Đề ôn thi Đề thi vào lớp 10 Trường THPT Chuyên KHXH môn Tiếng Anh - Mã đề KHXH-78

The Arctic is a land of ice and snow, and the animals that live there need special adaptations to survive. The arctic fox is a master of survival in this harsh environment. Its most amazing feature is its (35) __________, which changes color with the seasons. This transformation is not just beautiful; it is essential for the fox's existence, helping it hunt and hide effectively throughout the year.

During the long, cold winter, the arctic fox grows a very thick, pure white coat. This dense layer of fur acts like a warm blanket, providing excellent insulation against freezing temperatures. More importantly, the white fur provides excellent camouflage; (36) __________, it is very difficult for predators like polar bears or eagles to spot the fox against the white snow. This allows the fox to hunt its prey, like lemmings, without being easily seen.

When summer arrives and the snow melts, the arctic fox's appearance changes dramatically. The landscape transforms into a mix of brown earth, rocks, and green plants. In response, the fox sheds its thick white fur and grows (37) __________ thinner, brownish-grey coat. This new color scheme helps the fox to continue its life of stealth, matching the summer tundra perfectly.

This change is not a choice but an automatic biological process triggered by photoperiod, which is the amount of sunlight in a day. If an arctic fox were to keep its summer coat in winter, it (38) __________ much harder to survive. This natural process helps the fox to (39) __________ with its environment throughout the year. A biologist once remarked that if we studied these animals more, we (40) __________ even more about survival. For the arctic fox, changing its coat is not just for looks; it’s a matter of (41) __________.

In conclusion, the arctic fox’s ability to change the color of its coat is one of nature’s most brilliant examples of adaptation. It is a critical survival tool that demonstrates how animals evolve to meet the challenges of their environment. This incredible ability allows the fox to continue (42) __________ in one of the world's most challenging habitats.

Every day, teenagers across Vietnam and the world scroll through endless feeds on Instagram and TikTok. They see images of seemingly perfect people: social media influencers and K-Pop idols with flawless skin, impossibly slim waists, and perfectly toned bodies. While these visuals can be inspiring to some, they often set a very specific and demanding beauty standard. This constant exposure creates immense pressure on young people to look a certain way, leading many to feel dissatisfied with their own appearance.

The core of the problem lies in the fact that this 'perfection' is often an illusion. Many of the images we see are carefully staged, professionally lit, and heavily edited with filters and software. This promotes a beauty standard that is completely unattainable for the average person. Body image, which is how you see and feel about your own body, can be significantly damaged when you constantly compare yourself to these unrealistic portrayals. When teenagers see these images, they might forget that what they are looking at isn't real, leading to feelings of inadequacy.

The consequences of this constant comparison can be serious and detrimental to mental well-being. Studies have shown a strong link between high social media use and increased feelings of anxiety, depression, and low self-esteem among adolescents. The relentless pursuit of a 'perfect' body can also lead to unhealthy behaviors, such as extreme dieting or excessive exercise. This focus on appearance above all else distracts from what is truly important: overall health and happiness.

So, what can be done? The first step is to develop media literacy. This means learning to critically view online content and reminding yourself that social media is a 'highlight reel,' not a reflection of everyday reality. It is also helpful to curate your social media feed. Unfollow accounts that make you feel bad about yourself and follow those that promote body positivity and diverse body types. Shift your focus from what your body looks like to what it can do. Celebrate its strength, its ability to learn new skills, and its role in carrying you through life.

Ultimately, building a positive body image is a journey, not a destination. It involves practicing self-compassion and recognizing that your worth as a person has nothing to do with how you look or how many likes your photo gets. True confidence comes from accepting yourself, flaws and all, and focusing on being the healthiest and happiest version of yourself, both online and off.