Đề ôn thi Đề thi vào lớp 10 Hà Tĩnh môn Tiếng Anh - Mã đề HTI-160

Have you ever wondered how people lift very heavy things, like a piano or construction materials? One common tool is the pulley system, a simple machine (24) __________ consists of a wheel and a rope. For centuries, people (25) __________ pulleys to make difficult lifting jobs much easier. The basic principle is simple: by pulling down on one end of the rope, you can lift an object attached to the other end. This redirects the force, making it more convenient.

With just one pulley, you still have to (26) __________ the same amount of effort as the object’s weight. (27) __________, when you add a second pulley, the effort you need is cut in half. This principle of mechanical advantage is why complex pulley systems (28) __________ in cranes, elevators, and on large sailing ships. By understanding this simple machine, engineers can design amazing solutions to move incredible weights. It's a great example of how a simple (29) __________ can have a huge impact.

Have you ever been served coffee by a robot? This futuristic idea is becoming a reality in cafes around the world. In Vietnamese cities like Hanoi and Da Nang, some coffee shops have introduced robot waiters to attract customers, especially young people. While they are mostly seen as a fun gimmick right now, their presence raises an important question: are these machines just a cool novelty, or are they the future of the service industry?

From an operational perspective, robot waiters offer several clear benefits. They can work long hours without getting tired and can perform repetitive tasks with great accuracy. For example, a robot barista can make the exact same cup of coffee every single time, ensuring consistent quality. This efficiency can be very appealing to business owners who want to reduce errors and streamline their service. The movements of these robots are often very precise, which is perfect for delicate tasks.

However, the capabilities of today's service robots are still quite limited. They lack the warm, friendly interaction that a human waiter provides. They cannot handle unexpected problems, such as a customer with a special request or a messy spill. Furthermore, the initial cost of purchasing and maintaining these robots can be very high for small businesses. These factors explain why their use is not widespread and they often work alongside human staff.

In conclusion, while robot waiters are an exciting technological development, they currently function more as a marketing tool than a practical solution for most cafes. The main reason for this is their inability to replicate the human element of service. The question remains whether future advancements in artificial intelligence will allow these machines to overcome their current shortcomings and truly become a common sight in the restaurants we visit every day.