Đề ôn thi Đề thi vào lớp 10 Hà Tĩnh môn Tiếng Anh - Mã đề HTI-32

Have you ever wondered how products from across the world arrive in your local stores? A huge part of the answer lies with massive container ships. These are some of the (24) __________ machines ever built by humans, some stretching over 400 meters long. They (25) __________ a vital role in the global economy by moving goods between continents. Loading thousands of containers is a highly organized task. Port operators avoid (26) __________ any space to maximize capacity. The journey across the ocean can take weeks, and the crew must work (27) __________ to ensure the cargo arrives safely. A single ship can carry the equivalent of thousands of trucks full of goods. (28) __________ demonstrates their incredible efficiency and low environmental impact per item. The (29) __________ of goods by sea is a complex but fascinating process that connects us all in the global marketplace.

Originally from South America, the Golden Apple Snail (GAS) was introduced to Asia, including Vietnam, in the 1980s. People initially thought it could be a valuable food source for farmers. However, this seemingly good idea quickly became a significant environmental and agricultural challenge. Snails that escaped or were released into the wild found the warm, wet conditions of rice paddies to be a perfect new home, leading to severe consequences.

The primary issue with the GAS is its diet. These snails have a strong preference for young rice seedlings, which are essential for a successful harvest. A large population can destroy a rice field in a short time, threatening farmers' livelihoods. Furthermore, these creatures reproduce rapidly, laying bright pink egg clusters on plants above water. Each cluster contains hundreds of eggs, allowing their numbers to explode and spread quickly.

The impact of this invasive species is twofold. Economically, it causes major losses for the rice industry, a key part of Vietnam's economy. Environmentally, the snail disrupts the natural balance of the paddy ecosystem. Because the GAS is so harmful to crops, government bodies like the Plant Protection Department work on methods to manage its population. This includes encouraging farmers to collect the snails and their eggs manually.

The story of the Golden Apple Snail is a powerful lesson about invasive species. It shows how introducing a non-native animal, even with good intentions, can create a huge and costly problem. This case reminds us of the delicate balance in our local ecosystems and why we must protect them. It highlights how one environmental change can affect the food we eat and the people who grow it.