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 allnighter on average had higher grades than those who had. The survey found tho
se 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 BehavioralSleepMedicine.
“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 allnighters 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 24hour 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 allnighter |
| B．pulling an allnighter leads to sleep problems |
| C．Thacher's doubt about allnighters |
| D．allnighters 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. |
Death is natural, but do you have any idea of the process of dying? Modern scientists divide the process of dying into two phases --- clinical or temporary death and biological death．Clinical death occurs when the vital organs, such as the heart or lungs, have ceased to function, but have not suffered permanent damage．The organism can still be revived(复活)．Biological death occurs when changes in the organism lead to the “breaking up” of vital cells and tissues．Death is then unchangeable and final．
Scientists have been seeking a way to prolong the period of clinical death so that the organism can remain alive before biological death occurs．The best method developed so far involves cooling of the organism, combined with narcotic sleep．By slowing down the body’s metabolism(新陈代谢), cooling delays the processes leading to biological death．
To illustrate how this works, scientists performed an experiment on a six-year-old female monkey called Keta． The scientist put Keta to sleep with a narcotic． Then they surrounded her body with ice-bags and began checking her body temperature．When it had dropped to 28 degrees the scientists began draining blood from an artery．The monkey’s blood pressure decreased and an hour later both the heart and breathing stopped: clinical death set in．For twenty minutes Keta remained in this state．Her temperature dropped to 22 degrees．At this point the scientists pumped blood into an artery in the direction of the heart and started artificial breathing．After two minutes Keta’s heart became active once more．After fifteen minutes, spontaneous(自发的)breathing began, and after four hours Keta opened her eyes and lifted her head． After six hours, when the scientists tried to give her a penicillin injection, Keta seized the syringe and ran with it around the room．Her behavior differed little from that of a healthy animal．For a person who suffers from the clinical death, _________．
| A．his most important organs are damaged． |
| B．he still has the possibility of getting back to life． |
| C．he can not avoid final death． |
| D．he is still very much alive |
Scientists try to make the time of clinical death longer in order to __________．
| A．slow down the body’s metabolism． |
| B．bring vital cells and tissues back to active life． |
| C．cool the organism． |
| D．delay the coming of biological death． |
How did the scientists put Keta into clinical death?
A． By putting her to sleep, lowering her temperature and draining her blooD．
B． By surrounding her body with ice-bags and draining her blood．
C． By lowing her blood pressure and stopping her heart from beating．
D． By draining her blood, lowering her blood pressure and stopping her breathing． All of the following indicate that the monkey has almost restored to her original physical state except the fact that__________．
| A．her heart beat again． |
| B．she regained her normal breath． |
| C．she rejected a penicillin injection． |
| D．she acted as lively as a healthy monkey． |
阅读下列短文，从每题所给的四个选项中（A、B、C和D），选出最佳选项，并在答题卡上将该项涂黑。
When Charles Stratton was five, he stopped growing． His mother took him to see the famous showman, P．T．Barnum． Mr．Barnum thought a small person would be the perfect addition to his show．He hired Charles' parents along with him, and they traveled the world together．
He gave the two-foot-tall Charles a name, General Tom Thumb．He taught Tom how to sing, dance, act and tell jokes． When he felt Tom was ready to perform on stage, he made up ads．To stir up great interest, he said that Tom was eleven years old and had come from England．
During the show, Tom fought battles pretendedly with tall people．He also danced upon a wooden plate held by a person who was eight feet tall．Tom's act was very popular and brought in a lot of money．By the time Tom was an adult, he had grown very rich．He had become a billionaire at the age of twenty five．
Fortunately for Tom, Mr．Barnum added more little people to his show, and Tom became lucky in love as well．One of the little people was Lavinia Warren, a schoolteacher．Tom was able to win her love, and they married．
The ceremony and reception were the talk of the town．They were attended by many rich and famous people and by about 2000 guests．Crowds filled the streets of New York to have a look at their tiny wedding marriage．The couple even met with President Abraham Lincoln on their honeymoon just before going to live in Tom's house in Connecticut．
Their wedding, which took place during the Civil War, provided a welcome escape from the sad problems of war．Not willing to let this bit of sunshine fade, communities throughout the country sponsored "Tom Thumb" weddings．In these weddings, small boys and girls, all dressed up, went through marriage ceremony for fun．The underlined words "talk of the town" means________．
| A．it was in the newspaper |
| B．it was the most popular topic |
| C．people spread bad rumors about it |
| D．it was discussed in a city meeting |
What does the author think about Tom's wedding?
| A．Tom and Lavinia were stupid． |
| B．People gave it too much of their attention． |
| C．It was funny and ridiculous． |
| D．It helped people cheer up in a dark time． |
What is the main idea of the last paragraph?
| A．Weddings always make people feel full of sunshine． |
| B．People are always disappointed during war time． |
| C．Entertainment can serve an important purpose． |
| D．People should be married when they are small children． |
In 1826, a Frenchman named Niepce needed pictures for his business ．But he was not a good artist ．So he invented a very simple camera ．He put it in a window of his house and took a picture of his garden ．That was the first photo．
The next important date in the history of photography (摄影术) was in 1837．That year, Daguere, another Frenchman ,took a picture of his reading room ．He used a new kind of camera in a different way．In his picture you could see everything very clearly, even the smallest thing．This kind of photo was called a Daguerreotype．
Soon, other people began to use Daguerre’sway．Travelers brought back wonderful photos from all around the world ．people took pictures of famous buildings, cities and mountains．
In about 1840, photography was developed ．Then photographers could take picture of people and moving things ．That was not simple ．The photographers had to carry a lot of films and other machines．But this did not stop them ,for example, some in the United States worked so hard．
Mathew Brady was a famous American photographer．He took many pictures of great people ．The picture were unusual because they were very lifelike(栩栩如生的)
Photographers also became one kind of art by the end of the 19th century ．Some photos were not just copies of the real world ．They showed feelings, like other kinds of art．The first photo taken by Niepce was a picture of ____________
| A．his business |
| B．his house |
| C．his garden |
| D．his window |
The Daguerrotype was____________．
| A．a Frenchman |
| B．a photographer |
| C．a kind of camera |
| D．a kind of picture |
If a photographer wanted to take pictures of moving things in the year of 1840, he had to_________．
| A．watch lots of films |
| B．buy an expensive camera |
| C．stop in most cities |
| D．take many films and something else with him |
You can call Zhang Ying if you want to _________________．
| A．sell a bike |
| B．buy a bike |
| C．have your bike repaired |
| D．borrow a bike |
If you want to find a job, and you can speak English, you can call ____________
| A．843-429065 |
| B．228-940605 |
| C．843-316065 |
| D．422-389506 |
One of the reasons why Li Ming wants someone to share his room is that __________．
| A．he wants to live near the campus |
| B．he wants to improve his English |
| C．he wants his washer, dryer and kitchen to be used |
| D．he wants someone to use his kitchen |
Robert Waller wishes to rent a room__________________．
| A．near the school |
| B．far away from the school |
| C．inside the school |
| D．outside the city |
The child of today owes much of its pleasant school life to the work of Maria Montessori and others who felt as she did．
Maria Montessori was born in 1870 in northern Italy．Both her parents were well educated．
While Maria was a student, she took great interest in the study of the particular nature of the child's mind． It came to her that small children should have freedom to learn．
Maria became a doctor and a professor at Rome University．In 1907, after working with backward students, she was given a chance to try out her ideas on children．There were sixty children, aged three to six, in the Children's House．The rooms were bright and colorful．Maria let the children make their own choice of what they wanted to do and work with their own speed． They became busy, peaceful and happy．
Maria Montessori was one of the world's great teachers．She traveled in Europe, America and Far East．She thought that true education, providing(提供) for the real needs of the child, would produce wise and happy grown-ups and therefore a peaceful world． Her original way of education has changed our whole idea of what childhood is．
Maria Montessori died in Holland at the age of eighty-two．The short passage is mainly about_________．
| A．the education of backward students |
| B．a new idea of education |
| C．the importance of proper education |
| D．the life of Maria Montessori |
Maria traveled a lot in the world to ________．．
| A．teach the backward students |
| B．enjoy her life in real nature |
| C．spread her ideas of teaching |
| D．study the situation of education |
In what way did Maria teach the children in the Children's House?
| A．She taught them the best way of learning well． |
| B．She let them learn in a very pleasant way． |
| C．She taught them by showing them how to do things． |
| D．She just let them choose the most interesting subjects． |
We learn from the passage that ________．
| A．Maria left her homeland in order to study abroad |
| B．Maria didn't get married |
| C．Maria's own parents were her teachers |
| D．Maria fully understood the child's mind |