ALBANY，New York—Students who rely on working at night to improve their

grades might want to sleep on that strategy: A new survey in the US says those who never study all night have slightly higher grades than those who do.

A survey of 120 students at St.Lawrence University found that students who had never pulled an all??nighter on average had higher grades than those who had. The survey found those who did not study through the night had a grade point average of 3.2 compared to 2.95 for those who did.

The study, by assistant professor of psychology Pamela Thacher, is to be included in the January issue of Behavioral Sleep Medicine.

“It's not a big difference，but it's pretty striking, ” Thacher said, “I am primarily a sleep researcher and I know nobody thinks clearly at 4∶00 in the morning. You think you can do，but you can't.”

Many college students, of course, have inadequate or irregular sleep, for reasons ranging from excessive caffeine to poor time management.

“A lot of students were under the impression that all??nighters were a very useful tool for accomplishing work, and that caffeine intake was very useful in meeting deadlines and stuff like that, ”said Mr Chatani, who had a 3.4 grade point average last term.

Dr Howard Weiss, a physician at St.Peter's Sleep Center in Albany, said the study results made sense.

“Certainly that data is out there showing that short sleep duration absolutely interferes with concentration and performance on objective testing, ”he said.

“Some night owls do get good grades, of course，which may be explained by circadian (昼夜节律的，生理节奏的) rhythms, ”Weiss said, “Some people have different 24??hour body clocks from others, and may do better depending on classes and testing time.”

The purpose of the passage is to tell us 　　　　

  A. the bad effects of pulling an all??nighter

  B. pulling an all??nighter leads to sleep problems

  C. Thacher's doubt about all??nighters

  D. all??nighters influence students' grades

According to Thacher's study，around 4 o'clock in the morning is a time when 　　　　.

  A. one can think more clearly

  B. one has his/her best memory

  C. one can't learn efficiently

  D. one's brain falls into a period of deep sleep

What can we know from Dr Howard Weiss' words？

  A. Thacher's study is not convincing enough.

  B. He believes in Thacher's study.

  C. Thacher's study makes no sense.

  D. Thacher should take exceptions into consideration.

完形填空

阅读下面短文，从短文后所给各题的四个选项中选出能填入相应空白处的最佳选项。

　　Our plan was to drive into Cambridge, catch the 7:34 train to Liverpool Street Station, then to separate and meet again for lunch. Although we arrived at Liverpool Street Station at 10:30, Joan 1 that she would go to see the Crown Jewels in the Tower of London 2 we went shopping. It was only after her sister had 3 into the fog that my wife realized that we hadn't decided where we should 4 her for lunch. 5 I had our three tickets for the concert in my pocket, this was indeed a 6 . There seemed to be nothing we could do but take a taxi to the Tower of London. However, we didn't find her.

　　It was now one o'clock, and the concert would begin at 2:30.“Perhaps she'll 7 waiting outside the concert hall,”said my wife hopefully. By this time the fog was so thick that the road traffic had to 8 , and the only way to get there was 9 underground railway. Hand in hand we 10 our way along the road to where we thought the 11 station should be. An hour later we found Tower Hill Station.

　　By now it was far 12 late even to try to get to the concert hall before the performance began at 2:30. So we decided to 13 to Cambridge. It took seven long hours instead of two as usual to 14 that journey. 15 were we able to get any food and drink on the train. Tired and hungry we finally reached home at ten. 16 the door, we heard the sound of the telephone bell. It was Joan; she had seen the Crown Jewels, had managed to get another ticket for the concert, and had had a wonderful 17 at a restaurant near the hotel where she had decided to stay at night. Now she was 18 us to discover 19 we had had an equally 20 day.

1．

[　　]

A．hoped　　　　　　B．decided

C．suggested　　　　　D．wanted

2．

[　　]

A．during　　　　　B．when

C．since　　　　　　D．before

3．

[　　]

A．hidden　　　　　　B．run

C．disappeared　　　　D．entered

4．

[　　]

A．see　　　　　　B．meet

C．wait　　　　　　D．call

5．

[　　]

A．Though　　　　　B．When

C．Since　　　　　　D．For

6．

[　　]

A．chance　　　　　　B．subject

C．matter　　　　　　D．problem

7．

[　　]

A．mind　　　　　　B．forget

C．insist on　　　　　D．think of

8．

[　　]

A．finish　　　　　　B．begin

C．stop　　　　　　D．start

9．

[　　]

A．with　　　　　　B．on

C．by　　　　　　D．through

10．

[　　]

A．made　　　　　　B．pushed

C．found　　　　　　D．felt

11．

[　　]

A．nearby　　　　　　B．near

C．nearer　　　　　　D．nearest

12．

[　　]

A．too　　　　　　B．very

C．quite　　　　　　D．so

13．

[　　]

A．walk　　　　　　B．drive

C．ride　　　　　　D．return

14．

[　　]

A．do　　　　　　B．make

C．get　　　　　　D．have

15．

[　　]

A．So　　　　　　B．Hardly

C．Nor　　　　　　D．Thus

16．

[　　]

A．Opening　　　　　　B．Knocking at

C．Closing　　　　　　D．Going to

17．

[　　]

A．breakfast　　　　　　B．lunch

C．afternoon tea　　　　　D．dinner

18．

[　　]

A．asking　　　　　　B．thinking

C．ringing　　　　　　D．wanting

19．

[　　]

A．why　　　　　　B．how

C．where　　　　　　D．whether

20．

[　　]

A．busy　　　　　　B．successful

C．free　　　　　　D．sad

The famous director of a big and expensive movie planned to film a beautiful sunset over the ocean, so that the audiences could see his hero and heroine in front of it at the end of the film as they said goodbye to each other for ever. He sent camera crew out one evening to film the sunset for him.

　　The next morning he said to the men, "Have you provided me with that sunset? "

　　"No, Sir," the men answered.

　　The director was angry. "Why not? " he asked.

　　"Well, Sir, " one of the men answered, "we are on the east coast here, and the sun sets in the west. We can get you a sunrise over the sea, if necessary, but not a sunset."

　　"But I want a sunset!" the director shouted. "Go to the airport, take the next flight to the west coast, and get one. "

　　But then a young secretary had an idea. "Why don't you photograph a sunrise, " she suggested, "and then play it backwards? Then it'll look like a sunset."

　　"That's a very good idea! " the director said. Then he turned to the camera crew and said, "Tomorrow morning I want you to get me a beautiful sunrise over the sea. "

　　The camera crew went out early the next morning and filmed a bright sunrise over the beach in the middle of a beautiful bay（海湾）. Then at nine o'clock they took it to the director. "Here it is, Sir, " they said, and give it to him. He was very pleased.

　　They all went into the studio（摄影棚）. "All right, " the director explained, "now our hero and heroine are going to say goodbye. Run the film backwards so that we can see the 'sunset' behind them. "

　　The "sunset" began, but after a quarter of a minute, the director suddenly put his face in his hands and shouted to the camera crew to stop.

　　The birds in the file were flying backwards, and the waves on the sea were going away from the beach.

One evening, the director sent his camera crew out____.

　　A. to watch a beautiful sunset  B. to find an actor and an actress

　　C. to film a scene on the sea　　   D. to meet the audience

Why did the director want to send his crew to the west coast?

　　A. Because he changed his mind about getting a sunset   B. Because he was angry about his crew

　　C. Because it was his secretary's suggestion.　　   D. Because he wanted to get a scene of sunset

Which of the following is NOT true?

　　A. The crew had to follow the secretary's advice.

　　B. If you want to see a sunrise, the east coast is a place to go.

　　C. The camera crew wasn't able to film the scene the first day

　　D. The director ordered his crew to stop filming the "sunset"

The director wanted to film a sunset over the ocean because_____.

　　A. it went well with the separation of the hero and heroine

　　B. when they arrived at the beach it was already in the evening

　　C. it was more moving than a sunrise

　　D. the ocean looked more beautiful at sunset

After the "sunset" began, the director suddenly put his face in his hands____.

　　A. because he was moved to tears

　　B. as he saw everything in the film moving backwards

　　C. as the sunrise did not look as beautiful as he had imagined

　　D. because he was disappointed with the performance of the hero and the heroine

The famous director of a big and expensive movie planned to film a beautiful sunset over the ocean，so that the audiences could see his hero and heroine in front of it at the end of the film as they said goodbye to each other forever.He sent his camera crew out one evening to film the sunset for him.

　 The next morning he said to the men,“Have you provided me with that sunset？”

　 “No，sir,”the men answered.

　 The director was angry.“Why not?” he asked.

　 “Well,sir,”one of the men answered,“we’re on the east coast here，and the sun sets in the west.We can get you a sunrise over the sea，if necessary，but not a sunset.”

　 “But I want a sunset!”the director shouted.“Go to the airport，take the next flight to the west coast，and get one.”

　 But then a young secretary had an idea.“Why don’t you photograph a sunrise，” she suggested，“and then play it backwards? Then it’ll look like a sunset.”

　 “That’s a very good idea！” the director said.Then he turned to the camera crew and said，“Tomorrow morning I want you to get me a beautiful sunrise over the sea.”

　 The camera crew went out early the next morning and filmed a bright sunrise over the beach in the middle of a beautiful bay.Then at nine o’clock they took it to the director.“Here it is，sir，” they said，and gave it to him.He was very pleased.

　 They all went into the studio.“All right，” the director explained，“now our hero and heroine are going to say goodbye.Run the film backwards so that we can see the sunset behind them.”

　 The “sunset” began，but after a quarter of a minute，the director suddenly put his face in his hands and shouted to the camera crew to stop.

　 The birds in the film were flying backwards，and the waves on the sea were going away from the beach.

1.One evening，the director sent his camera crew out 　　　.

　 A.to film a scene on the sea

　 B.to find an actor and an actress

　 C.to watch a beautiful sunset

　 D.to meet the audience

　

2.Why did the director want to send his crew to the west coast?

　 A.Because he changed his mind about getting a sunset.

　 B.Because he was angry with his crew.

　 C.Because he wanted to get a scene of sunset.

　 D.Because it was his secretary’s suggestion.

　

3.The director wanted to film a sunset over the ocean because 　　　　.

　 A.it went well with the separation of the hero and heroine

　 B.when they arrived at the beach it was already in the evening

　 C.it was more moving than a sunrise

　 D.the ocean looked more beautiful at sunset

　

4.After the “sunset” began，the director suddenly put his face in his hands 　　　　.

　 A.because he was moved to tears

　 B.as he saw everything in the film moving backwards

　 C.as the sunrise did not look as beautiful as he had imagined

　 D.because he was disappointed with the performance of the hero and heroine

　

5.Which of the following is NOT true?

　 A.The crew had to follow the secretary’s advice (忠告).

　 B.If you want to see a sunrise，the east coat is the place to go.

　 C.The camera crew wasn’t able to film the scene the first day.

　 D.The director ordered his crew to stop filming the “sunset”.

 

Miss Gogers taught physics in a New York school. Last month she explained to one of her classes about sound, and she decided to test them to see how successful she had been in her explanation. She said to them,“Now I have a brother in Los Angeles. If I was calling him on the phone and at the same time you were 75 feet away, listening to me from across the street, which of you would hear what I said earlier, my brother or you and for what reason?”

　Tom at once answered,“Your brother. Because electricity travaels faster than sound waves.”“That’s every good,”Miss Gogers answered; but then one of the girls raised her hand, and Miss Gogers said.“Yes, Kate.”

　“I disagree,”Kate said.“Your brother would hear you earlier because when it’s 11 o’clock here it’s only 8 o’clock in Los Angeles.”

Miss Gogers was teaching her class_________.

A.how to telephone 　    B.about electricity 　 C.about time zone 　  D.about sound

Miss Gogers raised this question because she wanted to know whether______.

　A.it was easy to phone to Los Angeles

　B.her student could hear her from 75 feet away

　C.her students had a good command of her lesson about sound

　D.sound waves were slower than electricity

Tom thought that electricity was _________.

　A.slower than sound waves   　B.faster than sound waves

　C.not so fast as sound waves  　D.as fast as sound waves

Kate thought Tom was wrong because _______.

　A.clocks in Los Angeles showed a different time from those in New York

　B.electricity was slower than sound waves

　C.Tom was not good at physics at all

　D.Tom’s answer had nothing to do with sound waves

Whose answer do you think is correct according to the law of physics?

　A. Tom’s 　     　B. Kate’s 　　C. Bath A and B 　　D. Neither A nor B