공통영어1 YBM 박준언 2과 본문 빈칸 테스트

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

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

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

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

This animal is ____ an octopus.

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

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

For ____, the Kraken, a sea 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 ____ any meaningful similarities.

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

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

The best evidence is their ____ to camouflage themselves.

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

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

Even chameleons can utilize only a handful of ____ 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 ____ quickly which color, pattern, and texture to choose.

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

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

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

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

In the wild, they use stones to create ____ 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 ____ in 2009 in Indonesia.

A few octopuses were found to collect ____ shells.

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

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

This made the octopuses more exposed to ____.

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

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

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

They are curious about new objects, and do not ____ getting bored.

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

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

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

Our knowledge about the octopus is ____ very limited.

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

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

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

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

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

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

Few ____ today deny that octopuses are intelligent animals.

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

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

____ you curious about what is inside their mind?