Question

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 a 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.

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 use. He will still be a human being，with thoughts and emotions similar to our own.

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

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.

3.The change in man's size of forehead is probably because______.

A. he makes use only 20% of the brain's capacity

B. his brain has grown larger over the past centuries

C. the other 80% of his brain will grow in due time

D. he will use his brain more and more as time goes on

Answer

1.B

2.D

3.D

【解析】这是一篇科普说明文。介绍了作者对人类未来外貌、体形如何变化的猜测。文章推测，未来人类会长的更高，大脑体积更大，手臂和腿可能会退化等。本篇文章题目较简单。

1.主旨大意题。问题是：本文主要讲了什么。本文主要介绍未来人类的外貌。A未来人们的生活会与现在很不一样。文中没有涉及，是无关项。B 未来人们看上去会和现在很不一样。符合文章主题，应选B。C随着时间的推移，人们会长的更高更丑。C项不具备概括性。D人类的器官功能将会衰退。文章没有涉及。因此选B。

2.考察细节推理。题目问的是，人类外貌逐渐变化的依据是什么。答案见第二段第二句：500年前的人类普遍比现在要矮一些。D项正确，而A、B、C三项均为人类未来的变化趋势，并不是人类变化的证据。

3.考察细节推理。题目问，人类额头容量变化的原因。答案在第二段，最后两句说人类将更多地使用大脑，最终大脑变大，前额容量变大。故选D“随着时间推移，人类会越来越多地使用大脑”。