Đề ôn thi Đề thi vào lớp 10 Thái Nguyên môn Tiếng Anh - Mã đề TNG-72

Have you ever wondered where fabrics like nylon come from? Unlike cotton or wool, which are natural, nylon is a synthetic material made entirely (29) __________ chemicals. Scientists first developed it in the 1930s. Since then, (30) __________ other man-made textiles have been invented, but nylon remains one of the most popular. The (31) __________ reason for its popularity is its strength and low cost.

The creation of nylon is a fascinating chemical procedure. Scientists start with chemicals from petroleum and then heat them under high pressure. This causes small molecules to link together, forming long chains called polymers. (32) __________, a new, strong, and elastic material is born. The scientists who first invented nylon had to (33) __________ a completely new method to achieve this. It was a revolutionary breakthrough in material science.

Imagine a world without these strong, affordable materials. If synthetic fabrics didn't exist, the clothes we wear every day (34) __________ much more expensive and less durable. Nylon's invention truly changed the textile industry forever.

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.