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  3. It is difficult to imagine what life would be like without memory. The meanin

It is difficult to imagine what life would be like without memory. The meanin

游客2024-01-14  50
问题    It is difficult to imagine what life would be like without memory. The meanings of thousands of everyday perceptions, the bases for the decisions we make, and the roots of our habits and skills are to be found in our past experiences, which are brought into the present by memory.
   Memory can be defined as the capacity to keep information available for later use. It includes not only "remembering" things like arithmetic or historical facts, but also involving any change in the way an animal typically behaves. Memory is involved when a rat gives up eating grain because he has sniffed something suspicious in the grain pile. Memory is also involved when a six-year-old child learns to swing a baseball bat.
   Memory exists not only in humans and animals but also in some physical objects and machines. Computers, for example, contain devices for storing data for later use. It is interesting to compare the memory-storage capacity of a computer with that of a human being. The instant-access memory of a large computer may hold up to 100, 000 "words"—ready for instant use. An average U. S. teenager probably recognizes the meaning of about 100, 000 words of English. However, this is but a fraction of the total amount of information which the teenager has stored. Consider, for example, the number of faces and places that the teenager can recognize on sight.
   The use of words is the basis of the advanced problem-solving intelligence of human beings. A large part of a person’ s memory is in terms of words and combinations of words. [br] The topic of the passage is: ______
选项 A、What would life be like without memory?
B、Memory is of vital importance to life.
C、How is a person’ s memory different from an animal’ s or a computer’ s?
D、What is contained in memory?
答案 B
解析 主旨题。文章第一段说明记忆对于我们生活的重要性；第二段表述记忆是什么，并举例说明；第三段通过比较表明人的大脑可以存储许多东西；第四段说明记忆与词的关系。选项A(没有记忆，生活会是什么样子)虽然在文章开头提到了，但是过于片面，不能用来概括文章的主旨。选项C(人的记忆与动物的记忆和计算机的存储有什么不同)文章中并未提及。选项D(记忆里都有什么东西)在文中有提到，比如过去的经验、人脸、地方、单词等，但这并不是文章的重点。选项B(记忆对我们的生活很重要)符合题意，故本题选B。
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