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

Everyone (35) __________ that we yawn when we feel tired or bored. We often see it as a simple sign of sleepiness. However, scientists are discovering the real reason is more complex. While tiredness can trigger a yawn, it's not the main cause. Yawning is a vital bodily process that helps regulate our most important organ.

The leading theory suggests we yawn to cool down our brains. When the brain becomes too (36) __________, it doesn't function as efficiently. A yawn acts like the body's natural air-conditioning system. This process is crucial (37) __________ maintaining optimal brain temperature and performance. If our brain overheats, our mental alertness can suffer.

The primary (38) __________ of a yawn is to increase blood flow to the brain. When you yawn, you stretch your jaw muscles. This action sends more blood to your head. (39) __________, the deep breath taken during a yawn brings cooler air into the body, which then cools the blood before it goes to the brain.

But why is yawning contagious? (40) __________ research suggests this is related to empathy. We yawn when we see others do it because we are subconsciously connecting with them. People (41) __________ are more empathetic tend to 'catch' yawns more easily. This behavior plays a crucial (42) __________ in our social interactions.

So, the next time you yawn, remember it might not be because you are bored. Your brain is likely just trying to cool down to help you focus. Yawning is a fascinating and essential function, showing there's often a surprising scientific reason behind our common behaviors.

Have you ever scrolled through your social media feed and felt that everyone somehow looks the same? From the way they pose to the style of their clothes, a certain 'perfect' image seems to be everywhere. This isn't just a coincidence. It's the result of powerful global trends that shape our ideas of beauty, putting immense pressure on teenagers to conform, often before they’ve had a chance to figure out who they are and what they truly like.

For decades, global media, including Hollywood films and international fashion magazines, has promoted a very narrow set of beauty standards. These ideals, often based on Western features, were presented as the universal definition of attractiveness. Today, the internet and social media have accelerated this process, but they have also diversified the sources of influence. While Western standards are still present, other cultures have become incredibly influential. The most dominant cultural waves now spread instantly across the globe through platforms like TikTok and Instagram, creating new, but often equally restrictive, beauty templates.

In Vietnam, the influence of the 'Hallyu' or Korean Wave is undeniable. K-pop idols and stars from Korean dramas have become major style icons for Vietnamese youth. Trends like 'glass skin'—a desire for a perfectly clear, luminous, and dewy complexion—and the V-line jaw have become highly sought-after beauty goals. Popular Korean cosmetic brands, such as Innisfree and Laneige, have massive storefronts in Vietnamese cities and market their products heavily. These brands don't just sell products; they sell an aspirational lifestyle and a specific look that is constantly reinforced by popular media, making it a powerful force in the local beauty scene.

The consequences of this constant exposure can be significant for teenagers. The pressure to achieve these specific looks can lead to feelings of anxiety and low self-esteem if they feel they don't measure up. There is also a financial burden, as keeping up with the latest trends in skincare and makeup can be expensive. This environment encourages constant comparison with filtered, professionally curated images of celebrities and influencers, which is an unrealistic and often disheartening benchmark for anyone, especially for young people who are in the sensitive process of forming their own identity.

So, what's the solution? It starts with recognizing that these beauty standards are not universal truths but are commercially driven trends. It is important to think critically about the media you consume and whose interests it serves. Embracing individuality and celebrating diverse forms of beauty is a powerful antidote. True beauty isn't about having the trendiest look or the most flawless skin; it's about confidence, kindness, and being comfortable and happy with the unique person you are.