Đề ôn thi Đề thi vào lớp 10 Trường Phổ thông Năng khiếu môn Tiếng Anh - Mã đề PTNK-49

Your body houses many important organs, but one of the largest and busiest is the liver. Located in the upper right part of your abdomen, this incredible organ performs over 500 vital functions. It is not only big but also incredibly complex, playing a crucial role in keeping you healthy every single day. Without it, your body would not be able to process food or clean your blood effectively.

One of the liver's primary jobs is acting as the body's main filter. All the blood leaving the stomach and intestines passes through the liver. The liver is responsible for (21) __________ this blood, removing toxins, and clearing out old or damaged blood cells. This process ensures that the blood circulating throughout your body is clean and safe. It's a continuous cleaning job that happens 24/7.

The liver also helps with digestion. It does this by producing a special digestive fluid called bile. This yellow-green liquid is essential for breaking down fats from the food you eat. After the liver makes bile, it is stored in a small organ called the gallbladder. The gallbladder then releases the bile into the small intestine (22) __________ aid the digestion of fatty meals.

As well as cleaning and producing, (23) __________ liver is also a storage powerhouse. It stores important vitamins, minerals, and a type of sugar called glucose. When your body needs energy, the liver breaks down the stored glucose and releases it into the bloodstream. This function helps to keep your energy levels stable between meals.

Because the liver is so important, taking care of it is essential. If it (24) __________ working properly, our health would be at serious risk. A healthy lifestyle helps the liver perform at its best, so you can feel as fit as a fiddle. A doctor once told my father that he needed to eat a balanced diet to support his liver function. This advice is valuable for everyone.

The world is buzzing about 5G, the fifth generation of wireless technology, promising to revolutionize how we connect. More than just faster internet, 5G boasts ultra-high speeds and incredibly low latency. [I] For you, holding your smartphone, the big question remains: will 5G truly change the way you use your device every single day, or is it just another technical advancement?

Globally, the rollout of 5G networks is already paving the way for innovations that were once just futuristic concepts. [II] Imagine seamless augmented reality (AR) experiences streamed directly to your phone, allowing digital objects to blend with your real-world view without lag. Consider cloud gaming, where complex, high-fidelity games run on remote servers and stream to your device with virtually no noticeable delay, making console-level gaming portable and accessible. These aren't minor tweaks; they represent entirely new paradigms of interaction and entertainment.

This technological leap isn't confined to distant lands; it's rapidly approaching our doorstep. [III] Major Vietnamese mobile carriers like Viettel and Vinaphone are actively investing in and expanding their 5G trial networks. Cities like Hanoi and Ho Chi Minh City are becoming hubs for this development, with infrastructure being laid down for a wider, nationwide launch. This local commitment means the global promises of 5G are becoming a tangible reality for users in Vietnam, making its impact highly relevant to our daily digital lives.

For teenagers, particularly those around 14-15 years old, 5G will directly and significantly impact your daily phone usage. Think about buffering videos or lagging online games. With 5G, those become relics of the past. You'll experience lightning-fast video downloads and incredibly smooth online gaming, giving you a competitive edge. Moreover, 5G will unlock new applications and services not feasible with 4G, opening up possibilities for interactive learning, immersive entertainment, and dynamic social experiences. [IV]

So, while 5G might seem like just another numerical upgrade, its underlying capabilities promise a profound shift in our digital landscape. From enabling next-generation entertainment and innovative applications to fundamentally changing how quickly and smoothly you interact with your device, 5G is poised to redefine the smartphone experience. As these networks expand and become more accessible, prepare for a future where your phone isn't just faster, but also capable of delivering experiences you can barely imagine today. The era of seamless mobile interaction is dawning.