Trong các cách biểu diễn electron vào các orbital của phân lớp 2p ở trạng thái cơ bản, hãy chọn cách phân bố đúng.

Có bao nhiêu giá trị nguyên của \(m\) để bất phương trình: \(\log _{2}^{2}x-2(m+2){{\log }_{2}}x+{{m}^{2}}+4m\le 0\) đúng với mọi \(x\in [2;4]\)?

(Nhập đáp án vào ô trống)

Cho hai biến cố A và B , với \(P(A)=\frac{3}{8}, P(B)=\frac{1}{2}, P(\overline{A B})=\frac{1}{5}\). Giá trị của \(P(A B)\) là?

Đơn vị của từ thông có thể là

Sáng nay mùa thu sang

Cha đưa con đi học

Sương đọng cỏ bên đường

Nắng lên ngời hạt ngọc

Lúa đang thì ngậm sữa

Xanh mướt cao ngập đầu

Con nhìn quanh bỡ ngỡ

Sao chẳng thấy trường đâu?

Hương lúa tỏa bao la

Như hương thơm đất nước

Con ơi đi với cha

Trường của con phía trước

Thu 1964

(Tế Hanh, Đưa con đi học, In trong Khúc ca mới, NXB Văn học, HN, 1966)

Người cha muốn nhắn gởi điều gì với con qua hai câu thơ sau?

Con ơi đi với cha

Trường của con phía trước.

Nội dung nào không phản ánh chính xác mục đích của việc các triều đại phong kiến nước ta đều thành lập xưởng thủ công nhà nước (quan xưởng), tập trung các thợ giỏi trong nước? 

Read the following leaflet 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 7 to 12.

ANNOUNCEMENT OF SCHOOL SPORTS DAY

The School Athletics Department is pleased ___(7)___:

● All athletes ___(8)___ to report at the school field by 08:00 AM on June 10.

● Each team must prepare and submit their entry list for each event. Each athlete is allowed to participate ___(9)___ three events.

● The school will ___(10)___ trophies and medals for the winners in each category.

● ___(11)___ you have any inquiries regarding the event schedule or rules, please contact the Athletics Department.

Typically, all the sports ___(12)___ are concluded by an award ceremony. After finishing all the activities, custom awards, incentives, and more should be given to appreciate the competitors and encourage them to improve.

Trong các dãy số $\left(u_n\right)$ sau đây, dãy số nào là cấp số nhân? 

Cho cấp số cộng \(\left( {{u}_{n}} \right)\), biết \({{u}_{1}}=2\), công sai \(d=-1\), tổng \(10\) số hạng đầu tiên của cấp số cộng trên bằng

Read of the following leaflet 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 7 to 12.

Different Paths, One Journey: Celebrating Humanity Together

A Global Cultural Festival

Join Our Celebration

Some people like busy city life, while (7)_________ enjoy quiet country living. We want to bring people together and help them (8)_________ each other.

The festival will show many (9)_________ of music from around the world. (10)_________ our plan, the event will last for three days.

The party will have many (11)_________ and fun activities for everyone. (12)_________ of the food will be there, with some of the dishes from different countries.

Things To Do:

Try foods from different countries

Watch dance shows

Learn simple words in new languages

Make friends from other places

Play games from around the world

Contact: hello@festival.org | 555-1234

"We are different but we are friends!"

Đầu tư nước ngoài không tăng nhanh trong ngành nào dưới đây?

She couldn’t imagine him ________ in front of such a large audience.

Người tiêu dùng thường có xu hướng mua nhiều hàng hóa và dịch vụ khi nào?

Bạn V luôn đi học đúng giờ, ghi chép bài đầy đủ, thực hiện tốt công việc mà giáo viên giao phó. Trong trường hợp này, bạn V đã thực hiện tốt pháp luật ở hình thức nào?

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 best summarises paragraph 3?

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. Nonetheless, the fusion of cultures has made the world a more dynamic and open place, where people can celebrate both their unique heritage and the beauty of diversity.

b. Thanks to advancements in technology and communication, people from different countries and backgrounds can now share ideas, traditions, and experiences more easily than ever before.

c. This cultural exchange has led to the blending of various elements such as food, fashion, music, and language, creating a rich, diverse global society.

d. In today’s interconnected world, global culture has become an important aspect of modern life.

e. While this global culture encourages understanding and unity, it also presents challenges, such as the loss of local traditions and the risk of cultural homogenization.

Mark the letter A, B, C or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions: 

I thought I should not stay at home yesterday.

Read the following passage about How Failures Led to Breakthroughs 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.

Many important discoveries happened because of mistakes and unexpected accidents. Alexander Fleming found penicillin when he left his laboratory messy before going on holiday. After vacation, he saw mold growing on his experiment plate. Fleming noticed this mold killed bacteria around it very effectively. This fortunate accident later saved millions of lives around the world. Scientists call finding valuable things by chance "serendipity," which happens often in research.

The Post-it Note began as a mistake that seemed useless at first. In 1968, Spencer Silver tried making a strong glue for 3M company but created a weak one instead that didn't stick permanently. Nobody knew what to do with this disappointing result for several years. Then his colleague Arthur Fry realized this "failure" could make perfect bookmarks that wouldn't damage pages when removed. This weak adhesive eventually became one of the most popular office products worldwide, changing how people work.

In cooking, many favorite foods came from kitchen errors and quick substitutions. Ruth Wakefield invented chocolate chip cookies when she ran out of baker's chocolate and used broken pieces of semi-sweet chocolate instead. She thought they would melt completely in the dough, but they kept their shape during baking. Potato chips were created when chef George Crum made extremely thin potatoes to annoy a customer who repeatedly complained about thick fries. Surprisingly, the customer loved them and ordered more!

These fascinating stories teach us that mistakes can lead to new opportunities and unexpected innovations. Thomas Edison said about his many failed light bulb attempts, "I haven't failed. I've just found 10,000 ways that don't work." This positive attitude shows we should see errors as valuable learning chances. Smart people don't fear making mistakes in their work; they fear missing opportunities to learn from them and discover something amazing.

The word “permanently” in paragraph 2 could be best replaced by _________.

Để tạo một tin trên mạng xã hội facebook, sau khi đã nháy chuột vào biểu tượng Menu , trong mục Tạo, chọn gì?

Những hành vi vi phạm quyền và nghĩa vụ công dân về bảo vệ Tổ quốc gây nên nhiều hậu quả tiêu cực, ngoại trừ:

Kiểu dữ liệu nào sau đây không được đề cập trong chương trình tin học phổ thông?