Đề ôn thi Đề thi vào lớp 10 Trường THPT Chuyên KHTN môn Tiếng Anh - Mã đề KHTN-82

(23) __________. Together, these individual offerings create an impressive and diverse feast for everyone. This cooperative approach is the essence of a community potluck. (24) __________

An avalanche is a rapid flow of snow down a slope, like a mountain. For one to happen, several conditions must be met. The (25) __________ important factor is an unstable snowpack. This usually occurs when a layer of fresh, heavy snow falls on top of a weaker, older layer. The new snow adds significant pressure.

When the slope is steep enough, gravity begins (26) __________ the snow downwards. The bond between the snow layers can be very delicate. Sometimes, even a small vibration from a skier or a loud noise can (27) __________ a chain reaction, causing a massive slab of snow to break loose and slide. (28) __________ creates an incredibly dangerous situation, as the moving snow can reach speeds of over 130 km/h. Skiers in these areas must be extremely careful. Any (29) __________ movement can be catastrophic. People say you must (30) __________ when faced with such danger, but it is often very difficult.

What exactly is a 'carbon footprint'? It is the total amount of greenhouse gases, particularly carbon dioxide, that are generated by our individual actions. Everything from the food we eat to the way we travel contributes to this total. For example, the electricity used to power our homes and the fuel burned by the motorbike we take to school both create emissions that affect our planet’s climate. Understanding this concept is the first step towards making a positive change.

As a developing nation, Vietnam has experienced rapid economic growth. This progress, while beneficial, has also led to an increase in the country's average carbon footprint. To address this, the Vietnamese government is implementing strategies to promote a low-carbon economy. The national plan aims to balance development with environmental protection, ensuring that as the country prospers, its environmental impact, or footprint, does not grow uncontrollably. The goal is to manage it sustainably for the future.

For teenagers, this global issue has very personal connections. The choice between riding a motorbike or a bicycle to school has a direct effect on the environment. Even seemingly minor actions, like how long you charge your smartphone or the type of snacks you buy, add up. It shows that your daily habits, both big and small, have a real and measurable consequence on the world. Your choices truly matter more than you might think.

The good news is that reducing your carbon footprint isn't overly complicated. You can make a difference by taking simple steps. For instance, you could use public transport more often, remember to turn off lights when you leave a room, or choose locally grown food to reduce transport-related emissions. When many people make these small changes together, the collective impact can be enormous and help protect our environment for future generations.

For decades, the 'eight hours of sleep' rule has been a universal health guideline. However, modern sleep science challenges this one-size-fits-all approach, (37) __________. Factors like age, genetics, and lifestyle all play a crucial role. (38) __________.

Instead of strictly following this rule, experts recommend a personalized strategy. For instance, some people function better with a biphasic pattern, (39) __________. This contrasts with the monophasic pattern that the eight-hour rule assumes. (40) __________, rather than sticking to an arbitrary number.

A. The most important lesson is to listen to your body's signals of tiredness and alertness

B. suggesting that our individual sleep needs can vary significantly

C. Forcing a rigid eight-hour schedule on everyone might therefore be counterproductive

D. which involves a shorter nighttime sleep supplemented by a daytime nap