填空题下面的短文有5处空白，短文后有6个句子，其中5个取自短文，请根据短文内容将其分别放回原有位置，以恢复文章原貌。 Little Lady Starts Big War Harriet Beecher Stowe had poured her heart into her anti-slavery(反对奴隶制度) book Uncle Tom's Cabin. {{U}}(46) {{/U}} The publisher was so doubtful that he wanted her to split the publishing costs with him, and all she hoped was that it would make enough money for her to buy a new silk dress. But when the first 5,000 copies were printed in 1852, they sold out in two days. In a year the book had sold 300,000 copies in the United States and 150,000 in England. {{U}}(47) {{/U}} Within six months of its release, a play was made from the book which ran 350 performances in New York and remained America's most popular play for 80 years. It might appear that Uncle Tom's Cabins was universally popular, but this was certainly not true, Many people during those pre-Civil War days' -- particularly defenders of the slavery system -- condemned it as false propaganda(宣传) and poorly written melodrama (传奇剧作品). Harriet did have strong religious views against slavery (When asked how she came to write the book, she replied : "God wrote it. "), and she tried to convince people slavery was wrong, so perhaps the book could be considered propaganda. {{U}}(48) {{/U}} Though she was born in Connecticut in 1832, as a young woman she moved to Cincinnati, Ohio, when her father accepted the presidency (任期) of newly founded Lane Theological Seminary (神学院). Ohio was a free state, but just across the Ohio River in Kentucky, Harriet saw slavery in action. She lived 18 years in Cincinnati, marrying Calvin Stowe, professor of a college. {{U}}(49) {{/U}} {{U}} (50) {{/U}} Today some historians (历史学家) think that it helped bring on the American Civil War. In fact, when Abraham Lincoln met Harriet at the White House during the Civil War, he said, "So, this is the little lady who started this big war. " A. She had read a lot about the slavery system. B. Its vast influence strengthened the anti-slavery movement and angered defenders of the slave system. C. But if so, it was true propaganda, because it accurately described the evils of slavery. D. For a while it outsold every book in the world, except the Bible. E. But neither she nor her first publisher thought it would be a big success. F. In 1851, Harriet Beecher Stowe began her book.

填空题A Heroic Woman The whole of the United States cheered its latest hero, Ashley Smith, with the Federal Bureau of Investigation saying it was planning to give a big reward to her for having a brave heart and wise mind. (1) She was moving into her apartment in Atlanta, Georgia early on the morning of March 12, when a man followed her to her door and put a gun to her side. "I started walking to my door, and I felt really, really afraid," she said in a TV interview last week. The man was Brian Nichols, 33. He was suspected of killing three people at an Atlanta courthouse (法院) on March 11 and later of killing a federal agent. (2) Nichols tied Smith up with tape, but released her after she repeatedly begged him not to take her life. "I told him if he hurt me, my little girl wouldn't have a mummy," she said. In order to calm the man down, she read to him from "The Purpose-Driven Life", a best- selling religious book. He asked her to repeat a paragraph "about what you thought your purpose in life was—what talents were you given. " (3) "I basically just talked to him and tried to gain his trust," Smith said. Smith said she asked Nichols why he chose her. "He said he thought I was an angel sent from God, and we were Christian sister and brother," she said. "And that he was lost, and that God led him to me to tell him that he had hurt a lot of people. " (4) She said Nichols was surprised when she made him breakfast and that the two of them watched television coverage (报道) of the police hunt for him. "I cannot believe that's me," Nichols told the woman. Then, Nichols asked Smith what she thought he should do. She said, "I think you should turn yourself in. If you don't, lots more people are going to get hurt. " Eventually, he let her go. (6) A．US $60,000 reward had been posted for Nichols' capture. Authorities said they did not yet know if Smith would be eligible (有资格的) for that money. A．The local police were searching for him. B．Smith is a 26-year-old single mother with a daughter. C．Smith tried very hard to kill Nichols. D．She even cooked breakfast for the man before he allowed her to leave. E．And the two of them discussed this topic. F．Then she called the police.

填空题 Watching Microcurrents Flow We can now watch electricity as it flows through even the tiniest circuits. By scanning (扫描) the magnetic field (磁场) generated as electric currents flow through objects (物体), physicists have managed {{U}} {{U}} 1 {{/U}} {{/U}}. The technology will allow manufacturers to scan microchips for faults, as well as revealing microscopic defects in anything from aircraft to banknotes. Gang Xiao and Ben Schrag at Brown University in Providence, Rhode Island, visualize the current by measuring subtle (细微的) changes in the magnetic field of an object and {{U}} {{U}} 2 {{/U}} {{/U}}. Their sensor is adapted from an existing piece (现有配件) of technology that is used to measure large magnetic fields in computer hard drives. "We redesigned the magnetic sensor to make it capable of measuring (测量) very weak changes in magnetic fields," says Xiao. The resulting device is capable of detecting (测定) a current as weak as 10 microamperes, even when the wire is buried deep within a chip, and it shows up features (图案) as small as 40 nanometers across. At present, engineers looking for defects (缺陷) in a chip have to peel off (剥开) the layers and examine the circuits visually; this is one of the obstacles {{U}} {{U}} 3 {{/U}} {{/U}}. But the new magnetic microscope is sensitive enough to look inside chips and reveal faults such as short circuits, nicks in the wires or electro migration (电迁徙)—where a dense area of current picks up surrounding atoms and moves them along. "It is like watching a river flow," explains Xiao. As well as scanning tiny circuits, the microscope can be used to reveal the internal structure of any object capable of conducting electricity. For example, it could look directly at microscopic cracks in an airplane's fuselage, {{U}} {{U}} 4 {{/U}} {{/U}}. The technique cannot yet pick up electrical activity in the human brain because the current there is too small, but Xiao doesn't rule it out (排除……的可能性) in the future. "I can never say never," he says. Although the researchers have only just made the technical details of the microscope public, it is already on sale (上市), from electronics company Micro Magnetics in Fall River, Massachusetts. It is currently the size of a refrigerator and takes several minutes to scan a circuit, but Xiao and Schrag are working {{U}} {{U}} 5 {{/U}} {{/U}}. A．to shrink it to the size of a desktop computer and cut the scanning time to 30 seconds B．to making chips any smaller C．to take tiny chips we require D．to picture the progress of the currents E．converting the information into a color picture showing the density of current at each point F．faults in the metal strip of a forged banknote or bacteria in a water sample

填空题Leslie's 10-year-old sister Aubyn asked how many foster children there were in the area and found out that there were 300. Most of those children had to carry their things from place to place in plastic or paper bags. Leslie's concern and the thought of those 300 children inspired young Aubyn to take action. Aubyn decided to ask people to donate their old suitcases to these foster children. ______ But after a few weeks, she had not received any donations.A. Charles and Isaac Meadows, ages 14 and 11, and Well and Burnside, Aubyn's 8-year-old brother, got involved with the project in its early stages.B. She began making and hanging posters, speaking at churches, and asking other children for help.C. Aubyn inspired other kids to help with the cause too.D. Eventually, Aubyn's humanitarian efforts were noticed by the media.E. By its sixth year, the little organization reached international status, having chapters in more than ten countries.F. That's how Aubyn Burnside founded her program, Suitcases for Kids.

填空题Electromagnetic Energy 1. White light seems to be a combination of all colors. The energy that comes from a source of light is not limited to the kind of energy you can see. Heat is given off by a flame or an electric light. On a cloudy day it is possible to get a sunburn even though you feel cool. Visible light and the kinds of energy that produce warmth and sunburn are examples of electromagnetic energy. 2. The sun is 93 million miles from the earth. Yet we can use energy from the sun because electromagnetic energy travels through space. 3. Many other kinds of energy are also types of electromagnetic energy. Radio, television, and radar signals travel from transmitters to receivers as low-energy electromagnetic waves. Infrared (红外线的) radiation is an electromagnetic wave. When it is absorbed by matter, heat is produced. Waves of infrared and visible light have more energy than waves of radio, television, or radar. Ultraviolet rays (红外线) and X-rays are electromagnetic waves with even greater amounts of energy. Infrared radiation is used in cooking food and heating buildings. Sunlight and electric lights are part of our requirements for normal living. Ultraviolet radiation is useful in killing certain disease organisms. X-rays and gamma rays have so much energy that they travel right through solid objects. They can be used to detect and treat cancer. X-rays are used in industry to find hidden cracks in metal, and in medicine to reveal broken bones. 4. Usually we use electricity to generate electromagnetic energy. The source of most of our energy is the sun. Heat from the sun causes water to evaporate. When the water falls to the earth as rain, some of it is trapped behind dams and then used to operate electric generators. Other generators are powered by coal, but the energy stored in coal came from the sun, too. 5. Until recently, the source of the tremendous amount of energy given off by the sun was a puzzle. If the sun depended on chemical reactions, it would have used up all its energy long ago. Experiments with electromagnetic radiation led to the theory that mass can be converted into energy. About forty years after the theory was proposed, nuclear energy was harnessed (利用) by man. Chemical energy comes from electron (电子) rearrangement. Nuclear energy comes from a change in the nucleus of an atom. Compared with chemical reactions, nuclear reactions release millions of times more energy per pound of fuel. We now believe that the sun's energy comes from the nuclear reactions in which hydrogen is changed into helium (氦). 6. Nuclear energy is beginning to compete with coal as an economical source of power to generate electricity. It is also being used to operate engines in large ships. Scientists continue to seek new and better methods of obtaining and using energy.

填空题Heat Is Killer Extremely hot weather is common in many parts of the world. Although hot weather just makes most people feel hot, it can cause serious medical problems--even death. Floods, storms, volcano eruptions and other natural disasters kill thousands of people every year: (46) Experts say heat may be nature's deadliest killer. Recently, extreme heat was blamed for killing more than one hundred people in India. It is reported that the total heat of a hot day or several days can affect health. (47) . Experts say heat waves often become dangerous when the nighttime temperature does not drop much from the highest daytime temperature. This causes great stress on the human body. (48) out of the sun, if possible. Drink lots of cool water. Wear light colored clothing made of natural materials; avoid wearing synthetic clothing. Make sure the clothing is loose, permitting freedom of movement. And learn the danger signs of the medical problems, such as headache and vomiting that are linked to heat. Most people suffer only muscle pain as a result of heat stress. (49) . Pain is a warning that the body is becoming too hot. Doctors say those suffering headache or muscle pain should stop all activity and rest in a cool place and drink cool liquids. Do not return to physical activity for a few hours because more serious conditions could develop: Doctors say some people face an increased danger from heat stress. (50) . Hot weather also increases dangers for people who must take medicine for high blood pressure, poor blood flow, nervousness or depression.A. Such persons have a weak or damaged heart, high blood pressure, or other problems of the blood system.B. Several of these conditions are present at the same time.C. Most people suffer only muscle pain as a result of heat stress.D. Several hot days are considered a heat wave.E. So does extreme heat.F. Doctors say people can do many things to protect themselves from the dangers of extreme heat.

填空题 阅读下面的短文，文章中有5处空白，文章后面有6组文字，请根据文章的内容选择5组文字，将其分别放回文章原有位置，以恢复文章原貌。 {{B}}Development in Newspaper Organization{{/B}} One of the most important developments in newspaper organization during the first part of the twentieth century {{U}}(46) {{/U}}, which are known as wire services. Wire-service companies employed reporters, who covered stories all over the world. Their news reports were sent to papers throughout the country by telegraph. The papers paid an annual fee for this service. Wire services continue {{U}}(47) {{/U}}. Today the major wire services are the Associated Press (AP) and United Press International (UPI). You will frequently find AP or UPI at the beginning of a news story. Newspaper chains and mergers began to appear in the early 1900s. A chain consists of two or more newspapers {{U}}(48) {{/U}}. A merger involves combining two or more papers into one. During the nineteenth century many cities had more than one competitive independent paper. Today in most cities there are only one or two newspapers, and {{U}}(49) {{/U}}. Often newspapers in several cities belong to one chain. Papers have combined {{U}}(50) {{/U}}. Chains and mergers have cut down production costs and brought the advantages of big-business methods to the newspaper industry.A. to play an important role in newspaper operationsB. was the growth of telegraph servicesC. and they usually enjoy great prestigeD. they are usually operated by a single ownerE. in order to survive under the pressure of rising costsF. owned by a single person or organization

填空题Every Dog Has Its Say Kimiko Fukuda, a Japanese girl, always wondered what her dog was trying to say. Whenever she put on makeup, it would pull at her sleeve. 1 When the dog barks, she glances at a small electronic gadget (装置). The following "human" translation appears on its screen: "Please take me with you." "I realized that"s how he was feeling." said Fukuda. The gadget is called Bowlingual, and it translates dog barks into feelings. People laughed when the Japanese toymaker Takara Company made the world"s first dog-human translation machine in 2002. But 300,000 Japanese dog owners bought it. 2 "Nobody else had thought about it," said Masahiko Kajita, who works for Takara, "We spend so much time training dogs to understand our orders; what would it be like if we could understand dogs?" Bowlingual has two parts. 3 The translation is done in the gadget using a database (资料库) containing every kind of bark. Based on animal behavior research, these noises are divided into six categories: happiness, sadness, frustration, anger, declaration and desire. 4 In this way, the database scientifically matches a bark to an emotion, which is then translated into one of 200 phrases. When a visitor went to Fukuda"s house recently, the dog barked a loud "bow wow". This translated as "Don"t come this way" 5 The product will be available in US pet stores this summer for about US $120. It can store up to 100 barks, even recording the dog"s emotions when the owner is away. A. A wireless microphone is attached to the dog"s collar, which sends information to the gadget held by the owner. B. Nobody really knows how a dog feels C. It was followed by "I"m stronger than you" as the dog growled (嗥叫) and sniffed (嗅) at the visitor D. More customers are expected when the English version is launched this summer E. Now, the Japanese girl thinks she knows. F. Each one of these emotions is then linked to a phrase like "Let"s play", "Look at me", or "Spend more time with me".

填空题A Star Is Born 1. The VLT(Very Large Telescope)is the world"s largest telescope (望远镜) and is taking astronomers (天文学家) further back to the Big Bang than they ever thought possible. Located 2,600 metres up to the Chilean Andes, it has four huge mirrors, each about the size of a London bus. The VLT is so powerful it can spot a burning match 10,000 kilometres away. 2. This astonishing power will allow astronomers to see events in space from the birth of stars to the collision (碰撞) of galaxies (星系) on the edge of the cosmos (宇宙). The VLT is giving astronomers their best-ever view of the cosmos. The power of the VLT to see the smallest detail at the furthest distances makes its designers amazed. 3. Take the case of Eta Carinae, one of the most explosive stars in the universe. This star produces ultraviolet laser rays (紫外线) and it will destroy itself in a few million years" time. It is five times brighter than the sun and when it explodes it is going to be a sight worth waiting for! 4. But it is at distances of millions, even billions, of light years that the VLT really shows its power. The VLT can detect light that set out on its journey before the earth even existed. This gives astronomers their first—ever detailed views of events that took place in the earliest days of the cosmos. 5. In other words, the VLT is a kind of a time machine. It takes astronomers back to a time when complete galaxies crashed into each other. The effects of these past collisions can now be seen by scientists, and astronomers believe the telescope will reveal more about these exciting events in the years to come. One day, we might be able to say we have traveled back to the beginning of time, and we will have a much clearer picture of how our planet was born.

填空题It wasn't so long ago that the idea of a college romance playing out online-for better or for worse-would have been deemed weird, nerdy, or just plain pathetic. ______ But then MySpace came along, and Facebook took over-and today, courtship has become a flurry of status messages, e-mail flirtation, and, not so uneommonly; breakups that play out publicly for all 400 of your not-so-closest friends. And while a Facebook split is clearly not the ideal, Katie Vojtko has been on the other side of it, too: she ended a recent romance through an e-mail-to which she never heard back. "It's not something I'm proud of," says the 22-year-old, who graduated in April. "But technology just makes dating so much easier."A. It's easier to approach each other, to talk casually, to get to know one another and feel out romantic potential without ever having to truly put themselves out there.B. "And you don't even have to be on the computer to engage in it."C. They can see where that person grew up, their political interests, whether they're "looking for a relationship" or only interested in" hooking up."D. As the thinking went, if you had to go to the Web to find a, mate, or break up with one, it must have meant you weren't capable of attracting anyone in the real world.E. Now a relationship may still begin by locking eyes across a crowded bar, but instead of asking for a phone number, the next step almost surely involves a Facebook friendship offer.F. David Hein zinger, a 24-year-old new-media specialist in New York, recently asked a girl hemet at a happy hour to dinner.

填空题 阅读下面的短文，文章中有5处空白，文章后有6组文字，请根据文章的内容选择5组文字，将其分别放回文章原有位置，以恢复文章原貌。 {{B}}Home Schooling{{/B}} All children in the United States have to receive an education, but the law does not say they have to be educated at school. A number of parents prefer not to send their children to school.{{U}} (1) {{/U}}There are about 300,000 home-schoolers in the United States today. Some parents prefer teaching their children at home because they do not believe that public schools teach the correct religious values; others believe they can provide a better educational experience for their children by teaching them at home.{{U}} (2) {{/U}} David Gtisterson and his wife teach their three children at home. Guterson says that his children learn very differently from children in school.{{U}} (3) {{/U}}For example, when there is heavy snowfall on a winter day, it may start a discussion or reading about climate, snow removal (去除) equipment, Alaska, polar bears (北极熊), and winter tourism. A spring evening when the family is out watching the stars is a good time to ask questions about satellites and the space program.{{U}} (4) {{/U}} Home schooling is often more interesting than regular schools, but critics say that home-schoolers are outsiders who might be uncomfortable mixing other people in adult life.{{U}} (5) {{/U}}However, most parents don't have the time or the desire to teach their children at home, so schools will continue to be where most children get their formal education. A. Interestingly, results show that home-schooled children quite often do better than average on national tests in reading and math. B. Critics also say that most parents are not well qualified to teach their children. C. Learning starts with the children's interests and questions. D. Children who are educated at home are known as "home-schoolers". E. In some countries, however, children are educated by their parents. E If the Brazilian rain forests are on the TV news, it could be a perfect time to talk about how rain forests influence the climate, and how deserts are formed.

填空题A. Online storesB. Differences from iPhoneC. Display and data connectionD. Business usageE. Features and applicationsF. Operating system

填空题下面的短文有5处空白，短文后有6个句子，其中5个取自短文，请根据短文内容将其分别放回原有位置，以恢复文章原貌。 Houses of the Future What will houses be like in thirty years'time?No one really knows，but architects are trying to predict．{{U}} (46) {{/U}} Future houses will have to be flexible．In thirty years'time even more of us will be working from home．So we will have to be able to use areas of the house for work for part of the day and for living for the rest．Families grow and change with children arriving，growing up and leaving home．{{U}} (47) {{/U}} Nothing will be as fixed as it is now．The house will always be changing to meet changing needs． Everyone agrees that in thirty years'time we will be living in“intelligent”houses．We will be able to talk to our kitchen machines and discuss with them what to do．Like this：“We'll be having a party this weekend．What food shall we cook?”{{U}} (48) {{/U}}We will be able to leave most of the cooking to the machines，just tasting things from time to time to check． The house of the future will be personal-each house will be different．{{U}} (49) {{/U}}You won't have to paint them-you'll be able to tell the wall to change the color!And if you don't like the color the next day，you will be able to have a new one．{{U}} (50) {{/U}} A．You will be able to change the color of the wall easily． B．The only thing you won't be able to do is move the house somewhere else! C．And the machine will tell us what food we will have to buy and how to cook it． D．What will our home be like then? E．The house of the future will have to grow and change with the family． F．The kids might take their bedrooms with them as they leave．

填空题Every year thousands of grey whales make the longest migration of any animal, traveling 7,000 miles each way between the Arctic and Baja, California. The grey whales spend the long summer days in their Arctic feeding grounds in the Bering Sea between Alaska and Russia. Unlike a fish, the whale is warm-blooded and must therefore maintain a relatively high internal body temperature. In the cold Arctic waters the grey whale is protected by an outer layer of blubber which averages six inches in thickness. Other whales such as the Greenland Night whale have been found with a two-foot thick layer of blubber covering their bodies.2. During these summer months, in the Arctic the grey whales fatten themselves by consuming enormous quantities of small shrimp-like animals called amphipods. Recent observations of a young grey whale, Gigi Ⅱ, held in captivity at Sea World in San Diego during 1971 and 1972, suggest that the grey whale feeds by sweeping its enormous head over the bottom. The amphipods on which it feeds are either stirred off the bottom or leap off the bottom to escape. These animals and the surrounding water are sucked into the whale's mouth. As the water is expelled from the mouth, it passes through coarse baleen fibres. The small animals are trapped and swallowed.3. In October as the days get shorter and ice begins to form over the Arctic feeding grounds, the California grey whale begins its long journey south to the warm waters of Baja, California. During this three-month long trip the whales travelling in groups stay close to the shore of North America, swimming both day and night and averaging abut 100 miles per day.4 During the trip south the grey whales that are sexually mature, at least three years old, and not pregnant already, form mating groups. These groups are composed of three whales, two males and a female. The dominant male couples with the female while the second male is kept busy positioning the two whales on their sides facing each other and keeping them together during the sex act. This is no small job, since each whale can be fifty feet long and weigh forty tons.5. During December and January the grey whales arrive at the warm lagoons along the coast of Baja, California. The whales swim miles inland along narrow shallow channels. These channels are the breeding grounds of the California grey whale. The calf has been gestating in the pregnant female for the last thirteen months, that is, since her last journey south. The expectant cow is aided in the birth of the calf by another female that acts as a midwife. At birth the calf sinks toward the sea floor. Being a mammal the whale must breathe at the surface. The midwife guides the baby whale to the surface for its first gulp of air. The calf then finds its mother's nipples and rich whale milk is forced into its mouth. During the next two months the calf will grow twenty feet and double its weight.6. In March the whales begin their long journey north to the Arctic. The newly-pregnant females leave first, following by the males and immature females. The last to leave the warm waters of Baja are the females and their calves. The whales arrive at their Arctic feeding ground in June. Many scientists believe that during this entire eight month long, 14,000 mile journey, the California grey whale does not feed at all!

填空题Strong emotions can make it hard to think and to solve problems. They may prevent a person from learning or paying attention to what he is doing. ______ The worry drains valuable mental energy he needs for the examination.A. Emotions, however, may be weak or strong.B. In order to feel happy, the person may choose unusual ways to avoid the emotion.C. An emotion does not have to be created by something in the outside world.D. A growing child not only learns his emotions but learns how to act in certain situations because of an emotion.E. For example, a student taking an examination may be so worried about failing that he cannot think properly.F. Negative emotions make a person unhappy or dissatisfie

填空题 A. be costly B. harmful C. save a life D. still open to debate E. reduce the risk of radiation triggering a cancer F. reduced to the minimum

填空题 下面的短文有5处空白，短文后有6个句子，其中5个取自短文，请根据短文内容将其分别放回原有位置，以恢复文章原貌。 {{B}} Mind Those Manners on the Subway{{/B}} So, there you are, just sitting there in the subway car, enjoying that book you just bought. {{U}}(46) {{/U}} Or, the person sitting next to you takes out a nail clipper (指甲刀) and begins cutting his or her nails. Annoying? Many of us have to spend some time every day on public transportation. {{U}}(47) {{/U}} So, to make the trip more pleasant, we suggest the following: Let passengers get off the bus or subway car before you can get on.{{U}} (48) {{/U}} Stand away from the doors when they are closing. Don't talk loudly on a bus or subway. Chatting loudly with your friends can be annoying to others.{{U}} (49) {{/U}}. Don't think your bags and suitcases (手提箱) deserve a seat of their own. Use a tissue whenever you cough or sneeze (打喷嚏). An uncovered sneeze can spread germs (细菌), especially in crowded places. Don't cut your nails or pick your nose on public transportation. Don't read over other people's shoulder. {{U}}(50) {{/U}} It can make people uncomfortable. They might think you're too stingy (小气的) even to buy a newspaper. Or they might think you're' judging their behavior.A．Don't eat food in your car.B．Don't shout into your mobile phone on a bus or subway.C．We all know that some behaviors are simply unacceptable.D．Many people do this on subways, but it's really annoying.E．Getting off and on in an orderly manner can save time for all.F．Suddenly, you feel someone leaning over your shoulder reading along with you.

填空题The Weight Experiment Nicola Waiters has been taking part in experiments in Scotland to discover why humans gain and lose weight. Being locked in a small room called a "calorimeter" (热量测量室) is one way to find out . 1．The signs above the two rooms read simply "Chamber One" and "Chamber Two". These are the calorimeters: 4m by 2m white-walled rooms where human volunteers are locked up in the name of science. Outside these rooms another sign reads "Please do not enter—work in progress" and in front of the rooms advanced machinery registers every move the volunteers make. Each day, meals measured to the last gram are passed through a hole in the wall of the calorimeter to the resident volunteer. 2．Nicola Waiters is one of twenty volunteers who, over the past eight months, have spent varying periods inside the calorimeter. Tall and slim, Nicola does not have a weight problem, but thought the strict diet might help with her training and fitness programme. A self-employed community dance worker, she was able to fit the experiment in around her work. She saw an advert for volunteers at her local gym and as she is interested in the whole area of diet and exercise, she thought she would help out. 3．The experiment on Nicola involved her spending one day on a fixed diet at home and the next in the room. This sequence was repeated four times over six weeks. She arrived at the calorimeter at 8:30 am on each of the four mornings and from then on everything she ate or drank was carefully measured. Her every move was noted too, her daily exercise routine timed to the last second. At regular intervals, after eating, she filled in forms about how hungry she felt and samples were taken for analysis. 4．The scientists help volunteers impose a kind of order on the long days they face in the room. "The first time, I only took one video and a book, but it was OK because I watched TV the rest of the time," says Nicola. And twice a day she used the exercise bike. She pedaled (踩踏板) for half an hour, watched by researchers to make sure she didn't go too fast. 5．It seems that some foods encourage you to eat more, while others satisfy you quickly. Volunteers are already showing that high-fat diets are less likely to make you feel full. Believing that they may now know what encourages people to overeat, the researchers are about to start testing a high-protein weight-loss diet. Volunteers are required and Nicola has signed up for further sessions.

填空题Home Schooling All children in the United States have to receive an education, but the law does not say they have to be educated at school. A number of parents prefer not to send their children to school. (46) There are about 300,000 home-schoolers in the United States today. Some parents prefer teaching their children at home because they do not believe that public schools teach the correct religious values; others believe they can provide a better educational experience for their children by teaching them at home. (47) David Guterson and his wife teach their three children at home. Guterson says that his children learn very differently from children in school. (48) For example, when there is heavy snowfall on a winter day, it may start a discussion or reading about climate, snow removal equipment, Alaska, polar bears and winter tourism. Or a spring evening when the family is out watching the stars is a good time to ask questions about satellites and the space program. (49) Home schooling is often more interesting than regular schools, but critics say that home-schoolers are outsiders who might be uncomfortable mixing with other people in adult life. (50) However, most parents do not have the time or the desire to teach their children at home, so schools will continue to be where most children get their formal education.A. Interestingly, results show that home-schooled children quite often do better than average on national tests in reading and math.B. Critics also say that most parents are not well qualified to teach their children.C. Learning starts with the children's interests and questions.D. Children who are educated at home are known as "home-schoolers".E. In some countries, there are children who are educated by their parents at home instead of by teachers at school.F. If the Brazilian rain forests are on the TV news, it could be a perfect time to talk about how rain forests influence the climate, how deserts are formed, and how the polar ice caps affect ocean level.

填空题下面的短文后有2项测试任务：(1)第23～26题要求从所给的6个选项中为第2～5段每段选择1个最佳标题；(2)第27～30题要求从所给的6个选项中为每个句子确定1个最佳选项。 Transport and Trade 1 Transport is one of the aids to trade. By moving goods from places where they are plentiful to places where they are scarce, transport adds to their value. The more easily goods can be brought over the distance that separates producer and consumer, the better for trade. When there were no railways, no good roads, no canals, and only small sailing ships, trade was on a, small scale. 2 The great advances made in transport during the last two hundred years were accompanied by a big increase in trade. Bigger and faster ships enabled a trade in meat to develop between Britain and New Zealand, for instance. Quicker transport makes possible mass-production and big business, "drawing supplies from, and selling goods to, all parts of the globe. Big factories could not exist without transport to carry the large number of workers they need to and from their homes. Big city stores could not have developed unless customers could travel easily from the suburbs and goods delivered to their homes. Big cities could not survive unless food could be brought from a distance. 3 Transport also prevents waste. Much of the fish landed at the ports would be wasted if it could not be taken quickly to inland towns. Transport has given us a much greater variety of foods and goods since we no longer have to live on what is produced locally. Foods which at one time could be obtained only during a part of the year can now be obtained all through the year. Transport has raised the standard of living. 4 By moving fuel, raw materials, and even power, as, for example, through electric cables, transport has led to the establishment of industries and trade in areas where they would have been impossible before. Districts and countries can concentrate on making things which they can do better and more cheaply than others and can then exchange them with one another. The cheaper and quicker transport becomes, the longer the distance over which goods can profitably be carried. Countries with poor transport have a lower standard of living. 5 Commerce requires not only the moving of goods and people but also the carrying of messages and information. Means of communication, like telephones, cables and radio, send information about prices, supplies, and changing conditions in different parts of the world. In this way, advanced communication systems also help to develop trade. A. Higher living standard B. Importance of transport in trade C. Various means of transport D. Birth of transport-related industries and trade E. Role of information in trade F. Public transportation