Animals use senses to find food and stay out of danger. People use them to find out what is happening with their bodies and in the world around them.You probably know about the five basic senses: hearing, seeing, smell, touch and taste. ____1____

Pain Sense

Pain might be regarded as part of the sense of touch. Actually, it isn’t. People and other animals can feel pain even when nothing is touching them. ____2____ It can also warn people to stop or change what they are doing before they get hurt.

Temperature Sense

People can sense the changes in temperature. In winter, many old people move from the cold place to the warm place. The same thing happens to animals. ____3____ So they have the habit of winter sleep.

Time Sense

Scientists think humans have the best sense of time. But probably other animals sense it, too. For example, dogs will wait at the door at a certain time. ____4____

Using Sounds to “See”

Some animals can “see” the things around them in the dark. ____5____ By making sounds and listening to echoes(回声), some whales and birds have this unusual sense.

In a word, many other senses are also being studied besides the senses above. As you explore the world, think about the other senses that animals, including you, use every day.

A. How do they find where things are?

B. Snakes have the ability to “feel”heat.

C. Here are some senses you may not know.

D. It helps people realize that they have been hurt.

E. They seem to know their owners will come back home.