공통영어1 YBM 박준언 2과 본문 빈칸 테스트

Here is an animal ____ poison like a snake, a hard and pointed mouth like a 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 the size ____ an orange.

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

This ____ is called an octopus.

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

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

____ example, the Kraken, 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 ____ it is difficult for us to imagine that octopuses and humans share any meaningful similarities.

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

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

The best evidence is ____ ability to camouflage themselves.

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

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

Even chameleons ____ utilize only a handful of fixed patterns.

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

When an octopus ____ 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 ____ and applies it to survive.

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

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

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

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

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

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

A few octopuses were found to collect ____ 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 forced them to walk slowly along ____ sea floor.

This made the octopuses more ____ to predators.

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

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

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

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

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

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

Others offer plastic building blocks for their octopuses to play ____

Our knowledge about the octopus is still ____ limited.

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

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

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

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

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

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

____ scientists today deny that octopuses are intelligent animals.

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

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

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