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.

l. According to the passage, memory is considered to be      .

A. the basis for decision making and problem solving

B. an ability to store experiences for future use

C. an intelligence typically possessed by human being

D. the data mainly consisting of words and combinations of words

2' The comparison made between the memory capacity of a large computer and that of a human being shows that      .

A. the computer's memory has a litile bigger capacity than a teenager's

B. the computer’s memory capacity is much smaller than an adult human being’s

C.the computer's memory capacity is much smaller even than a teenager's

D.both A ana B

3. The whole passage implies that      .

A. only human beings have problem-solving intelligence

B.a person's memory si 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

4. The Phrase "in terms of” in the last sentene can best be replaced by      .

A. "in connection with"

B. “expressed by”

C. "consisting"

D. “by means of”

5. The topic of the passage is      .

A. What would life be like without memory?

B.Memory is of vital importance to life.