单选题The boys broke into excited cheering.

单选题During the Second World War, all important resources in the US were {{U}}allocated{{/U}} by the Federal government. A. nationalized B. commandeered C. taxed D. distributed

单选题The manager allocates duties to the clerks.

单选题 Silent and Deadly Transient ischemic attacks (TIAS), or mini-strokes, result from temporary interruptions of blood flow to the brain. Unlike full strokes, they present symptoms lasting anywhere from a few seconds to 24 hours. Rarely do they cause permanent neurological damage, but they are often precursors of a major stroke. "Our message is quite clear," says Dr. Robert Adams, professor of neurology at the Medical College of Georgia in August. "TIAS, while less severe than strokes in the short term, are quite dangerous and need a quick diagnosis and treatment as well as appropriate follow-up to prevent future injury." Unfortunately, mini-strokes are greatly under diagnosed. A study conducted for the National Stroke Association indicates that 2.5% of all adults aged 18 or older (about 4.9 million people in the U. S. ) have experienced a confirmed TIA. An additional 1.2 million Americans over the age of 45, the study showed, have most likely suffered a mini-stroke without realizing it. These findings suggest that if the public knew how to spot the symptoms of stroke, especially mini-strokes, and sought prompt medical treatment, thousands of lives could he saved and major disability could be avoided. The problem is that the symptoms of a mini-stroke are often subtle and passing. Nonetheless, there are signs you can look out for: *Numbness or weakness in the face, arm or leg, especially on one side of the body. *Trouble seeing in one or both eyes. *Confusion and difficulty speaking or understanding. *Difficulty walking, dizziness or loss of coordination. *Severe headache with no known cause. Along with these symptoms, researchers have identified some key indicators that increase your chances of having a full-blown stroke after a TIA: if you're over 60, have experienced symptoms lasting longer than 10 minutes, feel weak and have a history of diabetes. As with many diseases, you can help yourself by changing your lifestyle. The first things you should do are quit smoking, limit your intake of alcohol to no more than a drink or two a day and increase your physical activity. Even those who suffer from high blood pressure or diabetes can improve their odds—and minimize complications if they do have a stroke—by keeping their illness under control. If you experience any of the symptoms, your first call should be to your doctor. It could be the call that saves your life.

单选题How to Use the Sense of Smell Our sense of smell, which we normally take for granted, is nowadays being increasingly used for purposes which might surprise us if we aware of them. One area in which smells are created to achieve particular results is marketing. For some time manufacturers have taken advantage of our sense of smell with regard to household goods. Millions of dollars are spent on product research in the hunt for the right smell as it is believed perfume influnences the way consumers perceive a brand. In a survey in the United States, when people were asked what was the most important factor in their choice of detergent (洗衣粉) , smell was rated highly, above ingredients and price. Now stores are becoming even more direct in their use of smell. The smell of fresh bread in a supermarket tends to encourage people to buy, and people selling their houses are recommended to have coffee being heated when potential buyers arrive. Suddenly smell is becoming big business. One company specializing in the use of smells to attract customers now has many large stores on its own list of customers. They find that when pleasant smells are filtered through a store's air condition system, people tend to spend longer in the store and buy more. Reserch shows that smells can increase people's view of the value of a product. In a test, people looked at the same types of shoes in two rooms--one filled with purified air, the other with a smell of mixed flowers, of the people preferred the shoes in the room with the smell of flowers. In fact, many said they would be prepared to pay up to US$10 more for a pair. Smells also have other potential uses. Some companies are experimenting with different smells to produce different effects in their workers according to the time of day. For example, early in the morning they might put the smell of lemon in the air conditioning system to wake people up. In the middle of the morning, when the atmosphere tends to become more tense, the smell of wood could be used to calm people down. Before lunchtime the smell of melting butter would encourage people to go to lunch on time . After lunch, when people often begin to lose concentration, the smell of mint (薄荷) would increase their alertness.

单选题Domion"s Pizza: The Home-Delivery Leader Domino"s Pizza is the fastest-growing and second -largest pizza (烤披萨饼) chain in the United States, with 3, 000 units and sales of over $1.1 billion in 1986. Domino"s plans to reach 10, 000 units worldwide within the next five years. The keys to Domino"s success are providing customer convenience and emphasizing a basic product line. The firm concentrates on home delivery, the most-rapidly growing segment of the pizza market. The advantages to Domino"s of relying on home delivery versus in-store operations include less seasonality (季节性), less concern for poor weather reducing sales, lower rent, more flexibility in location choice, and customer desirability. Domino"s home-delivery strategy focuses on two basic items, a standard-sized pizza with a range of toppings and limited beverage selection; this makes it easier to handle the rush. Each outlet has a small delivery area and promises a piping-hot (滚烫的) pizza within 30 minutes. If the pizza is delivered between 30 and 45 minutes, there is a price reduction; if it takes more than 45 minutes to be delivered, it is free. Domino"s stores are small, containing just work space, ovens, and storage space, and utilize a common layout. Two-thirds of the stores are franchised; company-owned outlets often serve as training centers for future franchisees. Personnel promotions are from within the organization. Many employees begin as drivers who climb up through several levels of store supervision prior to becoming store manager. Company store managers are given 20 per cent of their stores" profits as an incentive. Franchisees are usually selected from store managers Franchisees only need a personal net worth of $10, 000 to $12, 000 to open their first store. The balance of startup costs of $ 55, 000 to $135, 000 is financed by the company at market interest rates. The average age of a Domino"s franchisee is 23, and most franchisees eventually buy a number of stores. The average store generates weekly sales of $ 8, 000; profit margins are 15 per cent of sales. These are some of the potential challenges now facing Domino"Other pizza chains are in the process of entering the home-delivery market. This will intensify Domino"s competition, but will also increase consumer use of home delivery Domino"s needs to expand in metropolitan areas where retail space is more costly and there are more pizza outlets. It is encountering difficulty in hiring teenage employees at the minimum wage.

单选题American officials have announced rules to help prevent people from getting sick from the medicines they take. The rules require the medicines Americans use most to have information that is easy to read and understand. The officials say the new system will help people make more informed decisions about the drugs they use. More and more people use medicines known as over-the counter drugs to treat common health problems. Americans buy 5', 000,000,000 such products each year. About 100,000 over-the-counter drugs can be purchased in the United States without orders from a doctor. Many people decide on their own which drug to take, how to take it, and if it should be given to their children. Over-the-counter drugs are generally very safe. However, using them the wrong way can be dangerous. Officials say hospitals in the United States treat 170,000 people each year because the drugs make them sick. Studies estimate that half of these hospital visits could be prevented if Americans were better educated about the products. The Food and Drug Administration proposed the new rules two years ago. FDA officials say they worked with the drug industry and public interest groups to develop the requirements. The agency also received almost 2,000 public comments about the proposals. The new information should make it easier for people to identify active chemicals used in a medicine. This information will be listed at the top of the product container. The label also will list uses of the drug, warnings, and directions. Chemicals in the drug which are not active also will be listed. The reason for this is to let Americans select products that will not make them sick.

单选题During his lifetime he was able to accumulate quite a fortune.

单选题Look After Your Voice Often speakers at a meeting experience dry mouths and ask for a glass of water. You can solve the problem by activating the saliva in you mouth. First gently bite the edges of your tongue with your teeth. Or press your entire tongue to the bottom of your mouth and hold it there until the saliva flow. Or you can imagine that you are slicing a big juicy lemon and sucking the juice. Before you begin your talk, be kind to your voice. Avoid milk or creamy drinks which coat your throat. Keep your throat wet by drinking a little sweetened warm tea or diluted fruit juice. If you sense that your are losing your voice, stop talking completely. Save your voice for your speech. You may feel foolish using paper to write notes, but the best thing you can do is to rest your voice. If you need to see a doctor, perhaps you can get some advice from a professional singer. In the meantime, do not even talk in a low voice. What about drinking alcohol to wet your throat? I advice you not to touch alcohol before speaking. The problem with alcohol is that one drink gives you a little confidence. The second drink gives you even more confidence. Finally you will feel all-powerful and you will feel you can do everything, but in fact your brain and your mouth do not work together properly. Save the alcohol until after you finish speaking. Perhaps you want to accept the advice, but you may wonder if you can ever change the habits of a lifetime. Of course you can. Goethe, who lived before indoor skating rinks or swimming pools, said, "We learn to skate in the summer and swim in the winter. "Take this message to heart and give yourself time to develop your new habits. If you are willing to change, you will soon be able to say that you will never forget these techniques because they became a part of your body.

单选题In short , I am going to live there myself.

单选题Their talents are not only enormous but {{U}}durable{{/U}}.

单选题The nurses in a hospital usually spend more time with the patients than the physicians.

单选题Common -cold Sense You can't beat it, but you don't have to join it. Maybe it got the name "common cold" because it' s more common in winter. The fact is, though, being cold doesn' t have anything to do with getting one. Colds are caused by the spread of rhinoviruses, and, at least SO far, medical science is better at telling you how to avoid getting one than how to get rid of one. Children are the most common way cold viruses are spread to adults, because they have more colds than adults - an average of about eight per year. Why do kids seem so much more easily to get colds than their parents? Simple. They haven' t had the opportunity to become immune to many cold viruses. There are more than 150 different cold viruses, and you never have the same one twice. Being infected by one makes you immune to it- but only it. Colds are usually spread by direct contact, not sneezing or coughing. From another person' s hand to your hand and then to your nose or eyes is the most common route. The highest concentration of cold viruses anywhere is found under the thumbnails of a boy, although the viruses can survive for hours on skin or other smooth surfaces. Hygiene is your best defense. Wash your hands frequently, preferably with a disinfectant soap, especially when children in your household have colds. But even careful hygiene won' t ward off every cold. So, what works when a coughing, sneezing, runny nose strikes? The old prescription of two aspirins, lots of water, and bed rest is a good place to start. But you'll also find some of the folk remedies worth trying. Hot mixtures of sugar( or honey), lemon, and water have real benefits.

单选题Europeans established permanent colonies on the eastern shores of what is now the United States throughout the seventeenth century.A. duringB. beforeC. up untilD. just after

单选题Practically all animals communicate either through sounds or through soundless codes. A. Certainly B. Probably C. Almost D. Absolutely

单选题Jean has made up her mind not to go to the meeting.A. promisedB. triedC. decidedD. attempted

单选题Paragraph 2______

单选题 Cost as a Factor in Supply In a purely competitive market, the supplier of goods and services has no control over the market price, because he produces too little to influence market conditions. With no difference between his products and the products {{U}} {{U}} 1 {{/U}} {{/U}}his competitors, he will sell nothing if he charges above the market price and he will sell all if he charges at or {{U}} {{U}} 2 {{/U}} {{/U}}the market price. However, in considering the price, he must take the {{U}} {{U}} 3 {{/U}} {{/U}}of production into consideration. There are times when he may be willing to sell below his cost. This might happen when prices tumble for {{U}} {{U}} 4 {{/U}} {{/U}}he believes will be a short time. However, no business person can {{U}} {{U}} 5 {{/U}} {{/U}}to lose money for a prolonged period. He must be constantly {{U}} {{U}} 6 {{/U}} {{/U}}of his costs in relation to the market price if he is to competes successfully and earn a profit. Many people have the impression that as production increases, costs per unit decrease. {{U}} {{U}} 7 {{/U}} {{/U}}mass production has made this true in certain industries and at certain levels of production, {{U}} {{U}} 8 {{/U}} {{/U}}logic and practical experiences have shown that costs per unit begin to rise beyond a certain level of production. Some economists {{U}} {{U}} 9 {{/U}} {{/U}}to this principle as the law of increasing costs. The reason costs rise as production goes up is {{U}} {{U}} 10 {{/U}} {{/U}}. However, it is easy to recognize that as production goes up, the need for additional factors of production will also grow, {{U}} {{U}} 11 {{/U}} {{/U}}competitive bidding in the marketplace for the factors of production. If a producer needs {{U}} {{U}} 12 {{/U}} {{/U}}skilled labor to produce more, and none of this labor is unemployed, the producer will have to get {{U}} {{U}} 13 {{/U}} {{/U}}from other sources. This can be done by {{U}} {{U}} 14 {{/U}} {{/U}}higher wages. Higher bidding would also apply to the other factors of production. We must also recognize that not all labor is equally productive, {{U}} {{U}} 15 {{/U}} {{/U}}not all land is equally fertile and not all ore (矿石) is equally rich in the mineral wanted.

单选题John Utalked over/U the new job with his wife.

单选题Will Hillary Be the Next American President? Back in 1969, US President Richard Nixon confidently predicted, "In the next 50 years, we shall see a woman president, perhaps sooner than you think." Today, not too far off Nixon's deadline, America is looking at that possibility. Over the weekend, Hillary Rodham Clinton, wife of former president Bill Clinton, announced her run for 2008 presidency. U.S. polls indicate that Americans feel comfortable with a female president. A New York Times survey found nearly all Americans saying they would vote for president if she were qualified. However, accepting the theoretical notion of a female leader is quite different from voting an actual woman. In fact, there is still widespread distrust of a woman in the top position. This is partly due to the biased thinking that women are weak on national security, though they might be strong on education and health care. This damages their prospects as a presidential contender. "There's still an inherent nervousness on the part of voters putting a woman in as the ultimate decision-maker. Control of the army and border security are sorts of traditionally male jobs." commented Amy Walter, an American campaign analyst. "That's where I think voters consciously or unconsciously have difficulties with women candidates." Women have held the top job in other major Western countries. In 1979, Britain elected Margaret Thatcher prime minister. Last year, Germany made Angela Merkel its first female chancellor. In the U.S., no woman has succeeded in being nominated as a presidential candidate. One woman did make the attempt: Elizabeth Dole. In 1999, she tried to get the Republican Party nomination. But Dole could only raise $5 million for her bid-compared with the $56 million George W. Bush raised. So Barriers lie ahead for Hillary if she wants to make history by becoming the first female U.S. president. With the Iraqi war underway, she'll find it even harder. "I don't feel that our society is ready for a woman president. The enemy we face does not respect females the same way we have come to see them as equals. If we were not in this war, I would support a woman president," said Chris Dildy, a computer engineering student.