공통영어1 YBM 박준언 2과 본문 빈칸 테스트

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

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

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

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

This animal is called ____ octopus.

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

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

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

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

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

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

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

The ____ evidence is their ability to camouflage themselves.

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

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

Even chameleons can ____ only a handful of fixed patterns.

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

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

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

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

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

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

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

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

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

A ____ octopuses were found to collect coconut shells.

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

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

This ____ the octopuses more exposed to predators.

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

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

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

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

That is why aquariums try to come up with ideas ____ 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 blocks ____ their octopuses to play with.

Our knowledge about ____ octopus is still very limited.

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

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

Of course, it is impossible ____ 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 ____ turns red seems to be excited, while it is white when it is relaxed.

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

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

Few scientists today deny that octopuses are intelligent ____

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

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

____ you curious about what is inside their mind?