Chọn ý đúng: Sản phẩm của ngành giao thông vận tải chính là gì ?

Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions.

Objects can look a hundred times larger __________ this microscope.

Dựa vào thông tin dưới đây để trả lời các câu từ 15-17

“Bài học của thời kì Chiến tranh lạnh đã chứng tỏ phương thức quan hệ quốc tế lấy đổi đầu chính trị - quân sự là chủ yếu không còn phù hợp, phải chịu nhiều tổn thất hoặc thất bại như hai nước Xô – Mỹ và một bị thương, một bị mất. Trong khi đó, phương thức lấy hợp tác và cạnh tranh về kinh tế – chính trị là chính lại thu được nhiều tiến bộ, kết quả như các nước Đức, Nhật và NICs. Sự hưng thịnh hay suy vong của một quốc gia quyết định bởi sức mạnh tổng hợp của quốc gia đó, mà chủ yếu là thực lực kinh tế và khoa học – kĩ thuật”

(Vũ Dương Ninh (Chủ biên), Một số chuyên đề lịch sử thế giới, NXB Đại học Quốc gia Hà Nội. Hà Nội. 2001, tr.401)

Từ phương thức quan hệ quốc tế của các cường quốc trong thời kì Chiến tranh lạnh, bài học kinh nghiệm nào rút ra cho quá trình xây dựng và phát triển đất nước trong thời kì mới ở Việt Nam?

Đâu là ý đúng: Nguyên tắc thứ hai khi bón phân hóa học là gì?

Cách giải thích quá trình tạo lập thế giới của tác giả dân gian có đặc điểm gì?

Cho cấp số cộng \(\left( {{u}_{n}} \right)\), biết \({{u}_{1}}=2\), công sai \(d=-1\), tổng \(10\) số hạng đầu tiên của cấp số cộng trên bằng

Read the following passage about education in Nepal 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.

An education pioneer born into rural poverty in Nepal has opened 30 schools in a bid to boost prospects for his country's children.

The World Bank ranks Nepal as the globe's 31st poorest country, with almost 10 million people living on daily incomes between £1.48 and £2.50. Many rural villages remain unreached by government schooling and adult literacy stood at just 60 per cent in 2011.

Surya Karki and his charity United World Schools Nepal (UWS) are tackling high illiteracy and poverty rates by funding and improving education.

The first school opened in 2015 – since then 92 per cent of children have completed primary education, which finishes at age eight, and continued into secondary education with UWS schools. In comparison to 39 per cent of students continuing education who attended government schools.

Mr Karki was born into poverty in rural Nepal. Speaking to the Telegraph he said: “School is the only solution to the poverty cycle that we live in. I was raised by a single mother in a male-dominated society.

“The school that I went to was approximately two hours walk away. My house was on top of a hill and my mother had to drag me across rivers. We used to walk 10 miles a day. The schooling was really bad.”

Of the students who would go to school, he said: “They would end up in the same place, as cheap migrant workers in Qatar, Saudi, or Dubai. There was no value in education – no success stories.”

[A] Karki’s mother was a firm believer in education, and at age eight Karki secured a scholarship to study in the capital, Kathmandu. [B] From there he won scholarships and completed Masters degrees in China and the United States. [C] Karki said. “Inequalities in a country can only be decreased if there is access to knowledge.” [D]

The devastating earthquake in 2015 damaged 9,300 schools, displacing hundreds of thousands of families and pushing 700,000 people into poverty. As of January 2018, only 2,891 schools had been rebuilt. Karki said: “We came at a crucial time, where we could redo or undo what had been done badly. Education was really bad in terms of infrastructure, quality of teachers, training. It was an opportunity for us to really make things better.”

UWS Nepal has so far built 30 schools and has seven more in construction. The schools run between 10 am and 3:30 pm, and have an 86 per cent average attendance rate, which Karki says is almost double the attendance rates for government schools in the vicinity. Sexual health classes are taught to the children in the later years.

Which of the following expresses the essential information in the underlined sentence in paragraph 8?

Cho các chuyển động sau:

(1) Một chiếc xe máy chạy trên đường.

(2) Một quả bóng rơi từ do từ độ cao h so với mặt đất.

(3) Một máy phát điện hoạt động khi quay trục.

(4) Hoạt động của tấm pin mặt trời.

(5) Quạt máy chạy khi cắm điện.

(6) Động cơ tàu thủy hoạt động khi đẩy cánh quạt.

(7) Chuyển động của tấm ván trượt xuống dốc.

Có bao nhiêu chuyển động có sự chuyển hóa từ cơ năng sang điện năng?

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. John: Absolutely! I’ve been looking forward to it for weeks. Have you started planning our route?

b. Alice: Great idea! I heard there are some beautiful trails. Do you have any specific spots in mind?

c. Alice: Hey John, are you excited about our road trip next month?

d. John: That sounds amazing! We should definitely stop for some hiking along the way.

e. Alice: Yes! I found some scenic roads that will take us through the mountains and by the lakes.

Nghiệm của phương trình \({{\sin }^{3}}x+3{{\cos }^{3}}x+\sin x=0\) là: 

Năm 2021, giá trị xuất khẩu của nước ta đạt 336,1 tỉ USD và giá trị nhập khẩu đạt 332,8 tỉ USD. Hãy cho biết tỉ trọng giá trị nhập khẩu của nước ta trong tổng trị giá xuất nhập khẩu là bao nhiêu phần trăm? (làm tròn kết quả đến một chữ số thập phân).

Read the passage below and choose A, B, C or D.

Millions of people are using cellphones today. In many places, it is actually considered unusual not to use one. In many countries, cellphones are very popular with young people. They find that the phones are more than a means of communication - having a mobile phone shows that they are cool and connected.

The explosion in mobile phone use around the world has made some health professionals worried. Some doctors are concerned that in the future many people may suffer health problems from the use of mobile phones. In England, there has been a serious debate about this issue. Mobile phone companies are worried about the negative publicity of such ideas. They say that there is no proof that mobile phones are bad for your health.

On the other hand, medical studies have shown changes in the brain cells of some people who use mobile phones. Signs of change in the tissues of the brain and head can be detected with modern scanning equipment. In one case, a traveling salesman had to retire at young age because of serious memory loss. He couldn't remember even simple tasks. He would often forget the name of his own son. This man used to talk on his mobile phone for about six hours a day, every day of his working week, for a couple of years. His family doctor blamed his mobile phone use, but his employer's doctor didn't agree.

What is it that makes mobile phones potentially harmful? The answer is radiation. High-tech machines can detect very small amounts of radiation from mobile phones. Mobile phone companies agree that there is some radiation, but they say the amount is too small to worry about.

As the discussion about their safety continues, it appears that it's best to use mobile phones less often. Use your regular phone if you want to talk for a long time. Use your mobile phone only when you really need it. Mobile phones can be very useful and convenient, especially in emergencies. In the future, mobile phones may have a warning label that says they are bad for your health. So for now, it's wise not to use your mobile phone too often.

What does the word “They” in paragraph 2 refer to?

Một phản ứng đang ở trạng thái cân bằng tại một nhiệt độ không đổi và thể tích bình phản ứng cố định. Nếu thêm một lượng chất sản phẩm vào bình thì

Thân máy và lắp máy động cơ đốt trong dùng để:

Một cái thùng hình trụ không có nắp, bên trong thùng có chứa một lượng nước. Một cái nút chai nhấp nhô lên xuống trong thùng (xem Hình 1), biết rằng khoảng cách từ tâm nút chai đến đáy thùng được cho bởi công thức \(s(t) = 50+ cos(t)\) cm, theo thời gian t giây (t≥0). 

Hình 1

Thứ tự thời gian (tính bằng đơn vị giây) nào sau đây có vận tốc tức thời tương ứng của nút chai giảm dần?

Đâu là thế mạnh nổi bật ở phần lãnh thổ phía tây Liên bang Nga?

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 20 to 27.

Traditional Media

Before the invention of newspapers, the main source of news was word of mouth. Any writings and drawings were done by hand. Although printing presses had existed in eastern Asia, it was Gutenberg’s invention in Europe in 1453 that made printing faster and books more accessible. It reduced the cost and size of printed books and made them the first form of mass media affordable to less wealthy people. Gutenberg’s invention also quickened the spread of discoveries and information, and promoted literacy in Europe.

The printing press led to the rise of printed newspapers that appeared regularly. The first newspapers developed from around 1612 and in a short period of time, they became very popular in Europe and the European colonies. In the 19th century, they also appeared in Asia.

Newspapers and magazines are still very popular today. Although most of them have online versions, many people continue to read print media, which is considered more credible than digital media.

In the 1920s, when radio, television, and video were introduced, the phrase “the media” began to be used. Black and white television quickly became popular in the 1950s, and in the 1960s colour broadcasts started in many countries. Thanks to its audiovisual presentation, television became one of the most important forms of mass media in the 20th century. As a source of news, entertainment, and education, it still attracts a large number of viewers today.

(Adapted from English Workbook 12 – Global Success)

The word it in paragraph 4 refers to .

Cho bảng số liệu sau:

GIÁ TRỊ XUẤT NHẬP KHẨU HÀNG HÓA CỦA LIÊN MINH CHÂU ÂU GIAI ĐOẠN 2005 - 2020

(Đơn vị: tỷ USD)

(Nguồn: Trang Thống kê Ngân hàng Thế giới)

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 28 to 34. Foot-racing is a popular activity in the United States. It is seen not only as a competitive sport but also as a way to exercise, to enjoy the camaraderie of like-minded people, and to donate money to a good cause. Though serious runners may spend months training to compete, other runners and walkers might not train at all. Those not competing to win might run in an effort to beat their own time or simply to enjoy the fun and exercise. People of all ages, from those of less than one year (who may be pushed in strollers) to those in their eighties, enter into this sport. The races are held on city streets, on college campuses, through parks, and in suburban areas, and they are commonly 5 to 10 kilometers in length. The largest footrace in the world is the 12-kilometer Bay to Breakers race that is held in San Francisco every spring. This race begins on the east side of the city near San Francisco Bay and ends on the west side at the Pacific Ocean. There may be 80,000 or more people running in this race through the streets and hills of San Francisco. In the front are the serious runners who compete to win and who might finish in as little as 34 minutes. Behind them are the thousands who take several hours to finish. In the back of the race are those who dress in costumes and come just for fun. One year there was a group of men who dressed like Elvis Presley, and another group consisted of firefighters who were tied together in a long line and who were carrying a fire-hose. There was even a bridal party, in which the bride was dressed in a long white gown and the groom wore a tuxedo. The bride and groom threw flowers to bystanders, and they were actually married at some point along the route.

The  word  “beat”  as  used  in  the  first  paragraph  could  be  best  replaced  by  which  of  the following?

Câu lệnh sau cho kết quả là gì?

for i in range(6):

print(i,end='' '')