Đề ôn thi Đề thi vào lớp 10 Trường THPT Chuyên KHTN môn Tiếng Anh - Mã đề KHTN-24

(23) __________ . These factors combine to make this simple activity a powerful tool for maintaining health. It's a convenient and effective way to stay active. (24) __________

Have you ever looked outside and found the world covered in a low, white cloud? People often use the words 'fog' and 'mist' to describe this, but they aren’t exactly the same. The main difference is simply a (25) __________ of visibility. According to weather experts, fog is just a cloud that is (26) __________ to the ground than other clouds. To be officially called fog, visibility must drop below one kilometer.

Mist is less dense and allows you (27) __________ farther than one kilometer. (28) __________ means that while both can make driving difficult, fog is significantly more dangerous for drivers. That's why being extremely (29) __________ is crucial. When you are on the road in thick fog, you must reduce your speed and increase the distance between your vehicle and the one in front. It’s better to be safe than (30) __________.

Rivers are the lifelines of our planet, flowing through landscapes and cities, supporting diverse ecosystems and providing essential water for millions. In our busy daily lives, we often see these rivers but may not think about their health. They are a critical part of our environment, but many face a silent crisis of pollution, turning them from sources of life into symbols of neglect.

The primary threats to river health come from human activities. Industrial factories often discharge chemical waste directly into the water. In rural areas, fertilizers and pesticides from farms can wash into rivers during heavy rain. This process, known as agricultural runoff, can seriously contaminate water sources. Furthermore, plastic bottles, bags, and other non-biodegradable trash frequently end up in rivers, harming aquatic animals and degrading water quality for everyone.

In Vietnam, this problem is very real. The To Lich River in Hanoi, for example, is a well-known case of severe urban water pollution. For years, it has struggled with waste and a dark, unpleasant appearance, making it a visible symbol of environmental challenges. Despite numerous cleanup projects and public promises, restoring the river to its former health has proven to be an incredibly difficult and complex task, showing just how long-term the damage can be.

Understanding the state of our local rivers is the first step towards protecting them. The health of these waterways is a direct reflection of the health of our community and our environment. As young citizens, being aware of the sources of pollution and supporting efforts to reduce waste can make a significant difference. The future of our rivers, and our cities, depends on the choices we make today.

The traditional hobby club, whether for book lovers or chess players, thrived on personal interaction. Members would gather in a shared physical space, (37) __________. These informal chats built strong friendships and a true sense of community. The sudden shift to online platforms, however, completely changed this dynamic.

While virtual meetings made it possible for clubs to continue, they often felt more structured and less personal. (38) __________. Without the casual moments of arriving early or staying late, some of the social magic was lost. (39) __________. On the other hand, the online format also brought unexpected benefits, (40) __________. This accessibility has led to more diverse and larger club memberships, creating a new kind of global community.

A. This new format sometimes made it difficult for natural, unplanned conversations to occur

B. where spontaneous conversations before and after the main activity were as important as the hobby itself

C. making it easier for people from different cities or even countries to join in

D. Many members missed the easy-going atmosphere of face-to-face gatherings