Animals, including insects, don't have a "language" like ours. They do not "talk" to each other in words and sentences. But if we watch them, we can see that they do have their ways of communicating with each other.
Can you see the rabbit's tail? When rabbits see this white tail moving up and down, they run away. They know that they are in danger. The rabbit has told them something without making a sound. It has given them a signal.
Many other animals use this kind of "language". When a cobra is angry, it raises its head and makes itself look fierce. This warns other animals. When a bee has found food, it goes back to its home. It cannot "tell" the other bees where the food is by speaking to them, but it does a little dance. This tells the bees where the food is.
Some animals "say" things by making sound. A dog barks, for example, when a stranger comes near. A cat purrs when it is pleased. Some birds make several different sounds, each with its own meaning. Sometimes we human beings speak in the same way. We make sound like "Oh" or "Ah" when we are frightened or pleased or when we drop something on our toes.
A rabbit uses its tail to ________.

A．warn other rabbits when they are in danger

B．tell other rabbits where food is

C．make itself look fierce

D．help it to run fast

When a cobra is angry, it ________.

A．makes a loud noise

B．raises its head

C．moves up and down

D．does a little dance

Several different sounds can be made by a ________.

A．rabbit

B．bee

C．bird

D．fish

From the passage, we know that ______ use words and sentences to express ideas and thoughts.

A．all living things	B．all animals
C．some birds	D．human beings