阅读理解

　　During the 19th century, scientists found that when certain parts of 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 a different job. But modern research has discovered that this is not so, for it is not easy to show exactly what 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 the brain work 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 store - house of the human mind.

　　Earlier scientists thought that the power of one's brain got weaker and weaker as one grew older. But it is now thought 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 brains 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 doing

D．which part of the brain is the most important.

3．It has been found that the brain usually works ________

[　　]

A．in a fairly complicated(复杂) way

B．a little now and a little then

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 (解决) 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

阅读理解

　　During the 19th century, scientists found that when certain parts of 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 a different job. But modern research has discovered that this is not so, for it is not easy to show exactly what 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 the brain work 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 store - house of the human mind.

　　Earlier scientists thought that the power of one's brain got weaker and weaker as one grew older. But it is now thought 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 brains 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 doing

D．which part of the brain is the most important.

3．It has been found that the brain usually works ________

[　　]

A．in a fairly complicated(复杂) way

B．a little now and a little then

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 (解决) 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

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

    1 the 19th century scientists found that when certain parts of　　 the brain of a man 2, he could lose the power to do some things. And　　 so, people thought that each part of the brain did 3. But modern　　 research 4 that this is not so, for it is not easy to say exactly 5　　 each part of the brain does.

　　     In the past fifty years, 6 a great increase in the amount of research 7 on the brain. Chemists and biologists 8　　 that the way the　　 brain works is not so simple 9 people in general may think. Chemists　　 tell us that 1,000,000 chemical changes 10 in the brain every second.　　 Some recent researches also suggest that we 11 everything that happens　　 12 us. We may not be able to recall the things we've heard and 13, but　　 it is all kept there in the storehouse of the human mind.

　　     Earlier scientists thought that the power of one's brain 14 weaker　　 and weaker 15 one grew older. But it is now thought that it is not　　 true. As long as the brain 16 plenty of exercise it keeps its power.　　 It has been established (证实) that an old person who 17 active in the　　 mind has a 18 mind than a young person who has only done physical　　 work without using 19 of his brain. It is now thought that the more　　 work we give our brains, 20 work they are able to do.　　 　　

(1)  A. Since    B. From    C. During    D. At

[    ]

(2)  A. injured　　　　  B. are injured   

   C. were injuring    D. were injured   

[    ]

(3)  A. different job　　   B. a different job   

   C. a different work    D. a piece of different job

[    ]

(4)  A. has found    B. has found out   

  C. found out    D. has been found out   

[    ]

(5)  A. that    B. which    C. what    D. how

[    ]

(6)  A. there has been   B. there was   

   C. there have been  D. there were   

[    ]

(7)  A. do      B. to do    C. done    D. doing

[    ]

(8)  A. discovered　　   B. have discovered

    C. will discover    D. had discovered   

[    ]

(9)  A. such    B. though    C. as      D. that

[    ]

(10)  A. are taken place B. take place

  C. will take place D. have taken place   

[    ]

(11)  A. can remember    B. will remember

  C. should remember D. must remember   

[    ]

(12)  A. for    B. at    C. to     D. on  

[    ]

(13)  A. see    B. saw    C. had seen    D. seen

[    ]

(14)  A. get    B. got    C. getting    D. was getting   

[    ]

(15)  A. which    B. as    C. with    D. during

[    ]

(16)  A. gives    B. has been given    C. is given    D. is giving      

[    ]

(17)  A. has always been   B. has never been

  C. always is    　　 D. has always been in     

[    ]

(18)  A. fast    B. faster    C. quick    D. quicker   

[    ]

(19)  A. few    B. many    C. much    D. greatly   

[    ]

(20)  A. the much    B. the most    C. more    D. the more   

[    ]

完形填空

阅读下面短文，掌握其大意，然后从每小题所给四个选项中，选出一个最佳答案。

　　Do you know how our brains work?

　　During the 19th century scientists found that when 1 parts of the brain of a man were 2 , he would lose the 3 to do certain things. And so people 4 that each of the brain does a different 5 . But modern people research has found out that this is not so, for it is not easy to say 6 what each part of the brain does.

　　In the 7 fifty years there has been a great increase in the amount of research 8 on the brain. Chemists and biologists have 9 that the way the brain works is not so 10 as people in general may think. 11 tell us that 100, 000 chemical changes take place in the brain every, second. Some recent research also 12 that we can remember everything that happens to us. We may not be able to recall the things we've heard and seen, 13 it is all kept there in the storehouse of the human being.

　　Earlier scientists thought the power of one's brain got weaker and weaker as one grew 14 . But it is now thought that it is not 15 . As long as the brain. is 16 plenty of exercise it keeps its ability. It has been 17 that an old person who has always been active in the mind has a 18 mind than a young person who has only done 19 work without using much of his brain. It is now 20 that the more work our brains work, the more work they are able to do.

1．

[　　]

2．

[　　]

3．

[　　]

4．

[　　]

5．

[　　]

6．

[　　]

7．

[　　]

8．

[　　]

9．

[　　]

10．

[　　]

11．

[　　]

12．

[　　]

13．

[　　]

14．

[　　]

15．

[　　]

16．

[　　]

17．

[　　]

18．

[　　]

19．

[　　]

20．

[　　]