공통영어1 천재 조수경 4과 변형문제

When you go deep into the sea, you can see a variety of marine ____ including corals.

Over the course of many years, ____ build up to form large structures called coral reefs.

Brightly ____ coral reefs provide a beautiful underwater landscape.

However, this is not the ____ reason they are valuable.

____ of Coral Reefs

Coral reefs are crucial ecosystems that protect both marine life and people living near the ____.

Coral reefs provide shelter to an abundance of marine ____, such as fish and underwater plants.

Because of the diversity of life found in coral reefs, they are ____ called “the rainforests of the sea.”

Nearly one quarter of all known marine species ____ on coral reefs for survival — they hide themselves from predators, find food, reproduce, and raise their young in coral reefs.

As far as humans are concerned, ____ half a billion people rely on coral reefs for safety and survival.

When large waves generated by storms rush ____ shore, coral reefs serve as natural barriers.

The force of the waves is reduced as they hit the coral ____.

Consequently, they prevent the ____ on the shore from washing away and thus protect towns near the sea.

Moreover, reefs are a source of medicine, and many organisms found in ____ reefs are used to treat diseases like cancer.

This is why they are sometimes referred to as the “medicine ____ of the sea.

These underwater ____ are under threat of destruction.

The more coral reefs become damaged, the more creatures relying on them will lose their ____.

Thus, the increasing loss of coral reefs might lead to the destruction of the ____ marine ecosystem.

The U.N. reported that many of the world’s coral ____ are currently endangered.

In fact, nearly half of Australia’s Great Barrier Reef, the ____ largest, has disappeared.

If swift ____ is not taken, scientists estimate that most coral reefs will be destroyed by 2050.

What causes ____ reefs to die?

There are various causes, ____ destructive fishing techniques, overpopulation of corals’ natural enemies, and careless tourism.

However, the leading cause is the rise in water temperature due to global ____.

The ideal ____ range for corals to live is 20°C to 28°C.

When the water temperature rises above 30°C, coral reefs ____ white and eventually die.

Another serious ____ is plastic waste.

Plastic products, such as bottles and ____ lines, have been dumped into the sea.

This spreads viruses and diseases, ____ coral reefs and their inhabitants.

In ____ years, advanced technologies have been put in place to save coral reefs by monitoring, protecting, and restoring them in quick and efficient ways.

Researchers from ____ introduced a soft jellyfish-like robot to monitor coral reefs without damaging their delicate bodies.

In addition, an Australian research team invented an intelligent ____ robot to protect coral reefs from a dangerous species of starfish.

The robot uses a camera and computerized vision system to scan the reefs and ____ this starfish.

When it encounters one, the robot uses a foldable arm to inject some toxic salt into the starfish and ____ it.

Meanwhile, 3D printing ____ have been proposed in Hong Kong as one way to restore coral reef structures.

The 3D printer creates artificial ____ for corals.

An ____ is a block made of mud that lies on the floor of the ocean.

It is shaped in a way that allows corals to ____ to it and grow easily.

Actions to Save ____ Reefs

Here are some simple but effective steps we can take in order to help protect ____ reefs.

First, you can avoid using ____ products containing tiny pieces of plastic because they pollute the oceans.

Also, ____ not to use sunscreen made with certain chemicals that damage corals.

Second, you can volunteer to help ____ the beach.

Recycling and ____ trash is a huge help in maintaining a clean ocean.

Last but not least, make it known that coral reefs are in danger by spreading the word to people ____ you.

Let people ____ about the threat to coral reefs and what actions to take to save them.

This will ____ a big difference for the future.