So you must learn to pick and choose,and you must also learn to look here and there in a library like a camel eating grass on the grassland.

　　If you watch him eating,you will see that although he is supposed to be one of the most stupid animals in the world,

　　he has at least one of the qualities of the cultured man,the power to pick and choose.

　　A student looking for mental food in the library should use the camel as his model.

　　Questions 11 to 13 are based on the passage you have just heard.

　　11.What's the writer's attitude towards reading?

　　12.What's the similarity between a camel and a cultured man?

　　13.Which of the following is true according to the passage?

　　Passage Two

　　Scientists have discovered a lake in southwest Florida that is thousands of years old.

　　eries made there have led scientists to believe this is one of the most important areas for studies of ancient man,animals,and climate in North America.

　　At the bottom of the lake,they have found bones of now extinct animals that were killed and cooked for food by humans over 12,000 years ago.

　　A hunting device was discovered___one of the oldest ever found.

　　This great quantity of human remains and plant and animal fossils gives the scientists a rare chance to study combinations of climate,

　　and ecology that prepared the way for human survival in America.

　　The lake is at least 240 feet deep at one point.

　　It is rich in minerals and contains very little oxygen.

　　This has helped to preserve specimens in the lake that would usually have been destroyed.

　　Because several types of animals were found that are now extinct,it raises several questions among scientists..

　　Did these animals die of natural causes,or were they hunted into extinction by human beings?

　　Questions 14 to 16 are based on the passage you have just heard.

　　14.Which of the following was not discovered at the bottom of the lake?

　　15.Why were the specimens preserved so well in the lake?

　　16.What does the question at the end of the passage imply?

　　Passage Three

　　When I was walking down the street the other day,I happened to notice a small brown leather wallet lying on the sidewalk.

　　I picked it up and opened it to see if I could find out the owner's name.

　　There was nothing inside it except some change and an old photograph

　　a picture of a woman and a young girl about twelve years old,who looked like the woman's daughter.

　　I put the photograph back and took the wallet to the police station.

　　That evening I went to have dinner with my aunt and uncle.

　　They had also invited a young woman so that there would be four people at the table.

　　Her face was familiar.I was quite sure that we had not met before,but I couldn't remember where I had seen her.

　　In the course of conversation,however,the young woman happened to mention that she had lost her wallet that afternoon.

　　All at once I realized where I had seen her.

　　She was the young girl in the photograph,although she was now much older.

　　She was very surprised,of course,when I was able to describe her wallet to her.

　　Then I explained that I had recognized her from the photograph I had found in the wallet.

　　My uncle insisted on going to the police station immediately to claim the wallet.

　　As the police sergeant handed it over,he said that is was amazing that I had not only found the wallet,

　　but also the person who had lost it.

　　Questions 17 to 20 are based on the passage you have just heard.

　　17.Why did the speaker open the wallet?

　　18.What did the speaker do with the wallet?

　　19.When did the speaker find the owner of the wallet?

　　20.Who was the owner of the wallet?