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It is difficult to imagine what life would be like without memory. The meanings of thousands of everyday perceptions, the bases

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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 involves any change in the way an animal typically behaves. Memory is involved when a rat gives up an 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. Computer, for example, contains 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 1,000 ,000"words" ready for instant use. An average U. S. teenager probably recognizes the meaning of about 100,000 words of English. However, his 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.
The whole passage implies that . (  )
选项 A、only human beings have problem solving intelligence
B、a person’s memory is different from a computer’s in every respect
C、animals are able to solve only very simple problems
D、animals solve problems by instincts rather than intelligence
答案A
解析 细节题。“全文暗示了什么?”A选项“只有人能通过智力解决问题”正确。文中最后一段说“The use of words…of human beings”。B选项“人的记忆与计算机的记忆在各个方面都不同”；C选项“动物只能解决非常简单的问题”；D选项“动物解决问题靠本能而不是靠智力”，这三项内容在文中都没有提到。
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