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 a 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.
Nowadays our eyes are in constant use.In fact, we use them so much that very often they become weaker and we have to wear glasses.But over a very long period of time it is likely that man's eyes will grow stronger.
On the other hand, we tend to make less use of our arms and legs.These, as a result, are likely to grow weaker.At the same time, however, our fingers will grow more sensitive because they are used a great deal in modern life.
But what about hair？This will probably disappear from the body altogether in course of time because it does not serve a useful purpose any longer.In the future, then，both sexes are likely to be bald.
Perhaps all this gives the impression that future man will not be a very attractive creature to look at！This may well be true.All the same, in spite of all these changes, future man will still have a lot in common with us.He will still be a human being, with thoughts and emotions similar to our own.
【语篇解读】 本文主要介绍了未来人类的外貌可能会出现的变化。
1．The passage mainly tells us that________ .
A．man's life will be different in the future
B．future man will look quite different from us
C．man is growing taller and uglier as time passes
D．man's organs' functions will be on the wane
解析：选B 主旨大意题。从文章第一段可知，本文主要介绍未来人类的外貌可能会出现的变化。C项只是其中一个方面。
2．What serves as the evidence that man is changing?
A．Man has got stronger eyes now than he ever had.
B．Man's hair is getting thinner and thinner.
C．Man's arms and legs have become lighter and weaker.
D．Man has been growing taller over the past 500 years.
解析：选D 细节理解题。从第二段第二句可知，人类身高已经改变。A、B、C三项均为人类未来的变化趋势而不是人类变化的证据。
3．Which of the following is TRUE about a human being in the future?
A．He is hairless because hair is no longer useful.
B．He has smaller eyes and wears better glasses.
C．His fingers grow weaker because he doesn't have to make use of them.
D．He thinks and feels in different ways.
解析：选A 正误判断题。第五段指出人类的头发可能会消失，因为“it does not serve a useful purpose any longer”故A项正确。
4．It is implied that________．
A．human beings will become less attractive in the future
B．less use of a bodily organ may lead to its degeneration
C．human beings hope for a change in the future life
D．future life is always predictable
解析：选B 推理判断题。从人类身体变化可以看出，经常使用的器官部位，如大脑、手指将变得发达，而不常用的器官如头发、四肢可能会退化。
