Điều kiện nào sau đây không phải là điều kiện chuẩn?

Một loại nguyên tử hydrogen có cấu tạo đơn giản nhất, chỉ tạo nên từ 1 electron và 1 proton. Những phát biểu nào sau đây là đúng khi nói về nguyên tử hydrogen?

I will contact you as soon as I __________ the information.

Choose A, B, C or D that has the CLOSEST meaning to the underlined word/phrase in each question.

It is important for all of us to focus on bettering our environment to ensure a sustainable future.

Ý nào đúng: Nội thương phát triển có vai trò thúc đẩy sự phân công lao động theo vùng, nguyên nhân vì?

Khẳng định nào sau đây đúng?

Mark the letter A, B, C or D on your answer sheet to indicate the most suitable response to complete each of the following exchanges.

Peter: "Hi, David, do you think it's possible for you to have a talk sometime today?"

David: “ _______”

Hệ thống nào sau đây có thời gian sinh trưởng ngắn như dâu tây?

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. Urbanisation is a process that cannot be stopped, and the best way to minimise the problems caused by it is to plan for the growth and all the resources needed, and make sure the infrastructure can support the increasing population.

b. Big cities attract a lot of people as they usually offer more employment opportunities as well as a better life.

c. Urbanisation occurs in many parts of the world, both in developed and developing nations.

d. However, when too many people move to a big city, without good planning and investment, its infrastructure can become ineffective.

e. It refers to the process in which urban areas grow as people leave the countryside or more factories and towns are built in rural areas.

Cho bảng tín hiệu của các nhóm chức trong hợp chất hữu cơ như sau:

Người ta xác định công thức phân tử của hợp chất hữu cơ X này thông qua các bước sau:

- Thu thập kết quả phổ IR của hợp chất X:

- Thu thập kết quả của phép đo khối lượng của hợp chất X thông qua kết quả phép đo phổ khối lượng (MS):

Đốt chất hợp chất hữu cơ X thấy thành phần phần trăm các nguyên tố về khối lượng: \(\% \mathrm{mC}=40 \%\); \(\% \mathrm{mH}=6,67 \%\), còn lại là của nguyên tố oxygen.

Nhận định nào dưới đây về hợp chất hữu cơ X là sai?

Mặt cắt là gì?

Cho hai tập hợp $A = ( m - 1;5 )$; $B = ( 3; +\infty)$, $m \in \mathbb{R}$. Giá trị $m$ để $A \backslash B = \varnothing$ là

Với số nguyên dương \(n\(, gọi \(a_{3 n-3}\) là hệ số của \(x^{3 n-3}\) trong khai triển thành đa thức của \(\left(x^{2}+1\right)^{n}(x+2)^{n}\). Tìm \(n\) để \(a_{3 n-3}=26 n\).

Một người vào cửa hàng ăn, người đó chọn thực đơn gồm 1 món ăn trong 5 món, 1 loại quả tráng miệng trong 5 loại quả tráng miệng và 1 nước uống trong 3 loại nước uống. Có bao nhiêu cách chọn thực đơn.

Mạng Internet phát triển đầu tiên ở quốc gia nào?

Read the following passage about Key to Addressing Poverty, Gender Disparities, and Environmental Challenges 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.

Social issues are problems that affect a large number of people in society, often creating inequality and hardship. One of the most significant social issues today is poverty. (18)_________, such as food, shelter, and education. In many parts of the world, (19)_________, with families trapped in a cycle of deprivation. While poverty is a complex issue, it is often connected to factors like unemployment and lack of access to education. These factors make it hard for individuals to escape the cycle and improve their lives. To address poverty, governments and organizations must create sustainable policies that focus on education, healthcare, and employment opportunities.

Another pressing issue is gender inequality. In many countries, women still face discrimination in areas like employment and education, limiting their opportunities for personal and economic growth. Even in developed nations, women earn less than men for doing the same work. (20)_________, as people demand equal rights and opportunities for all genders. Moreover, gender inequality can also affect women's health and safety, (21)_________.

Finally, environmental degradation, like pollution and climate change, is a growing global concern. Environmental damage, (22)_________, especially in poorer regions, often affects them the most. The increasing frequency of natural disasters, caused by climate change, is also putting immense pressure on vulnerable populations. Tackling these issues requires a collective effort from both individuals and governments. Only through cooperation and sustainable practices can we hope to create a more equitable and livable world for future generations.

Thuốc sử dụng để trị bệnh lở mồm, long móng là:

Một máy kích thích tim được sạc đầy chứa 1,20 kJ năng lượng trong tụ điện của máy. Biết điện dung của tụ điện là 1,10.10⁻⁴(F). Khi máy phóng điện qua một bệnh nhân, năng lượng điện 6.10²J được truyền đi trong 2,5ms.Tính công suất trung bình được cung cấp cho bệnh nhân.

1. Do you find yourself yawning all day at school? You probably need more sleep. However, it is not just how much sleep you get that is important. What you do before bedtime also has a huge effect on how you feel the next day. If you spend time chatting to someone on social media, or reading a book on your e- reader, you are not alone.

2. All devices' screens give out a large amount of blue light, which affects the body's production of the sleep hormone, melatonin, which can change your sleep patterns. So it is not just getting to sleep that becomes hard, but the quality of your sleep also suffers. The result is that you can wake up several times during the night, and have difficulty getting up in the morning.

3. Sleep is food for the brain, so not sleeping well can be a severe problem for anyone, especially for teenagers, because their brains are still developing. When you do not sleep well, it can be difficult to concentrate at school, which makes it harder to learn and get good grades. It can also affect your mood, making you feel sad or anxious.   

4. So, it is clear you should not use your phone before you go to sleep. Why not leave it in another room? Nothing on social media is so important that it cannot wait a few hours! You should rediscover paper books and enjoy feeling tired and sleepy before bedtime rather than wondering why your best friend has not liked your photo! How will you wake up? You do not have to use the alarm on your phone. Go and buy yourself an old-fashioned alarm clock! The negative effects that screen time is having on sleep have been in the news a lot recently, so manufacturers of smartphones and tablets have added a feature to the mobile devices that can help reduce these. Most new phones have a night-time setting that changes the colour of the screen so that it gives out less blue light. If you really cannot avoid going onto social media at bedtime, think about turning on this setting on your phone.

Which of the following is probably the author’s advice for a better bedtime?

Họ tất cả các nguyên hàm của hàm số $f\left(x\right)=\frac{2x+3}{x+1}$ trên khoảng $\left(-1;+\infty \right)$ là?