答案:It is believed that schemata, meaning packets of stored knowledge, play an important role in language processing.The features of schemata are as follows: (A)Schemata can vary considerably in the formation they contain.from the very simple to the very complex. (B)Schemata are frequently organized hierarchically; for example.in addition to a rather general restaurant schema or script, we probably also have more specific restaurant schemata for different kinds of restaurant(e.g.fast-food places, up-market French restaurant, and so on). (C)Schemata operate in a top-down or conceptually driven way to facilitate interpretation of environmental stimuli.