stay safe and informed. However, this rapid dissemination of information also raises concerns about the accuracy and reliability of the content being shared. Misinformation can spread just as quickly as legitimate news, leading to confusion and mistrust.

Despite the challenges posed by misinformation, social media plays a significant role in shaping public opinion. People often turn to these platforms to voice their opinions and engage in discussions on various topics. For instance, political debates and social movements frequently gain traction through social media, allowing individuals to express their views and influence others. This democratization of discourse can empower marginalized voices and facilitate social change. However, it is crucial to approach online discussions critically, as echo chambers can form, reinforcing existing beliefs rather than encouraging open dialogue.

In conclusion, while social media presents challenges such as misinformation and polarized discussions, its positive contributions to communication, information dissemination, and social activism cannot be overlooked. As society continues to evolve, it is essential to harness the potential of social media while being mindful of its pitfalls. By promoting responsible use and critical thinking, we can maximize the benefits of social media and foster a more connected and informed society.

Which of the following best summarises paragraph 3?