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What most commonly occurs in REM sleep?A.Lucid dreams.B.Nightmares.C.Daymares.D.Indistinct
What most commonly occurs in REM sleep?
A.Lucid dreams.
B.Nightmares.
C.Daymares.
D.Indistinct dreams.
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What most commonly occurs in REM sleep?
A.Lucid dreams.
B.Nightmares.
C.Daymares.
D.Indistinct dreams.
What is the most alarming consequence of the fast growing population?
A.Species are dying out at an unnatural high speed.
B.Living areas for wildlife are disappearing rapidly.
C.The global weather is becoming warmer.
D.All kinds of natural resources are draining.
That is the theory, but psychologists have found that lie detectors are simply not【C14】______. Since most physical changes are the same across【C15】______emotions, lie detectors cannot tell【C16】______you are feeling angry, nervous or excited.【C17】______people may be tense and nervous【C18】______the whole procedure. They may react physiologically to a certain word("bank")not because they robbed it, but because they recently used a bad check. In either【C19】______, the machine will record a "lie" .
On the other hand, some practiced liars can lie【C20】______hesitation, so the reverse mistake is also common.
【C1】
A.fixed
B.designed
C.known
D.produced
That is the theory, but psychologists have found that lie detectors are simply not【C14】______. Since most physical changes are the same across【C15】______emotions, lie detectors cannot tell【C16】______you are feeling angry, nervous or excited.【C17】______people may be tense and nervous【C18】______the whole procedure. They may react physiologically to a certain word("bank")not because they robbed it, but because they recently used a bad check. In either【C19】______, the machine will record a "lie" .
On the other hand, some practiced liars can lie【C20】______hesitation, so the reverse mistake is also common.
【C1】
A.fixed
B.designed
C.known
D.produced
M: In England more and more people go jogging in the morning, but not so early. Actually at five o'clock in the morning everyone is still asleep.
Q: What do most Englanders usually do at five o'clock in the morning?
(16)
A.They usually go jogging.
B.They usually go to the parks to do their exercises.
C.They usually do Taijiquan.
D.They are still asleep.
A.minimal
B.maximal
C.mimimum
D.maximum
Which form. other than oral speech could be most commonly used among blind people? ()
A.Picture signs.
B.Braille.
C.Body language.
D.Signal flags.
In relationship banking the emphasis is on establishing a long-term multiple-service relationship; on satisfying the totality of the client's financial service needs; and on minimizing the need or desire of clients to splinter their financial business among various institutions.
Implicit within any definition of relationship banking is recognition that the financial-service requirements of one individual or relatively homogeneous group. A successful relationship banking program is, therefore, dependent in a large part on the development of a series of "financial-serviced packages": each designed to meet the needs of identifiable homogeneous groups.
Another dimension of relationship banking is the development of highly personalized relationships between employee and client. In most financial institutions today the client is serviced by any employee who happens to be free at the time, regardless of the nature of the transaction. Personalized relation ships are therefore difficult to establish. In a full relationship banking pro gram, however, the client knows there is one individual within the institution who has intimate knowledge of the client's requirements and preferences regarding complex transactions. Over time, the client develops a high level of confidence in this employee. In short, a personalized relationship evolves between client and employee.
With what subject is the passage mainly concerned?
A.The decline of the financial-service industry.
B.Variety within financial services.
C.A way of making banking more personal.
D.Increasing everyday banking transactions.
There are many known "Living Fossils": Coelacanth, Sea Cucumbers, Sea Urchins, Lobsters, Sea Stars. The common ones like lobsters and sea urchins are not really looked on as anything amazing. They've been around for thousands of years or more, and axe easily accessible to us. What if they weren't accessible and yet still existed? We would label them extinct. The discovery of a live Coelacanth, a fish long believed extinct, challenged some scientists' long-held beliefs on extinction. There have been recent discoveries Of incredibly large squid, and deep-sea fish never before seen by scientists.
In the 1960s the U.S. Navy set up underwater microphones around the world to track Soviet submarines. The network, known as the Sound Surveillance System, still lies deep below the ocean's surface in a layer of water known as the "deep sound channel'. The temperature and pressure of the channel allow sound waves to travel undisturbed. NOAA's Acoustic Monitoring Project has been using the Sound Surveillance System to listen for changes in ocean structure like ocean currents or volcanic activity. Most of the sounds recorded are common and of no concern. One sound, identified in 1977 by U.S. Navy "spy" sensors, was odd. It was obviously a marine animal but the call was more powerful than any of the calls made by any other reported sea creature. It was too big for a whale. Could it be a deep-sea monster? One possibility was a giant squid, but no one is sure. It was named "Bloop". Could it be Megalodon? If Megalodon is still alive down in the bottom of the ocean, we may some day soon discover it. Then what? Deep sea diving will never be the same, that's for sure!
The following is commonly known EXCEPT ________.
A.Megalodon, the largest shark, is extinct
B.Megalodon is not extinct but just out of reach
C.Megalodon was 52 feet long and had a jaw 7 or more feet wide
D.Megalodnn lived between several million years ago
听力原文:W: Look at Susan over there. She's talking nonstop.
M: I know. She's always passing on the latest rumors about who's not talking to whom and who's bought a most expensive dress.
Q: What do we know about Susan?
(18)
A.She has bought a very expensive dress.
B.She is talking proudly about her new dress.
C.She is talkative about other people's business.
D.She does not talk to the woman.
Antiseptics(杀菌剂) have saved countless lives, but they are most effective when the bacteria they are attacking are individual cells in suspension. Once bacteria have attached themselves to solid surfaces and formed films, they are far harder to eradicate with standard disinfectants. Bacterial pollution of medical devices is a particular problem, as those devices are then used on people whose immune systems may be in less than best condition. Surgical instruments may be treated with ultraviolet light, but that is not appropriate for everything. The result is that infections arising from bacteria attached to surfaces in clinics and hospitals are reckoned to cause up to 1.4m deaths per year.
In order to develop a better method of disinfection, a team led by David Whitten of the University of New Mexico and Kirk Schanze of the University of Florida set out to design the equivalent of a mousetrap for bacteria. The device they came up with is an empty capsule five microns across. It is made of alternating layers of two polymers'(聚合体) ,one of which is positively charged, and the other negatively so. These opposite charges serve to hold the capsule together.
The polymers in question also absorb light in a way that is likely to transfer the absorbed energy to nearby oxygen molecules (氧分子) to create what is known as singlet oxygen, a particularly reactive form. of the element that would kill any bacteria inside the capsule.
To test this idea, the two researchers ran a series of experiments in which they exposed their newly built microcapsules to Pseudomonas aeruginosa, a fatal bacterium commonly, found in hospitals, and also to Cobetia marina, a bacterium that frequently adheres to ships and marine equipment, causing dirt. They found that in both cases the microcapsules attracted and captured bacteria that were nearby. After one hour of exposure to light, they report in a forthcoming issue of Applied Materials & Interfaces, the capsules killed more than 95% of the bacteria used in the study.
What kills the bacteria is clear: it is the singlet oxygen. What is attracting them into the microcapsules, though, is not well understood. The researchers infer that the positive electric charge may have the function of attracting bacteria, since many bacteria are negatively charged and would thus be attracted to the polymer in question. Alternatively, because both bacteria and polymers are repelled by water they may be pushed together by this joint repulsion. However it works, the result is what Dr. Whitten describes as a micro-sized Roach Motel ("Bacteria check in, but they don't check out"). If the idea can be scaled up, it may prove a useful weapon in the fight against hospital-caused infection and marine-dirt alike.
According to the passage, the antiseptics will be less effective when ______.
A.the bacteria are floating in individual cells
B.the bacteria pollute the medical devices in the hospital
C.the bacteria adhere to solid surfaces, wrapped by films
D.the disinfectants are not so standard