Đề ôn thi Đề thi vào lớp 10 Trường THPT Chuyên KHTN môn Tiếng Anh - Mã đề KHTN-06

Using a GPS navigation app for a car trip is straightforward and very helpful. First, you open the application and type your destination into the search bar. (23) __________. (24) __________

The human spine, also known as the vertebral column, is a remarkable structure that plays a crucial role in our body. It is (25) __________ 33 individual bones called vertebrae. These bones are stacked on top of one another, separated by soft, gel-like discs. These discs act like cushions, absorbing shock and allowing for movement.

The spine has two main jobs. It provides the main support for our body, allowing us to stand upright, and it also protects the delicate spinal cord. (26) __________ vertebra has a hole in the middle, and when stacked, they form a channel for the spinal cord to run through. This design is incredibly effective. (27) __________, without this protection, even a small injury could be very serious. Poor posture can negatively (28) __________ the health of your spine over time. If the spine were just one solid bone, movement (29) __________ completely impossible. The spine is responsible (30) __________ providing both strength and flexibility, a truly amazing piece of natural engineering.

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.

The concept of a long summer vacation is not as old as many believe. Contrary to popular belief, it wasn't created to let children help on family farms. (37) __________. Wealthy families would leave hot cities for cooler country homes, and schools had to adapt to declining attendance. (38) __________.

While this seemed like a practical solution, it introduced an unexpected problem for student learning. (39) __________. Studies show that students can lose up to two months of grade-level equivalency in math skills during this time. (40) __________. As a result, many educators promote summer reading programs to keep students' minds active.

A. This academic decline over the summer is now widely known as the 'summer slide'

B. Instead, the modern summer break was primarily an urban invention from the 19th century

C. This loss is cumulative and can have long-term effects on a student's academic journey

D. This led reformers to implement a standardized school calendar