Đề ôn thi Đề thi vào lớp 10 Trường THPT Chuyên KHTN môn Tiếng Anh - Mã đề KHTN-92

(23) __________ . After twenty minutes of frantic searching, we heard a familiar bark. It was coming from the Henderson's yard next door, where we found our dog, Buddy, happily playing with their sprinkler. (24) __________

Deep beneath the Earth's surface, there is extremely hot, liquid rock called magma. This molten material is less dense than the solid rock surrounding it, which causes it to slowly (25) __________ towards the crust. As it ascends, it often collects in a large underground pool known as a magma chamber. This mixture consists (26) __________ not only molten rock but also a large amount of dissolved gases.

Inside this chamber, immense pressure (27) __________ over time, much like shaking a can of soda. As more magma and gas accumulate, the pressure intensifies. (28) __________, the force becomes too great for the overlying rock to withstand. This is when an eruption begins, violently forcing magma, ash, and gas out through a vent in the Earth's surface. If such a powerful eruption were to happen near a large city, it (29) __________ catastrophic damage, affecting thousands of people and the environment. Therefore, scientists monitor (30) __________ active volcanoes closely.

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.

For 15-year-old Alex, the word "budget" sounded like a restriction, something that would limit his fun. He was constantly running out of his weekly allowance long before the weekend arrived. At his parents' suggestion, he reluctantly agreed to track his spending for one month. (37) __________.

The simple act of listing his expenses—snacks, video games, and bus fares—was an eye-opener. (38) __________. This clarity wasn't limiting; it was empowering. Suddenly, he wasn't just a passive recipient of an allowance; he was a manager of his own small finances. (39) __________.

This small change led to a surprising outcome. By the end of the month, not only did he have money left over, but he also felt a powerful new sense of control. (40) __________. The budget hadn't been a chain; it had been a key, unlocking a door to genuine independence.

A. For the first time, he could see exactly where his money was disappearing

B. This newfound skill was more valuable than any item he could have bought

C. Initially, he just wrote down every purchase without much thought

D. He started making conscious choices, like packing a lunch instead of buying one at school