Việc làm của Ngô Tử Văn có ý nghĩa gì?

Nguyễn Tuân sinh và mất năm nào?

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

Tom never stays in one place for long. He always gets _________ feet and sets off on his travels again.

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.    Jack: No way! Can you show me? I want to turn my selfie into something cool too.

b.    Emma: Sure! It's free to download and super easy to use. Maybe you can be a green lion with sunglasses!

c.    Emma: Did you try that new app that turns your photos into cartoon animals? I made myself into a purple giraffe!

Công suất của một máy có thể biểu thị bằng tích của

Cho các cân bằng hóa học sau:

(a) \(\mathrm{H}_{2}(\mathrm{g})+\mathrm{I}_{2}(\mathrm{g}) \leftrightarrow 2 \mathrm{HI}(\mathrm{g})\)

(b) \(2 \mathrm{NO}_{2}(\mathrm{g}) \leftrightarrow \mathrm{N}_{2} \mathrm{O}_{4}(\mathrm{g})\)

(c) \(\mathrm{N}_{2}(\mathrm{g})+3 \mathrm{H}_{2}(\mathrm{g}) \leftrightarrow 2 \mathrm{NH}_{3}(\mathrm{g})\)

(d) \(2 \mathrm{SO}_{2}(\mathrm{g})+\mathrm{O}_{2}(\mathrm{g}) \leftrightarrow 2 \mathrm{SO}_{3}(\mathrm{g})\)

Ở nhiệt độ không đổi, khi thay đổi áp suất chung của mỗi hệ cân bằng, cân bằng hóa học nào không bị chuyển dịch?

Ranh giới để phân biệt pháp luật với các quy phạm xã hội khác là:

Xét một đoạn dây dẫn thẳng có chiều dài L=2,5 m, có dòng điện I=0,6 A chạy qua được đặt trong từ trường đều có cảm ứng từ \(B={{6.10}^{-2}}\) T. Biết chiều dòng điện hợp với vectơ cảm ứng từ một góc 45^o, độ lớn của lực từ trong trường hợp này bằng ​

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 is mentioned about the man who used his cellphone too often in paragraph 3?

Chọn cặp từ/ cụm từ thích hợp nhất điền vào chỗ trống.

Việc chuyển đổi từ đĩa nhựa sang các tập tin kỹ thuật số bắt đầu vào khoảng năm 2000, _____ là dưới hình thức tải xuống và _____ là phát trực tuyến, có vẻ như là một sự thay đổi đáng hoan nghênh.

Một chuyển động thẳng đều có đồ thị độ dịch chuyển – thời gian như hình vẽ. Tìm kết luận sai mà một học sinh đã suy ra từ đồ thị.

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. David: That’s interesting. So, what’s driving this shift from rural to urban areas?

b. Anna: Hi David! I heard you’re visiting Vietnam for the first time. What do you think of the cities here?

c. Anna: Well, the main factor is economic development. As Vietnam’s economy has grown, especially after the economic reforms in the 1980s, industries and businesses have expanded in urban areas. This has created a demand for labor, attracting people from the countryside.

d. Anna: You’re absolutely right! Vietnam has been undergoing a major process of urbanization over the last few decades. More and more people are moving from rural areas to cities in search of better job opportunities and living standards.

e. David: Hi Anna! Yes, I’m really impressed. I’ve been to Hanoi and Ho Chi Minh City, and I’ve noticed a lot of construction going on. It seems like Vietnam is rapidly urbanizing.

Mệnh đề phủ định của mệnh đề ''$\exists x \in \mathbb{R}: \, 5x-x^2=0$'' là

Cho hàm số \(y=f\left( x \right)\) xác định và liên tục trên các khoảng \(\left( -\infty ;1 \right)\) và \(\left( 1;+\infty  \right)\), có bảng biến thiên như sau.

Xét tính đúng, sai của các câu sau:

Để xóa liên kết giữa hai bảng, trong cửa sổ Relationships ta thực hiện ra sao?

Electron chuyển từ lớp gần hạt nhân ra lớp xa hạt nhân thì phải

Câu nào dưới đây dùng từ sai về nghĩa?

Một vật chuyển động với vận tốc 1m/s có động năng 1J. Khi vật có vận tốc 3m/s thì động năng của vật là

Read the following passage about the impact of tweeting on everybody 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 18 to 22

EVERYBODY’S TWEETING

Twitter (18) ________________ for a podcasting website, but then people realized that it offered them the power to connect with millions of people instantly. Suddenly, everyone had a voice, as long as it wasn’t longer than 140 characters. But what are we using it for, and just how is Twitter changing the way we do things?

Perhaps the greatest impact Twitter has had is on breaking news. Before Twitter, (19) _____________ before finally broadcasting it on the radio or TV. These days, anyone who happens to be in the right place at the right time with a Twitter account can post news the second it happens. For example, Janis Krums posted a photo and a tweet when he witnessed a US flight making an emergency landing in the Hudson River. He must never have imagined that he would break the story to the world.

Following Pop Idols

Young people have always loved to follow their pop idols, and Twitter has made it a whole lot easier. Before the Internet, teenagers used to join the fan clubs of their favorite bands and write letters to their heroes,

(20) _________________ to get a reply written by the club secretary. Today’s teenagers don’t need to wait. By following their idols on Twitter, they get all the news the minute it happens: their meals, activities, or even thoughts. And all the news comes directly from the bands themselves.

Creating Movements

Twitter allows people who think the same way to get together and (21) ______________. These problems may be cyberbullying, sexism, or racism. They can share information, organize campaigns, and put pressure on related departments. Twitter has given the man and woman on the street the power to make a difference.

Identifying the source of a piece of news

It’s good to get an idea of the background of a person who says or writes something. Are they an impartial expert or someone who wants to change your opinion to suit their own agenda? For example, this statement about a flu epidemic, “Patients can already spread the virus a day before they’ve even fallen sick themselves”, is more likely to come from a doctor than a politician. On the other hand, “We have to stop people who are carrying the virus from getting into the country” is more likely to come from a politician. (22) _____________, you’re better able to decide how much importance to give it and whether you can really trust what they say.