完形填空
Many animals use some kinds of “language”. They use signals(信号) and the signals have meanings. For example, __1 a bee has found some food, it goes 2 its home. 3 is difficult for a bee to tell __4 bees where the food is speaking to them, but it can do a little dancing. This tells the bees where the food is and 5 it is.
Some animals show 6 they feel by making sounds. It is not difficult to tell if a dog is angry because it barks. Birds make several different sounds and 7 has its meaning. Sometimes we humans make sounds in the same way. We make sounds like “Oh” to 8 how we feel about __9__ or we 10 something on our feet.
