Đề ôn thi Đề thi vào lớp 10 Trường THPT Chuyên KHTN môn Tiếng Anh - Mã đề KHTN-57

I decided to bake my own bread for the first time, thinking it would be simple. My hands were soon covered in a sticky, unmanageable mess of flour and water. (23) __________. (24) __________

Plywood is an engineered wood product made from thin layers of wood veneer. To begin, logs are heated and then peeled into long sheets. If you (25) __________ a log peel like this, it would look like a giant paper roll unwinding. After peeling, the veneers are dried to reduce moisture content. This is a crucial step to prevent the final product from warping. (26) __________ sheet of veneer is then inspected for defects.

Next, the veneers are glued together. A special adhesive is applied (27) __________ the surface of each layer. The layers are stacked so the grain direction of each is perpendicular to the adjacent one. This gives plywood its strength. (28) __________, the stack of glued veneers is placed in a hot press, which uses heat and pressure to bond the layers permanently. Many people don't realize the engineering that (29) __________ creating such a common material. It’s a process that has a significant (30) __________ on the construction industry.

In Vietnam, like many places, teenagers love their smartphones for everything from studying to chatting on Zalo or watching TikTok. However, this constant screen time has a hidden danger: a condition called 'text neck'. This modern health issue is becoming increasingly common among young people, caused by the posture we adopt when looking down at our devices for hours every day.

What exactly happens when you get text neck? Normally, your head weighs about 5 kilograms. But when you bend your neck forward 60 degrees to look at your phone, the pressure on your spine can increase to 27 kilograms. This is a significant amount of extra weight, like carrying a young child on your neck, which your spine is not designed to support for long periods.

The effects of text neck can be divided into two groups. The immediate symptoms are often temporary and include a stiff neck, pain in the shoulders and back, and frequent headaches. If ignored, however, these can lead to more serious, long-term problems such as permanent damage to the spine, reduced lung capacity because of poor posture, and even nerve issues.

The good news is that preventing text neck is simple. You can make a huge difference by holding your phone at eye level instead of looking down. It’s also important to take regular breaks every 20-30 minutes to look up and stretch. Simple exercises for your neck and shoulders can also help release tension and keep your spine healthy.

Synthetic fabrics like polyester and nylon have become incredibly popular for their durability and low cost. However, they pose a significant environmental threat. Every time we wash these clothes, they shed tiny fibers called microplastics. (37) __________, eventually flowing into our rivers and oceans.

Once in the aquatic environment, these plastics act like sponges, (38) __________. Marine animals often mistake these fibers for food, (39) __________. This widespread issue requires urgent attention, (40) __________.

A. absorbing harmful pollutants from the surrounding water

B. as the long-term effects on ecosystems and human health are still not fully understood

C. leading to health problems and contamination of the food chain

D. These microscopic particles are too small to be filtered out by wastewater treatment plants