heat_100字

　

　



　　 Heat comes from many things. Heat comes from the sun. Heat comes from gas. Heat comes from oil. We can burn wood. It makes heat.

　　 We use heat in many ways. We use it to cook. We use it to keep warm. We use it to dry things.

　　 Your body makes heat. Put your hand on your head. Does it feel hot? Your body is like a stove. It does not burn wood. It burns food. Food helps you keep warm.