单选题In Britain people use up four million tons of potatoes every year.

单选题Henry"s news report covering the conference was so comprehensive that nothing had been omitted.

单选题I"m planning to hold a party in the open air, but I can make no guarantees because it depends on the weather.

单选题Can you spot the {{U}}flaw{{/U}} in their argument?

单选题The word "spectres" in the second paragraph is closest in meaning to

单选题Can you find out the flaw in their research papers?

单选题The waitress showed me to the table we have booked this afternoon.A. invitedB. toldC. ledD. pointed

单选题The performance was pretty impressive.

单选题{{B}}第三篇{{/B}} Common Problems, Common Solutions The chances are that you made up your mind about smoking a long time ago and decided it's not for you. The chances are equally good that you know a lot of smokers — there are, after all about 60 million of them, work with them, and get along with them very well. And finally it's a pretty safe bet that you're open-minded and interested in all the various issues about smokers and non-smokers — or you wouldn't be reading this. And those three things make you incredibly(难以置信的) important today. Because they mean that yours is the voice — not the smoker's and not the anti-smoker's — that will determine how much of society's efforts should go into building walls that separate us and how much into the search for solutions that bring us together. For one tragic result of the emphasis on building walls is the diversion(转移) of millions of dollars from scientific research on the causes and cures of diseases which, when all is said and done, still strike the nonsmoker as well as the smoker. One prominent(卓越的) health organization, to cite(引证) but a single instance, now spends 28 cents of every publicly contributed dollar on "education" (much of it in antismoking propaganda)and only 2 cents on research. There will always be some who want to build wails, who want to separate people from people, and up to a point, even these may serve society. The anti-smoking wall-builders have, to give them their due, helped to make us all more keenly aware of choice. But our guess, and certainly our hope, is that you are among the far greatest number who know that walls are only temporary(暂时的) at best, and that over the long run, we can serve society's interest better by working together in mutual accommodation. Whatever virtue walls may have, they can never move our society toward fundamental solutions. People who work together on common problems, common solutions, can.

单选题It has been said that the Acts provided a new course of action and did not merely regulate or enlarge an old one.

单选题The new type of car is fairly economical of fuel.

单选题All living organisms, regardless of their unique identity, have certain logical, chemical, and physical characteristics in common. A．as a result of B．considering C．on purpose D．whatever

单选题Shoplifters Most shoplifters (商店扒手) agree that the January sales offer wonderful opportunities for the hard-working thief. With the shops so crowded and the staff so busy, it does not require any extraordinary talent to help you to take one or two little things and escape unnoticed. It is known, in the business, as "hoisting". But the hoisting game is not what it used to be. Even at the height of the sales, shoplifters today never know if they are being watched by one of those evil little balls that hang from the ceilings of so many department stores above the most desirable goods. As if that was not trouble enough for them, they can now be filmed at work and obliged to attend a showing of their performance in court. Selfridges was the first big London store to install closed-circuit videotape equipment to watch its sales floors. In October last year the store won its first court case for shoplifting using a evidence a videotape clearly showing a couple stealing dresses. It was an important test case which encouraged other stores to install similar equipment. When the balls, called sputniks, first make an appearance in shops, it was widely believed that their only function was to frighten shoplifters. Their somewhat ridiculous appearances, the curious holes and red lights going on and off, certainly make the theory believable. It did not take long, however, for serious shoplifters to start showing suitable respect. Soon after the equipment was in operation at Selfridges, store detective Brian Chadwick was sitting in the control room watching a woman secretly putting bottles of perfume into her bag. "As she turned to go," Chadwick recalled, "she suddenly looked up at the 'sputnik' and stopped. She could not possibly have seen that the camera was trained on her because it is completely hidden, but she must have had a feeling that I was looking at her." "For a moment she paused, but then she returned to counter and started putting everything back. When she had finished, she opened her bag towards the camera to show it was empty and hurried out of the store./

单选题 Breakfast Studies show that children who eat breakfast do better in school. It doesn't take much further thought to believe that adults will feel better and perform better at work as well. Whether you work at home, on the farm, at the office, at school, or on the road, it is not a good idea to skip (故意略去) breakfast. If we don't eat breakfast, we are likely to become tired when our brains and bodies run low on fuel. By mid-morning, a lot of us grab a cup of coffee, or wolf down a sugary candy bar to wake up again. This might work for a few minutes, but by lunchtime we are hungry, bad-tempered, and perhaps our mood might make us a little more likely to make unhealthy choices at lunch. Eating a good breakfast sets the tone for the rest of the day. People who eat breakfast are generally more likely to maintain a healthy weight. Many people believe that they will lose weight if they skip meals, but that isn't a good idea. The body expects to he refueled a few times a day, so start with a healthy breakfast. A healthy breakfast should contain some protein (蛋白质) and some fiber (纤维). Protein can come from meat, eggs, beans, or soy (大豆). Fiber can be found in whole cereals (谷物), grains or in fruits. A good example of a healthy breakfast might be something simple like a hard boiled egg, an orange, and a bowl of whole grain cereal with soy milk.

单选题It's an {{U}}advisable{{/U}} idea to get out of the dispute. A. wise B. urgent C. useless D. proper

单选题{{B}}第二篇{{/B}} Feast On Turkey and Good Wishes at Thanksgiving Four weeks ago US children dressed as monsters and asked for sweets. That was Halloween. In a few weeks American houses will be red and green and filled with presents for Christmas. As if all this isn't enough, on Thursday this week, America will enjoy another festival—Thanksgiving. Children will have two days off school, shops will close and houses will be filled with families enjoying mountains of food. Every year, in Gainesville, Florida, all entire class celebrates Thanksgiving together. The class dresses up and puts on plays for their families. After the plays the families share a feast of traditional Thanksgiving foods like turkey and pumpkin pie. Dean Foster, an 11-year-old boy will take part in this celebration. He said: "I love Thanksgiving because it means time off school, lots of nice food and a happy family. "His brother Ben, nine, said : "The best thing about Thanksgiving, is that when it is finished, it is time to start Christmas. " But behind the food and the large amount of money spent there is another message. On Thursday evening, Dean and Ben's family will make a basket and put it on the table as they eat their evening meal. Each of them will write a list of things that they are thankful for and place the paper in the basket. The family will read the pieces of paper and take time to thank God and each other for providing them with comfortable and happy lives. Thanksgiving is a traditional festival that started in 1621, when the first pilgrims arrived in the US to start new lire. After a hard year, they had a big autumn harvest. They held a feast and invited the native American Indians along to thank God for giving them enough food. Many countries celebrate Thanksgiving. They often fall after the fields have been harvested and the crops collected for winter.

单选题 Eat More, Weigh Less, Live Longer Clever genetic detective work may have found out the reason why a near-starvation diet prolongs the life of many animals. Ronald Kahn at Harvard Medical School in Boston, US, and his colleagues have been able to extend the lifespan (寿命) of mice by 18 per cent by blocking the rodent’s (啮齿动物) increase of fat in specific cells. This suggests that thinness—and not necessarily diet—promotes long life in "calorie (热量卡) restricted" animals. "It's very coal work," says aging researcher Cynthia Kenyon of the University of California, San Francisco. "These mice eat all they want, lose weight and live longer. It's like heaven." Calorie restriction .dramatically extends the lifespan of organisms as different as worms and rodents. Whether this works in humans is still unknown, partly because few people are willing to submit to such a strict diet. But many researchers hope they will be able to trigger the same effect with a drug once they understand how less .food leads to a longer life. One theory is that eating less reduces the increase of harmful things that can damage cells. But kahn's team wondered whether the animals simply benefit by becoming thin: To find out, they used biology tricks to disrupt the insulin (胰岛素) receptor (受体) gene in lab mice—but only in their fat cells. "Since insulin is needed to help fat cells store fat, these animals were protected against becoming fat," explains Kahn. This slight genetic change in a single tissue had dramatic effects. By three months of age, Kahn's modified mice had up to 70 per cent less body fat than normal control mice, despite the fact that they ate 55 per cent more food per gram of body weight. In addition, their lifespan increased. The average control mouse lived 753 days, while the thin rodents averaged a lifespan of 887 days. After three years, all the control mice had died, but one-quarter of the modified rodents were still alive. "That they get these effects by just manipulating the fat cells is controversial," says Leonard Guarente of the Massachusetts Institute of Technology, who studies calorie restriction and aging.. But Guarente says Kahn has yet to prove that the same effect is responsible for increased lifespan in calorie-restricted animals. "It might be the same effect or there might be two routes to long life," he points out, "and that would be very interesting./

单选题The only way to stop the spread of aerosols in the atmosphere, according to Dr Rasool and Dr Schneider, is to use

单选题A will is a document written to ensure that the wishes of the deceased are realized . ______

单选题The details of the costume were totally authentic.