Cho \({\rm{A = \{ }}x \in \mathbb{N},\,(2x - {x^2})(2{x^2} - 3x - 2) = 0\} \) và \({\rm{B = \{ n}} \in \mathbb{N},\,3 < {n^2} < 30\} \). Tìm kết quả phép toán \[{\rm{A}} \cap {\rm{B}}\].

Phép toán logic nào là KHÔNG đúng?

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

Mai: "How fashionable a pair of trainers you have!”
Nam: "_________________."

Nhận định nào dưới đây phản ánh đúng đặc điểm trong văn hóa tiêu dùng của người Việt?

Read the following passage about endangered languages and mark the letter A, B, C or D on your answer sheet to indicate the best answer to each of the following questionsfrom 23 to 30.

The Koromi trend has taken social media by storm, influencing fashion, lifestyle, and online communities worldwide. Originating in Japan, Koromi is characterized by a unique blend of gothic aesthetics, cute elements, and bold self-expression. Unlike mainstream kawaii culture, which emphasizes bright colors and cheerful themes, Koromi embraces darker shades, punk influences, and a rebellious attitude. This fusion of edginess and playfulness has resonated with many young people looking for an alternative form of self-representation.

Social media platforms like TikTok and Instagram have played a crucial role in popularizing the trend, as influencers and fashion enthusiasts share their interpretations of the Koromi style. The trend's rise is also linked to a growing appreciation for individuality and alternative fashion in contemporary youth culture.

Beyond fashion, the Koromi trend has influenced makeup styles, accessories, and even music preferences. Many followers of this aesthetic incorporate dark eyeliner, edgy clothing, and playful accessories to create a distinctive look. As more people adopt the Koromi lifestyle, brands have started releasing special collections inspired by the trend. However, some critics argue that the commercial adoption of Koromi dilutes its original meaning and turns it into a passing fad rather than a genuine subculture.

While Koromi's popularity continues to grow, it remains a niche trend compared to mainstream fashion movements. Its impact, however, is undeniable, as it encourages self-expression and challenges conventional beauty standards. Whether it will evolve into a long-lasting cultural phenomenon or fade away as another internet-driven craze remains to be seen.

The word "Their" in paragraph 2 refers to: 

Trong buổi đầu thời đại kim khí, kim loại nào được sử dụng sớm nhất?

Tác phẩm nào sau đây KHÔNG thuộc phong trào thơ mới?

Read the following passage about urbanization 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.

It's a widely held belief that cities harm the environment. For this reason, many developing countries have imposed restrictions on the movement of people from rural to urban areas and on the size of large cities. But there are problems with this viewpoint. Urbanization that is properly controlled can benefit the environment in a number of ways.

First, urbanization is a highly productive force due to the combination of economies of scale and positive externalities. Over 5.5 times as much is produced in Asia's cities as in its rural areas. Urban agglomeration makes it possible to use fewer resources to produce the same amount of work as non-urban areas. Urbanization therefore reduces the environmental impact. Urbanization is necessary because the service sector depends on a concentration of clients. The growth of service industries, which typically generate less waste than manufacturing, is another environmentally beneficial aspect of urbanization.

Second, for any given population, high urban density has no effect on the environment. According to urban economics studies, density is one of the most significant factors influencing energy consumption. In places with a high population density, public transportation may be more convenient and quicker. City dwellers are more likely to walk or ride a bike instead of drive. Third, the construction, upkeep, and operation of environmentally friendly public services and infrastructure, such as waste management, sanitation, and piped water, are considerably simpler and less expensive in urban areas. More people can now afford to use eco-friendly facilities and services thanks to urbanization.

Fourth, urbanization is driving the development of new technologies, including eco-friendly ones. Eco-friendly vehicles, utilities, and equipment are essential to the green economy's long-term survival. Asia's enormous market will support green innovations in cities because the region's enormous population will provide entrepreneurs with many incentives and opportunities to invest in the development of energy-efficient products. Last but not least, the improved standard of living brought about by urbanization has improved access to housing, food, healthcare, and education. Cities with more residents can invest more in infrastructure, which reduces traffic and improves public health. Urbanization fosters pro-environmental attitudes, especially among middle-class property owners, which greatly aid in the introduction and enforcement of environmental laws and regulations.

Any expanding city will inevitably incur expenses. People are moving in large numbers to Asian cities, and many companies have opened offices there to capitalize on this trend. Examples of industrial operations that contribute to urban sprawl and harm the environment include the generation of electricity, transportation, construction, trash, and waste disposal. Both the advantages and disadvantages of urbanization should be taken into account when assessing its effects on the environment.

Which of the following does the writer mention about elements impacting power usage?

Ở người và động vật, chức năng bảo vệ cơ thể chống lại các tác nhân gây bệnh do đâu?

Em hãy cho biết phát biểu nào sau đây là sai?

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.

Which of the following best summarises paragraph 3?

Phương pháp nào sau đây là phương pháp chủ động tác động vào đối tượng nghiên cứu và những hoạt động của đối tượng đó nhằm kiểm soát sự phát triển của chúng một cách có chủ đích?

Thủ pháp nghệ thuật đặc sắc trong hai câu cuối bài thơ Thu điếu?

Trong trường hợp dưới đây, các cơ sở sản xuất đã thực hiện chức năng gì của thị trường?

"Vào mùa khai trường, các cơ sở sản xuất đã đầu tư theo công nghệ in ấn mới để có thêm những sản phẩm văn phòng phẩm sinh động, hữu ích phục vụ thị trường sử dụng bút, thước, tập vở học sinh tại địa phương".

Nhận định nào sau đây là không đúng khi nói đến việc: trong cuộc sống hàng ngày chúng ta đã và đang bắt gặp lịch sử ở khắp mọi nơi?

Although noise, commonly defined as unwanted sound, is a widely recognized form of pollution, it is very difficult to measure because the discomfort experienced by different individuals is highly subjective and, therefore, variable. Exposure to lower levels of noise may be slightly irritating, whereas exposure to higher levels may actually cause hearing loss. Particularly in congested urban areas, the noise produced as a by-product of our advancing technology causes physical and psychological harm, and detracts from the quality of life for those who are exposed to it.

Unlike the eyes, which can be covered by the eyelids against strong light, the ear has no lid, and is, therefore, always open and vulnerable; noise penetrates without protection. Noise causes effects that the hearer cannot control and to which the body never becomes  accustomeLoud noises instinctively signal danger to any organism with a hearing mechanism, including human beings. In response, heartbeat and respiration accelerate, blood vessels constrict, the skin pales, and muscles tense. In fact, there is a general increase in functioning brought about by the flow of adrenaline released in response to fear, and some of these responses persist even longer than the noise, occasionally as long as thirty minutes after the sound has ceased.

Because noise is unavoidable in a complex, industrial society, we are constantly responding in the same way that we would respond to danger. Recently, researchers have concluded that noise and our response may be much more than an annoyance. It may be a serious threat to physical and psychological health and well-being, causing damage not only to the ear and brain but also to the heart and stomach. We have long known that hearing loss is America's number one nonfatal health problem, but now we are learning that some of us with heart disease and ulcers may be victims of noise as well. Fetuses exposed to noise tend to be overactive, they cry easily, and they are more sensitive to gastrointestinal problems after birth. In addition, the psychic effect of noise is very important. Nervousness, irritability, tension, and anxiety increase affecting the quality of rest during sleep, and the efficiency of activities during waking hours, as well as the way that we interact with each other.

Which of the following statements would the author most likely support?

Read the following passage about humanoid robots 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.

The average life expectancy in Vietnam is approximately 71 years for men and 76.4 years for women. This gender disparity is often attributed to differences in lifestyle and health-related behaviors. Women generally exhibit healthier habits, such as consuming less alcohol, smoking less frequently, maintaining a balanced diet, and paying greater attention to their physical well-being.  However, life expectancy is shaped by a variety of additional factors  . For instance, individuals residing in economically disadvantaged regions often face limited access to healthcare services, nutritious food, and opportunities for rest or physical activity , which can significantly reduce their lifespan. Educational attainment also plays a crucial role. Research indicates that individuals with higher education levels tend to live, on average, three years longer than those without a university degree. This is likely due to improved socio-economic conditions associated with higher education, such as better employment prospects and access to resources that promote health. Furthermore, benefiting from advances in medicine and medical technology people can lead a healthier and safer life, which results in enhanced life expectancy. Ultimately, lifestyle choices are critical determinants of longevity. It is crucial for individuals to adopt healthy habits, such as maintaining a nutritious diet that provides essential nutrients, and avoiding harmful behaviors like smoking, which brings about a wide range of both physical and mental changes in people’s health, leading to a longer expectancy.

Trong những năm chiến tranh thế giới thứ nhất, phong trào Hội kín ở Nam Kì hoạt động dưới hình thức nào?