Biểu hiện nào sau đây không chứng tỏ Liên bang Nga là một đất nước rộng lớn?

Ý nghĩa của kí hiệu dưới đây là gì?

Read the following passage about powering 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. 

TikTok is a popular social media app where people can create and share short videos [I]. It started in China in 2016 as Douyin [II]. The app is known for its easy-to-use tools that let users add music, effects, and filters to their videos [III]. People of all ages enjoy making and watching TikTok videos, which can be funny, educational, or creative [IV].

One of the reasons TikTok is so popular is because of its algorithm, which shows users videos that match their interests. When you open the app, you see a personalized feed called the "For You" page. This page is different for everyone and updates with new videos all the time. Users can also follow their favorite creators to see more of their content.

TikTok has become a platform for trends and challenges. Many users participate in dance challenges, lip-syncing, and other viral activities. These trends can spread quickly, reaching millions of people in a short time. Because of this, TikTok has influenced music charts, fashion, and even language. Songs that go viral on TikTok often become hits on other platforms too.

The app is also a space for education and advocacy. Many creators use TikTok to share knowledge about various topics, such as science, history, cooking, and fitness. Others use the platform to raise awareness about social issues and promote positive change.

In addition to individual creators, many brands and businesses use TikTok for marketing. They create content to engage with their audience, often using popular trends and challenges to promote their products.

However, TikTok has faced some criticism and challenges. Concerns about privacy and data security have led to scrutiny from governments. Despite these issues, TikTok still remains one of the most downloaded apps in the world.

The word their in paragraph 2 refers to ______.

Trong mặt phẳng cho 10 đường thẳng cắt nhau đôi một, nhưng không có 3 đường thẳng nào đồng quy. Số giao điểm và số tam giác được tạo thành lần lượt là:  

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 31 to 40.

Biting into a ripe, juicy fruit brings a smile to many people’s faces. But eating that same fruit a week before it is ripe probably wouldn’t be as enjoyable! Unripe fruits are often hard and bitter, but that serves a purpose. The hard exterior of an unripe fruit protects the developing seed inside. After a seed fully develops inside the fruit, the fruit changes color, softens, and gets sweeter to become more attractive to animals and humans. These organisms eat the fruit and spread its seeds, ensuring the plant’s survival and regrowth.

But how does a fruit ripen? The ripening process involves many complex chemical reactions. When a fruit ripens, it goes through a chemical change. A chemical change happens when bonds within molecules break, and the atoms that once formed them regroup into new molecules. Chemical changes are irreversible. Once a fruit ripens, it cannot become unripe again.

One molecule responsible for this chemical change is ethylene. Ethylene (C2H4) is a colorless gas made up of carbon and hydrogen atoms. (I). It is a naturally occurring molecule in the atmosphere. (II). It is also an important plant hormone. (III). Plants release ethylene through the growing tips of roots, flowers, and ripening fruit. (IV). Although ethylene serves other purposes in plants, one of its main purposes is to trigger the chemical reactions that cause fruits to ripen. As the fruit matures, oxygen in the air helps stimulate the production of ethylene. This ethylene production is a signal that begins fruit ripening. For that reason, unripe fruits have low levels of ethylene, while ripe fruits have higher levels of ethylene. Most fruits produce ethylene and respond to ethylene in the atmosphere.

Although fruits require ethylene to ripen, different types of fruits respond to this molecule in two distinct ways: non-climacteric fruits and climacteric fruits. Non-climacteric fruits do not ripen after harvesting. They produce very little ethylene of their own. Climacteric fruits, on the other hand, continue to ripen after they are picked. These fruits produce a large amount of ethylene. Climacteric fruits can also speed up the ripening process of other fruits nearby since they release high levels of ethylene into the air.  

Which of the following can be inferred from the passage?

Cho biết 120 bit bằng bao nhiêu byte?

Quá trình hấp thu khí oxygen và thải ra khí carbon dioxide được diễn ra tại hệ cơ quan nào sau đây trong cơ thể?

Cho bảng số vận tải hàng hóa bằng đường hàng không chia theo hình thức giai đoạn 1995 – 2020, đơn vị: nghìn tấn (Niên giám thống kê Việt Nam 2021, Nxb Thống kê, 2022): 

Nhận xét nào sau đây đúng với bảng số liệu trên?

Cho các giải pháp sau:

1. Điều trị ung thư bằng tế bào gốc

2. Thay thế, cấy ghép cơ quan

3. Nhân bản vô tính

4. Phòng bệnh bằng vacccine

5. Chữa bệnh bằng kháng thể đơn dòng

Bao nhiêu giải pháp được áp dụng trong khám chữa bệnh ở người?

Đâu là nhận định thể hiện các đặc điểm của thị trường?

Tại sao Lênin lại nhận định: Anh là chủ nghĩa đế quốc thực dân?

Đâu không phải là một hoạt động của nền kinh tế nước ta?

Hai câu ca dao sau nói lên điều gì?

“Con ơi, mẹ bảo câu này

Cướp đêm là giặc, cướp ngày là quan”.

Dòng điện có chiều quy ước là chiều chuyển động của

Cho bất phương trình \(5(2x - 3y) - 3(2x - y + 7) > x - 3y\). Điểm nào dưới đây thuộc miền nghiệm của hệ?

Cuối buổi liên hoan trước khi ra về, mọi người đều bắt tay nhau, hai người bất kì chỉ bắt tay nhau một lần. Hỏi số người tham dự là bao nhiêu? Biết số cái bắt tay là 28.

Sinh sản bằng bào tử là một giai đoạn trong vòng đời của loài thực vật nào?

Read the following advertisement 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 1 to 6.

Heirloom Moments™: Family Traditions Reimagined for the Quantum Age

The revolutionary technology transforms how families (1)_________ across generations. Our (2)_________ creates unforgettable experiences for everyone.

Families (3)_________ our service report stronger connections with distant relatives. We send photos (4)_________ grandparents through our secure platform.

When it comes to preserving memories, Heirloom Moments™ (5)_________ the cake! We encourage you to start your family's digital legacy today.

Visit our website or call us today (6)_________ more about how Heirloom Moments™ can help your family stay connected across time and space!

Nội năng của một vật là

Hoạt động đối ngoại của Đảng Cộng sản Đông Dương trong giai đoạn 1930-1940 là