Đề ôn thi Đề thi vào lớp 10 Hà Tĩnh môn Tiếng Anh - Mã đề HTI-145

The great ocean currents are like massive rivers that flow across the globe, playing a vital (24) __________ in regulating Earth's climate. These powerful movements of water are not random; they are driven by several key forces. One of the main forces is the wind. For example, surface currents are primarily pushed by strong winds, (25) __________ create large circular patterns called gyres.

Another important factor is water (26) __________. Cold, salty water is denser and sinks, while warmer, less salty water rises. (27) __________, when water near the poles gets very cold and freezes, the salt is left behind, making the remaining water much denser. This sinking water pulls more surface water from the equator, creating a continuous global 'conveyor belt'. This entire system, which moves heat around the world, has influenced weather patterns that people (28) __________ on for thousands of years. It (29) __________ that even small changes to these currents could have a huge impact on our climate.

From Ho Chi Minh City to Hanoi, the bubble tea trend is impossible to ignore. This Taiwanese drink, known locally as 'trà sữa trân châu', has become a cultural phenomenon, especially among young Vietnamese. With countless shops like Gong Cha and Phuc Long on every corner, it's a popular choice for socializing after school. But while it is a delicious treat, it’s important to understand what’s inside the cup.

The secret to bubble tea's success lies in its unique combination of ingredients. The base is typically a sweetened black or green tea mixed with milk. What makes it special are the chewy tapioca pearls, also known as 'boba'. This combination of a sweet, creamy drink and a fun-to-eat texture is highly appealing to many teenagers. Furthermore, customers can customize their drinks with different toppings and sugar levels, making each cup a personal creation.

However, there is a growing concern about the health impacts of drinking bubble tea too frequently. A standard cup can contain an enormous amount of sugar, sometimes more than a can of soda. This high sugar content is a primary cause of weight gain and can contribute to other long-term health issues if consumed regularly. The tapioca pearls themselves, while tasty, are mainly starch and add significant calories to the drink without providing much nutritional value.

Does this mean you should stop drinking bubble tea forever? Not necessarily. The key is moderation and making smarter choices. When you order, you can ask for a lower sugar level, such as 30% or 50%. Choosing a smaller size or sharing a large cup with a friend are also effective strategies. By being mindful of these options, you can still enjoy your favorite drink as an occasional treat without compromising your health.