19.What will man be like in the future-in 5,000or even 50,000years 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 suppose 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(容量).As time goes on,however,we shall have to use our brains more and more,and finally we shall need our brains more and more,and finally we shall need larger ones!This is likely to bring 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 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.
51.The passage mainly tells us thatB.
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 change
52.What serves as the evidence(證據(jù)) that man is changing?D
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 500years.
53.The change in man's size of the forehead is probably becauseC.
A.he makes use of only 20% of the brain's capacity
B.his brain has grown larger over the past centuries
C.he will use his brain more and more as time goes on
D.the other 80% of his brain will grow in due time
54.Which of the following is TRUE about a human being in the future?A
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 a different way.
55.It is implied thatB.
A.human beings will become less attractive in the future
B.body organs will become poorer if they are not used often
C.human beings hope for a change in the future life
D.future life is always predictable.
分析 本文是一篇科幻類短文,是關(guān)于將來的人類將變成什么樣子,如果我們對某項(xiàng)技能使用較多,那么我們就可能會(huì)進(jìn)一步發(fā)展該項(xiàng).如果我們不使用,那么某項(xiàng)技能就有可能退化.
解答 51.B.主旨大意題.根據(jù)主題段第一段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.說明本文是關(guān)于將來的人會(huì)與現(xiàn)在的人有很大的差別,故B正確.
52.D.細(xì)節(jié)理解題.由第二段第二句"Man,even five hundred years ago,was shorter than he is today"可知.在過去的500年里一直長高是人類變化的證據(jù);故選D.
53.C.細(xì)節(jié)理解題.根據(jù)第二段6,7行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說明隨著時(shí)間的流逝,人們用鬧越來越多,所以前額也會(huì)發(fā)生變化.故選C.
54.A.細(xì)節(jié)理解題.根據(jù)倒數(shù)第二段1,2行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說明以后人們都將是光頭了,因?yàn)轭^發(fā)沒有用處了.故A正確.
55.B.推理理解題.本文所舉的多個(gè)例子都說明我們的身上的物體的變化都是因?yàn)椴皇褂枚l(fā)生的退化,如我們的頭發(fā),我們的四肢;故選B.
點(diǎn)評 考察學(xué)生的細(xì)節(jié)理解和推理判斷能力,做細(xì)節(jié)理解題時(shí)一定要找到文章中的原句,和題干進(jìn)行比較,再做出正確的選擇.在做推理判斷題不要以個(gè)人的主觀想象代替文章的事實(shí),要根據(jù)文章事實(shí)進(jìn)行合乎邏輯的推理判斷.