Many animals use some kinds of “language”. They use signals(信号) and the signals have meanings. For example, when a bee has found some food, it goes 1its home. 2is difficult for a bee to tell 3bees where the food is .It can't speak, but it can do a little dancing. This tells the bees where the food is .Some animals show 4they feel by making sounds. It is not difficult to tell if a dog is angry because it barks. Birds make several different sounds and 5 has its meaning. Sometimes we humans make sounds in the same way. We make sounds like “Oh” to 6how we feel about 7We humans have languages. We have words. These words have meaning of things, action, feeling or ideas. We are able to give each other information, to tell other people 8we think or we feel. By writing down words, we can remember what has happened .Languages, like people, live and die. If a language is not used by people, it is called a dead language. This language cannot live and grow because 9 speaks it.A living language, of course, is often spoken by people today. It grows and changes with time. New words are created, and some old words have 10 meanings.