Đề ôn thi Đề thi vào lớp 10 Trường THPT Chuyên KHTN môn Tiếng Anh - Mã đề KHTN-68

(23) __________ . Even the shared tool shed, with its neatly hung shovels and watering cans, seems to radiate a sense of calm purpose. (24) __________

Saturn's rings are one of the most amazing sights in our solar system. For a long time, scientists were not sure what they were (25) __________ of. Today, we know they are not solid but are instead composed of countless small pieces. The (26) __________ component is water ice, but they also contain rocky material and dust. These particles range in size from tiny dust specks to huge pieces as large as a house. (27) __________, the rings are incredibly thin, only about 10 meters thick in most places.

If a spacecraft (28) __________ through the densest parts of the rings, it would likely be destroyed by the millions of icy particles. Scientists study the rings from a safe distance, using probes like Cassini. (29) __________ of the data collected by Cassini has helped us understand the rings' complex structure. We now know that there are actually many individual rings, each orbiting the planet (30) __________ its own speed.

In a tropical country like Vietnam, the sun is a constant companion. We see people everywhere wearing ‘áo chống nắng’ and hats to shield themselves from its intense rays. While sunshine can boost our mood and provide Vitamin D, many people are unaware of the long-term damage it can cause. It's crucial for teenagers to understand that protecting their skin today is an investment in their future health.

The sun emits two main types of ultraviolet (UV) rays that harm our skin: UVA and UVB. UVA rays are the primary cause of premature aging, leading to wrinkles and dark spots as they penetrate deep into the skin. UVB rays are mainly responsible for sunburn. Over time, exposure to both types of rays can significantly increase the risk of developing serious conditions like skin cancer.

A primary defense is using sunscreen with a high Sun Protection Factor (SPF). For daily activities, SPF 30 is good, but for sports or beach days, SPF 50 is better. However, a single application is not enough. You must use a sufficient amount to cover all exposed skin and reapply it. Dermatologists recommend reapplying every two hours, as sweating and water can reduce its effectiveness. They also advise seeking shade during peak sun hours.

Developing good sun protection habits is a vital life skill. This isn’t just for trips to the beach, but for everyday activities like walking to school or playing football. By being smart about sun exposure now, you make a responsible choice that keeps your skin healthy for years.

Volunteering is often seen as a noble act, but it holds a hidden paradox. Many dedicated individuals pour their hearts into community work, driven by a deep desire to help. Initially, these volunteers are the most active members, (37) __________. This heavy workload, combined with the emotional investment, slowly drains their energy.

Eventually, they start feeling detached and ineffective, (38) __________. What once brought them joy now feels like an overwhelming burden. This cycle is particularly dangerous because it affects the most passionate volunteers, (39) __________. To avoid this, it's crucial for organizations to support their volunteers, (40) __________.

A. leading them to question the impact of their efforts

B. ensuring they maintain a healthy balance and don't overcommit

C. leaving a significant gap in the community they served

D. taking on more responsibilities than anyone else