题目内容
阅读理解
During the 19th century, scientists found that when certain parts of a person’s brain were injured, he would lose the power to do certain things. And so, people thought that each part of the brain does.
In the past fifty years there has been a great increase in the amount of research done on the brain. Scientists have found out that the way brain works is not so simple as people in general may think Chemists tell us that about 100,000 chemical changes take place in the brain every second. Some recent researches also suggest that we can remember everything that happens to us. We may not be able to think of the things we have heard and seen, but it is all kept there in the storehouse of the human mind.
Earlier scientists thought that the power of one’s brain got weaker and weaker as one grew older. But if it now thought that that’s not true. As long as the brain is given plenty of exercise, it keeps its power. It has been proved that an old person who has always been active in the mind has a quicker mind than a young person who has only done physical work without using much of his brain.
1.In the last century, scientists found that a person would lose the power to do certain things ________.
[ ]
A.when he had drunk too much
B.if certain parts of his brain were hurt
C.after he did a quite different job
D.if he had been greatly frightened
2.Scientists today are still unable to show exactly ________.
[ ]
A.how many chemical changes take place in the brain each second
B.whether each part of the brain does the same work
C.what each part of the brain is called
D.which part of the brain is the most important
3.It has been found that the brain usually works ________.
[ ]
A.in a fairly complocated(复杂)way
B.a little any rest all day long
C.without any rest all day long
D.in a very simple way
4.Which of the following is not true?
[ ]
A.Scientists are working hard to solve the mysteries of the brain
B.As many as six million changes take place in the brain every minute
C.A young man doing physical labour is sure to have a much slower mind.
D.Even an old man may have a quick mind only if his brain is given much exercise.
5.The more work our brains have, ________.
[ ]
A.the less result we will gain
B.the more tired they will feel
C.the weaker their power will get
D.the more work they are able to do
解析:
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1.从短文的第一句话可以得出结论。 3.从第二段的叙述可知。 5.可从第三段归纳得知。 |
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