Khoảng cách giữa hai điểm cực trị của đồ thị hàm số \(y=(x-2)^{2}(x+1)\) là

Cho parabol \(y = a{x^2} + bx + c\) có đồ thị như hình vẽ dưới đây. Khẳng định nào dưới đây đúng?

Chính phủ có quyền hạn gì?

Cương lĩnh chính trị đầu tiên (đầu năm 1930) xác định tính chất cuộc cách mạng giải phóng dân tộc ở nước ta là

Dựa vào hiểu biết của bản thân, đâu không phải là phần mềm chống phần mềm độc hại?

Cho hàm số bậc bốn \(f(x)\). Đồ thị hàm số \(y={{f}^{\prime }}(x)\) như hình vẽ.

Hàm số \(g(x)=f(x)+4x\) đồng biến trên khoảng nào?

Yếu tố nào dưới đây đã được sử dụng để làm tăng tốc độ phản ứng khi rắc men vào tinh bột đã được nấu chín (cơm, ngô, khoai, sắn) để ủ rượu?

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 the following questions from 13 to 17

a. Linda: They all sound fun. I'll try to join all of them if I can.

b. Nam: I can see it on the map. It's an open booth and it looks huge! Visitors can play Vietnamese traditional games such as tug of war and bamboo dancing.

c. Linda: But where's the Vietnamese booth?

Read the following advertisement 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 1 to 6.

Biosphere 2025: Where Your Home Breathes With The Planet

The people (1)_________ in Biosphere homes report improved health and lower utility bills. Never (2)_________ off until tomorrow what you can do today for our planet!

Visit our showroom (3)_________ how Biosphere technology can transform your home. Our (4)_________ system removes 99.9% of pollutants while connecting to your smartphone.

We handed customers (5)_________ to our specialists for personalized consultations. (6)_________ design your space with eco-friendly materials that last for generations.

Biosphere 2025 - Your home's natural connection to Earth!

Limited time offer: 15% discount on all smart home installations before June 30th!

Website: www.biosphere2025.com

Call: (555) 987-6543

Email: connect@biosphere2025.com

Xã hội bắt đầu phân chia giai cấp bắt nguồn từ đâu?

Để nhận biết đường glucose có thể dùng loại thuốc thử nào sau đây?

Đặt vào hai đầu một điện trở R = 20 Ω một hiệu điện thế U = 2 V trong khoảng thời gian t = 20 s. Lượng điện tích di chuyển qua điện trở là

Nội dung nào sau đây không phải là lịch sử của ngôi trường mà em đang học?

Read the following passage about powering 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 continue to face the impacts of climate change, having a green environment has become increasingly important to the future of our society. To achieve this, the world is shifting towards green energy, and two particular types of energy at the centre of this movement are solar power and wind power.

     [I] Solar power is all about harnessing the energy of the sun by using solar panels to convert sunlight into usable electricity. [II]. Moreover, solar panels are perfect for installation on a small scale, such as in private homes, since they require very little maintenance and have a long lifespan. [III] However, the ability to generate solar power depends on the time of day and weather conditions. This means that solar panels are often less useful if they are installed in places where sunny weather is not typical. [IV]

     Wind power, on the other hand, involves converting the energy of the wind into electricity using large turbines. Wind power doesn’t produce any greenhouse gases, but it is not ideal for private use since turbines require consistent care. However, wind farms can be installed on a large scale and are able to produce electricity continuously regardless of the time of day. This means that if there were more investments in wind power, it could be a viable way to provide energy for major cities and even for whole regions.

     Wind and solar power contribute significantly to a green environment by reducing our reliance on fossil fuels, helping us cut down on pollution and slow climate change. Additionally, using renewable energy sources helps promote spending on sustainable development by creating new career opportunities in the green energy sector.

     For now, the biggest challenge of adopting green energy is the costs associated with installation and infrastructure, but the benefits unquestionably outweigh the downsides. If we want to stop the climate crisis and create a better and more sustainable future, green energy sources will undoubtedly be the key.

Which of the following is TRUE according to the passage?

Lực nào đóng vai trò chính trong quá trình vận chuyển nước ở thân?

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.

Taking Home the World Cup

Standing just 36 centimeters tall, the FIFA World Cup Trophy symbolizes the pinnacle of football achievement.  Every four years, teams worldwide compete for it, but no one ever takes the trophy home. Made of 18-carat gold, the original trophy remains under FIFA's protection, with winners receiving only a replica. This measure safeguards it from theft, as the trophy has been stolen twice in its history.

The original trophy was made by a French sculptor, Abel LaFleur, and was called the “Jules Rimet Cup,” in honor of the founder of the World Cup tournament. Sometime during the first three World Cup events (1930, 1934, and 1938), the name changed to simply the “World Cup.” Then during World War II, not much was seen or heard of the trophy. It was being kept hidden in a shoe box under the bed of Dr. Ottorino Barassi, the Italian vice-president of FIFA, to prevent it from falling into the hands of the Nazi army. In 1966, the Cup was stolen during a public showing of the trophy prior to the World Cup tournament in England. Luckily, it was found a short time later, none the worse for wear, in a trash container by a little dog named Pickles. Four years later, Brazil earned permanent possession of the original trophy by winning its third World Cup title. Unfortunately, the trophy was stolen a second time in 1983 and was never recovered. The Brazilian Football Association had to have a duplicate trophy made.

(I) After the first trophy became the possession of Brazil’s football association, a new World Cup Trophy for FIFA was designed by an Italian artist, Silvio Gazzaniga, in 1974. (II) This trophy cannot be won outright, but remains in the possession of FIFA, and rest assured they are watching it very closely. Today, World Cup winners are awarded a replica of the trophy that is gold-plated, rather than solid gold like the real one. (III) Gazzaniga’s World Cup trophy weighs almost five kilograms. (IV) Its base contains two layers of a semi-precious stone called malachite, and has room for seventeen small plaques bearing the names of the winning teams---enough space to honor all the World Cup champions up to the year 2038. After that, a new trophy will have to be made.

The word "it" in paragraph 1 refers to:

Theo mô hình nguyên tử Rutherford – Bohr, electron thuộc lớp nào sau đây có năng lượng thấp nhất?

Bước nào sau đây đề xuất số lượng tối đa các giải pháp có thể, bám sát với yêu cầu, tiêu chí đã nêu?

Nhận định nào đúng khi nói về sự hấp thụ các chất ion khoáng vào cây theo cách chủ động?

Thiết bị thông minh là một hệ thống như thế nào?

Read the passage carefully. Choose an option (A, B, C, or D) that best answers each question from to 646 to 650:

1. Millions of people are using cellphones today. In many places, it is actually considered unusual not to use one. In many countries, cellphones are very popular with young people. They find that the phones are more than a means of communication - having a mobile phone shows that they are cool and connected.

2. The explosion in mobile phone use around the world has made some health professionals worried. Some doctors are concerned that in the future many people may suffer health problems from the use of mobile phones. In England, there has been a serious debate about this issue. Mobile phone companies are worried about the negative publicity of such ideas. They say that there is no proof that mobile phones are bad for your health.

3. On the other hand, medical studies have shown changes in the brain cells of some people who use mobile phones. Signs of change in the tissues of the brain and head can be detected with modern scanning equipment. In one case, a traveling salesman had to retire at young age because of serious memory loss. He couldn't remember even simple tasks. He would often forget the name of his own son. This man used to talk on his mobile phone for about six hours a day, every day of his working week, for a couple of years. His family doctor blamed his mobile phone use, but his employer's doctor didn't  agree.

4. What is it that makes mobile phones potentially harmful? The answer is radiation. High-tech machines can detect very small amounts of radiation from mobile phones. Mobile phone companies agree that there is some radiation, but they say the amount is too small to worry about.

5. As the discussion about their safety continues, it appears that it's best to use mobile phones less often. Use your regular phone if you want to talk for a long time. Use your mobile phone only when you really need it. Mobile phones can be very useful and convenient, especially in emergencies. In the future, mobile phones may have a warning label that says they are bad for your health. So for now, it's wise not to use your mobile phone too often.

What does the word “they” in paragraph 2 refer to?