Đề ôn thi Đề thi vào lớp 10 Hà Nội môn Tiếng Anh - Mã đề HN-30

(23) __________. This contrast highlights a modern dilemma. While a large online following can feel validating, it rarely provides the genuine support found in true friendship. (24) __________

Have you ever wondered how a simple grain of sand becomes a bottle? The process is fascinating. First, raw materials, including sand, soda ash, and limestone, are mixed. In fact, (25) __________ other chemicals are often added to give the glass specific properties like color. The factory must then (26) __________ the temperature in the furnace to about 1700°C. (27) __________, this intense heat causes the mixture to melt into a glowing, orange liquid called molten glass. A machine places a 'gob' of this hot liquid (28) __________ a mold and blows air into it, forcing it to take the bottle's shape. After this, the new bottles must (29) __________ slowly in a special oven called an annealer. If they cooled too quickly, they (30) __________ very easily. This journey from sand to bottle is a remarkable example of industrial science.

In sprawling urban centers, often called "concrete jungles," green spaces are scarce. This separation from nature affects our food supply, as most produce travels hundreds of kilometers to reach city markets. However, a global movement is changing this. Urban agriculture, particularly rooftop gardening, is transforming unused city spaces into productive green oases, offering a fresh solution to an old problem.

The benefits of rooftop farming are numerous. Firstly, it provides city residents with access to incredibly fresh, nutritious produce, often harvested just moments before it's eaten. This local production dramatically cuts down on the environmental costs associated with long-distance food transportation. Furthermore, these innovative gardens can become community hubs, bringing neighbors together to share in the work and the harvest, strengthening social bonds.

This trend is gaining popularity in Vietnam. In bustling cities like Da Nang and Ho Chi Minh City, community projects and private companies are helping people set up their own gardens. They move away from conventional farming methods that require large fields and instead use smart systems like hydroponics on rooftops. These local initiatives show that producing food in the city is not just a dream but a practical reality.

While starting a rooftop garden may present challenges, such as initial setup costs and the need for some technical knowledge, the movement continues to grow. For teenagers, it offers a powerful way to reconnect with their food source and understand the environment. It proves that even in a crowded city, a small patch of green on a roof can make a big difference for our plates and our planet.

Electric scooters, often promoted as a green solution to urban traffic, have flooded city streets. While they offer a convenient way to travel short distances, their rapid rise has brought unexpected problems. A major concern is safety, (37) __________. These incidents often happen because people ride without helmets or on sidewalks where they conflict with walkers.

Another significant issue is how scooters are left after use, (38) __________. This 'dockless' model, while convenient for users, creates a real headache for city officials. Finally, the environmental benefits are not as clear-cut as they seem, (39) __________. Therefore, cities must develop better regulations (40) __________.

A. especially when they replace walking or cycling rather than car trips

B. to ensure these vehicles are a true benefit to the community

C. as many riders and pedestrians suffer injuries in accidents involving them

D. creating hazards for people with disabilities and disrupting public order