Trong các hợp chất hữu cơ sau, hợp chất nào không được cấu tạo theo nguyên tắc đa phân?

Đặc điểm nào sau đây không có ở sinh trưởng thứ cấp?

Người ta trồng \(3\,003\) cây theo dạng một hình tam giác như sau: hàng thứ nhất trồng \(1\) cây, hàng thứ hai trồng \(2\) cây, hàng thứ ba trồng \(3\) cây, …, cứ tiếp tục trồng như thế cho đến khi hết số cây. Số hàng cây được trồng là bao nhiêu?

Chọn đáp án đúng. Cho số thực a và số nguyên dương n \(\left( {n \ge 2} \right)\). Số b được gọi là căn bậc n của số a nếu?

Her speech was _________ to all students in the hall yesterday.

Nhận định nào dưới đây nói lên đặc điểm nổi bật nhất trong sáng tác của Hồ Xuân Hương?

Chọn một từ mà nghĩa của nó KHÔNG cùng nhóm với các từ còn lại.

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 promoted in paragraph 1 can be best replaced by .

Mỹ Latinh có điều kiện thuận lợi để phát triển chăn nuôi đại gia súc do đâu?

Cho hàm số lượng giác \(f\left( x \right)=\text{sin}\left( 5x-\frac{\pi }{4} \right)\).

Tìm tập nghiệm của phương trình \(f\left( x \right)=\frac{1}{2}\).

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) ______!

Vật khối lượng 10 kg trượt không ma sát dưới tác dụng của lực F=5 N theo phương ngang.

Công suất tức thời của lực ở đầu giây thứ 5 là

Trong ngôn ngữ lập trình Python, từ khoá và tên có đặc điểm gì?

Find the word which has a different sound in the part underlined

Cho biêt đâu là ý đúng: Tiêu chí thẩm mĩ thể hiện ở điểm nào?

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 23 to 27.

People come to this small country for many reasons. They can admire spectacular (23)_________ meet friendly natives, and enjoy a vibrant arts scene. Some are searching for their family (24) _________ or others just want to get away from it all and, digging up old memories from their English Lit class of gallant heroes engaging in larger-than-life struggles, their minds wander to faraway lands, to somehow familiar yet different destinations. Why not go to Scotland? But what kind of country are they coming to and what should they expect once they get there? Scotland (25) _________ of an area of 30, 418 square miles - so it's a fairly compact and "doable" country - with a population of about five million people - not too small, not too big. It is one of three countries that form the political (26) _________ called Great Britain, the other two being, of course, England and Wales, which, along with their fourth partner, Northern Ireland, becomes the United Kingdom. Scotland is bordered on three sides by water and on its fourth by England, which has had both its advantages and disadvantages. Geographically speaking, the country can be divided into three broad areas, the Southern Uplands, the Central Lowlands, and the Highlands. Although the rugged Highlands (27) _________ about two-thirds of the land area, the vast majority of the population lives in the Central Belt between Glasgow, Scotlands largest city, and Edinburgh, Scotland's capital.

Trong chu kì tế bào, nhiễm sắc thể nhân đôi ở giai đoạn nào sau đây?

Cho hàm số \(y=\sqrt{2 x-x^{2}}\). Biết hàm số nghịch biến trên đoạn \((a ; b)\(, Tính \(a+2 b\).

Trong mặt phẳng toạ độ \(Oxy\) cho các vectơ \(\vec a,\vec b,\vec c,\vec d\) được vẽ ở hình bên. Ta có các khẳng định sau:

A) \(\vec a = (2; - 3)\); B) \(\vec b = ( - 3;0)\); C) \(\vec c = (5;1)\); D) \(\vec d = (4;0)\).

Số khẳng định đúng là?

Theo em, người cho vay chỉ cấp tín dụng khi có lòng tin vào việc người vay sử dụng vốn vay đúng mục đích, hiệu quả và có khả năng hoàn trả nợ đúng hạn là nói đến đặc điểm nào sau đây của tín dụng?