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 like a ____.

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

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

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

This animal is called an ____.

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

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

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

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

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

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

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

The best evidence is their ____ to camouflage themselves.

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

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

Even chameleons can utilize only a handful of fixed ____.

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

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

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

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

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

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

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

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

The most impressive ____ of octopuses using tools came in 2009 in Indonesia.

A few octopuses were ____ to collect coconut shells.

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

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

This made the octopuses ____ exposed to predators.

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

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

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

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

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

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

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

Our knowledge about the octopus is still very ____.

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

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

Of course, it is ____ for us to know 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 ____ seems to be excited, while it is white when it is relaxed.

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

The octopus seems to be worried that it may ____ solve the problem.

Few scientists ____ deny that octopuses are intelligent animals.

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

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

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