A unique laboratory at the University of Chicago i...

第1题

听力原文：A unique laboratory at the University of Chicago is busy only at night. It is a d

听力原文： A unique laboratory at the University of Chicago is busy only at night. It is a dream laboratory where researchers are at work studying dreamers. Their findings have revealed that everyone dreams from three to seven times a night, although in ordinary life a person may remember none or only one of his dreams.

While the subjects--usually students--sleep, special machines record their brain waves and eye movements as well as the body movements that signal the end of a dream. Surprisingly, all subjects sleep soundly.

Observers report that a person usually fidgets before a dream. Once the dream has started, his body relaxes and his eyes become more active, as if the curtain had gone up on a show. As soon as the machine indicates that the dream is over, a buzzer wakes the sleeper. He sits up, records his dream, and goes back to sleep--perhaps to dream some more.

Researchers have found that if the dreamer is wakened immediately after his dream, he can usually recall the entire dream. If he is allowed to sleep even five more minutes, his memory of the dream will have faded.

(30)

A．Content of dreams.

B．Dreamers while they dream.

C．The meaning of dreams.

D．The process of sleeping.

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第2题

听力原文：A unique laboratory at the University of Chicago is busy only at night. It is a d

听力原文： A unique laboratory at the University of Chicago is busy only at night. It is a dream laboratory where researchers are at work studying dreamers. Their findings have revealed that everyone dreams from three to seven times a night, although in ordinary life a person may remember more or only one of his dreams.

While the subjects—usually students are asleep, special machines record their brain waves and eye movements as well as the body movements that signal the end of a dream. Surprisingly, all subjects sleep soundly.

Observers report that a person usually fidgets before a dream. Once the dream has started, his body relaxes and his eyes become more active, as if the curtain had gone up on a show. As soon as the machine indicates that the dream is over, a buzzer wakens the sleeper. He sits up, records his dream, and goes back to sleep—perhaps to dream some more.

Researchers have found that if the dreamer is wakened immediately after his dream, he can usually recall the entire dream. If he is allowed to sleep even five more minutes, his memory of the dream will have faded.

(30)

A．The researchers in Chicago.

B．The doctors in Chicago.

C．The medical students at the University of Chicago.

D．The researchers in a dream lab at the University of Chicago.

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第3题

听力原文： A unique laboratory at the University of Chicago is busy only at night. It is a

dream laboratory where researchers are at work studying dreamers. Their findings have revealed that everyone dreams from three to seven times a night, although in ordinary life a person may remember none or only one of his dreams. While the subjects, usually students, are asleep, special machines record their brain waves and eye movements as well as the body movements that signal the end of a dream. Surprisingly, all subjects sleep soundly. Observers report that once the dream has started, one's body relaxes and his eyes become more active, as if the curtain had gone up on a show. As soon as the machine indicates that the dream is over, a buzzer wakens the sleeper. He sits up, records his dream, and goes back to sleep, perhaps to dream some more. Researchers have found that if the dreamer is wakened immediately after his dream, he can keep the dream. If he is allowed to sleep even five more minutes, his memory of the dream will have faded.

What are the researchers at the University of Chicago studying？

A．Different kinds of dreams.

B．The content of dreams.

C．Dreamers while they dream.

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第4题

Since its founding at the midpoint of the nineteenth century, the Massachusetts Institute

of Technology has been a unique institution. Great institutions of higher education are grounded in and learn from the past; interact to some degree with the world of the present; and aspires to influence the future. MIT is no exception, but in large measure, the institutes uniqueness derives from the unusual extent of our engagement with the present and dedication to the future. We apply our talents to problems posed by contemporary society—by its institutions of industry, commerce, arts, healing, and politics. Yet our minds are even more firmly engaged in shaping the future. This somewhat singular approach to our mission has enabled us, over the years, to define new forms of research and scholarship, and to establish new paradigms for education. MIT students, faculty, and staff are deeply engaged in the process of learning in the classroom, in the laboratory, and from each other. There is an exhilarating sense of being at the cutting edge in all that we do. You will find MIT to be intense and demanding, yet the atmosphere here is highly collegial. You will be a very important part of one of the worlds great institutions of learning and exploration.

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第5题

听材料，回答下列各题： A unique laboratory at the University of Chicago is busy only at nig

ht. It is a dream laboratorywhere researchers are at work studying dreamers. Their findings have (26)___________ that everyonedreams from three to seven times a night; although in (27)___________life a person may remember none oronly one of his dreams. What people dream usually (28)___________ !heir waking life experiences, whichare mostly visual in nature. Dream is (29) __ to be a passive event, a (30)___________ that peopleexperience but do not (31) __ control. While the subjects - - usually students___________sleep, specialmachines record their (32) __ waves and eye movementss well as the body movements thatsignal the end of a dream. Surprisingly, all subjects sleep (33) . Observers report that a personusually feels anxious before a dream. Once the dream has started, h is body relaxes and his eyes becomemore active, as if the curtain had gone up on a show. As soon as the machine indicates that the dreamis over, the sleeper is weakened by the researcher. He (34)___________, records his dream, and goes backto sleep___________perhaps to dream some more. Researchers have found that if the dreamer is wakened afterhis dream (35)___________, he can usually recall the entire dream. If he is allowed to sleep even five moreminutes, his memory of the dream will have faded. 第(26)题___________

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第6题

Section BDirections: There are 2 passages in this section. Each passage is followed by som

Section B

Directions: There are 2 passages in this section. Each passage is followed by some questions or unfinished statements. For each of them there are four choices marked A, B, C and D. You should decide on the best choice.

The dancers stand motionless at their position and the room grows silent. But as the music starts, they began to move, bending, turning and waving their fans gracefully as they perform. a traditional Japanese dance. Yoshihiro Kuroki watches in silence, occasionally making notes. But as the dance ends, he beams with happiness. The performance has been flawless.

There have been many performances of traditional Japanese dances over the centuries, but this one is unique, because it is performed not by human dancers but by robots. And the performance takes place not in a dance studio but in a laboratory of Sony Corp.'s Entertainment Robot Co. in Shinagawa, Japan, where Kuroki is general manager. He is the mastermind behind a series of even more capable humanoid entertainment robots, starting with the Sony Dream Robot, or SDR, in 1997, up to the current QRIO in 2003.

These delightful machines are only 58 cm tall, about the size of a newborn infant, weigh about 7 kg, and move with 38 degrees of freedom, each with its own servomotor (辅助马达).

QRIO's predecessor, the SDR4X, announced in 2002, can walk, dance, sing, speak, recognize faces, and understand continuous speech. Each robot has two charge-coupled-device cameras to detect color and position and can locate a colored hall, move toward it, and kick it into a goal. It also has contact sensors in several joints to avoid pinching real human fingers. Seeing the robot perform, it is difficult to remember that there is no sentience (知觉) behind those glass eyes.

Which of the following is the most suitable title of this passage？

A．New Entertainment Robots Produced in Japan.

B．QRIO--the Robot Dancers.

C．Robots--Man's Best Friend.

D．An Extraordinary Performance in Sony's Lab.

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第7题

Part ADirections: Read the following four texts. Answer the questions below each text by c

Part A

Directions: Read the following four texts. Answer the questions below each text by choosing A, B, C or D. (40 points)

A tiny but powerful new lightweight drill has been developed by space scientists and engineers. It expands the fields in which drilling has been difficult in the past. The new drill could be used in the drilling required during surgical or diagnostic procedures involving bones, or when extracting heart pacemaker leads. Future space missions could include drilling for rock and soil samples, using only lightweight landing vehicles with robotic arms.

The color photo shows the new driller penetrating a sandstone while the drill is held only from its power cord. Relatively small vertical force is used in this application—a factor that will be useful when the drill is used in future space missions and weight needs to be kept to a minimum. The drill is driven by piezoelectric devices, which have only two moving parts but no gears or motors. Piezoelectrics are materials that change their shape under the application of an electrical field. The drill can be adapted easily to operations in a range of temperatures from extremely cold to very hot. Unlike conventional rotary drills, the drill can drill even the hardest rocks without significant weight on the drilling bit.

"The drill is a device that offers exciting new capabilities for space exploration in future NASA missions," said Dr. Yoseph Bar-Cohen, who leads NASA's Jet Propulsion laboratory's Nondestructive Evaluation and Advanced Actuator Technologies unit. "Besides the immediate benefits of the technology to NASA, it is paving the way for other unique mechanisms that are being developed in our laboratory and elsewhere," he said.

The demonstration unit pictured in the color photograph weighs about 0.7 kilograms, which is sufficient to drill 12 millimeter diameter holes in rocks using less than 10 watts of power. Comparable rotary drills usually require the application of 20 to 30 times greater pushing force and more than three times the power.

Other advantages to the drill are no drill noise and no drill movement across the surface on start-up. The drill body will not rotate, the speed does not decrease with time and the bit does not require sharpening. The bit can be guided by hand safely during operation. The drill can drill holes in different cross-sections, such as square and round.

Said Dr. Yoseph Bar-Cohen, "Thanks to the development of technology associated with this drill, new devices can be made to be small and lightweight, to consume little power and to exhibit a high standard of reliability."

At first, the new lightweight drill has been invented to

A．be used in space missions.

B．pull out the heart pacemaker leads.

C．replace the conventional rotary drill.

D．drill the bones during procedures of medical treatment.

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第8题

The FBI （Federal Bureau of Investigation) had found a new way to catch criminals by lookin

The FBI (Federal Bureau of Investigation) had found a new way to catch criminals by looking at their jeans. Scientists from the bureau reported at last weeks meeting of the American academy of Forensic Sciences in San Francisco that every pair of blue jeans has a unique wear pattern. The FBI has already used this "bar code "to place a suspect at the scene of a crime.

Richard Vorder Bruegge, a scientist at the FBI laboratory in Washington D. C. , and his colleagues developed the technique while helping to identify suspects who were robbing banks and setting off bombs ii1 Washington In April 1996, one of the gang was caught on film . He was wearing a mask, but part of his trousers was visible.

When the photograph was enlarged Vorder Bruegge noticed light and dark lines running across the seam of the man' s jeans. His team found that the pattern originated from slight imperfections introduced when the trousers were made. Workers sew the seams by pushing the fabric through a machine, and the irregularity of that motion stretches and binds the fabric . The colored layer of cotton in the raised portion is worn away, creating white bands.

The patches are more striking on jeans than other types of trousers because they are often al- lowed to become extremely worn, "People just keep wearing them, "says Vorder Bruegge.

The FBI analyzed the jeans of suspects in the Washington case. One pair had a pattern with over two dozen features that matched the jeans Vorder Bruegge's team photographed. At the tri- al, the defense called in a used jeans exporter as an expert witness who claimed the patterns were common to all jeans. He showed the court 34 similar pairs, but in each case the FBI could distinguish them from the accused . The suspect was convicted.

"To place a suspect at the scene of a crime" at the end of the first paragraph means that theFBI

A．has been able to prove a suspect guilty

B．will lead a suspect to the spot of a crime

C．were at the scene with the suspect.

D．caught the suspect on the spot

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第9题

More About Alzheimer's Disease Scientists have developed skin tests that may be used in th

More About Alzheimer's Disease

Scientists have developed skin tests that may be used in the future to identify people with Alzheimer's disease and may ultimately allow physicians to predict who is at risk of getting this neurological disorder.

The only current means of diagnosing the disease in a living patient is a long and expensive series of tests that eliminate every other cause of dementia.

"Since Alois Alzheimer described the disease nearly a century ago, people have been trying to find a way to accurately diagnose it in its early stages," said Patricia Grady, acting director of the National Institute of Neurological Disorders and Stroke in Bethesda, Maryland. "This discovery, if confirmed, could prove a big step forward in our efforts to deal with and understand the disease."

Alzheimer's is the single greatest cause of mental deterioration in older people, affecting between 2.5 million and 4 million people in the United States alone. The devastating disorder gradually destroys memory and the ability to function, and eventually causes death. There is currently no known treatment for the disease.

Researches discovered that the skin cells of Alzheimer's patients have defects that interfere with their ability to regulate the flow of potassium in and out of the cells. The fact that the cell defects are present in the skin suggests that Alzheimer's results from physiological changes throughout the body, and that dementia may be the first noticeable effect of these changes as the defects affect the cells in the brain, scientists said.

The flow of potassium is especially critical in cells responsible for memory formation. The scientists also found two other defects that affect the cells' supply of calcium, another critical element.

One test developed by researchers calls for growing skin cells in a laboratory culture and then testing them with an electrical detector to determine if the microscopic tunnels that govern the flow of potassium are open. Open potassium channels create a unique electrical signature.

A spokesman for the Alzheimer's association said that if the validity of the diagnostic test can be proven it would be important development, but cautioned that other promising tests for Alzheimer's have been disappointing.

The newly developed skin tests may be used in the future to allow doctors to ______.

A．cure those with Alzheimer's disease

B．discover the cause of Alzheimer's disease

C．predict who might get Alzheimer's disease

D．find the consequences of Alzheimer's disease

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A unique laboratory at the University of Chicago is busy only at night. It is a dream【C1】_