3 . As environmental concerns continue to increase, many people are left wondering how they can balance the need to travel with the need to protect the planet. One particular dilemma that has received significant attention is air travel.

Air travel is known to be one of the most carbon-intensive forms of travel. According to a report by the European Environment Agency, aviation is responsible for around 3% of the EU’s greenhouse gas emissions, and that number is expected to grow in the coming years. In addition, aircraft contribute to other types of air pollution, such as particulate matter and nitrogen oxides.

For environmentalists who advocate for reducing our carbon footprint, this brings up a difficult question: should we avoid flying altogether?

On one hand, it’s easy to see why environmentalists would want to keep away from air travel. By doing so, they could dramatically reduce their carbon footprint and set an example for others. Additionally, some argue that air travel perpetuates (使永久) a culture of over-consumption, which is contradictory lo environmental values.

However, there are also arguments in favor of air travel: For one, air travel enables people to experience different cultures, build relationships, and expand their knowledge in ways that might not be possible otherwise. It can also facilitate business trades and contribute to economic growth. Moreover, some experts believe that technological advancements could make air travel more sustainable in the future. For example, some airlines are experimenting with biofuels and electric planes, which could dramatically reduce the emissions associated with air travel.

So what’s the answer? Ultimately, it’s up to each individual to decide whether the benefits of air travel outweigh the environmental costs. However, there are steps that everyone can take to reduce their impact. For example, travellers can choose to fly less frequently, opt for direct flights, and offset (抵消) their emissions through programs like carbon offsetting. In the end, the key is to remain aware of the environmental impact of our choices and to make informed decisions based on our own values and priorities.

People need transportation to move from one place to another. As time went by, transportation methods improved. Especially after the invention of airplanes, they made travel more convenient and    1     (easy).

The airplane    2     (invent) by Orville and Wilbur Wright in 1903.     3     first airplane, Wright Flyer I, flew 36.5 meters in 12 seconds. After that, the two brothers kept     4     (improve) their airplanes. They    5     (fly) in public in France in 1908, and started taking passengers with them. Ever since, many other people made great efforts to improve and develop airplanes. Thanks to their efforts, airplane technology developed extremely fast.

Today, airplanes have many different    6     (apply). People can use airplanes to travel to other countries, send urgent mails and help people     7     danger. They use airplanes to send water, food, medicine, etc. to cities     8     need help. However, airplanes are not only used in positive ways,     9     they are also used to fight wars.

Many things     10     (change) since the invention of the airplane. Airplanes have made travel or transport faster. Airplanes have really changed our lives.