Đề ôn thi Đề thi vào lớp 10 Thái Nguyên môn Tiếng Anh - Mã đề TNG-96

When we think of architectural wonders, the dome often comes to mind. It's an elegant solution for covering a vast area without the need for internal columns, creating an open, impressive space. The genius of a dome lies in its ability to redirect weight. Instead of pushing all the force straight down, it spreads the load outwards along its curved surface. (29) __________ makes it possible to build enormous interiors that feel light and airy.

The Pantheon in Rome is perhaps the (30) __________ example of this principle. Built almost 2,000 years ago, its concrete dome is still the world's largest unreinforced one. Its (31) __________ construction has inspired countless architects throughout history. Roman engineers managed to achieve this by using lighter materials towards the top of the dome, a clever technique that reduced stress. They also avoided (32) __________ heavy support pillars inside, which was revolutionary. The structure has truly managed to (33) __________ the test of time. For large, open-plan designs, a dome is often considered (34) __________ the competition.

When you think about using water, you probably imagine drinking a glass of water or taking a shower. This is direct water use. But what about the hidden water in the things you buy? The 'water footprint' is a measurement of the total amount of hidden or 'virtual' water used to produce something. From the cotton in your t-shirt to the metal in your smartphone, almost everything has a water footprint, often much larger than you would expect.

The water footprint of food is particularly surprising. For instance, it takes about 140 liters of water to grow the coffee beans for just one cup of coffee. A single bar of chocolate requires around 1,700 liters. Some foods, like beef, have a massive water footprint; it takes over 15,000 liters of water to produce just one kilogram of beef! This hidden water accounts for most of the water we 'consume' each day.

This concept is highly relevant to Vietnam. As a major agricultural exporter of products like rice and coffee, which have large water footprints, the nation's water resources are under significant pressure. This makes sustainable water management a crucial issue for the country's future. Understanding the difference is key: products like beef and coffee have very high water footprints, while products like vegetables generally have a much lower one.

So, what can we do? The first step is awareness. By understanding our water footprint, we can start making more informed and sustainable choices. Choosing foods with a lower water footprint, or simply being mindful of the 'water cost' of our meals, can collectively make a big difference. It’s not about stopping consumption, but about consuming more thoughtfully to help protect our planet's precious water.