Đề ôn thi Đề thi vào lớp 10 Hà Nội môn Tiếng Anh - Mã đề HN-155

My grandfather's old wristwatch is my most prized possession. It's not valuable in terms of money, but its sentimental worth is immeasurable. (23) __________. (24) __________

Wildfires are a powerful force of nature. While many people think humans are always responsible, a significant number of fires are actually caused by natural events. The most common natural cause is lightning. During a thunderstorm, a bolt of lightning can (25) __________ the ground with incredible energy. If this happens during a dry period, the conditions are perfect for a fire to start. For a fire to begin, three things are needed: heat, oxygen, and fuel. Lightning provides the intense heat.

Moreover, if the lightning hits dry grass, dead leaves, or old wood, this material acts as fuel. These materials can easily (26) __________ fire. The fire (27) __________ by the lightning strike can then spread quickly, especially if there are strong winds. This is a process (28) __________ has shaped landscapes for millions of years. (29) __________, some ecosystems even depend on these natural fires to stay healthy. However, they are also a major threat, and it's important to understand them. Last year alone, thousands of acres of forest (30) __________ destroyed by fires started in this way.

In many urban areas, like Ho Chi Minh City, canals that should be beautiful waterways are often choked with plastic bags, foam boxes, and other trash. For a long time, many citizens believed that cleaning up this pollution was solely the government's responsibility. However, a new wave of environmentalism is rising, led by ordinary people who are tired of waiting for change and have decided to take direct action themselves.

A prominent example of this movement is the group 'Sài Gòn Xanh' (Green Saigon). Armed with nets, rakes, and a strong sense of purpose, these young volunteers wade into heavily polluted canals to pull out garbage. Their dedication is clear as they document their hard work through photos and videos on social media. This online presence does more than just show their progress; it acts as a powerful call to action, inspiring countless others across the country to join or form their own local cleanup groups.

The impact of these groups is immediately visible. A canal that was once black with waste can look remarkably cleaner after just one session. This raises public awareness about the severity of pollution. However, some critics argue that these clean-ups offer only a temporary solution. Without systemic changes to waste management and laws to prevent littering, the trash often returns quickly, meaning the volunteers' hard work must be repeated constantly.

Despite these challenges, the story of groups like 'Sài Gòn Xanh' carries an important message. It demonstrates that you do not need to be a powerful official or a famous scientist to make a positive impact on your environment. The collective effort of dedicated individuals proves that small, consistent actions can create visible change and, more importantly, foster a stronger sense of community responsibility for the planet.

Ecotourism promises a win-win situation: travelers get to experience pristine natural environments while their money helps support conservation. However, this popular travel trend has a hidden dark side, often called a "Catch-22." As more people flock to fragile ecosystems, their very presence can cause unintended damage, (37) __________.

For instance, the constant stream of tourists in places like the Galapagos Islands puts immense pressure on local resources and habitats. (38) __________. To address this, many believe that stricter regulations are urgently needed.

(39) __________. Without careful management, the very places we love and want to protect might be loved to death, (40) __________.

A. These rules could limit the number of visitors allowed in sensitive areas

B. creating a tragic outcome for both nature and future generations

C. leading to soil erosion, water pollution, and disruption of wildlife

D. While the goal is to protect these unique environments, the industry can ironically become the source of their destruction