单选题How was President Roosevelt's offending denial of some Congressmen' requests explained?

单选题An Ohio State University study has linked behavior in young children 61 the type of job their mother has. Mothers with complex occupations that are self-directed and require working with other people 62 to have offspring with relatively low levels of behavior problems. The opposite held 63 when the jobs were routine, closely supervised, and dealt with things, rather than people. "A job that challenges and interests a mother and gives her an opportunity to exercise judgment and solve problems clearly has 64 consequences for her children's behavior," indicates 65 professor of sociology Elizabeth Mengaghan. Occupations with more positive conditions include management, sales, and teaching positions. Jobs that may be related to increased child behavior problems include book keeping, food service, and 66 line positions. Women who are supervised closely at work and made to 67 strict orders may be more likely to use this same style in 68 their kids. They may emphasize obedience to parental authority and the potential for 69 punishment. "We believe that the choice of such a parenting style may increase the 70 of behavior problems in children." On the 71 hand, mothers whose jobs are less controlled by supervisors and 72 must work closely with other people probably rely less on physical punishment, 73 encouraging children to think about consequences of their actions and 74 responsibility for their behavior. 75 an approach encourages youngsters to follow parental demands 76 they aren't being supervised because they have accepted parental values as their own. Moreover, mothers whose jobs don't 77 constant supervision" 78 problem-solving skills that they can bring to other parts of their life". The research also found that those who have 79 challenging and interesting jobs provide better home environments for their children. The mothers give their offspring more intellectual stimulation and emotional support, and this, 80 turn, is linked to fewer behavior problem.

单选题According to the latest report, consumer confidence ______ a breathtaking 15 points last month, to its lowest level in ten years.

单选题The American economic system is organized around a basically private-enterprise, market- oriented economy in which consumers largely determine what shall be produced by spending their money in the marketplace for those goods and services that they want most. Private businessmen, striving to make profits, produce these goods and services in competition with other businessmen; and the profit motive, operating under competitive pressures, largely determines how these goods and services are produced. Thus, in the American economic system it is the demand of individual consumers, coupled with the desire of businessmen to maximize profits and the desire of individuals to maximize their incomes, that together determine what shall be produced and how resources are used to produce it. An important factor in a market-oriented economy is the mechanism by which consumer demands can be expressed and responded to by producers. In the American economy, this mechanism is provided by a price system, a process in which prices rise and fall in response to relative demands of consumers and supplies offered by seller-producers. If the product is in short supply relative to the demand, the price will be bid up and some consumers will be eliminated from the market. If, on the other hand, producing more of a commodity results in reducing its cost, this will tend to increase the supply offered by seller-producers, which in turn will lower the price and permit more consumers to buy the product. Thus, price is the regulating mechanism in the American economic system. The important factor in a private-enterprise economy is that individuals are allowed to own productive resources (private property), and they are permitted to hire labor, gain control over natural resources, and produce goods and services for sale at a profit. In the American economy, the concept of private property embraces not only the ownership of productive resources but also certain rights, including the right to determine the price of a product or to make a flee contract with another private individual.

单选题One of the stands______and dozens of people were either killed or injured.

单选题Their signing of the treaty was regarded as a {{U}}conspiracy{{/U}} against the British Crown.

单选题After four years in the same job his enthusiasm finally ______. A. deteriorated B. dispersed C. dissipated D. drained

单选题We ______ that he cannot finish the work before June 15.

单选题It is one of the ironies of Western man that he has never felt ______ invention as a threat to his way of life. A. any concern with B. any concern about C. any concern in D. any concern at

单选题{{B}}Passage Two{{/B}} In the opinion of many Americans and Europeans, we only began to really explore our world in the sixteenth century. According to them, the sailors of the ancient world did not explore distant parts of the world; they did not have the necessary knowledge or skills for long sea journeys. However, the people who have this opinion are forgetting two important facts of history. First, sometimes early scientists have an idea which is correct, but scientists in later centuries do not believe it. For example, about 270 B. C., a Greek scientist had an idea which we all believe today: The earth moves around the sun. But for the following 1,600 years scientists did not believe this. In their opinion, the sun clearly moved around the earth. They discovered the truth again only in the fifteenth century! The second fact of history that many people forget is this: Ancient does not mean primitive. For example, the ancient Egyptians knew a great deal about the stars; they used this knowledge to find their way across the oceans. Two thousand years ago a Greek scientist who lived in Egypt calculated the distance around the earth. The results of his calculations were close to the real distance we know today! So the ancients had a great deal of scientific knowledge. They also had skills which equaled the skills of to- day. For example, 1,300 years ago and before, fishermen in Ireland built their boats of wood and leather. Today some fishermen in Ireland still make boats of the same de- sign. They use tools and materials which are not very different from the tools and materitals which their ancestors used. Why? The ancient design of the boats was good, and with skillful sailors, these boats can sail in all kinds of weather. Clearly long before the sixteenth century, people had the skill, the knowledge and the equipment which were necessary for long journeys by sea. The world did not have to wait until the sixteenth century for its first explorers!

单选题Working in the library is not his only ______.

单选题The business was forced to close down for a period but was ______ revived. A. successively B. subsequently C. predominantly D. preliminarily

单选题The text mainly supplies information for answering which of the following questions?

单选题The prevailing wind is the wind direction most often observed during a given time period. Wind speed is the rate at which the air moves past a stationary object.

单选题Don't Ulet on/U to Doris that we are going to the movies tonight.

单选题Borders these days have little meaning for Singapore-based regional ______ of electronics firms like Sanyo and Philips. A. executives B. officials C. governors D. servants

单选题The scientist has ______ the behavior of birds all his life.

单选题Celebrate. Celebrate. Physicians are delighted with a Food and Drug Administration(FDA)advisory panel's recommendation earlier this year that Vioxx and its cousins Bextra and Celebrex(all medicines known as Cox-2 inhibitors)should remain on the market, despite evidence they increase heart disease risk in some people. The panelists reached their decision after weighing all the data and concluding the benefits of these pain-relieving drugs outweighed the risks. Specifically, these scientists acknowledged that, for some patients, these prescription drugs were uniquely effective in reducing pain from arthritis and other causes. For others—concerned about ulcers associated with aspirin and other OTC analgesics—the Cox-2 inhibitors offered the advantage of minimizing potentially serious effects of stomach irritation. Now is an appropriate time for everyone to take a fresh look at the benefit-risk equation for Vioxx and the other Cox-2 inhibitors. The risks—increased risk of heart disease in some who use the drugs—have been well publicized. Much less publicity has been given to a spectrum of real and potential benefits that go way beyond reduced risk of stomach irritation. These little-discussed benefits would have been lost, perhaps permanently—had Vioxx, Bextra and Celebrex been driven from shelves in pursuit of perfect safety, an unattainable goal. For example, there is substantial evidence Cox-2 inhibitors can reduce development of colon polyps, which may become colon cancel indeed. Celebrex is FDA-approved for those genetically prone to colon cancer. Ironically, the 2004 study that revealed the elevated heart attack risk of Vioxx was primarily designed to further establish the drug's effectiveness in protecting against colon cancer. And while the results of that interrupted trial have not yet been published, there is good reason to believe they will confirm the protective effects against colon cancer established in research over the last 10 years. At the time of its withdrawal from the market last fall, studies of Vioxx as well as the other Cox-2 drugs suggested they had other anti-cancer properties as well, possibly reducing the risk of malignancies of a number of sites, including the lung and esophagus. Had these drugs been dismissed, their untapped promise for prevention would have evaporated well before it was evaluated and applied to save lives. Fortunately, cooler and wiser heads prevailed.

单选题 In the 1970s, Charles Kowal at mount Palomar Observatory discovered Chiron, an asteroid whose orbit was in the vicinity of Saturn and Uranus, far from other known asteroids. In the 1990s, robotic telescopes began to comb the Kuiper Belt, the region of the solar system beyond the obit of Neptune. More than 400 objects were discovered there, with the biggest object about half the size of Pluto. Last year, the farthest asteroid to date was found: Sedna, named after an Inuit goddess who dwells in a cave at the bottom of the Arctic Ocean. Sedna has a very eccentric orbit that takes it nearly 1,000 times farther from the Sun than Pluto and outside the Kuiper Belt. In early January 2005, the same team that discovered Sedna found a larger body. From its light and absence of infrared radiation, the team of Brown, Trujillo, and Rabinovitz are certain that the object's size is between that of Pluto (1,485 miles across) and our moon (2,160 miles across). Its temporary name is 2003 UB313. Presently, the object is 9 billion miles from the sun, about three times as far as Pluto. At this distance from the Sun, 2003 UB313 has a surface temperature of 415~ below zero. This Kuiper Belt object takes 560 Earth years to orbit the Sun. 2003 UB313's orbit has a tilt of 44 degrees to the plane of the solar system, more than twice the tilt of Pluto (the previous planet record holder). Its minimum solar distance is 3.3 billion years, close to the edge of Neptune's orbit. 2003 UB313's orbit is well-known due to its being captured on wide angle photographs taken in 2003 by the 4-foot-wide Schmidt telescope on Mount Palomar. Will UB313 be called the tenth planet? The decision is up to the International Astronomical Union. Asteroids are mini-planets, most of which are located in the asteroid belt, between the orbits of Mars and Jupiter. The largest of the belt asteroids is Ceres, about 700 miles across (i. e. roughly the size of Texas). Most asteroids are much smaller, typically less than a mile across. While most asteroids keep their distance from Earth, there are probably 1,000 asteroids that are located in the inner solar system and may cross Earth's orbit. Last summer, a robotic telescope discovered a 1,000-foot-wide asteroid that crosses Earth's orbit. The object is 99942 Apophis. Once Apophis' orbit was determined, its future positions decades ahead were generated by computer. There was a shock when an early study showed Apophis to be on a collision course with Earth in 2029. More early observations were utilized to refine Apophis' orbit; new calculations showed that on April 13,2029, Apophis would instead pass 22,000 miles from Earth, which is a little less than three Earth diameters. Apophis will then be visible to the naked eye from Europe and western Africa.