Hợp chất X có công thức cấu tạo là \(CH_3COOC_2H_5\). Tên gọi của chất X là gì?

Lãnh thổ Nhật Bản trải ra theo một vòng cung dài khoảng bao nhiêu km?

Vectơ nào dưới đây là một vectơ chỉ phương của đường thẳng song song với trục Ox?

I haven’t seen Peter for a long time. I will _________ him this weekend.

Nội dung nào sau đây không phản ánh đúng cuộc đấu tranh bảo vệ, thực thi chủ quyền, các lợi ích hợp pháp của Nhà nước Cộng hòa xã hội chủ nghĩa Việt Nam ở Biển Đông?

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.

Dear Lily,

a. I also read that you’ve been getting into photography. That’s fantastic! Have you thought about joining a local photography club? I bet it would be a great way to meet other enthusiasts and improve your skills.

b. I hope this letter finds you well! I’ve been thinking about our last conversation about trying new hobbies, and I wanted to share some exciting things I’ve discovered.

c. Recently, I started taking a pottery class, and it has been such a rewarding experience! It’s so satisfying to create something with my hands. 

d. By the way, I’m planning to attend a craft fair next month. Maybe we could go together. It would be fun to explore and see what others are creating.

e. Let me know what you think! I can’t wait to hear about your photography adventures.

Take care and talk soon!

Đứng đầu Nhà nước và thay mặt nước Cộng hoà xã hội chủ nghĩa Việt Nam về đối nội và đối ngoại là ai?

Để khắc phục tình trạng lạm phát do lượng tiền mặt trong lưu thông đã vượt quá mức cần thiết, nhà nước cần làm gì?

Chuyển số 234₁₀ sang số nhị phân, số lượng bit 1 là

Ngâm củ nghệ với ethanol nóng, sau đó lọc bỏ phần bã, lấy dung dịch đem cô để làm bay hơi bớt dung môi. Phần dung dịch còn lại sau khi cô được làm lạnh, để yên một thời gian rồi lọc lấy kết tủa curcumin màu vàng. Từ mô tả ở trên, hãy cho biết, người ta đã sử dụng các kĩ thuật tinh chế nào để lấy được curcumin từ củ nghệ.

Mark the letter A, B, C, or D to indicate the sentence that best combines each pair of sentences given

Security refers to physical and psychological safety. Families can provide security.

Quyết định nào của hội nghị ban chấp hành Trung ương Đảng cộng sản Đông Dương lần thứ 8 (5 - 1941) được coi là một điển hình sáng tạo trong việc vận dụng chủ nghĩa Mác - Lênin về khởi nghĩa vũ trang vào Việt Nam? 

Hoạt động nào sau đây KHÔNG là biểu hiện của hệ thống IoT?

Chúng ta cần làm gì để tự bảo vệ bản thân khi sử dụng mạng xã hội?

Read the following passage about urbanisation and mark the letter A, B, C, or D on your answer sheet to indicate the best answer to each of the following questions.

URBANISATION: A GROWING PHENOMENON

     Urbanisation is the process through which cities grow, and higher populations begin to inhabit urban areas. This phenomenon has accelerated significantly over the past few decades due to various factors. One of the primary drivers is the search for better employment opportunities. In rural areas, job prospects are often limited to agriculture and small-scale industries, which might not provide sufficient income. Consequently, people migrate to cities seeking better livelihoods and living standards.

     Additionally, urban areas offer more advanced educational facilities and healthcare services compared to rural regions. Many families move to cities to provide their children with higher-quality education and greater future opportunities. Access to hospitals and specialized medical services also attracts people to urban centers, especially in countries where rural healthcare is underdeveloped.

     However, rapid urbanisation brings about several challenges. Overcrowding in cities can lead to inadequate housing, strained infrastructure, and increased pollution. The expansion of urban areas often results in the loss of green spaces and agricultural land, impacting food production and the environment. Governments and city planners must address these issues to ensure sustainable urban growth.

     Despite these challenges, urbanisation has several positive aspects. Cities are often cultural melting pots, where diverse groups of people interact, leading to vibrant communities and innovation. The concentration of resources and talents in urban areas can drive economic growth and technological advancements.

The word advanced in paragraph 2 could be best replaced by ____.

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.

Heirloom Moments™: Family Traditions Reimagined for the Quantum Age

The revolutionary technology transforms how families (1)_________ across generations. Our (2)_________ creates unforgettable experiences for everyone.

Families (3)_________ our service report stronger connections with distant relatives. We send photos (4)_________ grandparents through our secure platform.

When it comes to preserving memories, Heirloom Moments™ (5)_________ the cake! We encourage you to start your family's digital legacy today.

Visit our website or call us today (6)_________ more about how Heirloom Moments™ can help your family stay connected across time and space!

Read the following passage about home schooling in the UK 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.

Full-time education in the UK is compulsory from the age of five to sixteen, but this doesn’t have to be in a school. Around 50,000 children are educated at home. This is called ‘homeschooling’.

 Parents take their children out of school for different reasons, like illness and the need for special care, or because the distance to the nearest school may be too far. Some children are simply unhappy at school. Whatever the reason, they’re allowed to study at home, although inspectors regularly check how they are getting on.

 Hayley and Jenny haven’t been to school for two years but they haven’t neglected their studies. Their mother worked out strict timetables for them, with hourly lessons for each day. She’s responsible for teaching them Maths, English, History and French. Their father teaches them Science and Geography. They study all the other school subjects online. ‘We have lessons with Dad in the evenings and at weekends,’ explains Hayley.

 The family’s home is in a remote part of Wales. ‘The girls were fine at school but they spent so much time getting to school, they were too tired to learn, says their mother, Julia”. ‘We had a family conference and in the end we decided to try homeschooling. So far, it’s been a big success, but the girls know that if they want to go back to school at any time, we’ll let them. We follow the normal school program of lessons, and they will take all the normal school exams.’

 There are disadvantages too, of course. ‘Social isolation is something I worry about,’ says Julia. They both seem happy and well-adjusted, but they haven’t really got friends who live locally. But in the summer holidays they go away on trips to summer camps, where they have no trouble mixing with people and making friends.’

The word “worked out” in paragraph 3 is OPPOSITE in meaning to ______.

Phương án nào dưới đây thuộc thị trường các loại hàng hoá và dịch vụ?

Nguyên nhân chủ yếu gây ô nhiễm nguồn nước ngọt hiện nay là

Read the following passage about the Second Acts That Inspire 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.

Life often presents us with unexpected challenges that force us back to the drawing board. Whether due to personal setbacks, career changes, or unforeseen circumstances, the courage to begin again can lead to remarkable transformations. Many inspiring individuals have shown that it's never too late to reinvent oneself and pursue new dreams. Throughout history, countless people have overcome seemingly impossible situations through sheer determination.

[I] Take J.K. Rowling, for instance. Before becoming a literary sensation, she was a struggling single mother living on welfare. [II] Her determination eventually paid off when her books became a global phenomenon, proving that setbacks can become stepping stones to success. [III] This remarkable turnaround demonstrates how resilience and unwavering belief in oneself can overcome seemingly insurmountable obstacles. Despite facing depression and financial hardship, she never gave up on her dreams. [IV]

Colonel Harland Sanders' story is another testament to the power of starting anew. At the age of 65, when most people contemplate retirement, he found himself struggling financially after his restaurant failed. Instead of giving up, he traveled across America, sleeping in his car while pitching his chicken recipe to restaurant owners. His recipe for success wasn't just about the perfect blend of herbs and spices; it was about persistence and determination. After facing over 1,000 rejections, he finally established Kentucky Fried Chicken, which grew into a global empire. His unwavering spirit and dedication inspired generations of entrepreneurs worldwide.

These inspiring stories remind us that failure is not final, but rather a chance to redirect our path. Every setback carries the seed of an equal or greater opportunity, and sometimes the end of one chapter is simply the beginning of a better one. The key lies in having the courage to take that first step, even when the future seems uncertain. As these remarkable individuals have shown, it's never too late to rewrite your story and create a powerful second act. Their journeys teach us that persistence and courage ultimately lead to success.

The word “he” in paragraph 3 refers to _________.

Tam giác ABC có $BC=1, AC=3$, $\hat{C}={60}^0$. Độ dài cạnh AB là