单选题Students of the Berry School for Mountain Children helped pay for their education by doing part-time labor that pertained to their particular course of study.

单选题Mark's posture and attitude ______ boredom when the teacher was giving his instructions. A. transmitted B. delivered C. endowed D. implied

单选题This year's sterling depreciation, only a few aver, has no impact on the economy at large.

单选题When the hero returned home, his wife held out her arms and ______ him warmly.

单选题As Dr Samuel Johnson said in a different era about ladies preaching, the surprising thing about computers is not that they think less well than a man, but that they think at all. The early electronic computer did not have much going for it except a marvelous memory and some good math skills. But today the best models can be wired up to learn by experience, follow an argument, ask proper questions and write poetry and music. They can also carry on somewhat puzzling conversations. Computers imitate life. As computers get more complex, the imitation gets better. Finally, the line between the original and the copy becomes unclear. In another 15 years or so, we will see the computer as a new form of life. The opinion seems ridiculous because, for one thing, computers lack the drives and emotions of living creatures. But drives can be programmed into the computer's brain just as nature programmed them into our human brains as a part of the equipment for survival. Computers match people in some roles, and when fast decisions are needed in a crisis, they often surpass them. Having evolved when the pace of life was slower, the human brain has an inherent defect that prevents it from absorbing several streams of information simultaneously and acting on them quickly. Throw too many things at the brain at one time and it freezes up. We are still in control, but the capabilities are increasing at a fantastic rate, while raw human intelligence is changing slowly, if at all. Computer power has increased ten times every eight years since 1946. In the 1990s, when the sixth generation appears, the reasoning power of an intelligence built out of silicon will begin to match that of the human brain. That does not mean the evolution of intelligence has ended on the earth. Judging by the past, we can expect that a new species out of man, surpassing his achievements as he has surpassed those of his predecessor. Only a carbon chemistry would assume that the new species must be man's flesh-and-blood descendants. The new kind of intelligent life is more likely to be made of silicon.

单选题The open college is based on a new ______ on education which emphasizes the use of modern TV media to get messages across.

单选题The fist sentence in this paragraph is______; it can be interpreted in many ways. A. intricate B. ambiguous C. duplicated D. confused

单选题How can you ______ and watch the country go to ruin? A. stand by B. stand for C. stand up D. stand up for

单选题They awoke to find toe maid had left the Uremnants/U of dinner on the table.

单选题Culture is transmitted largely by language and by the necessity for people in close contact to co-operate. The more extensive the communications network, the greater the exchange of ideas and beliefs and the more alike people become--in toleration of diversity if nothing else. Members of a culture or a nation are generally in closer contact with one another than with members of other cultures or nations. They become more like each other and more unlike others. In this way, there develops "national character", which is the statistical tendency for a group of people to share values and follow similar behavior patterns. Frequently, the members of one culture will interpret the "national characteristics" of another group in terms of their own values. For example, the inhabitants of a South Pacific island may be considered "lazy" by citizens of some industrialized nations. On the other hand, it may be that the islanders place a great value on social relationships but little value on "productivity", and crops grow with little attention. The negative connotation of the label "lazy" is thus unjustified from the point of view of the island culture. Stereotypes, such as "lazy", "inscrutable", and "dishonest" give people the security of labels with which to react to others in a superficial way, but they are damaging to real understanding among members of different cultures. People react more to labels than to reality. A black American Peace Corps volunteer, for instance, is considered and called a white man by black Africans. The "we--they" distinction applies to whatever characteristic the "wes" have and the "theys" do not have-- and the characteristics attributed to the "theys" are usually ones with a negative value. The distinction becomes most obvious in times of conflict. For this reason, it is often suggested the only thing that might join all men together on this planet would be an invasion from outer space. "We", the earthlings, would then fight "them", the outsiders. Given the great diversities- real and imagined- among people of the world, is there any foundation for hope that someday all men might join together to form a single and legitimate world government? The outcome will probably depend on the political evolution of mankind.

单选题Color is very important to most animals for it helps them to get along in the world. Color【C1】______to make an animal difficult for its enemies to【C2】______. Many animals match their【C3】______so well that as long as they do not move no one is【C4】______to see them. You probably have often "jumped" a rabbit. If you【C5】______, you know how the rabbit sits perfectly still【C6】______you are just a few feet away. You【C7】______see the rabbit till it runs for its【C8】______matches very closely the place where it is【C9】______. Many times you may have walked past a rabbit【C10】______didn't run and you never knew it was there at all. One of the most usual color schemes that helps animals to keep【C11】______being seen, is a dark back and light underpants. If an animal is the same color all【C12】______, there is always a dark shadow along the animal's belly(腹部).【C13】______an enemy couldn't see the animal he could see this dark shadow. The shadow makes the animal【C14】______out to view. But if the belly is【C15】______than the rest of the animal, the shadow will not be noticed.

单选题In Second Nature, Nobel Prize-winning neuroscientist Gerald Edelman argues that the brain and mind are unified, but he has little patience with the claim that the brain is a computer. Fortunately for the general reader, his explanations of brain function are accessible, reinforced by concrete examples and metaphors. Edelman suggests that thanks to the recent development of instruments capable of measuring brain structure within millimeters and brain activity within milliseconds, perceptions, thoughts, memories, willed acts, and other mind matters traditionally considered private and impenetrable to scientific scrutiny now can be correlated with brain activity. The author describes three unifying insights that correlate mind matters with brain activity. First, even distant neurons will establish meaningful connections (circuits) if their patterns are synchronized. Second, experience can either strengthen or weaken synapses (neuronal connections). Finally, there is reentry, the continued signaling from one brain region to another and back again along massively parallel nerve fibers. Edelman concedes that neurological explanations for consciousness and other aspects of mind are not currently available, but he is confident that they will be soon. Meanwhile, he is comfortably hazarding a guess: "All of our mental life.., is based on the structure and dynamics of our brain," Despite this optimism about the explanatory powers of neuroscience, Edelman acknowledges the pitfalls in attempting to explain all aspects of the mind in neurological terms. Indeed, culture--not biology--is the primary determinant of the brain's evolution, and has been since the emergence of language, he notes. However, I was surprised to learn that he considers Sigmund Freud "the key expositor of the effects of unconscious processes on behavior". Such a comment ignores how slightly Freud's conception of the unconscious, with its emphasis on sexuality and aggression, resembles the cognitive unconscious studied by neuroscientists. Still, Second Nature is well worth reading. It serves as a bridge between the traditionally separate camps of "hard" science and the humanities. Readers without at least some familiarity with brain science will likely find the going difficult at certain points. Nonetheless, Edelman has achieved his goal of producing a provocative exploration of"how we come to know the world and ourselves".

单选题This blue flower is known by ______ names in other parts of England.

单选题They will take measures to guarantee against the ______ of similar incidents in the future.

单选题{{B}}Text 1{{/B}} British cancer researchers have found that childhood leukaemia is caused by an infection, and clusters of cases around industrial sites are the result of population mixing that increases exposure. The research published in the British Journal of Cancer backs up a 1988 theory that some as-yet unidentified infection caused leukaemia—not the environmental factors widely blamed for the disease. "Childhood leukaemia appears to be an unusual result of a common infection," said Sir Richard Doll, an internationally-known cancer expert who first linked tobacco with lung cancer in 1950. "A, virus is the most likely explanation. You would get an increased risk of it if you suddenly put a lot of people from large towns in a rural area, where you might have people who had not been exposed to the infection. "Doll was commenting on the new findings by researchers at Newcastle University, which focused on a cluster of leukaemia cases around the Sellafield nuclear reprocessing plant in Cumbria in northern England. Scientists have been trying to establish why there was more leukaemia in children around the Sellafield area, but have failed to establish a link with radiation or pollution. The Newcastle University research by Heather Dickinson and Louise Parker showed the cluster of cases could have been predicted because of the mount of population mixing going on in the area, as large numbers of construction workers and nuclear staff moved into a rural setting. "Our study shows that population mixing can account for the (Sellafield) leukaemia cluster and that all children, whether their parents are newcomers or locals, are at a higher risk if they are born in an area of high population mixing, "Dickinson said in a statement issued by the Cancer Research Campaign, which publishes the British Journal of Cancer. Their paper adds crucial weight to the 1988 theory put forward by Leo Kinlen, a cancer epidemiologist at Oxford University, who said that exposure to a common unidentified infection through population mixing resulted in the disease.

单选题______ my return, I learned that my supervisor had gone to the lab and would not be back for several hours. A. For B. In C. On D. To

单选题What does the author mean by "most people are literally having a ZZZ" (Line 2, Paragraph 5)?

单选题zelizer refers to all of the following as important influences in changing the assessment of children's worth except changes in