Đề ôn thi Đề thi vào lớp 10 Trường THPT Chuyên KHTN môn Tiếng Anh - Mã đề KHTN-138

(23) __________ The journey back was not immediate; it required a structured and resilient approach. (24) __________

Our blood is a fascinating fluid that (25) __________ a vital role in keeping us healthy. It is composed of different elements, but two of the most important are red and white blood cells.

Red blood cells, (26) __________ are also known as erythrocytes, are the most common type of blood cell. Their main job is to transport oxygen from our lungs to all other parts of the body. They contain a special protein called hemoglobin, which binds to oxygen. This process is essential for providing energy to our muscles and organs, allowing them to function (27) __________.

(28) __________, white blood cells, or leukocytes, are the soldiers of our immune system. When harmful bacteria or viruses enter the body, a signal (29) __________ and more white blood cells are produced to fight the invaders. For example, if you cut your finger yesterday, white blood cells immediately (30) __________ to the area to prevent infection.

In Vietnam, it's hard to imagine a kitchen without a packet of Hảo Hảo or Omachi instant noodles. They are a global phenomenon, but their popularity in Vietnam is among the highest in the world. For students, these noodles are more than just food; they are a cheap, fast, and easy solution for a quick lunch between classes or a late-night study snack. This accessibility has made them a staple in modern Vietnamese life.

The primary appeal of instant noodles is their convenience. In less than five minutes, a student can have a hot meal ready. This is incredibly helpful for those with busy schedules filled with school, homework, and extracurricular activities. Instead of spending time cooking a complex meal, a convenient packet of noodles allows a student to eat quickly and get back to their tasks. This time-saving aspect is what makes them so popular among young people.

However, health experts often raise concerns about the nutritional value of instant noodles. While they can certainly fill your stomach, they offer very few essential nutrients like fiber, vitamins, or minerals. Instead, they are typically high in sodium (salt), unhealthy fats, and preservatives. Relying on them too often can contribute to an unbalanced diet, as eating them provides only a temporary feeling of fullness without delivering the nutrients a growing body needs.

So, should students stop eating instant noodles completely? Not necessarily. The key is moderation and making smart additions. While a packet of noodles alone isn't a balanced meal, it can be a base for one. Adding fresh vegetables, a boiled egg, or some lean meat can significantly boost its nutritional profile. By doing this, students can still enjoy their favorite quick meal occasionally without completely sacrificing their health.

In recent years, the use of alcohol-based hand sanitizers has become widespread as a convenient way to kill germs. These products are promoted as a quick and effective alternative to handwashing, especially when soap and water are not available. However, this reliance on sanitizers has led to some unintended consequences. (37) __________. This is because the high concentration of alcohol disrupts the skin's protective barrier.

Furthermore, there is a growing concern about microbial resistance. While sanitizers are effective against many germs, they do not eliminate all types of microbes. (38) __________. This phenomenon is similar to the problems seen with the overuse of antibiotics. Additionally, sanitizers are less effective on visibly dirty or greasy hands. (39) __________. Ultimately, while hand sanitizers have their place, a balanced approach is essential for public health. (40) __________.

A. Some experts worry that overusing them could contribute to the development of 'superbugs,' which are bacteria resistant to antimicrobial agents

B. It is crucial to understand both their benefits and their limitations to use them wisely

C. Frequent use can strip the skin of its natural oils, leading to dryness, irritation, and even eczema

D. For this reason, traditional handwashing with soap and water remains the gold standard for hygiene in most situations