Một vật dao động điều hòa khi vật có li độ  $x_1=3\text{ cm}$ thì vận tốc của vật là  $v_1=40\text{ cm/s,}$ khi vật qua vị trí cân bằng thì vận tốc của vật là  $v_2=50\text{ cm/s.}$ Tần số của dao động điều hòa là

Phân tích vật chất di truyền của 4 chủng gây bệnh thì thu được kết quả như sau:

 Kết luận nào sau đây không đúng?

Read the following passage about online dating 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.

Psychologists have found many advantages and disadvantages to online dating. Among the many criticisms aimed at online dating, the most severe concern is its effects on people's self-esteem and mental health.

Swipe left or right is the main feature of popular dating apps, where users quickly look at profiles. However, this system is criticized for being superficial. A study showed that users often feel less satisfied with their appearance. Jessica Strübel found that after a while, users begin to feel less like unique, special individuals and more like they're disposable. This feeling leads to users becoming increasingly sensitive about their looks and bodies, heightening self-consciousness. Dating apps also added to the idea that there's always something better around the corner, which further pressures users into trying to appear more attractive.

Dating apps not only harm self-esteem but also alter perceptions of relationships. By accelerating the dating process, these apps encourage poor social behavior. For instance, it's not unusual for people to ignore "likes" and messages or to lose interest and cut off communication. This behavior would have been considered extremely rude in the past. But with online dating, it is a common reality.

Furthermore, thirty-five percent of users actually reported feeling pessimistic about dating. Only twenty-eight percent of surveyed users reported feeling hopeful after using a dating site or app.

Which of the following is TRUE according to the passage?

Điện thế là đại lượng đặc trưng cho riêng điện trường về

Thể chế chính quyền thời Lê - Trịnh thường gọi là gì?

Nhiệt độ ảnh hưởng đến cây trồng như thế nào?

Một acquy có suất điện động là 12V, sinh ra công là 720 J khi dịch chuyển điện tích ở bên trong. Biết thời gian dịch chuyển lượng điện tích này là 5 phút. Cường độ dòng điện chạy qua acquy khi đó là

Khi thực hành đo huyết áp bằng huyết áp kế điện tử, cần lưu ý điều gì dưới đây?

Loài sinh vật nào dưới đây trao đổi chất và chuyển hóa năng lượng theo kiểu hóa tự dưỡng?

Read the 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.

We seem to be entering a boom era for greenwashing - the tactic of covering routine pollution in eco-friendly language. [I] Picture running a high-emitting corporation: meaningful decarbonisation would demand painful negotiations, huge capital outlays, and a full redesign of the business model. Hiring an expert agency to splash "carbon- neutral" or "net-zero" across products is far easier, buying time while emissions remain untouched.

Consumers meet this sleight of hand everywhere. Airlines sell "carbon-neutral" flights, filling stations boast about "net-zero" fuel, and breakfast bacon is re-labelled as planet-safe. Advertising spin is old, yet today it is manipulated to conceal ongoing environmental damage. Social media influencers and glossy sustainability reports amplify these claims, broadcasting the narrative far beyond traditional marketing channels.

The term greenwashing emerged in the 1980s, an era of oil spills and growing climate science, but the practice has exploded only recently. [II] Intensifying public anxiety over global heating and ecosystem collapse has placed companies under sharp scrutiny; many boards therefore choose eye-catching PR over the tougher route of restructuring supply chains, energy sources, and product lines. Regulators on both sides of the Atlantic are struggling to police false eco-claims, yet enforcement still lags behind corporate ingenuity. Investors, eager to protect short-term returns, frequently applaud these surface-level initiatives, reinforcing the cycle. [III] No sector illustrates the issue better than oil and gas. Having realised that denying climate science now backfires, the industry has swapped denial for "green" paint. Press releases trumpet potential renewable ventures while drilling plans expand unabated.

Why does this matter? Greenwashing and climate denial share a core objective: to postpone the deep emission cuts claimed by scientists as urgent this decade. [IV] Whereas denial disputes the crisis, greenwashing misleads the public into believing problems are solved, thereby eroding consumer advocacy of genuine environmental actions and stalling regulatory reforms. In effect, it acts as a soothing lullaby, guiding society ever closer to ecological breakdown while fostering a false sense of progress. Exposing the facade-and insisting on verifiable, measurable carbon reductions-is essential if rhetoric is to give way to real action.

(Adapted from www.greenpeace.org.uk)

Where in the passage does the following sentence best fit?

Yet greenwashing is arguably more insidious.

Mỗi phát biểu sau đúng hay sai:

Chọn ý đúng: Các hạt trong dung dịch chuyển động theo hướng nào trong quá trình khuếch tán thụ động?

Cho phương trình lượng giác \(3-\sqrt{3}\text{tan}\left( 2x-\frac{\pi }{3} \right)=0\).

Read the following passage about the Second Acts That Inspire 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.

Life often presents us with unexpected challenges that force us back to the drawing board. Whether due to personal setbacks, career changes, or unforeseen circumstances, the courage to begin again can lead to remarkable transformations. Many inspiring individuals have shown that it's never too late to reinvent oneself and pursue new dreams. Throughout history, countless people have overcome seemingly impossible situations through sheer determination.

[I] Take J.K. Rowling, for instance. Before becoming a literary sensation, she was a struggling single mother living on welfare. [II] Her determination eventually paid off when her books became a global phenomenon, proving that setbacks can become stepping stones to success. [III] This remarkable turnaround demonstrates how resilience and unwavering belief in oneself can overcome seemingly insurmountable obstacles. Despite facing depression and financial hardship, she never gave up on her dreams. [IV]

Colonel Harland Sanders' story is another testament to the power of starting anew. At the age of 65, when most people contemplate retirement, he found himself struggling financially after his restaurant failed. Instead of giving up, he traveled across America, sleeping in his car while pitching his chicken recipe to restaurant owners. His recipe for success wasn't just about the perfect blend of herbs and spices; it was about persistence and determination. After facing over 1,000 rejections, he finally established Kentucky Fried Chicken, which grew into a global empire. His unwavering spirit and dedication inspired generations of entrepreneurs worldwide.

These inspiring stories remind us that failure is not final, but rather a chance to redirect our path. Every setback carries the seed of an equal or greater opportunity, and sometimes the end of one chapter is simply the beginning of a better one. The key lies in having the courage to take that first step, even when the future seems uncertain. As these remarkable individuals have shown, it's never too late to rewrite your story and create a powerful second act. Their journeys teach us that persistence and courage ultimately lead to success.

Which of the following best summarises the passage?