Người Ai Cập cổ đại tính được số pi (π) bằng bao nhiêu?

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 from 31 to 40.

Who are you?

On 6 June 2011, the media reported the kidnapping of a female Syrian-American blogger called Amina Arraf. Regarded as a daring political rebel, the 35-year-old had gained popularity for her blogs protesting the lack of freedom in Syria. Yet, only two days later, it was discovered that Amina had never existed. She was a fictional character created by Tom MacMaster, a forty-year-old American PhD student at the University of Edinburgh.

MacMaster's invention is an example of sock puppetry: the use of false identities to deceive others. (I). The false identity is known as a sock puppet, and its creator, a puppet master. (II). MacMaster created Amina to express his views on Middle Eastern affairs without offending other Americans. (III). Writing as Amina gave him the authority to say what he wanted. (IV).  

At the turn of the millennium, Debbie Swenson created Kaycee Nicole, a fictional teenage girl suffering from terminal cancer. Her blog, Living Colours, described Kaycee’s struggle, attracting millions of readers. When Kaycee 'died' on 14 May 2001, her fans were devastated. Their distress turned to anger when they discovered that Kaycee was not real. Swenson had developed the character to gain attention and sympathy.

While Amina and Kaycee were used to meet their creators' needs, other identities have been invented for profit. American gun advocate John Lott made up a fake student, Mary Rosh, to defend his writing online and give him positive reviews. Mystery writer RJ Ellory fabricated a team of sock puppets to praise his own books and tear into those of his rivals. British historian Orlando Figes lost credibility when he had to publicly apologise for doing the same.

Yet none of these stories compare to large-scale sock puppetry today. The New York City Police Department has false identities on social media to catch criminals. The US military is believed to use sock puppets to track potential terrorists. It is clear that the internet is a minefield today and we all have to step very carefully in order not to get hurt.

Which of the following best summarizes the main point of the passage?

Liên kết hoá học nào giữa các nhóm (-R) của amino acid là mạnh nhất?

Ở thực vật, nguyên tố dinh dưỡng khoáng thiết yếu nào là nguyên tố vi lượng?

Đặc điểm của Thị quốc ở Địa Trung Hải là gì?

               “Máy bay qua biên giới

               Ghé tạm xuống Nam Ninh

               “Cách mạng văn hoá” mới

               Nhí nhố hồng vệ binh.

               Ảnh to và ảnh nhỏ

               Nghìn triệu còn một Ông

               Mấy chú giơ sách đỏ

               Muôn năm Mao Trạch Đông!

               Bữa cơm trưa Vũ Hán

               Vô chủ, chuyện cùng ai?

               Đất này đâu hết bạn

               Xin hẹn một ngày mai…”

(Tố Hữu, Qua biên giới)

Nội dung đoạn thơ trên nói về điều gì?

Cho hàm số y = f(x) có đồ thị như hình vẽ:

Khẳng định nào sau đây là đúng?

Read the following passage about Life in The Future 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.

In the near future, technology is expected to bring about significant changes to how we lead our lives. One of the most notable shifts will be the way we keep up with the rapid pace of technological advancements. With smart homes and autonomous vehicles, our daily routines will increasingly depend on sophisticated systems designed to make our lives easier. For example, smart assistants will look out for our needs, such as ordering groceries, adjusting room temperatures, or even scheduling doctor’s appointments.

Another major development will be in communication. Today, we already use video calls to stay in touch with friends and family across the globe, but the future promises even more immersive experiences. Virtual reality could allow us to hang out with people in virtual spaces, regardless of where they physically are. As a result, geographical barriers will become less relevant, creating a more connected and global society.

Healthcare is also likely to transform. Advances in artificial intelligence will enable doctors to look after patients more efficiently, diagnosing diseases earlier and prescribing personalized treatments. These changes may extend our lifespan and improve our quality of life. Additionally, breakthroughs in renewable energy will play a key role in sustaining our future. With green energy sources, such as solar and wind power, we can cut down on harmful emissions and move toward a more sustainable planet.

While these advancements sound exciting, they also bring challenges. As technology becomes more integrated into our lives, we must be careful to ensure privacy and security. We need to watch out for potential risks, like data breaches and the misuse of personal information. With thoughtful planning, however, the future holds great promise for improving the way we live, work, and interact with the world.

In which paragraph does the passage discuss the role of smart assistants in daily life?

Read the following passage about the A Vision of a Harmonious Multicultural Society 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.

By 2050, our world will have undergone remarkable transformations in how different cultures coexist. The walls that once divided nations are vanishing into thin air as global citizens embrace diversity like never before. Technology will serve as the great equalizer, with translation devices making language barriers a thing of the past. In urban centers worldwide, neighborhoods will showcase architectural influences from multiple cultures, creating spaces where everyone feels at home regardless of their background. Public spaces will feature gardens with plants from different continents, symbolic of how various cultures can thrive together in one environment.

[I] Education systems will prioritize cultural literacy alongside traditional subjects. [II] Schools will teach world history from multiple perspectives rather than through a single cultural lens. [III] Students will routinely participate in virtual exchange programs, allowing them to form friendships with peers around the world without leaving their classrooms. [IV] Government policies will recognize that a harmonious multicultural society requires institutional support, with resources allocated to community centers where cultural exchange happens organically through shared meals, festivals, and collaborative art projects.

Economic systems will evolve to value diverse approaches to business and innovation. Companies will actively seek employees from varied backgrounds, recognizing that diverse teams create more innovative solutions. Traditional knowledge from indigenous communities will be respected and incorporated into sustainable development practices. The entertainment industry will produce content that authentically represents multiple cultures, moving beyond stereotypes to show the complexity within each tradition. Digital platforms will help preserve endangered languages and cultural practices through accessible archives and learning tools.

The greatest achievement of this harmonious world will be a new understanding of human identity. People will identify with multiple cultural traditions simultaneously without feeling conflicted about their loyalties. Holidays from various traditions will be celebrated collectively, creating new hybrid celebrations that honor multiple heritages. The concept of "us versus them" will gradually fade as people recognize shared values across different traditions. While challenges will remain, the dominant attitude will be one of curiosity rather than fear when encountering differences.

The phrase “vanishing into thin air” in paragraph 1 could be best replaced by _________.

Trong mặt phẳng toạ độ \(Oxy\), cho hai điểm \(A(5;4),B( - 1;0)\). Đường trung trực của đoạn thẳng \(AB\) có phương trình là?

Hạt nhân nguyên tử Lithium (Li) có 3 proton. Số hiệu nguyên tử của Li là

Một vật rơi tự do, trong 4 s cuối cùng rơi được 320 m. Tính thời gian rơi của vật. Lấy \[g = 10m/{s^2}\]

GTNN của \(F(x;y) = 3x + 4y\), với ĐK: \(\left\{ \begin{array}{*{35}{l}} x\ge 0 \\ 0\le y\le 5 \\ x+y-2\ge 0 \\ 3x-y\le 6 \\ \end{array}\text{ } \right.\)

Mọi vật thể đều được tạo nên từ các nguyên tử. Trong đa số các nguyên tử, hạt nhân chứa các loại hạt nào?

Phát biểu nào sau đây không đúng với các nước phát triển?

Luật An ninh mạng được Quốc hội nước Cộng hòa xã hội chủ nghĩa Việt Nam thông qua vào thời gian nào?

Theo quy định pháp luật, công dân có thể thực hiện quyền tố cáo trong tình huống nào sau đây?

Nhật Hoàng tuyên bố đầu hàng đồng minh vào ngày tháng năm nào?

Tổng số các hạt proton, neutron và electron trong nguyên tử của một nguyên tố là 40. Biết số hạt nơtron lớn hơn số hạt proton là 1. Cho biết nguyên tố trên thuộc loại nguyên tố nào?