题目内容
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Does brain power ______ as we get older？ Scientists now have some surprising answers.
A．descend
B．decline
C．deduce
D．collapse
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Does brain power ______as we get older？ Scientists now have some surprising answers.
A．descend
B．decline
C．deduce
D．collapse
听力原文： During the 19th century scientists thought that each part of our man's brain does a different job. In the past fifty years there has been a great increase in the amount of research done on the brain. Scientists have discovered that the way the brain works is not so simple as people may think. Chemists tell us that 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 back the things we've heard and seen, but it is all kept there in the storehouse of the human mind. Earlier scientists thought that power of one's brain got weaker and weaker as one grew older. But it is now thought that that is 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. It is now thought that the more work we give our brains, the more work they are able to do.
What did the 19th century scientists think about our brain？
A．Different part of the brain had different effect.
B．Chemical changes stopped during our sleeping;
C．There was a storehouse in the brain.
1.In the 19th century, scientist found that a person would lose the power to do certain things()
A、when he got weaker in health
B、if certain parts of his brain were hurt
C、after he did a quite different job
D、when he grew older
2.Scientists today are still unable to show exactly()
A、what each part of the brain is doing
B、how many chemical changes take place in the brain each second
C、whether each part of the brain does the same job
D、which part of the brain is the most important
3.It has been found that one's brain usually works ()
A、faster when he is old
B、a little now and a little then
C、in a very simple way
D、more complicated than we thought
4.Which of the following is NOT true according to the text？()
A、Scientists are working hard at the researches on the brain.
B、As many as six million chemical changes take place in the brain every minute.
C、A young man doing physical labor is sure to have a much slower min
D、Even an old man may have a quick mind if his brain is given much exercise.
5.The more work we give to our brains()
A、the less result we will gain
B、the more work they are able to do
C、the weaker their power will get
D、the more tired they will feel
Exercising Your Memory
1 Aging does not mean a dramatic decline in memory power, unless you help it
happen by letting your mind go.
2 That's not to say that memory doesn't change throughout life. Researchers divide
memory into categories based on the length of time when memories are stored. One
system divides it up as short-term (less than one minute; remembering a telephone
number while you dial, for instance), long-term (over a period of years) and very
long-term memory (over a lifetime).
3 Short-term memory isn't mastered until about age 7, but after that you never lose it. Long-term memory, however, involves more effort and skill and changes more through life. It's not until the early teens (十几岁) that most people develop a mature long-term memory.
4 First, we must get information into our heads through learning. Learning strategies can get rusty (生锈的) without constant use. High school and college students, who are forced to repeatedly exercise their long-term memory abilities (at least long-term enough to get them through a final exam), usually do well on memory tests. The longer you stay in school, the more chance you get to polish your learning, skills. It's no wonder that more highly educated people have more effective memory skills throughout life.
5 Although older people in general learn somewhat more slowly than they did-when
younger, a dramatic difference exists between those who stay intellectually active --reading, discussing, taking classes, thinking -- and those who do not. Giving the brain a daily workout (锻炼) is just as important as exercising your muscles. Brainwork keeps your learning strategies in shape, and this helps your memory to function at full capacity.
6 The next part of a healthy long-term memory is retention (记忆力), the ability to store what you have learned. Memory researchers still do not know whether memories are lost--whether they still exist in the brain but our mental searching cannot turn them up, or have disappeared entirely as our brain ages.
7 The third necessity for memory is recall, the ability to bring to mind the memories we have stored. Again, while aging has widely different effects on the recall abilities of different people, research indicates that the older we get, the longer it takes to recall facts. But slower recall is still recall. In fact, aging does not seem to have any effect on forgetting at all, which takes place at the same rate in younger and older people.
第 23 题 Paragraph 3＿＿＿＿＿＿＿
Computers imitate life. As computers get more complex, the imitation gets better. Finally, the line between the original and the copy becomes unclear. In another 15 years or so, we will see the computer as a new form. of life.
The opinion seems ridiculous because, for one thing, computers lack the drives and emotions of living creatures. But drives can be programmed into the computer's brain just as nature programmed them into our human brains as a part of the equipment for survival.
Computers match people in some roles, and when fast decisions are needed in a crisis, they often surpass them. Having evolved when the pace of life was slower, the human brain has an inherent defect that prevents it from absorbing several streams of information simultaneously and acting on them quickly. Throw too many things at the brain at one time and it freezes up.
We are still in control, but the capabilities are increasing at a fantastic rate, while raw human intelligence is changing slowly, if at all. Computer power has increased ten times every eight years since 1946. In the 1990s, when the sixth generation appears, the reasoning power of an intelligence built out of silicon will begin to match that of the human brain.
That does not mean the evolution of intelligence has ended on the earth. Judging by the past, we can expect that a new species out of man, surpassing his achievements as he has surpassed those of his predecessor. Only a carbon chemistry would assume that the new species must be man's flesh-and-blood descendants. The new kind of intelligent life is more likely to be made of silicon.
Today, we cannot see computer as a new form. of life in terms of ______ .
A．quickness of decision making
B．drives and sentiment
C．development of reasoning power
D．information storage
Computers imitate life. As computers get more complex, the imitation gets better. Finally, the line between the original and the copy be comes unclear. In another 15 years or so, we will see the computers as a new form. of life.
The opinion seems ridiculous because, for one thing, computers lack the drives and emotions of living creatures. But drives can be programmed into the computer's brain just as nature programmed then into our human brain as a part of the equipment for survival.
Computers match people in some roles, and when fast decisions are needed in a crisis, they often surpass them. Having evolved when the pace of life was slower, the human brain has an inherent defect that pre vents it from absorbing several streams of information simultaneously and acting on them quickly. Throw too many things at the brain at one time and it freezes up.
We are still in control, but the capabilities of computers are in creasing at a fantastic rate, while raw human intelligence is changing slowly, if at all. Computer power has increased ten times every eight years since 1946. In the 1990s, when the sixth generation appears, the reasoning power of an intelligence built out of silicon will begin to match that of the human brain.
That does not mean the evolution of intelligence has ended on the earth. Judging by the past, we can expect that a new species will arise out of man, surpassing his achievements as he has surpassed those of his predecessor. Only a carbon chemistry enthusiast would assume that the new species must be man's flesh-and-blood descendants. The new kind of intelligent life is more likely to be made of silicon.
What do you suppose was the attitude of Dr. Samuel Johnson towards ladies preaching？
A．He believed that ladies were born worse preacher than man.
B．He was pleased that ladies could preach, though not as well as inert.
C．He disapproved of ladies preaching.
D．He encouraged ladies to preach.
第二节 完型填空
阅读下面短文，从短文后所给各题的四个选项(A、B、C和D)中选出能填入相应空白处的最佳选项。
During the 9th century scientists found that when certain parts of the brain of a man were 【B1】 ,he would lose the 【B2】 to do certain things. And so, people thought that each part of the brain does a different 【B3】 . But modern research has 【B4】 out that this is not so, for it is not 【B5】 to say 【B6】 what each part of the brain does.
In the past fifty years there 【B7】 a great increase in the amount of research 【B8】 on the brain. Chemists and biologists have 【B9】 that the 【B10】 the brain works it is not so 【B11】 as people in general may think. Chemists tell us that 100,000 chemical changes 【B12】 in the brain every second. Some recent researches also 【B13】 that we can remember every thing 【B14】 happens 【B15】 us. We 【B16】 not be able to recall(回忆)the things we've heard and seen, but it is all kept there in the storehouse of the human mind.
Earlier scientists thought the power of one's brain got weaker as one grow 【B17】 . But it is now thought that is not 【B18】 . As long as the brain is 【B19】 【B20】 exercise it keeps its ability. 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. It is now thought that the more work we give our brains, the more work they are able to do.
【B1】
A．destroyed
B．injured
C．broken
D．wounded
第二节 完型填空
阅读下面短文，从短文后所给各题的四个选项(A、B、C和D)中选出能填入相应空白处的最佳选项。
During the 9th century scientists found that when certain parts of the brain of a man were 【B1】 , he would lose the 【B2】 to do certain things. And so, people thought that each part of the brain does a different 【B3】 . But modern research has 【B4】 out that this is not so, for it is not 【B5】 to say 【B6】 what each part of the brain does.
In the past fifty years there 【B7】 a great increase in the amount of research 【B8】 on the brain. Chemists and biologists have 【B9】 that the 【B10】 the brain works it is not so 【B11】 as people in general may think. Chemists tell us that 100,000 chemical changes 【B12】 in the brain every second. Some recent researches also 【B13】 that we can remember everything 【B14】 happens 【B15】 us. We 【B16】 not be able to recall (回忆) the things we've heard and seen, but it is all kept there in the storehouse of the human mind.
Earlier scientists thought the power of one's brain got weaker as one grow 【B17】 . But it is now thought that is not 【B18】 . As long as the brain is 【B19】 【B20】 exercise it keeps its ability. 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. It is now thought that the more work we give our brains, the more work they are able to do.
【B1】
A．destroyed
B．injured
C．broken
D．wounded
第二节 完型填空
阅读下面短文，从短文后所给各题的四个选项(A、B、C和D)中选出能填入相应空白处的最佳选项。
During the 19th century scientists found that when certain parts of the brain were (36) , men lost the (37) to do certain things. And so people thought that each part of the brain does a (38) job. But modern research has found out that this is (39) , for it is not easy to say exactly what each part of the head does.
In the past fifty years there (40) a great increase in the amount of research (41) on the brain. Chemists and biologists have (42) that the way the brain works is not so simple (43) people had thought. Chemists tell us that about 100,000 chemical changes (44) in the brain every second. Some recent researches also (45) that we remember everything. (46) happens to us. We may (47) to recall the thing we have heard or seen, but it is all kept there in our brains.
Earlier scientists said that the power of (48) brain got weaker and weaker as (49) grows older. But it is now (50) that that is not true. (51) the brain is given enough exercise, it keeps its ability. (52) has been proved that an old person who has always been active in the mind has a (53) mind than a young person who has only done (54) work (55) using much of his brain.
(36)
A．damaged
B．hurt
C．broken
D．lost
回答题：
Exercising Your Memory
1 Aging does not mean a dramatic decline in memory power， unless you help it happen by let-ting your mind go.
2 That"s not to say that memory doesn"t change throughout life. Researchers divide memory into categories based on the length of time when memories are stored. One system divides it up as short-term （less than one minute; remembering a telephone number while you dial， for in-stance） ， long-term （over a period of years） and very long-term memory （over a lifetime）.
3 Short-term memory isn"t mastered until about age 7， but after that you never lose it. Long-term memory， however， involves more effort and skill and changes more through life. It"s not until the early teens （十几岁） that most people develop a mature long-term memory.
4 First， we must get information into our heads through learning. Learning strategies can get rusty （生锈） without constant use. High school and college students， who are forced to repeatedly exercise their long-term memory abilities （at least long-term enough to get them through， a final exam）， usually do well on memory tests. The longer you stay in school， the more chance you get to polish your learning skills. It"s no wonder that more highly educated people have more effective memory skills throughout life.
5 Although older people in general learn somewhat more slowly than they did when younger， a dramatic difference exists between those who stay intellectually activE．reading， discussing， taking classes， thinking and those who do not. Giving the brain daily workout （锻炼） is just as important as exercising your muscles. Brainwork keeps your learning strategies in shape， and this helps your memory to function at full capacity.
6 The next part of a healthy long-term memory is retention （记忆力）， the ability to store what you have learned. Memory researchers still do not know whether memories are lost whether they still exist in the brain but our mental searching cannot turn them up， or have disappeared entirely as our brain ages.
7 The third necessity for memory is recall， the ability to bring to mind the memories we have stored. Again， while aging has widely different effects on the recall abilities of different people.
research indicates that the older we get， the longer it takes to recall facts But slower recall is still recall. In fact， aging does not seem to have any effect on forgetting at all. which takes place at the same rate in younger and older people.
Paragraph 3 __________. 查看材料
A.Importance of staying intellectually active
B.Effects of aging on a person"s recall ability
C.Short-term memory versus long-term memory
D.Retention as the second necessity for memory
E.Link between learning strategies and effective memory skills
F.Significance of exercising your muscles
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