单选题Based on this passage, over-learning is good because ______.

单选题What has troubled many families in the United States?

单选题Edie: I think Professor Holt is smart and she's really a good teacher. Rosa: OK. I'll try to get into her class. Edie: ______! A. You can't miss it B. Forget it C. Mind you D. You won't be sorry

单选题Between 1833 and 1837, the publishers of a "penny press" proved that a low-priced paper, edited to interest ordinary people, could win what amounted to a mass circulation for the times and thereby attract an advertising volume that would make it independent. These were papers for the common citizen and were not tied to the interests of the business community, like the mercantile press, or dependent for financial support upon political party allegiance. It did not necessarily follow that all the penny papers would be superior in their handling of the news and opinion functions. But the door was open for some to make important journalistic advances. The first offerings of a penny paper tended to be highly sensational; human interest stories overshadowed important news, and crime and sex stories were written in full detail. But as the penny paper attracted readers from various social and economic brackets, its sensationalism was modified. The ordinary reader came to want a better product, too. A popularized style of writing and presentation of news remained, but the penny paper became a respectable publication that offered significant information and editorial leadership. Once the first of the successful penny papers had shown the way, later ventures could enter the competition at the higher level of journalistic responsibility the pioneering papers had reached. This was the pattern of American newspapers in the years following the founding of the New York Sun in 1833. The Sun, published by Benjamin Day, entered the lists against 11 other dailies. It was tiny in comparison; but it was bright and readable, and it preferred human interest features to important but dull political speech reports. It had a police reporter writing squibs of crime news in the style already proved successful by some other papers. And, most important, it sold for a penny, whereas its competitors sold for six cents. By 1837 the Sun was was more than the total of all 11 New York daily newspapers combined when the Sun first appeared. In those same four years James Gordon Bennett brought out his New York Herald (1835), and a trio of New York printers who were imitating Day's success founded the Philadelphia Public Ledger (1836) and the Baltimore Sun (1837). The four penny sheets all became famed newspapers.

单选题By isolating negative words and phrases, you can ______ the damage you're doing to yourself. A. point out B. point C. pinpoint D. get

单选题______ the complaint you have mad4 there is nothing we can do to improve the quality of these goods.

单选题She has a small machine for______coffee beans.

单选题Passenger ships and ______ are often equipped with ship-to-shore or air-to-land radio telephones. A. aircrafts B. aircraft C. the planes D. also the planes

单选题As a ______ actor, he can perform, sing, dance and play several kinds of musical instruments. A. flexible B. versatile C. sophisticated D. productive

单选题{{B}}Passage 1{{/B}} Placing a human being behind the wheel of an automobile often has the same curious effect as cutting certain fibers in the brain. The result in either case is more primitive behavior. Hostile feelings are apt to be expressed in an aggressive way. The same man who will step aside for a stranger at a doorway will, when behind the wheel, risk an accident trying to beat another motorist through an intersection. The importance of emotional factors in automobile accidents is gaining recognition. Doctors and other scientists have concluded that the highway death toll resembles a disease epidemic and should be investigated as such. Dr. Ross A. Mcfarland, Associate Professor of Industrial Hygiene at the Harvard University School of Public Health, said that accidents "now constitute a greater threat to the safety of large segments of the population than diseases do." Accidents are the leading cause of death between the ages of 1 and 35. About one third of all accidental deaths and one seventh of all accidental injuries are caused by motor vehicles. Based on the present rate of vehicle registration, unless the accident rate is cut in half, one of every 10 persons in the country will be killed or injured in a traffic accident in the next 15 years. Research to find the underlying causes of accidents and to develop ways to detect drivers who are apt to cause them is being conducted at universities and medical centers. Here are some of their findings so far: A man drives as he lives. If he is often in trouble with collection agencies, the courts, and police, chances are he will have repeated automobile accidents. Accident repeaters usually are egocentric, exhibitionistic, resentful of authority, impulsive, and lacking in social responsibility. As a group, they can be classified as borderline psychopathic personalities, according to Dr. McFarland. The suspicion, however, that accident repeaters could be detected in advance by screening out persons with more hostile impulses is false. A study at the University of Colorado showed that there were just as many overly hostile persons among those who had no accidents as among those with repeated accidents.

单选题By calling these early computers "high-speed idiots", people were really implying that computers ______

单选题The "standard of living" of any country means the average person"s share of the goods and services which the country produces. A country"s standard of living, 1 , depends first and 2 on its capacity to produce wealth. "Wealth" in this sense is not money, for we do not live on money, 3 on things that money can buy: "goods" such as food and clothing and "services" such as transport and 4 . A country"s capacity to produce wealth depends upon many factors, most of 5 have an effect on one another. Wealth depends 6 a great extent upon a country"s natural resources, such as coal, gold, and other minerals, water supply and so on. Some regions of the world are well 7 with coal and minerals, and have a fertile soil and a 8 climate; other regions possess perhaps only one of these things, and some regions possess none of them. The U. S. A. is one of the wealthiest regions of the world because she has vast natural resources 9 her borders, her soil is fertile, and her climate is 10 The Sahara Desert, on the other hand, is one of the least wealthy. Next to natural resources 11 the ability to turn them to use. China is perhaps as well 12 as the U.S.A. in natural resources, but suffered for many years from civil and 13 wars, and for this and other reasons was unable to develop her resources. 14 and stable political conditions, and 15 from foreign invasion, enable a country to develop her resources peacefully and steadily, and to produce more wealth than another country equally well 16 by nature but less well ordered. Another important factor is the technical 17 of a country"s people. Old countries that have, through many centuries, trained up numerous skilled craftsmen and technicians 18 better placed to produce wealth than countries whose workers are largely unskilled. Wealth also produces wealth. As a country becomes wealthier, its people have a large 19 for saving, and can put their savings into factories and machines which will help workers to 20 more goods in their working day.

单选题People can live for many days without food, but two or three days without water may ______death.

单选题An invisible border divides those arguing for computers in the classroom on the behalf of students' career prospects and those arguing for computers in the classroom for broader reasons of radical educational reform. Very few writers on the subject have explored this distinction—indeed, contradiction—which goes to the heart of what is wrong with the campaign to put computers in the classroom. An education that aims at getting a student a certain kind of job is a technical education, justified for reasons radically different from why education is universally required by law. It is not simply to raise everyone's job prospects that all children are legally required to attend school into their teens. Rather, we have a certain conception of the American citizen, a character who is incomplete if he cannot competently assess how his livelihood and happiness are affected by things outside of himself. But this was not always the case; before it was legally required for all children to attend school until a certain age, it was widely accepted that some were just not equipped by nature to pursue this kind of education. With optimism characteristic of all industrialized countries, we came to accept that everyone is fit to be educated. Computer-education advocates forsake this optimistic notion for a pessimism that betrays their otherwise cheery outlook. Banking on the confusion between educational and vocational reasons for bringing computers into schools, computer-ed advocates often emphasize the job prospects of graduates over their educational achievement. There are some good arguments for a technical education given the right kind of student. Many European schools introduce the concept of professional training early on in order to make sure children are properly equipped for the professions they want to join. It is, however, presumptuous to insist that there will only be so many jobs for so many scientists, so many businessmen, so many accountants. Besides, this is unlikely to produce the needed number of every kind of professional in a country as large as ours and where the economy is spread over so many states and involves so many international corporations. But, for a small group of students, professional training might be the way to go since well-developed skills, all other factors being equal, can be the difference between having a job and not. Of course, the basics of using any computer these days are very simple. It does not take a lifelong acquaintance to pick up various software programs. If one wanted to become a computer engineer, that is, of course, an entirely different story. Basic computer skills take—at the very longest—a couple of months to learn. In any case, basic computer skills are only complementary to the host of real skills that are necessary to become any kind of professional. It should be observed, of course, that no school, vocational or not, is helped by a confusion over its purpose.

单选题______ his disadvantage, it began to rain heavily suddenly.A. AtB. WithC. ToD. For

单选题British food has a good reputation, but English cooking has a bad one. It is difficult to explain the reason for this. Unfortunately, however, superb raw ingredients are often mined from the kitchen so that they come to the table without any of the natural flavor and goodness. This bad reputation discourages a lot of people from eating in an English restaurant. If they do go to one, they are usually full of prejudice against the food. It is a pity, because there are excellent cooks in England, excellent restaurants, and excellent home-cooking. How, then, has the bad reputation been built up? Perhaps one reason is that Britain"s Industrial Revolution occurred very early, in the middle of the nineteenth century. As a result; the quality of food changed too. This was because Britain stopped being a largely agricultural country. The population of the towns increased enormously between 1840 and 1870, and people could no longer grow their own food, or buy it flesh from a farm. Huge quantities of food had to be taken to the towns, and a lot of it lost its freshness on the way. This lack of freshness was disguised by "dressing up" the food. The rich middle classes ate 16g elaborate meals which were cooked for them by French chefs. French became, and has remained, the official language of the dining room. Out-of-season delicacies were served in spite of their expense, for there were a large number of extremely wealthy people who wanted to establish themselves socially. The "look" of the food was more important than its taste. In the 1930s, the supply of servant began to decrease. People still tried to produce complicated dishes, however, but they economized on the preparation time. The Second World War made things even worse by making raw ingredients extremely scarce. As a result, there were many women who never had the opportunity to choose a piece of meat from a well-stocked butcher"s shop, but were content and grateful to accept anything that was offered to them. Food rationing continued in Britain until the early 1950s. It was only after this had stopped, and butter, eggs and cream became more plentiful, and it was possible to travel abroad again and taste other ways of preparing food, that the English difference to eating became replaced by a new enthusiasm for it.

单选题Fluoride deters tooth decay by reducing the growth of bacteria that destroy tooth enamel.