Nếu lấy tuỷ làm tâm, sự phân bố của mạch rây và gỗ trong sinh trưởng sơ cấp như thế nào?

Giáo dục thi cử của nước ta ở các thế kỉ XVI đến XVIII có điểm hạn chế gì?

Con ngựa kéo xe chuyển động đều với vận tốc 9 km/h. Lực kéo là 300 N. Công suất của ngựa là

Thành phần nào sau đây không thuộc sơ đồ khối hệ thống nhiên liệu dùng bộ chế hòa khí ở động cơ xăng?

Testosterone được sinh sản ra ở đâu?

Read the following passage about human life expectancy 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. 

How long will a baby born today live? 100 years? 120 years? Scientists are studying genes that could mean long life for us all.

There are already many, many people who have passed the landmark age of 100. In fact, there are now so many healthy, elderly people that there’s a name for them: the wellderly. These are people over the age of eighty who have no major illnesses, such as high blood pressure, heart disease or diabetes.

There are many scientific studies of communities where healthy old age is typical. These include places like Calabria in southern Italy and the island of Okinawa in Japan. In Calabria, the small village of Molochio has about 2,000 inhabitants. And of these, there are at least eight people over a hundred years old. When researchers ask people like this the secret of their long life, the answer is almost always about food and is almost always the same: ‘I eat a lot of fruit and vegetables.’ ‘I eat a little bit of everything.’ ‘I neither smoke nor drink.’

In the past, scientists looked at things such as diet and lifestyle for an explanation of long life, but these days they are also looking at genetics. Researcher Eric Topol says that there must be genes that explain why people are protected from the effects of aging process. The new research into long life did scrutinize groups of people who have a genetic connection. One interesting group lives in Ecuador. In one area of the country there are a number of people with the same genetic condition. It’s called Laron syndrome. These people don’t grow very tall – just over one metre. But Laron syndrome also give them protection against cancer and diabetes. As a result, they live longer than other people in their families. Meanwhile, on the Hawaiian island of Oahu, there’s another group of long-lived men, Japanese-Americans. They have a similar gene to the Laron syndrome group.

Back in Calabria, researchers constructed the family trees of the 100-year-old people. They looked at family information from the 19th century to today. It is concluded that there are genetic factors that give health benefits to the men. This is a surprising result because generally in Europe, women live longer than men. So what really makes people live longer? It seems likely that it is an interaction of genes, the environment and probably a third factor – luck.

The word “they” in paragraph 4 refers to_______.

Khi cung bằng cầu sẽ dẫn đến tình trạng nào sau đây?

Chọn ý đúng: Tiêu chí thứ tư trong đánh giá công nghệ là gì?

Phương pháp thu thập dữ liệu là:

Cho hai tập hợp $A=\left[ -2;2 \right]$ và $B=\left(-1;3 \right)$. Tập hợp $A\cap B$ là

Xã hội cổ đại Hi Lạp và Rô-ma có hai giai cấp cơ bản nào?

Hệ nhị phân là nền tảng của tất cả các công nghệ số, bao gồm máy tính và các thiết bị điện tử. Hệ nhị phân cho phép biểu diễn các số và dữ liệu dưới dạng nhị phân. Nó đóng vai trò quan trọng trong việc lưu trữ, xử lý và truyền tải thông tin trong các hệ thống điện tử hiện đại.

Dưới đây là một số nhận xét về thông tin trên:

Which of the following best restates each of the given sentences?

Scientists have not produced a miraculous drug which can cure SIDA.

Read the following passage about the The Importance of Social Media in Modern 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.

In the 21st century, social media has become a crucial element of everyday life[I]. Platforms such as Facebook, Twitter, Instagram, and TikTok link individuals around the world, [IV]. Although some may critique social media for promoting negativity, it is important to acknowledge its numerous positive effects on society[III]. This essay will delve into the importance of social media, its influence on shaping public perception, and the challenges it poses.[II]

One of the primary benefits of social media is its ability to foster communication and connection. People can maintain relationships with friends and family, regardless of geographical barriers. This aspect is particularly vital for those who live far away from loved ones. For example, a student studying abroad can easily share their experiences with family through posts, photos, and video calls. Furthermore, social media enables individuals to connect with like-minded people and build communities around shared interests or causes. Activist groups, for instance, often use social media platforms to rally support for important issues, raising awareness and mobilizing action more efficiently than traditional methods.

Moreover, social media serves as a powerful tool for information dissemination. News spreads rapidly through these platforms, allowing individuals to stay informed about current events. During emergencies, such as natural disasters, social media can provide crucial information in real time, helping people stay safe and informed. However, this rapid dissemination of information also raises concerns about the accuracy and reliability of the content being shared. Misinformation can spread just as quickly as legitimate news, leading to confusion and mistrust.

Despite the challenges posed by misinformation, social media plays a significant role in shaping public opinion. People often turn to these platforms to voice their opinions and engage in discussions on various topics. For instance, political debates and social movements frequently gain traction through social media, allowing individuals to express their views and influence others. This democratization of discourse can empower marginalized voices and facilitate social change. However, it is crucial to approach online discussions critically, as echo chambers can form, reinforcing existing beliefs rather than encouraging open dialogue.

In conclusion, while social media presents challenges such as misinformation and polarized discussions, its positive contributions to communication, information dissemination, and social activism cannot be overlooked. As society continues to evolve, it is essential to harness the potential of social media while being mindful of its pitfalls. By promoting responsible use and critical thinking, we can maximize the benefits of social media and foster a more connected and informed society.

The word “democratization” in paragraph 4 is OPPOSITE in meaning to_______.

Loại li hợp nào được sử dụng phổ biến trên ô tô?

Vai trò của Đảng Cộng sản Việt Nam đối với hệ thống chính trị là gì?

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 Nhung,

a. I hope this email finds you well. I’m writing to let you know that I’ll be arriving in Hanoi next Monday and wanted to ask if you’ll be at home then. 

b. Would it be possible for you to meet me at the airport?

c. Please let me know once you’ve received this email. I’m looking forward to hearing from you soon!

d. By the way, I was wondering if you could recommend some historical sites in northern Vietnam. 

e. I am also planning to visit a few places there to gather materials for my Cultural Studies presentation.

Best regards,

Anna

If energy _______ inexpensive and unlimited, many things in the world would be different.