Đề ôn thi Đề thi vào lớp 10 Trường THPT Chuyên KHTN môn Tiếng Anh - Mã đề KHTN-23

My grandfather's old wristwatch is my most prized possession. It's not valuable in terms of money, but its sentimental worth is immeasurable. (23) __________. (24) __________

Bluetooth is a wireless technology that allows devices like smartphones, headphones, and speakers to communicate with each other over short distances. It helps us to (25) __________ information such as photos, music, and documents without using any cables. The technology creates a wireless personal area network, or 'piconet'. This provides a secure and reliable (26) __________ between two or more devices, making our digital lives much more convenient.

Before devices can exchange data, they need (27) __________ with each other. One device, like your phone, scans for other nearby Bluetooth devices. When it finds your headphones, for example, it sends a request to connect, and the headphones accept. (28) __________ creates a trusted link between them, so they can automatically connect in the future. Using Bluetooth is one of the (29) __________ ways to link gadgets, as it doesn't require an internet connection and uses very little power.

For many people, connecting their phone to their car or headphones using Bluetooth has become (30) __________. It is a simple, effective technology that has truly changed how we interact with our electronics.

Have you ever felt the rush of grabbing a great deal during a flash sale on Shopee or Tiki? That feeling of excitement as the clock ticks down is no accident. These massive online shopping events, like the famous 11/11 sale, are carefully designed. They combine powerful technology with smart psychology to create an environment where clicking 'buy now' feels like the only option.

The primary psychological tool is creating urgency. E-commerce sites use countdown timers and 'only 5 items left!' messages to make you feel that you must act immediately. This tactic taps into our 'Fear Of Missing Out' (FOMO), a powerful feeling that makes us want what others have, especially if it's scarce. These methods don't just suggest you should buy; they often compel you to make a quick decision without overthinking.

Behind the scenes, a different kind of magic is at work. To handle millions of users at once, platforms like Tiki use scalable servers that can expand their capacity instantly. They also employ sophisticated algorithms that analyze your browsing history to show you personalized deals you're more likely to be interested in. This technology ensures the website doesn't crash and that the offers you see are as tempting as possible.

In conclusion, a flash sale is a perfect storm of human psychology and advanced engineering. By understanding how these platforms create urgency and use technology to present the perfect offer, you can become a more aware consumer. The next time you see a deal that seems too good to be true, you'll know exactly what's working to get your attention.

"Ghost nets" are fishing nets that have been lost or abandoned in the ocean. They are a serious threat to marine ecosystems because they continue to function long after they are lost, (37) __________. This process, often called "ghost fishing," can continue for decades.

Made from durable synthetic materials like nylon, these nets do not biodegrade easily, (38) __________. As they drift, they can also damage sensitive habitats like coral reefs. Moreover, tiny plastic particles break off from the nets over time, (39) __________. Addressing the issue of ghost nets requires international cooperation to clean up existing nets and prevent future abandonment, (40) __________.

A. contributing to the growing problem of microplastic pollution

B. thereby protecting our oceans for future generations

C. trapping fish, sea turtles, dolphins, and even whales

D. persisting in the marine environment for hundreds of years