单选题Figures showed that security screeners were ______ dangerous items.

单选题For this generation of young people, the future looks bleak. Only one in six is working full time. Three out of five live with their parents or other relatives. A large majority—73 percent—think they need more education to find a successful career, but only half of those say they will definitely enroll in the next few years. No, they are not the idle youth of Greece or Spain or Egypt. They are the youth of America, the world's richest country, who do not have college degrees and aren't getting them anytime soon. Whatever the sob stories about recent college graduates spinning their wheels as baristas or clerks, the situation for their less-educated peers is far worse. For this group, finding work that pays a living wage and offers some sense of security has been elusive. Despite the continuing national conversation about whether college is worth it given the debt burden it entails, most high school graduates without college degrees said they believe they would be unable to get good jobs without more education. Getting it is challenging, though, and not only because of formidable debt levels. Ms. McClour and her husband, Andy, have two daughters under 3 and another due next month. She said she tried enrolling in college classes, but the workload became too stressful with such young children. Mr. McClour works at a gas station. He hates his work and wants to study phlebotomy, but the nearest school is an hour and half away. Many of these young people had been expecting to go to college since they started high school, perhaps anticipating that employers would demand skills high schools do not teach. Just one in ten high school graduates without college degrees said they were " extremely well prepared by their high school to succeed in their job after graduation. " These young people worried about getting left behind and were pessimistic about reaching some of the milestones that make up the American dream. More than half — 56 percent — of high school graduates without college diplomas said that their generation would have less financial success than their parents. About the same share believed they would find work that offered health insurance within that time frame. Slightly less than half of respondents said the next few years would bring work with good job security or a job with earnings that were high " enough to lead a comfortable life". They were similarly pessimistic about being able to start a family or buy a home. The online survey was conducted between March 21 and April 2, and covered a nationally representative survey of 544 high school graduates from the classes of 2006-11 who did not have bachelor's degrees. The margin of sampling error was plus or minus 5 percentage points.

单选题

单选题Why is there a slow pace of technological change in American firms?

单选题His inability to learn foreign languages was a(n) obstacle to his career. A. barrier B. excess C. carrier D. impulse

单选题The area is ______ with trails, some as wide as boulevards, that have been cut and maintained by elephants. A. blackmailed B. latticed C. isolated D. galloped

单选题Having weighed up all the factors the department finally agreed to receive all the ______ to the committee.

单选题Professor Lewis tells of an Oxford undergraduate he knew who, priggishly despising the conventional images of God, thought he was overcoming anthropomorphism by thinking of the Deity as infinite vapor or smoke. A. factitiously B. smugly C. spontaneously D. conspicuously

单选题Smog-choked Southern California (demands) them. It's a Car for people who never want to go to (a) gas station again. But the fact is, for all the talk, selling (gas-less) machines has been a (hard-sell).

单选题The slogan "scientific truth is a matter of social authority" has become dogma to many academic interest groups who have been ______ themselves to substitute their authority for that of the practicing scientists.

单选题We can distinguish those research reports from each other mainly through ______.

单选题The ideological make-up of the unions is now______different from what it had been.(四川大学2010年试题)

单选题In most American cities, the rent for a one-bedroom apartment was ＄ 250 or more per month in recent years. In some smaller cities such as Louisville, Kentucky or Jacksonville, Florida the rent was less, but in larger cities it was more. For example, if you lived in Los Angeles, you had to pay ＄ 400 or more to rent a one-bedroom apartment, and the Same apartment rented for ＄ 625 and up in Chicago. The most expensive rents in the U.S. were in New York City, where you had to pay at least ＄ 700 a month to rent a one-bedroom apartment in most parts of the city. Renters and city planners are worried about the high cost of renting apartments. Many cities now have rent-control laws to keep the cost of renting low. These laws help low-income families who cannot pay high rents. Rent control in the United States began in 1943 when the government imposed rent controls on all American cities to help workers and the families of soldiers during World War Ⅱ. After the war, only one city—New York—continued these World War H controls. Recently, more and more cities have returned to rent controls. At the beginning of the 1980s, nearly one fifth of the people in the United States lived in cities with rent-control laws. Many cities have rent-control laws, but why are rents so high? Builders and landlords blame rent controls for the high rents. Rents are high because there are not enough apartments to rent, and they blame rent controls for the shortage of apartments. Builders want more money to build more apartment buildings, and landlords want more money to repair their old apartment buildings. But they cannot increase rents to get this money because of the rent-control laws. As a result, landlords are not repairing their old apartments, and builders are not building new apartment buildings to replace the old apartment buildings. Builders are building apartments for high-income families, not low-income families, so low-in- come families must live in old apartments that are in disrepair. Builders and landlords claim that rent-control laws really hurt low-income families. Many renters disagree with them. They say that rent control is not the problem. Even without rent controls, builders and landlords will continue to ignore low-income housing because they can make more money from high-income housing. The only answer, they claim, is more rent controls and government help for low-income housing.

单选题The author believes that a religious explanation for the war in Northern Ireland is ______.

单选题In the same way that a child must be able to move his arms and legs before he can learn to walk, the child must physiologically be capable of producing and experiencing particular emotions before these emotions can be modified through learning. Psychologists have found that there are two basic processes by which learning takes place. One kind of learning is called "classical conditioning". This occurs when one event or stimulus is consistently paired with, or followed by, a reward or punishment. It is through classical conditioning that a child learns to associate his mother's face and voice with happiness and love, for he learns that this person provides food and comfort. Negative emotions are learned in a similar fashion. The second kind of learning is called " operant conditioning. " This occurs when an individual learns to do things that produce rewards in his environment and learns not to do things that produce punishments. For example, if a mother always attends to her baby when he cries and cuddles him until he is quiet, she may teach him that if he cries he will get attention from mother. Thus, the baby will learn to increase his crying in order to have his mother more. Every day, we grow and have new experiences. We constantly learn by reading, watching television, interacting with some people, and so forth. This learning affects our emotions. Why is it that we learn to like some people and dislike others? If a person is nice to us, cares about us, we learn to associate this person with positive feelings, such as joy, happiness, and friendliness. On the other hand, if a person is mean to us, does not care about us, and even deliberately does things to harm us, we learn to associate this person with negative feelings, such as unhappiness, discomfort, and anger.

单选题The blunder of Argentina's goalie cost them the game in the match against Brazil.(2003年中国社会科学院考博试题)

单选题It's time-consuming to locate the book in the bookcase, because the way he arranges books is quite ______. A. mighty B. wholesome C. undesirable D. random

单选题2 Every time a person eats something he makes a nutritional decision. He accepts or re jects the food available to him at home for meals or snacks. Or he selects food for himself at many places in the community, such as supermarkets, drive-ins, restaurants, and food counters in drugstores. These selections make a difference in how an individual looks, how he feels, and how well he can work and play. When a good assortment of food in appropriate amounts is selected and eaten, the consequences are more likely to be a desirable level of health and enough energy to allow one to be as active as one needs and wants to be. When choices are less than desirable, the consequences are likely to be poor health or limited energy or both. Studies of diets of individuals in the United States show that food selection is a highly individual matter, even among young children. Furthermore, far too many individuals of all ages are making poor choices day after day and are either now living with the conse quences or will be in the future. Nutritionists and workers in allied professions have been concerned about helping peo ple learn to select and enjoy a wide variety of food combinations that can add up to a good diet. Most people believe that they are well fed--that the choices they make are good ones. After all, they are not really sick, neither are they hungry. However, their nutrition is usually poor in one respect or another. Milk and milk products, such as cheeses, ice cream or milk, buttermilk, and yogurt, are often slighted. Then people may skip many fruits and vegetables, particularly those that are good sources of vitamins A and C. These include dark green leafy vegetables, deep yellow vegetables, and citrus fruits and vegeta bles, such as cabbage, tomatoes, and green peppers. Every American has the right to choose to be uniformed about nutrition as well as to be informed. If a person believes that she is well fed, attitudes, habits, and information cannot be forced upon her. There are life situations, however, that tend to cause all individuals to want to know how to make the best choices. For example, a young couple is starting a family and must prepare food for young children.

单选题A narrow path______the stream to the other side of the park.