Đề ôn thi Đề thi vào lớp 10 Trường THPT Chuyên KHXH môn Tiếng Anh - Mã đề KHXH-113

Have you ever heard of a river in the sky? High up in (35) __________ atmosphere, at the altitudes where commercial jets fly, there are fast-flowing, narrow currents of air known as jet streams. These are not like the gentle breezes we feel on the ground; they are powerful winds that circle the globe. These high-altitude winds are one of the most significant phenomena influencing our planet's weather patterns and even our travel.

The main jet streams are located about 9 to 16 kilometers above the Earth's surface. Their formation is complex, but they essentially exist at the boundary between cold polar air and warmer air from the tropics. A key function of the jet stream is that it (36) __________ these large cold and warm air masses. This separation is rarely a straight line; the jet stream bends and curves, creating waves in the atmosphere that can have major effects on weather below.

The position and strength of the jet stream directly influence the weather we experience. When the jet stream moves south, it can bring cold air with it, leading to colder temperatures. This makes (37) __________ its behavior crucial for accurate weather forecasting. Consequently, meteorologists use advanced tools to monitor the jet stream's path, as its shifts can signal the development of storms or periods of calm, clear weather.

For aviation, the jet stream is a very important factor. Pilots flying from west to east often try to (38) __________ of the jet stream, as this 'tailwind' can significantly reduce flight time and save fuel. If a pilot on a transatlantic flight (39) __________ the jet stream, the journey would have been much longer and more expensive. Conversely, flights going from east to west will try to avoid it to prevent a strong headwind.

In conclusion, the jet stream is a fundamental component of our planet's atmospheric system. A famous meteorologist once commented that its influence on weather (40) __________ underestimated by the public. To simply call it 'wind' doesn't (41) __________; it is a dynamic and powerful force. Understanding this 'river of air' is essential, not just for scientific curiosity, but for practical applications that (42) __________ our daily lives, from weather prediction to air travel.

Imagine you’ve spent months planning the perfect summer trip. You’ve booked your flights, reserved your hotels, and packed your bags. But what happens when things don't go according to plan? Despite our best efforts, travel can be incredibly unpredictable. A delayed flight can cause you to miss a connecting one, your luggage might decide to take a different vacation than you, or you could wake up with a sudden illness in a foreign country. These situations can turn a dream holiday into a stressful nightmare, testing your patience and problem-solving skills.

Among the most common travel crises is losing a critical document, especially your passport. Without it, you are essentially stuck. A passport is not just a booklet; it's the essential key to crossing borders and proving your identity. Losing it means urgent trips to your country's embassy or consulate, piles of paperwork, and the potential for significant delays. Other common issues include flight cancellations due to weather or technical problems, and medical emergencies, which can be both frightening and extremely expensive if you're not prepared.

Fortunately, modern travelers have a powerful safety net: travel insurance. While it can’t prevent a problem from happening, it provides a crucial financial buffer. Comprehensive policies, like those offered by Vietnamese companies such as Bao Viet, can cover the costs of medical treatment, cancelled flights, or even the expenses incurred while replacing a lost passport. This protection allows travelers to handle emergencies without facing a devastating financial burden. Having a good insurance policy is as important as packing your suitcase.

Beyond the financial aspect, navigating these challenges offers a valuable life lesson in resilience. When you successfully handle a difficult situation in an unfamiliar place—whether it's finding the embassy after losing your passport or communicating with a doctor in a different language—you build real-world problem-solving skills. This experience fosters a sense of independence and confidence. You learn that you are more capable and resourceful than you might have believed, turning a negative event into an opportunity for personal growth.

In conclusion, while no one wants to think about what could go wrong on a trip, being prepared is the key to a successful journey. Understanding potential problems and having a plan, including securing travel insurance, can make a huge difference. Travel mishaps are stressful, but they also serve as a real-life classroom, teaching us how to be more adaptable, confident, and resilient individuals. The lessons learned from overcoming these obstacles are often as valuable as the trip itself.