Cơ năng của một vật dao động điều hòa

Carol loves cooking so much that she plans to _______ her present job as a secretary to open a restaurant.

Xác định đâu là cách thể hiện cách phân loại tài nguyên thiên nhiên ?

Đâu là ý đúng: Khổ giấy nào sau đây có kích thước nhỏ nhất?

Phương trình ${{2.4}^{x}}-{{7.2}^{x}}+3=0$ có tất cả các nghiệm thực là

Hình chiếu trục đo có mấy thông số cơ bản?

He tried his best. He won the biggest prize.

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.

In an era of increasing global awareness, debates around sustainable practices such as fair trade, organic farming, and recycling are gaining prominence. Farmers in developing countries are among the most vulnerable people, dependent on world commodity markets, middlemen, and unpredictable weather. 

(I)Fair trade arrangements aim to support cooperative groups by guaranteeing prices above the world market rate and additional bonuses. (II) However, critics argue that fair trade may not lift a country out of poverty. (III)They claim that most of the money generated from sales goes to wealthy countries that promote these products. (IV)In fact, only about 5% of the sale price of a fair-trade chocolate bar (retailing for £1.73 in the UK) reaches the poor country.

Another significant trend is the rise of organic food, marketed as being free of chemicals, which appeals to consumers concerned about the dangers of chemicals in food. These chemicals are suspected of causing various health problems, including cancer and developmental issues in children. Despite these concerns, British farmers have not converted to organic farming in large enough numbers to meet the demand. As a result, supermarkets often import organic vegetables from distant countries, contributing to higher greenhouse gas emissions due to transportation. Environmentalists are now urging consumers to buy locally grown vegetables, even if they are pesticide-treated, suggesting a good wash can minimize the risk.

In recent years, a shift has occurred in how we handle waste. Once content to bury it in landfills or dump it at sea, we are now encouraged to recycle and treat waste as a resource. This shift has led to more widespread kerbside collections for various materials like paper, plastic, and metal. However, recycling has unintended consequences. Most of the UK's recyclables are sent to China or India, which incurs additional environmental costs from transportation. In these countries, workers often sort waste under dangerous conditions. Sometimes, materials that are sorted at home still end up in landfills because the market for them fluctuates.

While efforts to promote sustainability are commendable, they require constant evaluation to ensure they truly benefit people and the environment, rather than creating new inequalities or environmental harm.

Which of the following best summarizes the main point of the passage?

Nhân vật chính trong Vang bóng một thời là:

Một vật khối lượng 100 g rơi tự do được quãng đường 10 cm. Lấy g =10 m/s². Công của trọng lực tác dụng lên vật trên quãng đường nói trên là

Điểm \(A(1;2)\) thuộc miền nghiệm của hệ bất phương trình nào?

Để bảo quản kim một số kim loại mạnh, người ta thường ngâm chìm các kim loại đó vào trong dầu hoả. Hãy cho biết kim loại nào sau đây không bảo quản được bằng cách cho ngâm vào dầu hoả?

Trong chân không, ánh sáng có bước sóng nhỏ nhất trong số các ánh sáng đơn sắc: đỏ, vàng, lam, tím là