공통영어2 비상 홍민표 4과 변형문제

The need to explore new frontiers like the Arctic and the American West may ____ been sparked by curiosity, but a major reason was to discover new resources.

Without new resources and technology, the Industrial Revolution of the 19th century would not have led to the rise of new industries and the growth ____ cities.

In the late 20th century, the Information Technology Revolution connected the world and transformed ____

Now, it seems that space ____ the latest frontier for entrepreneurs to explore.

Finding new resources and exploring the unique environment are ____ opportunities for those who dare to take up the challenge.

The solar ____ is composed of many rocks floating in space.

The large ones are called planets, and the smaller ones are called ____

Research has shown that asteroids contain valuable resources like gold and rare earth ____

For example, one asteroid, 16 Psyche, is reported to consist ____ of gold and other precious metals, whose value is equal to billions of dollars per person on Earth.

From a space explorers’ perspective, however, the most ____ resources from asteroids are neither valuable precious metals nor rare mineral deposits.

That valuable resource could actually be water, and it ____ to have been overlooked because it doesn’t seem as exciting as gold.

Water is expensive to transport into space ____ to its weight and volume.

Having a space station with sufficient water supplies in orbit around Earth would make space explorations ____ easier.

No one knows for sure what asteroid mining ____ look like, but it seems that robotic mining is most likely.

Robots will be sent to dig for target materials and send them back towards ____

____ will be programmed to explore the surface and identify materials, and be equipped for tasks such as drilling, collecting, and transporting.

They ____ work independently or be controlled remotely from Earth.

Unfortunately, these types of robots have yet to be developed since the technology ____ still young.

As technology continues to develop, better methods for obtaining materials will ____ emerge.

Being on ____ International Space Station (ISS) is a unique experience.

Astronauts live and work in microgravity, floating around ____ of walking.

Researchers get to see Earth from a completely new perspective, and they get to work on important scientific research in conditions that ____ different from Earth’s.

Many manufacturers are interested in manufacturing in space because the quality of a lot of products ____ on Earth is influenced by temperature, pressure, radiation, and even the effects of gravity.

____ good conditions for certain types of manufacturing on Earth requires the use of a lot of energy and resources, but those conditions occur naturally in space.

Drugs, beauty and ____ products, and advanced materials are all potential candidates to be tested and produced in space.

For example, without the ____ of gravity, products that require a uniform quality like cosmetics would be easier to mix.

Other materials like 3D printed skin or muscle benefit ____ low pressure and gravity too.

Although the sun’s radiation can be unhealthy for our skin, getting away from the protective effects of ____ atmosphere could also benefit the testing of products.

____ example, fabrics and skin creams could be tested for their ability to protect against solar radiation.

Also, semiconductors and ____ communication cables could be produced with higher purity and fewer faults.

Space technology has advanced greatly, and it seems that the cost of running a space program and improving it has ____ substantially since ambitious entrepreneurs have joined the adventure.

The conditions in ____ open up the possibility of manufacturing newer and better products.

Challenges remain, but it’s not unreasonable ____ imagine sending a message from a device equipped with semiconductors that were produced in space.

The space project will ultimately reach a point where adventurous minds ____ their technological innovations will be able to travel safely to stars beyond the solar system.

The resources required to drive economic activity that have existed far beyond the reach of humanity are becoming much ____ reachable.

The ____ is no longer about how; it’s about when.