Đề ôn thi Đề thi vào lớp 10 Trường THPT Chuyên KHXH môn Tiếng Anh - Mã đề KHXH-100

Have you ever wondered how ice can fall from the sky during a storm, even on a warm day? This phenomenon is called hail, and it forms inside very powerful thunderstorms. The process begins with (35) __________ strong upward current of air, known as an updraft. This updraft is the engine that drives the creation of hailstones, pushing water droplets high into the very cold parts of the storm cloud.

The journey of a hailstone starts with a tiny ice pellet. As this pellet is carried upwards by the updraft, it enters a region of the cloud where the air temperature is below freezing. Here, supercooled water droplets, which are still liquid despite the cold, instantly (36) __________ to it upon contact. This adds the first layer of ice. The small hailstone then begins to fall due to gravity.

However, its journey is not over. If the updraft is strong enough, it will push the hailstone back up into the cold region of the cloud. This cycle of rising and falling is repeated many times. Each time the hailstone travels up, a new layer of ice is added, making it bigger and heavier. The updraft must be powerful enough to (37) __________ the growing weight of the hailstone.

Eventually, the hailstone becomes so heavy that the updraft can no longer support it. (38) __________, it finally falls out of the cloud and towards the ground. A meteorologist once explained, ' (39) __________ this cycle multiple times is what allows hailstones to become so large.' He added that in powerful storms, the hailstones (40) __________ reach the size of golf balls or even larger. If an updraft weren't so incredibly strong, hailstones (41) __________ so big.

The formation of a very large hailstone requires a perfect balance of temperature, moisture, and powerful updrafts. It’s not something that happens in every thunderstorm. In fact, the creation of a giant hailstone is a (42) __________ event, requiring a unique and powerful set of atmospheric conditions to come together at just the right moment.

In bustling Vietnamese cities like Hanoi and Ho Chi Minh City, the sight of delivery drivers in their signature green or orange jackets is now a common part of the urban landscape. Food delivery apps such as GrabFood and ShopeeFood have woven themselves into the fabric of daily life, especially for the younger generation. With just a few taps on a smartphone, a hot meal or a refreshing bubble tea can arrive at your doorstep. This convenience is undeniably attractive, but it also raises important questions about how these services are shaping our eating habits, lifestyles, and even our local communities for better or for worse.

The primary advantage of these platforms is the sheer convenience and variety they offer. In the past, your food choices were limited to what was within walking distance or what you could cook yourself. Now, a world of culinary options is available. You can order a traditional bowl of Phở for lunch and an Italian pizza for dinner without ever leaving your home. This access to a diverse range of restaurants provides an unprecedented level of choice for consumers, catering to every craving and dietary preference. For busy students juggling schoolwork and extracurricular activities, this can be a massive time-saver.

However, this convenience comes with potential downsides that are worth considering. Health experts worry that the ease of ordering may lead to a more sedentary lifestyle, as people walk less to get their food. Furthermore, many of the most popular and heavily promoted items on these apps are often fast food or processed meals, which can negatively impact long-term health if consumed too frequently. Besides health, there is also the environmental cost. Each delivery generates a significant amount of single-use plastic packaging, from containers to cutlery. While they offer incredible convenience, their environmental footprint is a growing concern.

Beyond health and the environment, there's a financial aspect to consider. While an individual meal might seem affordable, the costs can accumulate quickly. Delivery fees, service charges, and the temptation to order more often than you would otherwise can put a strain on a teenager's budget. When you compare the total cost of a delivered meal to that of a home-cooked one or a simple dish from a local street vendor, the difference can be substantial. Managing one's finances responsibly means being aware of these hidden or additional costs.

Ultimately, food delivery apps are powerful tools whose impact depends on how we use them. They offer a remarkable level of convenience and choice that can genuinely improve our daily lives. The challenge lies in using these services mindfully—balancing the ease of a quick delivery with the benefits of a home-cooked meal, a walk to a local eatery, and an awareness of our health, budget, and environmental responsibilities. The future of eating well in the digital age is not about abandoning these apps, but about finding a healthy, sustainable balance.