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

Nhận định nào sau đây đúng về phân bố dân cư nước ta hiện nay?

Sau Chiến tranh lạnh, Mĩ không thể thực hiện ý đồ thiết lập trật tự thế giới “đơn cực” vì lý do nào sau đây?

Một vật nổi được trên bề mặt chất lỏng là do

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 36 to 40.

Parents of a Tokyo elementary school are up in arms at being asked to pay 730 dollars for their child's school uniform. A public elementary school in Tokyo's upmarket Ginza district has decided to adopt new school uniforms designed by the luxury Italian designer Armani. The bespoke uniforms, which include a hat and bag, are priced at over 80,000 (730 dollars) each. Parents are angry at the school's decision and are protesting at what they view as the exorbitant price for a uniform of an eight-year-old child. The school said it wanted a designer uniform that represented the rich area of Ginza. School officials visited top department stores and decided to ask the fashion brand Armani to design the uniform.

The expensive uniform has created such a fuss that it has been discussed in Japan's parliament. One lawmaker said that since the school is public and not private, "a certain price range needs to be considered". Finance Minister Taro Aso said. "Clearly it's expensive. It would be tough if a student could not afford to pay for it." Japan's education minister said steps would be taken to ensure the financial burden placed on parents for uniforms, "would not be excessive". Twitter users said young children are not interested in designer clothes. The school principal said. "With humility, I take the criticism that the explanation has been insufficient and not well-timed. I will go on explaining carefully to those concerned."

What does the passage mainly discuss?

Trên Trái Đất không có vòng đai nhiệt nào sau đây?

Acidic oxide thường là

Trong trường hợp nào ta cần tiến hành cập nhật hồ sơ học sinh của nhà trường?

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

The key to the success of the project is the dedication of the team, all of which worked tirelessly to meet the deadline.

Chọn ý đúng: Phương pháp phân tích và tổng hợp phân tích ưu nhược điểm và tổng hợp ra giải pháp mới được sử dụng ở bước?

Chủ chăn nuôi cá là ông H khi thấy sức tiêu thụ của các nước ngọt giảm mạnh đã chuyển sang nuôi các loại thủy hải sản khác để tăng thu nhập. Trong trường hợp trên, chức năng nào của thị trường đã được vận dụng?

Sự phân bố electron trong một orbital dựa vào nguyên lí hay quy tắc nào sau đây?

Read the passage carefully. Choose an option (A, B, C or D) that best answers each question from 23 to 30.

1. How do children learn about wildlife? And is what they learn the sort of thing they should be learning? It is my belief that children should not just be acquiring knowledge of animals but also developing attitudes and feelings towards them based on exposure to the real lives of animals in their natural habitats. But is this happening?

2. Some research in this area indicates that it is not. Learning about animals in school is often completely disconnected from the real lives of real animals, with the result that children often end up with little or no understanding or lasting knowledge of them. They learn factual information about animals, aimed at enabling them to identify them and have various abstract ideas about them, but that is the extent of their learning. Children's storybooks tend to personify animals as characters rather than teach about them.

3. For direct contact with wild and international animals, the only opportunity most children have is visiting a zoo. The educational benefit of this for children is often given as the main reason for doing it but research has shown that zoo visits seldom add to children's knowledge of animals – the animals are simply like exhibits in a museum that the children look at without engaging with them as living creatures. Children who belong to wildlife or environmental organizations or who watch wildlife TV programmes, however, show significantly higher knowledge than any other group of children studied in research. The studies show that if children learn about animals in their natural habitats, particularly through wildlife-based activities, they know more about them than they do as a result of visiting zoos or learning about them in the classroom.

4. Research has also been done into the attitudes of children towards animals. It shows that in general terms, children form strong attachments to individual animals, usually their pets, but do not have strong feelings for animals in general. This attitude is the norm regardless of the amount or kind of learning about animals they have at school. However, those children who watch television wildlife programs show an interest in and affection for wildlife in its natural environment, and their regard for animals in general is higher.

According to the third paragraph, which method is most effective for children to learn about animals?

Tri thức lịch sử có điểm gì tương đồng với nhận thức lịch sử?

Trong phân tử phospholipid có mấy đuôi kị nước?

Công nghệ mới ứng dụng trong sản xuất vaccine không gồm

H đã tư vấn cho bạn mình đến vay tiền ở một ngân hàng uy tín. Đến thời hạn, bạn của H không thể trả nổi tiền vì kinh tế gặp khó khăn nên đã bỏ trốn để không phải trả số tiền đó. Trong trường hợp trên, bạn của H đã vi phạm nghĩa vụ và trách nhiệm nào của người vay trong quan hệ tín dụng?

Hiện tượng nào là hệ quả chuyển động xung quanh Mặt Trời của Trái Đất?

Chất điểm dao động điều hòa có phương trình vận tốc v = 4πcos2πt (cm/s). Gốc tọa độ ở vị trí cân bằng. Mốc thời gian được chọn vào lúc chất điểm có li độ và vận tốc là:

Read the following passage about the urban shift 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] Landslides are a significant environmental challenge in the northern mountainous provinces of Vietnam, partiCularly during the rainy season. The region, characterized by steep slopes and heavy rainfall, is prone to this natural disaster, which poses serious threats to both the local population and infrastructure. [II] ln recent years, numerous landslides have occurred, often triggered by prolonged periods of heavy rain, resulting in devastating impacts on communities and livelihoods.

The mountainous terrain, combined with deforestation and improper land use, exacerbates the risk of landslides. [III] As farmers clear forests for agriculture, the natural vegetation that stabilizes the soil is lost, making slopes more susceptible to erosion. When heavy rains saturate the soil, it can quickly become unstable, leading to sudden and destructive landslides. [IV]

In response to this growing threat, local authorities and environmental organizations are taking proactive measures to mitigate the risks associated with landslides. Efforts include reforestation projects, improving drainage systems, and raising public awareness about safe practices du ring the rainy season. Additionally, advanced monitoring systems are being implemented to provide early warnings, allowing communities to evacuate before a disaster strikes.

Despite these efforts, the challenges remain significant, and ongoing education and support for sustainable land management practices are crucial for reducing the incidence and impact of landslides in northern Vietnam.

Which of the following best paraphrases the underlined part in paragraph 4?

Trong quá trình quang hợp, O₂ được giải phóng có nguồn gốc từ đâu?