单选题Recently, the American Heart Association surveyed 1,000 people nationwide about their thoughts on sodium and heart health. 61% said that they believed sea salt Was a low-sodium alternative to table salt. They can be forgiven for thinking so. Sea salt is marketed as a healthy food, added to soups, potato chips and a wide variety of packaged snacks labeled "low sodium", "all natural" and "healthy". But in reality, sea salt and table salt are not terribly different, at least chemically. The real differences are in how the two are used in cooking. Table salt comes from underground salt deposits. Companies that sell it typically add something to keep it from clumping (结块). During processing, table salt is stripped of many of its natural minerals. Sea salt, on the other hand, is made from evaporated seawater, with little processing, it retains most of its minerals, which some cooks say give it a better flavor. But both contain the same amount of sodium chloride (氯化氢) by weight, which means they contribute equally to total sodium consumption and have the same effect on blood pressure. Officials recommend that adults consume no more than 2, 300 milligrams of sodium a day, equivalent to a teaspoon of salt. You should eat less if you are black, hypertensive (患高血压 的) or older than 40. Yet most Americans consume more than double the amount they need, mostly from processed foods, so it is best to limit salt—of any kind.

单选题{{B}}Text 4{{/B}} Many Americans regard the jury system as a concrete expression of crucial democratic values, including the principles that all citizens who meet minimal qualifications of age and literacy are equally competent to serve on juries; that jurors should be selected randomly from a representative cross section of the community; that no citizen should be denied the right to serve on a jury on account of race, religion, sex, or national origin ; that defendants are entitled to trial by their peers; and that verdicts should represent the conscience of the community and not just the letter of the law. The jury is also said to be the best surviving example of direct rather than representative democracy. In a direct democracy, citizens take turns governing themselves, rather than electing representatives to govern for them. But as recently as in 1968, jury selection procedures conflicted with these democratic ideals. In some states, for example, jury duty was limited to persons of supposedly superior intelligence, education, and moral character. Although the Supreme Court of the United States had prohibited intentional racial discrimination in jury selection as early as the 1880 case of Strauder v. West Virginia, the practice of selecting so-called elite or blue-ribbon juries provided a convenient way around this and other antidiscrimination laws. The system also failed to regularly include women on juries until the mid-20th century. Although women first served on state juries in Utah in 1898, it was not until the 1940s that a majority of states made women eligible for jury duty. Even then several states automatically exempted women from jury duty unless they personally asked to have their names included on the jury list. This practice was justified by the claim that women were needed at home, and it kept juries unrepresentative of women through the 1960s. In 1968, the Congress of the United States passed the Jury Selection and Service Act, ushering in a new era of democratic reforms for the jury. This law abolished special educational requirements for federal jurors and required them to be selected at random from a cross section of the entire community. In the landmark 1975 decision Taylor v. Louisiana, the Supreme Court extended the requirement that juries be representative of all parts of the community to the state level. The Taylor decision also declared sex discrimination in july selection to be unconstitutional and ordered states to use the same procedures for selecting male and female jurors.

单选题Cars account for half the oil consumed in the U.S., about half the urban pollution and one fourth the greenhouse (温室) gases. They take a similar toll (损耗) of resources in other industrial nations and in the cities of the developing world. As vehicle use continues to increase in the coming decade, the U.S. and other countries will have to deal with these issues or else face unacceptable economic, health-related and political costs. It is unlikely that oil prices will remain at their current low level or that other nations will accept a large and growing U.S. contribution to global climatic change. Policymakers, and industry have four options: reduce vehicle use, increase the efficiency and reduce the emissions of conventional gasoline-powered vehicles, switch to less harmful fuels, or find less polluting driving systems. The last of these—in particular the introduction of vehicles powered by electricity—is ultimately the only sustainable option. The other alternatives are attractive in theory but in practice are either impractical or offer only marginal improvements. For example, reduced vehicle use could solve traffic problems and a host of social and environmental problems, but evidence from around the world suggests that it is very difficult to make people give up their cars to any significant extent. In the U.S., mass-transit ridership and carpooling (合伙用车) have declined since World War II. Even in western Europe, with fuel prices averaging more than $ 1 a liter (about $ 4 a gallon) and with easily accessible mass transit and dense populations, cars still account for 80 percent of all passenger travel. Improved energy efficiency is also appealing, but alternative fuel economy has barely made any progress in 10 years. Alternative fuels such as natural gas, burned in internal-combustion engines, could be introduced at relatively low cost, but they would lead to only marginal reductions in pollution and greenhouse emissions (especially because oil companies are already spending billions of dollars every year to develop less polluting types of gasoline). (337 words)

单选题Barbara: Your help means everything. Just don"t know how I"ll ever repay you. Kenneth: ______. It"s nothing!

单选题Customer: This is ridiculous. I've been waiting for my meal for more than half an hour. Waiter: ______. A. Sorry, but you have to wait longer. B. Sorry, I know, but you see the restaurant is full and we're shorthanded today. C. You can see the manager if you want to complain. D. Sorry, but you can go to another restaurant.

单选题A Media Director Job Code: A-05-010　　　　　　　　　　　　　　　　　　　 POSTED: Feb. 13 Salary:　　　　　　　　　　　　＄90,000--＄120,000 Location: Irving TX Employer:　　　　　　　　　　　Michaels Stores Inc.　 Type: Full Time--Experienced Description Basic Function: The Media Director is responsible for managing the Media Department. The Media Director is responsible for overseeing market analyses and media recommendations for all existing, new and prospective retail locations. The Media Director manages and reviews all advertising expenses that pertain to media and oversees all media agreements for newspapers, radio, television, outdoor and magazine advertising. The Media Director is responsible for the motivation, training, and development of direct staff which includes analysts and coordinators. The Media Director determines the media goals and objectives for the company and executes overall media strategy. Notes: U.S. Residents Only. Employer will assist with relocation costs. Salary is based on full compensation package including bonus and executive stock plan. Requirement EDUCATION: Bachelor's Degree: Degree in Advertising, Marketing or related field. WORK EXPERIENCE: Minimum of 10 years in all phases of print media buying and planning. Ten years' experience in a Business environment. Experience in ROI, sales, and trade area analyses. Thorough experience in retail advertising. Proven directorial experience.　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　B Desktop Technology Consultant Work Schedule Full Time Salary ＄41,000--59,500* Location Washington D.C. metropolitan area Description: Computer Information Systems professionals: if you enjoy being the one that everyone conies to for computer technical help, then we are looking for you. You will respond to incoming customer calls for IT assistance; provide one-on-one consultation and applications troubleshooting assistance. * Employees within the organization have opportunities for additional salary advancement.

单选题______ he was an old customer, the boss allowed ten per cent discount off the prices of the goods.

单选题By no means ______ look down upon the poor.

单选题A recent study, published in last week"s Journal of the American Medical Association, offers a picture of how risky it is to get a lift from a teenage driver. Indeed, a 16-year-old driver with three or more passengers is three times as likely to have a fatal accident as a teenager driving alone. By contrast, the risk of death for drivers between 30 and 59 decreases with each additional passenger.The authors also found that the death rates for teenage drivers increased dramatically after 10 p.m., and especially after midnight, with passengers in the car, the driver was even more likely to die in a late-night accident Robert Foss, a scientist at the University of North Carolina Highway Safety Research Center, says the higher death rates for teenage drivers have less to do with "really stupid behavior" than with just a lack of driving experience. "The basic issue," He says, "is that adults who are responsible for issuing licenses fail to recognize how complex and skilled a task driving is. " Both he and the author of the study believe that the way to mitigate (使......缓解) the problem is to have states institute so-called graduated licensing systems, in which getting a license is a multistage process. A graduated license requires that a teenager first prove himself capable of driving in the presence of an adult, followed by a period of driving with night of passenger restrictions, before graduating to full driving privileges. Graduated licensing systems have reduced teenage driver crashes, according to recent studies. About half of the states now have some sort of graduated licensing system in place, but only 10 of those states have restrictions on passengers. California is the strictest, with a novice (新手) driver prohibited from carrying any passenger under 20 (with-out the presence of an adult over 25) for the first six months. (311 words)

单选题A land free from destruction, plus wealth, natural resources, and labor supply—all these were important factors, in helping England to become the center for the Industrial Revolution. (31) they were not enough. Something else was needed to start the industrial process. That "something special" was men— (32) individuals who could invent machines, find new sources of power, and establish business organizations to reshape society. The men who (33) the machines of the Industrial Revolution came from many backgrounds and many occupations. Many of them were (34) inventors than scientists. A man who is a pure scientist is primarily interested in doing his research (35) . He is not necessarily working so that his findings can be used. An inventor or one interested in applied science is (36) trying to make something that has a concrete idea. He may try to solve a problem by using the theories (37) science or by experimenting through trial and error. Regardless of his method, he is working to obtain a specific result: the construction of a harvesting machine, the burning of a light bulb, or one of (38) other objectives. Most of the people who developed the machines of the Industrial Revolution were inventors, not trained scientists. A few were both scientists and inventors. Even those who had (39) or no training in science might not have made their inventions if a groundwork had not been laid by scientists years (40) .

单选题Where did the ancient Greeks hold their first Olympics?

单选题Lame as he is, he is interested in so many things and enjoys reading about them so much that he is ______ unhappy.

单选题 Perhaps the most familiar plant movement belongs to one species of mimosa called the sensitive plant. Within seconds, it can lower its leaves and make its tiny leaflets close up like folding chairs. This movement is thought to be initiated by electrical impulses remarkably similar to nerve signals in animals. But without the animals' sophisticated motion machinery, the mimosa has had to be creative in devising a way to move. For motion, the plant depends on tiny, bulb-shaped organs located at the base of each leaf stalk and leaflet. Called pulvini, these organs hold the plant parts in place. When the mimosa is stimulated—say, by a crawling insect or a sudden change in temperature—an electrical impulse sweeps through the plant. This causes potassium and then water to be shifted from certain cells in the pulvini to others, quickly turning one side of the organs flaccid. Because the pulvini can no longer support the leaves and leaflets, this shift results in a corresponding change in their position.

单选题The last half of the nineteenth century ______ the steady improvement in the means of travel. A. told B. declared C. viewed D. witnessed

单选题Husband: Tell you what, dear. I just got promoted. Wife: Really? ______

单选题To succeed in a scientific research project, ______. A. persistence is needed B. persistence is what one needs C. one needs to be persistent D. one needs be a persistent person

单选题A: I'd rather have some wine, if you don't mind. B:______.

单选题He did not find a job yet because he had no ______ to people who could help him. A. approach B. application C. access D. approval

单选题He was said _____ a gift from her, knowing that it meant a bribe.

单选题It's conventional wisdom in the United States that the American education system is a mess. Since the rest of the world loves to criticize Uncle Sam, that view is held even more strongly elsewhere. But wait a minute. If education really is the source of economic success, as experts continually claim, American schools can't be too bad. If they were, the American economy would not be the wonder of the world, able to create good jobs at a pace that others can only envy, and with a huge advantage in many of the key technologies of the next centurey. Specially, American high schools can't be a disaster area. The proof lies in the quality of American universities. In any reasonable ranking of the best 100 universities of the world, the United States would dominate the list. College professors are not alchemists(炼金术士), they cannot turn base metal into gold. (I know; I used to be one.) If the output of American higher education is as good as it seems to be, the input must be a lot better than Americans fear. We can at least be doubtful about some common claims. For example; it's often said that the United States has a skill shortage in high technology -- and the fact that Silicon Valley recruits (征募) heavily around the world is said to be evidence of that. But without more inquiry, we can't know whether this is because American college graduates are stupid, or because that hightechnology sector has grown so fast that it cannot possibly satisfy all its demands for high-level skills from the United States.