Một sợi dây đàn hồi dài  100cm có hai đầu 50Hz cố định. Một sóng truyền có tần số  20m/s với tốc độ truyền sóng là  20m/s  Số bó sóng trên dây là

Một vật chuyển động trong \(3\) giờ với vận tốc \(v\) (km/h) phụ thuộc thời gian \(t\) (h). Trong khoảng thời gian \(1\) giờ kể từ khi bắt đầu chuyển động, vận tốc của nó là \(v=-\frac{5}{4}{{t}^{2}}+5t+4\); trong khoảng thời gian còn lại vật chuyển động đều.

Chủ thể sản xuất là đối tượng nào dưới đây?

Read the following passage about a multicultural world 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.

[I] In today’s interconnected world, multiculturalism has become increasingly prevalent as people from diverse cultural backgrounds live and work together in the same communities. [II] Multiculturalism fosters cultural diversity, promoting understanding and tolerance among individuals with different perspectives and traditions (Banks, 2015). [III] However, while multiculturalism brings many benefits, it also poses certain challenges that need to be addressed to achieve a harmonious society (Parekh, 2000). [IV]

One of the key benefits of multiculturalism is the enrichment of society through diverse perspectives. Different cultural backgrounds contribute unique ideas, art forms, and traditions, which can lead to a more vibrant and innovative community. For instance, diverse viewpoints in the workplace often drive creativity and lead to better problem-solving solutions. Additionally, exposure to various cultures can increase people's awareness and acceptance of others, thus reducing discrimination and promoting social cohesion.

However, a multicultural society is not without its challenges. Language barriers, for example, can hinder communication and understanding among individuals. Miscommunication due to language differences can lead to misunderstandings or even conflicts. Furthermore, people may feel divided by their cultural identities, which can create a sense of "us versus them." Some argue that without efforts to bridge cultural differences, multiculturalism might unintentionally lead to social fragmentation (Modood, 2007).

To foster a successful multicultural society, it is essential to promote inclusive policies and encourage intercultural dialogue. Schools and workplaces can play a significant role by celebrating diversity and teaching cultural understanding. When people actively engage with different cultures, they are more likely to find common ground and develop mutual respect, which helps create a stronger, more unified community (Berry, 2011).

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

Theo hệ thống Vec-xai – Oa-sinh-tơn, các nước tư bản nào có nhiều quyền lợi?

Ví dụ nào sau đây không phải đặc điểm thích nghi ở sinh vật?

Công ty X chuyên sản xuất về bánh bao, trong quá trình tạo ra thành phẩm, nhà sản xuất đã chia các yếu tố như nhân bánh, vỏ bánh và hộp bánh cho các đơn vị sản xuất khác nhau. Trong trường hợp trên, nhà sản xuất đã thực hiện hoạt động gì của kinh tế?

Giới hạn \(L=\lim \frac{3 n-1}{n+2}\) bằng

Đường cong trong hình có thể là đồ thị của hàm số nào dưới đây?

The food price will change at the end of this month.

Đặc điểm chỉ có được do sự sắp xếp và tương tác của các bộ phận cấu thành nên hệ thống được gọi là

Khoai tây sinh sản sinh dưỡng bằng bộ phận nào?

Văn bản nào sau đây không phải là văn bản chính luận thời xưa?

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 20 to 29.

We are living through a boom in greenwashing - the strategic use of comforting environmental claims to disguise business-as-usual pollution. Picture a chief executive whose company emits millions of tonnes of CO2 Genuine decarbonisation would require bruising boardroom discussions, huge capital outlays, and a complete redesign of the firm's model. Far easier is to hire a creative agency to plaster products with labels such as "carbon-neutral" or "net-zero," calming critics, investors, and even eco-conscious children while emissions continue unsolved.

This tactic meets consumers at every tum. Airline websites promise guilt-free flights, petrol pumps boast zero- - Impact fuel, and even supermarket bacon is marketed as net-zero. [1] Advertising trickery is ancient, yet today's greenwashing - the practice of deliberately covering ongoing pollution in eco-friendly language - has flourished only recently. The expression surfaced in the 1980s amid oil spills and growing climate science, but the real explosion has come as public anxiety over global heating and biodiversity loss has intensified. Faced with mounting scrutiny, many boards prefer glossy PR to structural reform. Such corporate sleight of hand has become so pervasive that regulators in Europe and the United States are scrambling to tighten rules on environmental claims, yet enforcement still lags behind marketing creativity. [II] The fossil-fuel sector exemplifies the issue. After decades covertly sowing doubt about climate science, oil and gas giants have grasped that direct denial is reputationally toxic. They have therefore swapped their denial tactics for a "green" paint-sprayer, trumpeting token investments in renewables while expanding drilling.

Why does this matter? Greenwashing and climate denial share a core objective: to postpone the emission cuts urgently required to avert climate breakdown. [III] Whereas denial invites opposition, greenwashing lulls the public into believing problems are already solved. Under this collective illusion, pressure on high-emitting firms evaporates and the radical decisions needed to transform energy, transport, and food systems are delayed indefinitely. [IV] Greenwashing thus acts as a soothing lullaby, leading society toward ecological ruin with a tune of comforting half- truths. Exposing this deception is essential If clichés are to be replaced by real, measurable emission cuts.

(Adapted from https:/www.greenpeace.org.uk)

Which of the following is NOT stated as an example of greenwashed products or services?

Phương án nào dưới đây không thuộc quy luật kinh tế?

Tính giá trị m và n thoả mãn (m+4) % 5 == 0 và n*2//3=5?

Cây sinh trưởng, phát triển bình thường khi