Đề ôn thi Đề thi vào lớp 10 Trường THPT Chuyên KHTN môn Tiếng Anh - Mã đề KHTN-120

The strength of a society isn't just built on grand laws or major economic policies. It is often forged in the small, everyday interactions between people. (23) __________. (24) __________

Mangrove forests, found along tropical coastlines, are one of the planet's most important ecosystems. They (25) __________ a vital role in protecting coastal communities from storms and erosion. Their dense, tangled root systems act as a natural wall, slowing down powerful waves. Furthermore, they are among the (26) __________ productive ecosystems on Earth. Often called "nurseries of the sea," they provide shelter for many species of fish and crabs. Many young marine animals enjoy (27) __________ in this safe environment before they venture into the open ocean.

The benefits are extensive. Mangrove roots trap sediments and pollutants, leading to clearer, cleaner water. (28) __________ helps to protect nearby coral reefs and seagrass beds from being covered in silt. The (29) __________ of these forests for both nature and communities is huge, as they also store massive amounts of carbon. We must protect them (30) __________, because they are priceless natural treasures.

In Vietnam, from popular chains like Highlands Coffee to local milk tea shops, free Wi-Fi is everywhere. For many teenagers, connecting is the first thing they do to save mobile data while chatting or browsing social media. This convenience is very attractive, but it comes with a hidden danger. This simple daily habit could put your personal information at risk without you even realizing it.

The main problem is that most public Wi-Fi networks are unsecured. This means the connection is not encrypted, making your online activities vulnerable to hackers on the same network. A skilled individual can position themselves between you and the connection point. This technique allows them to intercept everything you send and receive, from the websites you visit to the messages you send.

The consequences of such an attack are not trivial. Hackers can steal login details for your social media accounts like TikTok and Instagram, or access your private photos and messages. In more serious cases, if you use the network for any financial transactions, they could capture banking details. Losing control of these accounts can lead to significant personal and financial problems.

So, what can you do? It's best to avoid public Wi-Fi for sensitive activities like online banking. For general browsing, consider using a Virtual Private Network (VPN), which encrypts your connection and protects your data from being seen. Ultimately, being mindful and taking small precautions is key. The convenience of free Wi-Fi should never be more important than your digital security.

"Clean coal" technology sounds like an ideal solution to our energy problems, but it's far more complex and costly than its name suggests. The primary goal is to reduce harmful emissions from burning coal, particularly carbon dioxide (CO2). The main method involves carbon capture and storage (CCS), (37) __________. However, this process is extremely expensive and energy-intensive, often reducing a power plant's efficiency.

Furthermore, CCS doesn't address all the environmental issues associated with coal. The mining process itself still devastates landscapes and pollutes water sources. Storing the captured carbon also presents a significant challenge, (38) __________. Critics argue that investing in "clean coal" technology diverts resources away from developing truly renewable energy sources like solar and wind, (39) __________. Therefore, while it aims to make coal less dirty, it isn't a truly "clean" solution, (40) __________.

A. delaying the necessary transition to a genuinely sustainable energy future

B. leaving many environmental problems unsolved

C. which traps CO2 before it enters the atmosphere

D. as there are risks of it leaking back into the atmosphere over time