(Being late for a party)

- Bob, what’s the matter? You look pale. Are you sick?

- 　　　51　　　

- Sit down. Let me get you a glass of water.　　 52　　　

- Not quite, but almost. I was crossing the street just now and was almost hit by a car. Fortunately, I jumped back in time.

- How awful(可怕)! 　　　53　　　

- Before I realized what had happened, the car was gone.

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- I agree. I won’t forget this for a long time.

- 　　　55　　　

- Yes. From now on I’ll be more careful when I cross the street since there are dangerous drivers like that one on the road.

A. Did you have a headache?

B. I just had a terrible experience.

C. I won’t cross the street from now on.

D. Drivers like that should have their licences taken away from them.

E. Did you have an accident?

F. I’m sure you won’t.

G. I hope you got the number of the car so you can report this man to the police.

　Do you know how our brains work?

　During the 19th century scientists found that when 16 parts of the brain of a man were 17 , he would lose the 18 to do certain things. And so people 19 that each of the brain does a different 20 . But modern people research has found out that this is not so, for it is not easy to say 21 what each part of the brain does.

　In the 22 fifty years there has been a great increase in the amount of research 23 on the brain. Chemists and biologists have 24 that the way the brain works is not so 25 as people in general may think. 26 tell us that 100, 000 chemical changes take place in the brain every, second. Some recent research also 27 that we can remember everything that happens to us. We may not be able to recall the things we've heard and seen, 28 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 29 . But it is now thought that it is not 30 . As long as the brain. is 31 plenty of exercise it keeps its ability. It has been 32 that an old person who has always been active in the mind has a 33 mind than a young person who has only done 34 work without using much of his brain. It is now 35 that the more work our brains work, the more work they are able to do.

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