Language is the most astonishing behavior. in the animal kingdom. It is the species-typical behavior. that sets humans completely __67__ from all other animals. Language is a means of communication, __68__ it is much more than that. Many animals can __69__. The dance of the honeybee communicates the location of flowers __70__ other members of the hive (蜂群). But human language permits communication about anything, __71__ things like unicorn (独角兽) that have never existed. The key __72__ in the fact that the units of meaning, words, can be __73__ together in different ways, according to __74__, to communicate different meanings. Language is the most important learning we do. Nothing __75__ humans so much as our ability to communicate abstract thoughts, __76__ about the universe, the mind, love, dreams, or ordering a drink. It is an immensely complex __77__ that we take for granted. Indeed, we are not aware of most __78__ of our speech and understanding. Consider what happens when one person is speaking to __79__. The speaker has to translate thoughts into __80__ language. Brain imaging studies suggest that the time from thoughts to the __81__ of speech is extremely fast, only 0.04 seconds! The listener must hear the sounds to __82__ out what the speaker means. He must use the sounds of speech to __83__ the words spoken, understand the pattern of __84__ of the words (sentences), and finally __85__ the meaning. This takes somewhat longer, a minimum of about 0.5 seconds. But __86__ started, it is of course a continuous process. 67. A) apart B) off C) up D) down