Cần 6780 kJ để làm bay hơi hoàn toàn 3 kg chất lỏng, nhiệt hóa hơi riêng của chất lỏng đó là

Read the following passage about The Longitude Prize and mark the letter A, B, C, or D on your answer sheet to indicate the best answer to each of the following questions

     On a stormy night in 1707, four ships struck rocks off the south coast of England and sank. [I] One thousand, four hundred sailors were drowned. [II] The ships had crashed because they had no way of knowing how far they had travelled in a particular direction; they could not calculate their longitude, which required accurate time measurement. [III] In such difficult circumstances, they believed that the best response to the disaster was a competition: the Longitude Prize. [IV]

     The Longitude Prize was no ordinary competition. To win it, someone had to find a way of calculating how far a ship had travelled east or west from its point of departure. Geniuses such as Sir Isaac Newton had failed to find a solution, so to ensure the interest of Britain’s greatest scientific minds, the government offered a prize of £20,000 — the equivalent of £2.6 million in today’s money. But to everyone’s surprise, it wasn’t a famous academic who solved the problem, but an unknown carpenter.

     When John Harrison wasn’t working with wood, he was making clocks. An accurate clock would allow sailors to calculate their position, but at the time it was thought impossible to create a mechanical clock that could work on a ship. The movement of the sea and the changes in temperature destroyed the delicate parts. However, after three frustrated attempts, Harrison’s fourth sea clock, H4, finally triumphed. Its mechanics were so good that the H4 worked better than most clocks on land.

   The Longitude Prize and Harrison’s success generated a lot of interest in the 18th century, but it was soon forgotten. However, in 2013, the British government created a new Longitude Prize, offering £10 million to the person who could solve a great challenge to humanity. An enthralled public then took part in a TV programme where viewers chose one challenge from a list of six for scientists to focus on. The question now is, will someone be able to solve it just as well as Harrison solved the challenge presented to him?

Which of the following best paraphrases the underlined sentence in paragraph 4?

Để nhập từ bàn phím biến a kiểu nguyên ta viết:

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 23 to 30.

The 22nd Southeast Asian Games were held in Vietnam from December 5th to 13th, 2003. It marked the first time Vietnam hosted such a significant sporting event, yet the Games were a great success. They became a grand festival that impressed sports enthusiasts with their spirit of solidarity, cooperation for peace, and development. The event demonstrated Vietnam's capability to unite the region through sports.

Athletes from 11 participating countries competed in 32 sports, winning a total of 444 gold medals. Teams in table tennis, badminton, karate, volleyball, basketball, and wrestling showcased some of the region’s top competitors. Notably, many records set during the Games were close to international standards. Vietnam emerged victorious, securing 158 gold medals and finishing at the top of the medal standings. Thailand came second with 90 golds, while Indonesia ranked third with 55. Singapore and Vietnam were the only nations with participants honored as the Most Outstanding Athletes in Swimming and Shooting events.

In football, the Vietnamese Women's Football team successfully defended their SEA Games title, a moment of pride for the host nation. In the Men's Football Final, Vietnam faced Thailand but lost, with the Thai team taking home the gold medal. Other sports, such as karate, athletics, bodybuilding, and wushu, saw young and talented Vietnamese athletes delivering exceptional performances and securing numerous gold medals. The strong performance of the athletes reflected Vietnam's growing prowess in the regional sports arena.

Vietnam’s first-place finish was not surprising. To prepare for the 22nd SEA Games, the country implemented an intensive training program for its athletes, involving both domestic and international facilities. Furthermore, the enthusiastic support from the Vietnamese people inspired the athletes to compete in high spirits. This success solidified Vietnam’s reputation as an excellent host for international sporting events. With this achievement, Vietnam has demonstrated its potential to host even larger competitions, such as the Asian Games, in the future.

In which paragraph is the preparation for the Games discussed?

Nhân tố nào dưới đây giúp cho ngành hoạt động du lịch của nước ta phát triển và diễn ra quanh năm?

These companies were accused on having released a large amount of carbon dioxide into the atmosphere.

Read the following passage about effective English language learning 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 from 18 to 22.

Learning a new language, especially English, can be both challenging and rewarding. To maximize your language learning potential, it's essential to adopt effective strategies. ___(18)___. By understanding your learning style and setting clear goals, you can create a personalized learning plan.

One of the most effective ways to improve your English is through consistent practice. ___(19)___. This could involve reading books, articles, or news, watching movies or TV shows, or listening to English songs or podcasts.

To enhance your speaking skills, it's crucial to engage in regular conversation practice. ___(20)___. Joining language exchange groups or finding a language partner can provide opportunities to practice speaking and receive feedback.

While practice is essential, it's equally important to learn correct grammar and vocabulary. ___(21)___. Using grammar books, online resources, or language apps can help you master the rules of English grammar.

In conclusion, effective English language learning requires a combination of consistent practice, strategic learning, and a positive mindset. ___(22)___. By embracing these strategies, you can achieve your English language goals and open up new opportunities.

Đầu thế kỉ XX, nước Nga đứng trước tình thế gì?

Một ống nghiệm chứa chất lỏng X. Biết rằng X có thể là hexane hoặc hex-1-yne. Cách làm

nào dưới đây xác định được chất X?

Read of the following leaflet 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 7 to 12.

Different Paths, One Journey: Celebrating Humanity Together

A Global Cultural Festival

Join Our Celebration

Some people like busy city life, while (7)_________ enjoy quiet country living. We want to bring people together and help them (8)_________ each other.

The festival will show many (9)_________ of music from around the world. (10)_________ our plan, the event will last for three days.

The party will have many (11)_________ and fun activities for everyone. (12)_________ of the food will be there, with some of the dishes from different countries.

Things To Do:

Try foods from different countries

Watch dance shows

Learn simple words in new languages

Make friends from other places

Play games from around the world

Contact: hello@festival.org | 555-1234

"We are different but we are friends!"

Nhận định nào không đúng với vận động nội lực theo phương nằm ngang?

Quốc gia nào có chiều dài đường ống lớn nhất thế giới?

Thể tích toàn phần:

Carbohydrate được chia thành đường đơn, đường đôi và đường đa dựa vào yếu tố nào?

Hệ thống chính trị của nước Cộng hoà xã hội chủ nghĩa Việt Nam bao gồm những cơ quan nào?

Việc làm nào sau đây không phải là biểu hiện quyền tham gia quản lí nhà nước và xã hội của công dân?

Công dân có nghĩa vụ gì trong việc thực hiện pháp luật về thuế.

Read the following leaflet and mark the letter A, B, C or D on your answer sheet to indicate the option that bestfits each of the numbered blanks from 7 to 12.

Join Our Student Exchange Program!

Are you eager to explore a new culture, improve your language skills, and make lifelong friends? Our Student Exchange Program is the perfect opportunity for you!

Students from our school will have the chance to study abroad while welcoming (7) ______ students into their homes. This is a great way to experience different educational systems and lifestyles.

During the program, you will (8) ______ new challenges, such as adapting to a new environment and communicating in a foreign language. (9) ______, these experiences will help you grow both academically and personally.

Participants will receive full (10) ______, including accommodation, meals, and tuition fees.

Instead of traveling as a tourist, why not become a local for a semester? This exchange allows you to fully immerse yourself in a new culture.

This program helps students develop essential skills such as independence, adaptability, and (11) ______.

Apply now and take the first step towards an unforgettable experience in international (12) ______!

Cho phương trình lượng giác \(2\text{sin}x=\sqrt{2}\).