Sự kiện nổi bật nhất năm 1889 ở Nhật Bản là:

Cho hàm số \({\rm{f}}({\rm{x}}) = {\rm{a}}{{\rm{x}}^3} + {\rm{b}}{{\rm{x}}^2} + {\rm{cx}} + {\rm{d}}({\rm{a}},{\rm{b}},{\rm{c}},{\rm{d}} \in \mathbb{R},{\rm{a}} \ne 0)\) có bảng xét dấu của đạo hàm dưới đây

Hàm số đã cho đồng biến trên khoảng

Một trong những ý nghĩa của sự xuất hiện công cụ bằng kim loại là:

Cuộc cách mạng nào dưới đây trở thành cốt lõi của cuộc cách mạng khoa học- công nghệ diễn ra từ những năm 70 của thế kỉ XX? 

Trong CSDL music ở bảng ban_thu_am trong thẻ Indexes đang được hiết lập như hình dưới đây, em hãy quan sát hình và cho biết để xoá bỏ hết cùng lúc các thiết lập khoá trong thẻ Indexes ta nháy chuột vào nút nào?

Read the following passage about education in Nepal 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. 

A few years ago, amid a record drought, scientists noticed something odd. A few of California’s giant sequoias inside Sequoia and Kings Canyon National Parks were dying in ways no one had ever documented – from the top down. When researchers climbed into the canopies, they discovered that beetles had bored into a few branches. By 2019, at least 38 of the trees had died – not a large number, but "concerning because we’ve never observed this before,” says Christy Brigham, the park’s chief of resource management.

Scientists had assumed that stately sequoias, with their bug-repelling tannins, were immune to dangerous pests. Worried experts are investigating whether some mix of increased drought and wildfire, both worsened by climate change, have now made even sequoias susceptible to deadly insect invasions.

If so, these ancient sentinels would be just the latest example of a trend experts are documenting around the world: Trees in forests are dying at increasingly high rates—especially the bigger, older trees. According to a study in the journal Science, the death rate is making forests younger, threatening biodiversity, eliminating important plant and animal habitat, and reducing forests’ ability to store excess carbon dioxide generated by our consumption of fossil fuels. [A]

There is no single direct cause. Decades of logging and land clearing play a role, scientists say. But increasing temperatures and rising carbon dioxide from the burning of fossil fuels have significantly magnified most other causes of tree death. Scientists are documenting longer and harsher droughts, more severe outbreaks of insects and disease, and increasingly catastrophic wildfires.

With 60,000 known tree species on Earth, those shifts are playing out differently across the planet. In central Europe, for instance, “You don’t have to look for dead trees,” says Henrik Hartmann, with Germany's Max Planck Institute for Biogeochemistry. “They’re everywhere.” In one recent year, following a week of excessive heat, hundreds of thousands of beech trees dropped their leaves. Even in colder regions, “You get a couple of hot years and the forests are suffering,” says Hartmann. “There are individual species that are being driven beyond the threshold of what they can handle.” [B]

Just last year, massive fires marched through a dry Australia, smoldered across 7.4 million acres in northern Siberia, and focused the world’s attention on blazes in the Amazon.

The consequences of all these changes around the world are still being assessed. The first national look at tree mortality in Israel showed vast stretches disappearing, thanks largely to scorching heat and wildfires. [C] In a country largely blanketed by stone and sand, forests mean a great deal. Trees support nests for eagles and habitat for wolves and jackals. They hold soil with their roots. [D]

“We’re dealing with a very tough situation. It’s a race to the unknown,” says Tamir Klein at the Weizmann Institute of Science.

What does ‘these ancient sentinels’ in paragraph 3 refer to?

Each of the following sentences has one error (A, B, C, or D). Find it and blacken your choice on your answer sheet.

After dogs, the cats have had the closest relationship with humans.

Hô hấp sáng xảy ra với sự tham gia của những bào quan nào?

(1) Lysosome

(2) Ribosome

(3) Lục lạp

(4) Peroxisome

(5) Ti thể

(6) Bộ máy Golgi

Điều kiện để tam thức bậc hai \(a{x^2} + bx + c(a \ne 0)\) nhận giá trị âm với mọi \(x \in \mathbb{R}\) là?

Nguyên nhân nào dẫn đến đời sống của nông dân Việt Nam này càng bần cùng trong những năm Chiến tranh thế giới thứ nhất?

Read the following passage about Building Understanding Across Nations 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.

In our interconnected world, cultural ambassadors play a vital role in bridging the gaps between different nations and peoples. These dedicated individuals and groups serve as links between cultures, fostering mutual understanding and respect through various activities and programs. Their mission is to showcase their own cultural heritage while learning about and appreciating others, creating pathways for meaningful dialogue and lasting connections across borders.

Cultural ambassadors employ numerous methods to achieve their goals. They organize traditional festivals and art exhibitions that display unique customs, allowing visitors to experience different cultures firsthand. Language exchange programs enable people to communicate more effectively, while cultural workshops teach traditional crafts, music, and dance. These ambassadors also utilize digital platforms to reach wider audiences, sharing stories and traditions through social media and online events that connect people from different corners of the world.

Despite their important work, cultural ambassadors face several challenges in their mission. Stereotypes and prejudices can create barriers to understanding, while language differences sometimes lead to misunderstandings. Limited resources and funding may restrict their activities, and political tensions between nations can complicate their efforts. However, these dedicated individuals persist in their work, believing that personal connections and shared experiences can overcome these obstacles and promote harmony among different communities.

Looking ahead, the role of cultural ambassadors becomes increasingly significant in our global society. Their efforts to build bridges between nations contribute to reducing conflicts and fostering peace. Through their continued dedication to promoting cross-cultural understanding, these ambassadors help create a more inclusive and connected world where differences are celebrated rather than feared. This ongoing process of cultural exchange remains essential for building a future based on mutual respect and cooperation.

The word “tensions” in paragraph 3 could be best replaced by _________.

Tính quyền lực về tổ chức và hoạt động của bộ máy nhà nước Cộng hoà xã hội chủ nghĩa Việt Nam thể hiện qua nội dung nào sau đây?

Mục tiêu và nguyên tắc hoạt động của tổ chức Liên hợp quốc đều được quy định rõ trong văn kiện

Cho \(\overrightarrow{AB}=-\overrightarrow{CD}\).

Đọc đoạn trích sau và trả lời câu hỏi:

     Hoa nhài gọi mùa hè về từ những buổi tối ngát hương khi những đám mây còn mơ ngủ chưa chịu thức lên cùng hồi sấm và chớp loé phía chân trời. Loa kèn không còn mang cái loa ra kêu gọi mùa xuân ở lại, mà mùa xuân đã tự thấy mình già, muốn được nghỉ ngơi sau khi vắt kiệt sức mình vào hoa đào và mưa bụi giăng giăng. Ta đã thấp thoáng nghe trong mình thèm một bát canh cua rau mùng tơi, kèm quả cà pháo giòn tan. Những nghệ sĩ vĩ cầm còn đang tìm đường trở lại dương gian trên những gốc cây một mùa lặng lẽ. Đôi cánh mỏng có những đường gân như cánh chuồn chuồn, giây lát thành hình từ cái bụng nứt đôi của một loài sâu giống hệt con dế chũi. Mấy hôm nữa thôi, một tiếng cất lên, một dàn âm thanh âm vang cứ như mọi chiếc lá xanh mới sinh ra từ hôm xuân đến, đều biết hát lên tiếng nói của màu xanh diệp lục, màu đỏ hoa phượng, màu tím bằng lăng mà loài người dù thông minh đến đâu cũng không thể hoá thân, không thể tàng hình như thế. Ta gối đầu lên mùa hè khi trong chiếc gối kia ẩn kín một nhánh nhài khiêm nhường suốt đêm phảng phất.

(Băng Sơn, Hương đầu hè, in trong Tuyển tập truyện ngắn, 2012)

Yếu tố trữ tình trong đoạn trích trên được thể hiện qua chi tiết nào?

Read the following passage about the impact of social media on mental health 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] In recent years, social media platforms have become a central part of daily life, offering users countless ways to connect, share, and communicate. [II] While these platforms offer many advantages, experts have noted rising concerns about their effects on mental health, particularly among young people (Smith & Anderson, 2018). [III] Studies reveal that excessive social media use can contribute to feelings of anxiety, depression, and loneliness, despite its intention to promote connection and social interaction (Twenge & Campbell, 2019). [IV]

A primary reason for these mental health concerns is the tendency for social media users to compare themselves to others. Platforms like Instagram and Facebook often highlight idealized lifestyles, leading users to feel inadequate about their own lives. Additionally, the constant notifications and messages contribute to a "fear of missing out," or FOMO, which keeps individuals in a cycle of checking their phones, often reducing the quality of sleep and overall well-being.

There is also a growing body of research suggesting a link between social media use and decreased attention spans. When users frequently switch between apps and notifications, their ability to focus for extended periods may diminish (Rosen, 2019). This shift in attention can interfere with productivity, especially in academic and professional settings, where sustained focus is essential.

Addressing these challenges requires a multi-faceted approach. Some mental health professionals suggest limiting screen time and setting boundaries, such as "device-free" hours before bedtime. Others recommend engaging in offline activities, like reading or exercising, to reduce dependence on social media and build healthier habits. According to psychologists, such strategies can enhance mental resilience and allow for more meaningful, balanced relationships (Robinson & Smith, 2020).

According to paragraph 2, which of the following is NOT an effect of social media on mental health?

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

Read the following passage about Global Challenges Requiring Diverse Solutions 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.

Climate change affects everyone on our planet, but different communities experience its impacts in unique ways. (18)_________. This traditional wisdom, which connects deeply with nature, can help us find better solutions to environmental problems. If we had started addressing climate change earlier, many environmental disasters could have been prevented. The effects of global warming are now visible in many regions around the world, from melting ice caps to increasing droughts and floods. These changes threaten not only ecosystems but also cultural practices tied to specific environments. Many coastal communities (19)_________, and ancient cultural sites are being damaged by extreme weather events. When diverse communities work together, sharing their unique perspectives and knowledge, innovative climate solutions emerge. Different cultural approaches to agriculture, water conservation, and energy use can inspire new ways of thinking about sustainability. Climate solutions must be culturally appropriate; (20)_________. By combining traditional wisdom with modern science, we create more effective strategies for addressing climate challenges. Communities around the world are already implementing these multicultural approaches, demonstrating (21)_________. People want immediate action on climate change; however, governments often move slowly on environmental policies. Scientists study climate patterns and develop new technologies, (22)_________. The path forward requires collaboration across cultures, disciplines, and borders. Only through inclusive dialogue and shared responsibility can we build a sustainable future that honors both human diversity and our common home.

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