C. research

　　D. exercise

　　14. A. softly

　　B. loudly

　　C. slowly

　　D. firmly

　　15. A. everything

　　B. something

　　C. nothing

　　D. anything

　　16. A. eyes

　　B. feet

　　C. head

　　D. body

　　17. A. believe

　　B. repeat

　　C. take

　　D. understand

　　18. A. really

　　B. extremely

　　C. actually

　　D. almost

　　19. A. accept

　　B. remember

　　C. hear

　　D. receive

　　20. A. count

　　B. say

　　C. add

　　D. speak

　　阅读理解

　　A

　　What will man be like in the future－in 5,000 or even 50,000 years from now? We can only make guesses, of course, but we can be sure that he will be different from what he is today. For man is slowly changing all the time.

　　Let us take an obvious example. Man, even five hundred years ago, was shorter than he is today. Now, on average, men are about three inches taller. Five hundred years is relatively short period of time, so we may assume that man will continue to grow taller. Again, in the modern world we use our brains a great deal. Even so, we still make use of only about 20% of the brain's capacity. As time goes on, however, we shall have to use our brains more and more, and eventually we shall need larger ones! This is likely to bring about a physical change to the head, in particular the forehead, will grow larger.

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