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听力原文： 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. 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 too: 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 modem life.
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When we speak of "symbolic process" in the brain or in the mind, we are referring to our ability to【C1】______elements of our experience and to【C2】______them with distinct mental symbols. Other species certainly possess【C3】______in some sense, but as far as we know, they live in the world simply【C4】______it presents itself to them.【C5】______, for them the environment seems very much like a continuum, rather than a place, like ours, that is【C6】______into the huge number of separate elements【C7】______which we humans give individual names. By separating out its elements in this way, human beings are able constantly to re-create the world, and individual aspects of it, in their mind. And【C8】______makes this possible is the ability to form. and to【C9】______mental symbols that correspond to elements we【C10】______in the world within and【C11】______ourselves. Members of other species often display high【C12】______of intuitive reasoning, reacting to stimuli front the environment in quite complicated ways,【C13】______.... only humans are able arbitrarily to【C14】______and recombine mental symbols and to ask themselves questions such as ."What if". And it is the ability to do this,【C15】______everything else, that forms the foundation of our boasted creativity.
Of course,【C16】______reasoning still remains a fundamental【C17】______of our mental processes; what we have done is to add the capacity for symbolic manipulation【C18】______this basic ability. An intuitive appreciation of the relationships among【C19】______and ideas is, for example, almost certainly as large a force in basic scientific creativity【C20】______is symbolic representation; but in the end it is the unique of the two that makes science--or art, or technology— possible.
【C1】
A．Most people like listening to music.B．People in the USA often go to psychologists to
A．On the average, they will be taller.B．Their heads will be larger.C．Their fingers wil
听力原文：W: Did you turn off the lights and check the locks on all the doors and windows？
M: Yes, and I told the neighbors we'd be gone for two weeks. They'll keep an eye on the house for us.
Q: Where are the man and woman going？
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