Cho biết: Khối thứ hai trong sơ đồ khối mạch điều khiển tín hiệu là?

Ý kiến nào sau đây chưa đúng khi nói về hệ thống chính trị ở Việt Nam?

Read the following advertisement about a new travel platform 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.

FAQ on Finding Travel Buddy

What is the concept of finding a travel buddy at Join MyTrip?

You can find a travel buddy by joining trips hosted by (1) ________, whom we call TripLeaders. The trips are (2) ________ handpicked and curated, offering you the best experience you can't find anywhere else. The TripLeaders will be (3) ________ charge of these trips, from designing the itinerary (4) ________ the way. Furthermore, TripLeaders will accept travelers, (5) ________ TripMates, on their trips and travel together. So, by joining our trips, you can (6) ________ with other amazing travelers from all over the world.

Người ta sử dụng Auxin tự nhiên (AIA) và Auxin nhân tạo (ANA, AIB) mục đích 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.

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

Cách đây 4 vạn năm trên Trái Đất đã xuất hiện:

Theo công suất, máy động lực có loại nào?

Khi cung lớn hơn cầu, sẽ dẫn đến tình trạng nào sau đây?

Con hãy lựa chọn đáp án Đúng hoặc Sai

Đỗ Phủ là nhà thơ nổi tiếng của nhà Thanh, đúng hay sai?

Read 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.

STAY SAFE: UNDERSTANDING SCAMS AND HOW TO PREVENT THEM

What is a scam?

A scam is a deceptive scheme delivered through digital communications with the intent to steal money or personal information. These schemes take many forms, including online fraud, phishing emails, and fake lotteries. In (7) _____ words, scams are tricks that prey on your trust and can lead to significant financial loss.

Common types of scams

-          Phishing: fraudulent emails or messages that appear to be from legitimate sources, tricking you into (8) _____ personal information.

-          Lottery scams: notifications claiming you’ve won a (9) _____, requiring you to pay a fee to claim it.

-          Other scams: these can include fake charities, advance-fee scams, and online auction fraud, each designed to exploit individuals in different ways.

Tips to prevent scams

-          Verify sources: always check the (10) ____ of requestions for personal information.

-          Root out suspicious communications: don’t engage with unknown contacts and report any suspicious emails or calls to the authorities (11) _____ potential scams.

-          Protect your information: use strong passwords and enable two-factor authentication on your accounts to add an extra (12) ______ of security.

Hệ thống kĩ thuật được chia làm mấy loại?

Điền số liệu còn thiếu (dưới dạng số thập phân) để hoàn thành bài tập sau:

Trong tự nhiên, carbon có hai đồng vị bền là ¹²C và ¹³C, chiếm tỉ lệ số nguyên tử lần lượt là 98,9% và 1,1%.

- Nguyên tử khối trung bình của carbon là amu.

- Số mol carbon có trong 2,4022 gram than chì (giả sử chỉ chứa toàn nguyên tố carbon) là mol.

- Số mol ¹²C có trong lượng than chì trên là mol.

Nhận định nào sau đây đúng khi bàn về vấn đề thị trường?

Nguyên tố X có Z = 9. Hãy có biết tính chất hóa học cơ bản của X (X là kim loại hay phi kim, mạnh hay yếu)?

Read the following passage about the Science in Service of Humanity 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.

Science has come out of its shell in laboratories to become a powerful force for human advancement. Modern scientific endeavors increasingly focus on addressing real-world challenges affecting communities globally. From developing vaccines that save millions to creating technologies connecting people across continents, science serves humanity in countless ways. This shift represents a fundamental evolution in how we perceive scientific progress—not merely academic pursuit but a practical tool for improving lives and solving pressing problems.

[I] Medical breakthroughs exemplify how science directly benefits humanity. [II] For instance, gene therapy offers hope for those with inherited conditions, while artificial intelligence helps diagnose diseases earlier and more accurately. [III] These advancements didn't happen overnight; scientists had to burn the midnight oil for years before achieving success. [IV] Their perseverance demonstrates that when science targets humanitarian goals, results can transform society profoundly.

Environmental science has emerged as another crucial domain where laboratory work translates into human welfare. Climate scientists provide data informing policy decisions affecting billions. Conservation biologists develop strategies to protect biodiversity, ensuring future generations benefit from natural resources. Agricultural researchers create drought-resistant crops helping communities withstand changing climate conditions. Despite these contributions, environmental science faces challenges including funding limitations, political resistance, and urgency of addressing accelerating climate change. Nevertheless, dedicated scientists continue their work, recognizing environmental health directly impacts human wellbeing.

The future of science in service of humanity looks increasingly collaborative and inclusive. Modern approaches incorporate diverse perspectives, including indigenous knowledge and community participation. Citizen science projects engage non-professionals in data collection, democratizing the scientific process. Open-access publishing makes research findings available to anyone with internet access, not just wealthy institutions. These developments suggest science's greatest potential lies in becoming more accessible and responsive to human needs. As we face complex global challenges, from pandemics to climate change, science serving humanity offers our best hope for a sustainable future.

Which of the following can be inferred from the passage?

Đồ thị vận tốc – thời gian của chuyển động thẳng đều là một đường thẳng

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

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

Với giá trị $x \in \mathbb{R}$ nào dưới đây thì mệnh đề chứa biến $P( x)$: "$x + 1 < x^2$" đúng?

Có 6 người sống ở các tầng khác nhau của một tòa nhà 6 tầng: A và B ở căn hộ có 1 phòng ngủ; C, D và E sống ở căn hộ có 2 phòng ngủ; F ở căn hộ có 3 phòng ngủ; căn hộ ở tầng 2 có 2 phòng ngủ; F sống ở tầng thấp hơn D; C sống ở tầng thấp hơn B; căn hộ ở tầng 5 hơn căn hộ ở tầng 3 một phòng ngủ.

A không thể sống ở tầng nào dưới đây?