单选题Are some people born clever and others born stupid? Or is intelligence developed by our environment and our experience? Strangely enough, the answer to these questions is yes. To some extent our intelligence is given to us at birth, and no amount of special education can make a genius out of a child born with low intelligence. On the other hand, a child who lives in a boring environment will develop his intelligence less than one who lives in rich and varied surroundings. Thus the limits of a person"s intelligence are fixed at birth, whether or not he reaches those limits will depend on his environment. This view, now held by most experts, can be supported in a number of ways. It is easy to show that intelligence is to some extent something we are born with. The closer the blood relationship between two people is, the closer they are likely to be in intelligence. Thus if we take two unrelated people at random from the population, it is likely that their degree of intelligence will be completely different. If, on the other hand, we take two identical twins, they will very likely be as intelligent as each other. Relations like brothers and sisters, parents and children, usually have similar intelligence, and this clearly suggests that intelligence depends on birth. Imagine now that we take two identical twins and put them in different environments. We might send one, for example, to a university and the other to a factory where the work is boring. We would soon find differences in their intelligence developing, and this indicates that environment as well as birth plays an important part. This conclusion is also suggested by the fact that people who live in close contact with each other, but who are not related at all are likely to have similar degree of intelligence.

单选题When we ______ to the village, it was very late.

单选题When they advise your kids to "get an education" if you want to raise your income, they tell you only half the truth. What they really mean is to get just enough education to provide man power for your society, but not too much that you prove an embarrassment to your society. Get a high school diploma, at least. Without that, you are occupationally dead, unless your name happens to be George Bernard Shaw or Thomas Alva Edison and you can successfully drop out in grade school. Get a college degree, if possible. With a B. A., you are on the launching pad. But now you have to start to put on the brakes. If you go for a master's degree, make sure it is an MBA, and only from a first-rate university. Beyond this, the famous law of diminishing returns begins to take effect. Do you know, for instance, that long-haul truck drivers earn more a year than full professors? Yes, the average 1977 salary for those truckers was $24,000, while the full professors managed to average just $23,930. A Ph.D is the highest degree you can get, but except in a few specialized fields such as physics or chemistry, where the degree can quickly be turned to industrial or commercial purposes, you are facing a dim future. There are more Ph.Ds unemployed or underemployed in this country than in any other part of the world by far. If you become a doctor of philosophy in English or history or anthropology or political science or languages or—worst of all — in philosophy, you run the risk of becoming overeducated for our national demands. Not for our needs, mind you, but for our demands. Thousands of Ph.Ds are selling shoes, driving cabs, waiting on tables and filling out fruitless applications month after month. And then maybe taking a job in some high school or backwater college that pays much less than the janitor earns. You can equate the level of income with the level of education only so far. Far enough, that is, to make you useful to the gross national product, but not so far that nobody can turn much of a profit on you.

单选题After interviewing several workers, she came to a (an) ______that their working conditions were very poor.

单选题Human-centered, or anthropocentric, views favor an instrumental view of the natural world and value it only as a means to human ends. Such views place great value and trust in science and technology, believing that the powers of control over nature conferred by them are non-problematical and that ongoing technical development will be crucial to ensure a world bereft of poverty, drudgery and disease etc. A. favor an instrumental B. a means to human ends C. conferred by them D. will be crucial to ensure

单选题Nobody knows what the ______ of the war will be.

单选题A factory that makes uranium fuel for nuclear reactors had a spill so bad it kept the plant closed for seven months last year and became one of only three events in all of 2006 serious enough for the Nuclear Regulatory Commission to include in an annual report to Congress. After an investigation, the commission changed the terms of the factory's license and said the public had 20 days to request a hearing on the changes. But no member of the public ever did. In fact, no member of the public could find out about the changes. The document describing them, including the notice of hearing rights for anyone who felt adversely affected, was stamped "official use only," meaning that it was not publicly accessible. The agency would not even have told Congress which factory was involved were it not for the efforts of Gregory B. Jaczko, one of the five commissioners. Mr. Jaczko identified the company, Nuclear Fuel Services of Erwin, Tenn,, in a memorandum that became part of the public record. His memorandum said other public documents would allow an informed person to deduce that the factory belonged to Nuclear Fuel Services. Such secrecy by the Nuclear Regulatory Commission is now coming under attack by influential members of Congress. These lawmakers argue that the agency is withholding numerous documents about nuclear facilities in the name of national security, but that many withheld documents are not sensitive. The lawmakers say the agency must rebalance its penchant for secrecy with the public's right to participate in the licensing process and its right to know about potential hazards. The agency, the congressmen said, "has removed hundreds of in nocuous documents relating to the N. F. S. plant from public view." With a resurgence of nuclear plant construction expected after a 30-year hiatus, agency officials say frequently that they are trying to strike a balance between winning public confidence by regulating openly and protecting sensitive information. A commission spokesman, Scott Burnell, said the "official use only" designation was under review. As laid out by the commission's report to Congress and other sources, the event at the Nuclear Fuel Service factory was discovered when a supervisor saw a yellow liquid dribbling under a door and into a hallway. Workers had previously described a yellow liquid in a "glove box," a sealed container with gloves built into the sides to allow a technician to manipulate objects inside, but managers had decided it was ordinary uranium. In fact, it was highly enriched uranium that had been declared surplus from the weapons inventory of the Energy Department and sent to the plant to be diluted to a strength appropriate for a civilian reactor. If the material had gone critical, "it is likely that at least one worker would have received an exposure high enough to cause acute health effects or death," the commission said. Generally, the Nuclear Regulatory Commission does describe nuclear incidents and changes in licenses. But in 2004, according to the committee's letter, the Office of Naval Reactors, part of the Energy Department, reached an agreement with the commission that any correspondence with Nuclear Fuel Services would be marked "official use only./

单选题What makes the space shuttle ______ is that it takes off like a rocket but lands like an airplane.A. exceptionalB. strangeC. uniqueD. rare

单选题With technological developments, some labor-intensive industries have ______ high-tech industries.

单选题It was in that small town ______ they worked hard and dreamed of better days to come. A．where B．which C．in which D．that

单选题"Will you make room for the old gentlemen, sir?" she said to me in a ______ voice.A. mildB. strongC. roughD. violent

单选题He plays not only the piano, ( )the violin.

单选题In 1816, an apparently insignificant event in a remote part of Northern Europe______ Europe into a bloody war.(2005年清华大学考博试题)

单选题The Revenue's last resort in solving the problem seems to be ______.

单选题His originality as a composer is____by the following group of songs.