Sống chung thành từng bầy để bảo vệ nhau và cùng nhau tìm kiếm thức ăn trong rừng. Đó là đặc điểm của:

Nguyên nhân khiến số người mắc và tử vong vì ung thư ở Việt Nam tăng nhanh là gì?

I.  Ô nhiễm môi trường sống làm phát sinh nhiều tác nhân đột biến.

II. Thói quen ăn uống không khoa học

III. Thói quen sinh hoạt không lành mạnh

IV. Sự chênh lệch tỉ lệ giới tính

Trong phòng giáo viên, giờ ra chơi có bốn cô giáo: An, Bình, Giang và Nhàn ngồi nói chuyện với nhau quanh 1 chiếc bàn hình tròn. Cô mặc áo dài xanh (không phải là cô An và cô Bình) thì ngồi giữa cô mặc áo dài tím và cô Nhàn. Cô mặc áo dài trắng thì ngồi giữa cô mặc áo dài hồng và cô Bình. Vậy cô An mặc áo màu gì?

Đồng bộ công nghệ trong sản xuất nông nghiệp giúp:

Ngôn ngữ nào sau đây không phải ngôn ngữ bậc cao?

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.

Who is TRUE about the wellderly?

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.

Charles said. “I saw Jack at a party a few months ago and he seemed fine. ”

Hình ảnh trung tâm trong bài thơ số 2 của Chiyo là gì?

Sentence combination: They did not have access to education. It restricted their ability to reach their career targets.

Tính giá trị \(M=A_{n-15}^{2}+3 A_{n-14}^{3}\), biết rằng \(C_{n}^{4}=20 C_{n}^{2}\) (với \(n\) là số nguyên dương, \(A_{n}^{k}\) là số chỉnh hợp chập \(k\) của \(n\) phần tử và \(C_{n}^{k}\) là số tổ hợp chập \(k\) của \(n\) phần tử).

Số vị trí biểu diễn các nghiệm của phương trình \(\text{sin}\left( 2x+\frac{\pi }{3} \right)=\frac{1}{2}\) trên đường tròn lượng giác là

Sau khi thoát khỏi giới động vật, Người tối cổ phải sống thành từng bầy, vì một trong những lí do nào sau đây?

Hiệu suất của một máy tăng lên khi

Số đường thẳng đi qua điểm $A\left(0;3\right)$ và tiếp xúc với đồ thị hàm số $y=x^4-2x^2+3$ là?

Trong các câu dưới đây, câu nào là mệnh đề toán học?

Chọn ý đúng: Quy trình sản xuất phân bón vi sinh cố định đạm có bước nào?

Cho ba số thực dương a, b, c khác 1. Đồ thị các hàm số \(y = {\log _a}x,y = {\log _b}x,y = {\log _c}x\) thể hiện ở hình vẽ:

Khẳng định nào dưới đây là đúng?

Khi ném một vật theo phương ngang (bỏ qua sức cản của không khí), thời gian chuyển động của vật phụ thuộc vào

Choose the best answer to fill in the blank (15)

Read the passage and mark the letter A, B, C or D to answer the following questions.
Volunteering offers many of the same social benefits, with the added bonus of helping others and developing useful skills to put on your CV. Plus, students are in a unique position to help, suggests Tom Fox. "They can take their enthusiasm and excitement for opportunities and share their passions, subject knowledge and experience with people." The idea of giving up time for nothing might seem impractical at first, especially once the pressures of study and coursework or exams begin to mount up. However, Michelle Wright, CEO of charity support organization Cause4, suggests seeing volunteering as a two-way street. "I think it is fine for undergraduates to approach volunteering as a symbiotic relationship where doing good is just one part of the motivation for reaching personal and professional goals."
Katerina Rudiger, head of skills and policy campaigns at the Chartered Institute of Personnel and Development (CIPD), says: "Volunteering can be a valuable way of gaining that experience, as well as building confidence, broadening your horizons, becoming a better team player and developing those all- important 'employability skills' such as communication and decision making." Amanda Haig, graduate HR manager, agrees that volunteering can help your employment prospects. "Volunteering can demonstrate positive personality traits and skill sets, such as proactivity, and teamwork," she says.
A positive side-effect of volunteering is improving your time at university by getting involved in the local community. Leaving the student bubble can make your time as an undergraduate much more varied. At Bath Spa University, more than 1,000 students volunteered over the past year, doing everything from working on local environmental projects to helping in schools or assisting the elderly. ”Quite often there can be a divide between students and permanent residents," says students' union president Amy Dawson, "but if students invest a little time now, they will be giving something back to the local community and will reap the benefits in the future."
“You might also find that volunteering helps your studies if you choose the right program. At Lancaster, volunteering is linked into academic modules in some cases", explains Fox. "This has multiple wins. Students get to apply their learning in the classroom and share their interests with children in local schools or community organizations, while schools gain skilled students with a passion for a subject that enthuses their pupils."

What does the word “side-effect” mean?