중2 동아 윤정미 4과 본문 변형

People once thought that ____ humans can use tools.

Now, scientists are finding ____ that many animals can also use tools.

If you go to a Buddhist temple in Lop Buri, Thailand, watch out for ____ Macaque monkeys.

They may ____ to you and pull out your hair.

They use human ____ to floss their teeth.

If you are ____ you may see female monkeys that are teaching flossing to their babies.

While the babies are watching, the female monkeys floss their ____ very slowly.

This way, the baby ____ learn to floss.

People don’t usually think that ____ are smart.

However, octopuses are very ____ and they can also use tools.

They ____ coconut shells for protection.

When they can’t find a good hiding ____ they hide under coconut shells.

Some octopuses even store coconut shells for later ____

They pile the coconut shells and carry them to use ____

How ____

In Aesop’s fable ____ Thirsty Crow, a crow drops stones into a jar to raise the level of water.

You may think this is just a story, ____ it is not.

Scientists who were studying ____ did an experiment.

They put a jar with water in ____ of a crow.

A worm was floating on top of the ____

However, the water level was low, so the crow ____ not eat the worm.

The crow solved the problem just as ____ the fable.

It dropped stones into ____ jar.

If you think this bird is special, you are ____

Scientists did the same experiment with other crows, and they all did ____ same, too.