题目内容：

What will man be like in the future—in 5,000 or even 50,000 years from now? We can only make a guess, 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, so we may assume (假定) that man will continue to grow taller. Again, as time goes on, we shall have to use our brains more and more. 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 are likely to make less use of our arms and legs, which, 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.

Perhaps all these give the impression that in the 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.

1. What does the passage mainly tell us?

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 weaker.

2. What serves as the evidence that man is changing?

A. Man’s hair is getting thinner and thinner.

B. Man has got stronger eyes now than he ever had.

C. Man’s arms and legs have become lighter and weaker.

D. Man has been growing taller over the past 500 years.

3. According to the passage, we can learn that ________.

A. human beings will become less attractive in the future

B. less use of a part of the body will become weaker

C. human beings hope for a change in the future life

D. future life is always predictable