科学技术要在较短时期内取得成就,就要积累大量的信息.熟悉信息几乎成了各行各业取得进步的必需条件.强大的信息源和各种传递信息渠道(无线电、电视等等)的出现,不仅决定了我们这个时代生产劳动的特点,而且还决定了人们的休息和娱乐方式.人类活动中有着成千成万的事件,人脑面临着大量的各种各样的新的信息,必须感知、 Science and technology, to be successful in a relatively short period of time, need to accumulate vast amounts of information, and familiarity with information has become a prerequisite for progress in almost every sector. Strong sources of information and various channels of transmission of information (radio, television, etc.) Not only determines the characteristics of productive labor in our time but also determines the way people rest and entertain themselves.There are tens of thousands of events in human activities and the human brain is faced with a great variety of new information that must be perceived,