Đề ôn thi Đề thi vào lớp 10 Hà Nội môn Tiếng Anh - Mã đề HN-21

(23) __________. This common struggle highlights a clear need among passengers. For this reason, designated 'quiet cars' on trains are not just a luxury, but an essential service. (24) __________

Have you ever wondered how your eyes see the world around you? It's a complex process, but it happens in an instant. Essentially, our eyes act like a camera. (25) __________ part of the eye, from the clear cornea at the front to the retina at the back, plays a specific and vital role.

First, light from an object enters the eye (26) __________ the pupil, which is the black circle in the center. The lens then focuses this light. This has a major (27) __________ on how clear the image is. The focused light creates an upside-down image on the retina. Amazingly, the millions of cells in the retina immediately (28) __________ this light into electrical signals. (29) __________, these signals are sent along the optic nerve to the brain.

If the brain didn't interpret these signals, the information (30) __________ be useless. The brain flips the image the right way up and tells us what we are looking at. It's a truly amazing collaboration!

Can you imagine waiting five minutes for a single song to download? For your parents, this was normal. Before today's lightning-fast internet, connections were slow and unreliable. Now, for teenagers in Vietnam and across the world, high-speed internet is essential for studying, gaming, and streaming videos. This massive change didn't happen overnight; it was the result of an incredible technological journey that transformed how we connect to the digital world.

In the past, most homes connected to the internet using dial-up or ADSL technology, which sent data through old copper telephone lines. This system was slow and had many limitations. For example, you couldn't use the house phone and the internet at the same time. As more people started using the internet for complex tasks, this copper-wire system quickly became obsolete and unable to meet the growing demand for faster speeds.

The solution was fiber optic technology. Instead of sending electrical signals through copper, fiber optic cables use thin strands of glass to transmit data as pulses of light. Because light travels so fast, this method is significantly quicker and more stable. Fiber optic technology is a superior way to deliver internet, as it can handle massive amounts of data without losing speed. This innovation is the primary reason you can watch high-definition movies without any buffering.

In Vietnam, this digital transformation has been remarkable. Companies like FPT Telecom and VNPT have worked hard to replace the old copper infrastructure with modern fiber optic networks, even in remote areas. This nationwide effort has provided millions of young Vietnamese people with the powerful tools they need to learn, create, and connect with the world, all made possible by tiny strands of glass carrying light.

In recent decades, the media landscape has dramatically shifted. Many large, national, and even global media corporations have bought smaller, local newspapers, (37) __________. While this brought access to more international news, it had an unintended negative consequence for small communities. These new corporate owners often prioritized national stories over local ones, (38) __________.

As a result, many areas have become 'news deserts'—places with very limited access to credible local news. When a town's only newspaper closes or stops reporting on local issues, (39) __________. This information gap makes it harder for people to stay engaged in local politics and community life, (40) __________.

A. leading to a significant reduction in reporters covering local events

B. ultimately weakening the democratic process at the grassroots level

C. aiming to create massive news networks that reach a wider audience

D. citizens lose a vital source of information about their own government and community leaders