Đề ôn thi Đề thi vào lớp 10 Trường Phổ thông Năng khiếu môn Tiếng Anh - Mã đề PTNK-125

Ethanol is (21) __________ type of biofuel, which is a fuel derived from renewable biological sources. It is often blended with gasoline to power vehicles. It is mainly produced from agricultural crops like corn and sugarcane. These plants are rich in sugars or starches, which are the key ingredients for its production.

The process of making ethanol starts with harvesting these crops. First, the plant material is crushed. For crops like corn, the starches must be converted into simple sugars. This is done through a process called hydrolysis, so that they can be fermented more easily.

The next stage is fermentation. The guide explained that the process (22) __________ about 48 hours to complete. During this step, microorganisms, usually yeast, are added to the sugary mixture. The yeast helps to break down the sugars into ethanol and carbon dioxide. This reaction is what creates the alcohol.

After fermentation, the liquid contains ethanol, water, and solid residues. This mixture is then heated in a process called distillation. Since ethanol has a lower boiling point than water, it evaporates first. The vapor is collected and cooled back into a liquid, which is now much more concentrated. This purified ethanol is ready for use as a fuel.

For countries with large agricultural sectors, producing ethanol is like (23) __________ with one stone, as it supports farmers and promotes cleaner energy. If we (24) __________ more in biofuel technology, we could significantly reduce our carbon footprint in the future.

Telemedicine, the practice of consulting doctors remotely through video calls or apps, has rapidly transformed global healthcare. Once a niche service, it surged into prominence during the COVID-19 pandemic, becoming a vital tool for maintaining medical access while minimizing physical contact. [I] Its growing adoption across countries prompts an important question: is consulting a doctor through an app truly a good idea for everyday health concerns?

For teenagers and their families, the appeal of telemedicine is clear. Imagine waking up with a minor health issue. Instead of a long wait at a crowded clinic or navigating traffic, a quick video call via an app can connect you to a doctor in minutes. [II] This convenience saves time and reduces stress, making it an excellent option for minor issues not requiring a physical exam, like common colds, mild allergies, or prescription refills. This ease also encourages seeking advice earlier, potentially preventing small problems from escalating.

Vietnam has enthusiastically embraced this digital shift, with several homegrown telemedicine platforms emerging. Companies like Doctor Anywhere and Med247 have established systems connecting patients in urban and rural areas with qualified medical professionals. These platforms are crucial in expanding healthcare access beyond traditional clinic walls, offering consultations for general health, pediatrics, and more. [III] This local resonance highlights how telemedicine isn't just a global trend but a practical solution addressing specific healthcare needs within Vietnam.

However, while telemedicine offers numerous advantages, it's not a universal solution. Patients must understand its limitations. Conditions requiring a physical examination, like severe injuries, breathing difficulties, or persistent unexplained pain, are unsuitable for remote diagnosis. Emergency situations always demand immediate in-person attention. Without the ability to touch, listen, or perform diagnostic tests, a doctor's assessment of complex conditions is significantly constrained, potentially leading to misdiagnoses or delayed treatment for serious problems. [IV]

Ultimately, consulting a doctor through an app can be a valuable and efficient tool for managing certain health needs. It offers unparalleled convenience and expands access to medical expertise, especially where clinics are scarce. For minor ailments and follow-up questions, it’s a modern convenience for a digitally-savvy generation. Nevertheless, it's crucial to understand its boundaries. Knowing when an app consultation is appropriate versus when an in-person visit is essential ensures you receive the most effective and safest care possible.