공통영어1 천재 조수경 4과 변형문제

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

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

Brightly colored coral reefs ____ a beautiful underwater landscape.

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

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

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

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

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

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

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

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

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

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

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

These underwater treasures are under ____ of destruction.

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

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

The U.N. reported that many of the ____ coral reefs are currently endangered.

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

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

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

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

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

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

____ serious cause is plastic waste.

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

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

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

Researchers from Florida introduced a soft jellyfish-like robot to monitor coral reefs ____ damaging their delicate bodies.

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

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

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

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

The 3D printer creates artificial ____ for corals.

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

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

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

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

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

Second, you can volunteer to help clean the ____.

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

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

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

This will make a big ____ for the future.