Đề ôn thi Đề thi vào lớp 10 Trường THPT Chuyên KHTN môn Tiếng Anh - Mã đề KHTN-176

(23) __________ Beyond the environmental and economic advantages, the daily act of sharing a ride cultivates a unique social environment. This shift from individual isolation to collective movement has profound effects on both personal well-being and community cohesion. (24) __________

Wi-Fi is a technology that, (25) __________, has become a basic need in our daily lives. It allows electronic devices like smartphones and laptops to exchange data wirelessly using radio waves. The process begins with a router, which receives an internet connection via a cable. The router then converts this connection into radio signals and broadcasts them into the surrounding area.

Your device has a built-in wireless adapter that enables it (26) __________ these signals. When you want to visit a website, your device sends a request to the router, which forwards it to the internet. The router then receives the data back and sends it to your device. (27) __________ is why the connection is a two-way street. The quality of this connection can vary; newer standards are often (28) __________ and more reliable than older ones. To get a stable (29) __________, you should be relatively close to your router. Therefore, it is important to (30) __________ a strong signal for the best experience.

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.

When people think about "green" energy, they usually imagine solar panels or wind turbines. Nuclear power, with its history of accidents like Chernobyl and Fukushima, often seems like the opposite of an environmentally friendly option. However, a growing number of scientists and environmentalists are making a surprising argument in its favor.

The primary reason is its incredibly low carbon footprint. Unlike fossil fuels, nuclear reactors do not burn anything, (37) __________. This is a crucial advantage in the fight against climate change. Furthermore, nuclear power plants provide a consistent and reliable source of energy. (38) __________. This stability is essential for powering modern cities and industries, something that intermittent renewables cannot guarantee alone.

Of course, safety and the disposal of radioactive waste remain significant challenges. (39) __________. Nevertheless, for those who prioritize decarbonization above all else, nuclear energy presents a compelling, if complex, solution, (40) __________.

A. These issues require strict regulations and ongoing technological innovation to manage effectively

B. meaning they release virtually no greenhouse gases during operation

C. offering a powerful tool to complement renewables in a clean energy future

D. They can operate 24/7, regardless of whether the sun is shining or the wind is blowing