Đề ôn thi Đề thi vào lớp 10 Trường Phổ thông Năng khiếu môn Tiếng Anh - Mã đề PTNK-164

Before the arrival of the digital camera, photography was a very different experience. People used cameras that required no article film to capture images. Each roll of film could only hold a limited number of pictures, and you couldn't see your photos immediately. Instead of instant results, you had to take the film to a special shop to be developed. This process was complex and (21) __________ a lot of time, making each photograph feel very precious.

The first digital camera was invented by an engineer at Kodak named Steven Sasson in 1975. However, it was not like the cameras we know today. It was large, weighed almost 4 kilograms, and recorded black and white images to a cassette tape. The resolution was very low, with only 0.01 megapixels. In an interview, the inventor later said that he wondered if people would ever want to view their photos on a television, which was the only way to see the images this camera produced.

For many years, this technology developed slowly because the components were very expensive. The digital sensor, which replaced film, was difficult to manufacture. If film cameras were still the only option today, photography (22) __________ much more expensive and less accessible for everyone. Over time, however, technology improved. The first digital cameras that used memory cards instead of tape were introduced in the late 1980s, marking a significant step forward.

(23) __________, cameras became smaller and cheaper, and the quality of the images got much better. During the 1990s and early 2000s, the number of pixels in sensors increased dramatically, leading to sharper and more detailed photos. It soon became clear that this new technology was here to stay. Many traditional camera companies struggled to (24) __________ with the rapid changes, as consumers quickly moved from buying film to buying digital cameras.

Today, the story has evolved again. While dedicated digital cameras still exist for professionals and hobbyists, most people use the powerful cameras built into their smartphones. This shift shows how quickly technology can change our daily habits. Most people have stopped using separate digital cameras, as their smartphones are powerful enough for daily photography. The digital camera was a revolutionary invention that paved the way for the instant, shareable world of images we live in now.

Smartwatches have become ubiquitous accessories. Beyond telling time and delivering notifications, these sophisticated gadgets are increasingly marketed as personal health companions. [I] Reflecting a global trend towards greater self-awareness, they empower individuals with a constant stream of biometric data. The question remains: can such a device truly transform us into healthier individuals?

In Vietnam, the appeal of smartwatches is clear. Major electronics retailers like FPT Shop and The Gioi Di Dong prominently display a wide array of models, from budget-friendly options to premium brands. They are no longer niche gadgets but popular, aspirational tech accessories, especially among the health-conscious and tech-savvy. [II] Extensive marketing highlights their potential to help users achieve fitness goals and maintain a balanced lifestyle, making them common among various age groups. Their widespread accessibility makes their actual health benefits a crucial topic.

The premise behind smartwatches contributing to better health is straightforward. By providing real-time data on activity levels, users can immediately see if they are meeting daily step goals or maintaining a healthy heart rate during exercise. [III] Sleep tracking can reveal patterns impacting daytime energy and mood. This constant feedback powerfully motivates users towards more activity or better sleep hygiene. For many, the visual representation of progress, or lack thereof, acts as a valuable nudge towards healthier choices.

However, owning a smartwatch is not a magic bullet for instant health. While the data it collects is abundant, understanding its true meaning is crucial. A high step count is good, but is your diet balanced? Are you getting enough quality sleep? [IV] For 14-15 year olds who might own these, it's vital to recognize numbers are just indicators. Genuine motivation to live a healthier lifestyle must come from within, not solely from the device. Over-reliance on metrics without interpretation can also lead to unhealthy obsessions or anxieties.

Ultimately, a smartwatch is a tool, not a complete solution. It excels at providing data and reminding us to be active, but it cannot force nutritious food choices, manage stress effectively, or build resilience. Its effectiveness hinges on the user's willingness to interpret information thoughtfully, integrating it into a broader, holistic approach to well-being. While a smartwatch can be a valuable companion on your health journey, the real power to become a healthier person still lies firmly in your own hands and the conscious decisions you make every day.