Question

Travel in the Future

These days, if you want to travel from New York to Beijing, the flight takes about 16 hours. You also have to wait at the airport, and sometimes you have to transfer (换乘) onto a different airplane. If you add all of that extra time, the trip takes at least 20 hours. But in the future, the trip from New York to Beijing might only take two hours.

Right now, a company is developing something called ET3, which stands for "evacuated tube (真空管) transport technology". Here's how it works. A tube goes all the way from New York to Beijing. The tube is only a few meters wide. Capsules (舱) move through the tube. Six people can sit in one capsule. The capsules use electricity instead of oil. For international travel, the capsules can travel at about 6,500 kilometers per hour. That's much faster than airplanes—most modern airplanes usually only fly at about 800 kilometers per hour.

So how is this possible? How can these capsules travel so fast? The answer is that there is no air inside the tube. When airplanes fly, they have to move through air. The air slows the airplanes down. Because there isn't any air in the ET3 tubes, the capsules are able to move at a very high speed. Also, the capsules are quite light. Each only weighs 183 kilograms.

There are other advantages to ET3. Because it uses electricity, it's quite clean. Also, it's a lot quieter than airplanes and cars. Finally, ET3 tubes and capsules don't require very much building materials.

Of course, ET3 doesn't come into use yet. The technology is still being developed. Developers still have to solve a lot of problems. The biggest problem is that right now ET3 would be far too expensive. In order to make ET3 cheaper, we will need much better technology.

It's exciting to think of how ET3 will change the travel in the future. Who knows? Maybe someday you'll be able to have lunch in New York and dinner in Beijing.

1.According to the passage, an ET3 looks more like a ________.

A.spaceship B.bus C.plane D.subway train

2.ET3 travels at the very high speed because _________.

A.it is powered by electricity and oil B.it is much lighter than an airplane

C.it moves through a tube without air D.it is made up of fewer capsules

3.From the passage, the writer expects that ________.

A.modern technology will be used in airplanes B.ET3 will take the place of airplanes some day

C.less money will be spent for passengers on ET3 D.ET3 will change the travel in the future greatly

Answer

1.D

2.C

3.D

【解析】

文章介绍了原本从纽约到北京旅行至少需要20个小时。但将来，从纽约到北京的旅行可能只需要两个小时。文中主要介绍了这个新型的旅行工具ET3以及它的工作原理和现在存在的问题。

1.推理判断题。根据文中A tube goes all the way from New York to Beijing. The tube is only a few meters wide. Capsules (舱) move through the tube.一根管子从纽约一直到北京。 管子只有几米宽。 舱通过管子移动。可以推断出ET3看起来像地铁一样，故选D。

2.细节理解题。根据文中So how is this possible? How can these capsules travel so fast? The answer is that there is no air inside the tube.怎么可能？ 这些胶囊怎么能走得这么快？ 答案是管子里面没有空气。可知是因为管子里没有空气，故选C。

3.细节理解题。根据文中It’s exciting to think of how ET3 will change the travel in the future. Who knows? Maybe someday you’ll be able to have lunch in New York and dinner in Beijing.想到ET3将如何改变未来的旅行是令人兴奋的。谁知道呢？也许有一天你可以在纽约吃午餐，在北京吃晚餐。可知作者期望将来ET3将改变未来的旅行，故选D。