공통영어1 YBM 박준언 2과 본문 빈칸 테스트

Here is an animal with poison like a snake, a hard and pointed mouth like a bird, and ink ____ a pen.

It can weigh as much as an ____ human and stretch as long as a car.

Yet it can put ____ boneless body through a hole the size of an orange.

It can change color and shape, and it can taste with ____ skin.

This animal is ____ an octopus.

The octopus looks so alien to the people of the West that it has caused dislike or even horror in ____.

The dislike or horror ____ create the image of an octopus as an evil creature living in the deep sea.

For example, the Kraken, a ____ monster in old Icelandic tales, looks just like an enormous octopus.

Another example is Ursula, the sea ____ featured in the famous tale, The Little Mermaid.

To this day, it is difficult for us to imagine that octopuses and humans share any meaningful ____.

During the past few decades, however, scientists have begun to find ____ and more similarities between octopuses and humans.

____ of the most interesting ones is intelligence. Octopuses are smart.

The best ____ is their ability to camouflage themselves.

An octopus can change its color, pattern, and texture, and the ____ are carried out almost instantly.

In terms of speed and the diversity of change, no other animal can ____ octopuses.

Even chameleons can utilize only a ____ of fixed patterns.

The ____ purpose of these changes is to avoid detection by their hunters or their prey.

When an octopus encounters its hunter or prey, it must decide very quickly which ____, pattern, and texture to choose.

Such a decision implies that it ____ gained sufficient knowledge of the surrounding animals and applies it to survive.

To acquire knowledge and apply it for a ____ purpose is a sure sign of intelligence.

Another sign of the intelligence of the octopus is its use of ____.

In the lab, octopuses use tools to ____ food rewards.

In the wild, they use stones to ____ walls to protect the entrances to their homes.

They use not only stones but ____ they can find to protect themselves.

The most impressive example of octopuses using tools came in ____ in Indonesia.

A ____ octopuses were found to collect coconut shells.

They cleaned the shells with bursts of water, carried them to a ____ location, and piled them as a shelter.

Traveling with the shells under their bodies ____ them to walk slowly along the sea floor.

This made the octopuses more ____ to predators.

But it seems that they were willing to take that risk for greater future ____.

The scientists who discovered the behavior ____ that this is clear evidence of octopuses using tools.

Octopuses’ use of tools can be found in their love of ____ and puzzles, too.

They are curious about new objects, and do ____ like getting bored.

That is why ____ try to come up with ideas to keep their octopuses busy.

Some aquariums ____ food inside a big doll and let the octopus break up the toy to get the food.

Others offer plastic building ____ for their octopuses to play with.

Our knowledge about the octopus is still very ____.

Thanks to the efforts of scientists, ____, it is expanding year by year.

One of the most impressive new findings about the octopus is that it seems to have ____.

Of course, it is impossible for us to ____ exactly what they feel, but a few of their changes in skin color seem to be linked to their feelings.

For example, a giant Pacific octopus that turns red seems to be excited, while it is white ____ it is relaxed.

An octopus presented with a difficult puzzle often undergoes ____ rapid changes in color.

The octopus seems to be ____ that it may not solve the problem.

Few scientists ____ deny that octopuses are intelligent animals.

____ it is time that we stopped thinking of them as alien creatures and acknowledged them as intelligent animals like us.

There is still so much we do not know about the ____.

Aren’t you curious about ____ is inside their mind?