공통영어1 YBM 박준언 2과 본문 빈칸 테스트

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

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

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

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

This animal is called ____ octopus.

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

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

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

Another example ____ Ursula, 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 any ____ similarities.

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

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

The best evidence is their ability to ____ themselves.

An ____ can change its color, pattern, and texture, and the changes 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 handful of ____ patterns.

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

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

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

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

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

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

In the ____ they use stones to create 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 few octopuses were found to collect ____ shells.

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

Traveling with the shells under their bodies forced them to ____ 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 scientists who discovered the behavior argue that this ____ clear evidence of octopuses 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 why aquariums try ____ come up with ideas to keep their octopuses busy.

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

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

Our ____ about the octopus is still very limited.

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

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

Of course, it is impossible for us to know ____ 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 when ____ is relaxed.

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

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

Few scientists today deny ____ octopuses are intelligent animals.

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

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

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