Nền chính trị của Cham-pa không mang đặc điểm nào sau đây?

Một đoạn của phân tử DNA có trình tự một mạch như sau:

T – A – G – C – G – C – T – A – A – G

Đoạn trình tự mạch bổ sung của đoạn phân tử DNA trên là

Để đánh giá quy mô, cơ cấu kinh tế, tốc độ tăng trưởng và sức mạnh kinh tế của một quốc gia, người ta dùng chỉ số nào?

Bản chất của công nghệ hàn là:

Hạt nhân nào sau đây có thể phân hạch 

Nguyên nhân chính phía Đông của Liên Bang Nga không thuận lợi cho phát triển nông nghiệp?

Nguyên tử oxygen có 8 proton, vậy điện tích hạt nhân của nguyên tử này tính theo đơn vị culong là

Read the following passage about How Failures Led to Breakthroughs 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.

Many important discoveries happened because of mistakes and unexpected accidents. Alexander Fleming found penicillin when he left his laboratory messy before going on holiday. After vacation, he saw mold growing on his experiment plate. Fleming noticed this mold killed bacteria around it very effectively. This fortunate accident later saved millions of lives around the world. Scientists call finding valuable things by chance "serendipity," which happens often in research.

The Post-it Note began as a mistake that seemed useless at first. In 1968, Spencer Silver tried making a strong glue for 3M company but created a weak one instead that didn't stick permanently. Nobody knew what to do with this disappointing result for several years. Then his colleague Arthur Fry realized this "failure" could make perfect bookmarks that wouldn't damage pages when removed. This weak adhesive eventually became one of the most popular office products worldwide, changing how people work.

In cooking, many favorite foods came from kitchen errors and quick substitutions. Ruth Wakefield invented chocolate chip cookies when she ran out of baker's chocolate and used broken pieces of semi-sweet chocolate instead. She thought they would melt completely in the dough, but they kept their shape during baking. Potato chips were created when chef George Crum made extremely thin potatoes to annoy a customer who repeatedly complained about thick fries. Surprisingly, the customer loved them and ordered more!

These fascinating stories teach us that mistakes can lead to new opportunities and unexpected innovations. Thomas Edison said about his many failed light bulb attempts, "I haven't failed. I've just found 10,000 ways that don't work." This positive attitude shows we should see errors as valuable learning chances. Smart people don't fear making mistakes in their work; they fear missing opportunities to learn from them and discover something amazing.

Which of the following is TRUE according to the passage?

Một vật được thả rơi tự do. Lấy gia tốc rơi tự do là 9,8 m/s². Hỏi quãng đường vật đi được trong giây thứ ba kể từ lúc được thả rơi là bao nhiêu?

Hi Thao,

I hope you're doing well. You asked about my family routines, so let me tell you about three of them.

a. Third, once a month, we clean the garden together. My mum takes care of the flowers, my dad trims the trees, and I sweep the paths.

b. First, every Saturday morning, my family goes cycling in the park. We start early, ride for about an hour, and then have breakfast at a small café. It's healthy and fun.

c. Second, on Wednesday evenings, we have a “no phone” rule.

d. These routines are special to me because they keep us connected and give us good memories.

e.We turn off our devices and spend time talking, playing cards, or doing puzzles. It helps us focus on each other without distractions.

What kind of routines does your family follow?

Please write back soon.

Best regards,

Lan

Read the following advertisement/school announcement and mark the letter A, B, C, or D on your answer sheet to indicate the correct option that best fits each of the numbered blanks from 10 to 15.

WANT TO BE A TOUR GUIDE?

Are you over 18? Are you interested (10) _______ travelling and exploring different cultures?

Apply to ABC Vocational School. We provide tour guide training courses all year round:

- No (11) _______ qualifications needed

- Low cost

- Apprenticeships provided

Contact (12) _______:

- Email: abcxyz@web.mail

- Address: 100 Olden Street, Ballack Clava

Đơn phân cấu tạo nên nucleic acid có

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)

In which paragraph does the writer explain why the cost of a type of media decreased?

Tác dụng vào vật 2 kg đứng yên một lực không đổi 10 N làm vật trượt theo phương ngang. Sau 2 giây vật có vận tốc 6 m/s, lấy g=10 m/s². Hệ số ma sát giữa vật và sàn là \(\mu \).

Tế bào là đơn vị cấu trúc của mọi cơ thể sinh vật vì

Kết quả của các câu lệnh sau là gì?

s = "12 34 56 ab cd de "

print(s. find(" "))

print(s.find("12"))

print(s. find("34"))

Choose the word that differs from the rest in the position of the main stress: parent, moment, packing, agree

I washed the dishes yesterday, but I _____________ no time to do it today.

Vai trò của hoạt động trao đổi với người sản xuất và người tiêu dùng là gì?