单选题Henry cannot resist the lure of drugs.

单选题How Two Great Conflicts Helped to Change Europe Ninety years ago on a sunny morning in Northern France, something happened that changed Britain and Europe for ever. At half past seven on the morning of July 1,1916, whistles(哨子) blew and thousands of British soldiers left their positions to attack their German enemies. By the end of the day, 20,000 of them were dead, and another 30,000 wounded or missing. The Battle of the Somme, 1 it is called, lasted for six months. When it ended, 125,000 British soldiers were dead. They had gained five kilometers of ground. This was one of a series of great battles during WWI. The attack on the Somme was staged to relieve 2 on the French, who were engaged in a great battle of their own at a place called Verdun. By the time the battle ended, over a million French and German troops had been killed. About 17 million people were killed in WWI. There have been wars with greater numbers of dead. But there has never been one in 3 most of the dead were concentrated in such a small area. On the Somme battlefield, two men died for every meter of space. Local farmers working in the land still 4 the bodies of those who died in that battle. The dead of all nations were buried in a series of giant graveyards along the line of the border 5 France and Belgium. Relatives and descendants (子孙) of those who died still visit these graveyards today. What the French call the "tourism of death" 6 an important contribution to the local economy. It took a second great conflict before Europe was to turn 7 war itself. Twenty-eight years after the Somme battle, a liberating army of British, American and Canadian troops took back 8 from another German invasion. More than 500,000 people were killed. New 9 were built. Two great conflicts across two generations helped to change the European mind about war. Germany, once the most warlike country in Europe, is now probably more in 10 of peace than any other. One major cause of war in Europe was rivalry(竞争)between France and Germany. The European Union was specifically formed to end that 11 . According to US commentator William Pfaff, "Europeans are interested in a slow development of civilized and tolerant international relations, 12 on problems while avoiding catastrophes(灾难) along the way. They have themselves only recently 13 from the catastrophes of WWI and WWII, when tens of millions of people were destroyed. They don"t want 14 ." The last British veteran of the Somme battle died in 2005, aged 108. And WWI is passing out of memory and into history. But for anyone who wants to understand how Europeans 15 , it is still important to know a little about the terrible events of July 1, 1916.

单选题All the pupils seem to be very cheerful.

单选题Thirst for Oil Worldwide every day, we devour the energy equivalent of about 200 million barrels of oil. Most of the energy on Earth comes from the Sun. In fact enough energy from the Sun hits the planet"s surface each minute to cover our needs for an entire year, we just need to find an efficient way to use it. So far the energy in oil has been cheaper and easier to get. But as supplies dwindle, this will change, and we will need to cure our addiction to oil. Burning wood satisfied most energy needs until the steam-driven industrial revolution, when energy-dense coal became the fuel of choice. Coal is still used, mostly in power stations, to cover one quarter of our energy needs, but its use has been declining since we started pumping up oil. Coal is the least efficient, unhealthiest and most environmentally damaging fossil fuel, but could make a comeback, as supplies are still plentiful; its reserves are five times larger than oil"s. Today petroleum, a mineral oil obtained from below the surface of the Earth and used to produce petrol, diesel oil and various other chemical substances, provides around 40% of the world"s energy needs, mostly fuelling automobiles. The U.S. consumes a quarter of all oil, and generates a similar proportion of greenhouse gas emissions. The majority of oil comes from the Middle East, which has half of known reserves. But other significant sources include Russia, North America, Norway, Venezuela and the North Sea. Alaska"s Arctic National Wildlife Refugel could be a major new U.S. source, to reduce reliance on foreign imports. Most experts predict we will exhaust easily accessible reserves within 50 years, though opinions and estimates vary. We could fast reach an energy crisis in the next few decades, when demand exceeds supply. As conventional reserves become more difficult to access, others such as oil shales and tar sands may be used instead. Petrol could also be obtained from coal. Since we started using fossil fuels, we have released 400 billion tonnes of carbon, and burning the entire reserves could eventually raise world temperatures by 13℃. Among other horrors, this would result in the destruction of all rainforests and the melting of all Arctic ice.

单选题Only those who worked here for more than five years are {{U}}eligible{{/U}} for the special payment. A. encouraged B. enforced C. expected D. entitled

单选题The next morning she told us that the last question didn't Udepart/U till well after midnight.

单选题The dentist has decided to take out the girl"s bad tooth.

单选题Iron Deficiencies Sports medicine experts have observed for years that endurance athletes, particularly females, frequently have iron deficiencies. Now a new study by a team of Purdue University researchers suggests that even moderate exercise may lead to reduced iron in the blood of women. "We found that women who were normally inactive and then started a program of moderate exercise showed evidence of iron loss," says Roseanne M. Lyle, associate professor at Purdue. Her study of 62 formerly inactive women who began exercising three times a week for six months was published in the journal Medicine & Science in Sports & Exercise . "Women who consumed additional meat or took iron supplements were able to bounce back," she notes. "But the new exercisers who followed their normal diet showed a significant decrease in iron levels." Iron deficiency is very common among women in general, affecting one in four female teenagers and one in five women aged 18 to 45, respectively. But the ratio is even greater among active women, affecting up to 80 percent of female endurance athletes. This means, Lyle says, that "too many women ignore the amount of iron they take in". Women of childbearing age are at greatest risk, since their monthly bleeding is a major source of iron loss. Plus, many health-conscious women increase their risk by rejecting red meat, which contains the most easily absorbed form of iron. And because women often restrict their diet in an effort to control weight, they may not consume enough iron-rich food, and are liable to experience a deficiency. "The average woman takes in only two thirds of the recommended daily allowance for iron," notes another expert. "For a woman who already has a poor iron status, any additional iron loss from exercise may be enough to tip her over the edge into a more serious deficiency," notes the expert. Exercise can result in iron loss through a variety of mechanisms. Some iron is lost in sweat, and, for unknown reasons, intense endurance exercise is sometimes associated with bleeding of the digestive system. The best sources of iron, and the only sources of the form of iron most readily absorbed by the body, are meat, chicken, and fish. Good sources of other forms of iron include dates, beans, and some leafy green vegetables.

单选题If headaches only occur at night, lack of fresh air is often the cause.

单选题Britain's inability to keep pace with the steady development of technology, {{U}}coupled{{/U}} with lack of attention to marketing needs, is the reason for our national decline.

单选题The appearance of one or another side effect after taking some sleeping pill is unavoidable.

单选题He has a very good personality and makes a lot of friends.A. capacityB. characterC. realityD. attitude

单选题 下面的短文后列出了7个句子，请根据短文的内容对每个句子做出判断：如果该句提供的是正确信息，请选择A：如果该句提供的是错误信息，请选择B；如果该句的信息文中没有提及，请选择C。 {{B}}The Doctor in America{{/B}} Self-employed private physicians who charge a fee for each patient visit have been the norm for American medical practice. Most physicians have a contract relationship with one or more hospitals in their community. They refer their patients as needed to the hospital, which usually charges according to the number of days a patient stays and the facilities - X-rays, operating rooms, tests - he or she uses. Some medical doctors are on salary. Salaried physicians may work as hospital staff members, or residents, who are often still in training. They may teach in medical schools, be hired by corporations to care for their workers or work for the federal government's Public Health Service. Physicians are among the best-paid professionals in the United States. In the 1980s, it was not uncommon for medical doctors to earn incomes of more than $100,000 a year. Specialists, particularly surgeons, might earn several times that amount. Physicians list many reasons why they deserve to be so well rewarded for their work. One reason is the long and expensive preparation required to become a physician in the United States. Most would-be physicians first attend college for four years, which can cost nearly $20,000 a year at one of the best private institutions. Prospective physicians then attend medical school for four years. Tuition alone can exceed $10,000 a year. By the time they have obtained their medical degrees, many young physicians are deeply in debt. They still face three to five years of residency (住院医生实习期) in a hospital, the first year as an apprentice physician. The hours are long and the pay is relatively low. Setting up a medical practice is expensive, too. Sometimes several physicians will decide to establish a group practice, so they can share the expense of maintaining an office and buying equipment. These physicians also take care of each other's patients in emergencies. Physicians work long hours and must accept a great deal of responsibility. Many medical procedures, even quite routine ones, involve risk. It is understandable that physicians want to be well rewarded for making decisions which can mean the difference between life and death.

单选题We saw a lot of commercial buildings in Chicago.A. condemnedB. razedC. businessD. vacant

单选题His long-term goal is to set up his own business.

单选题According to {{U}}many sources{{/U}}, the safest drinking water is from a piped supply.

单选题The story was published with the sole purpose of selling newspapersA. realB. mainC. onlyD. practical

单选题The current external surplus declined further.A. lessB. fartherC. fewD. more

单选题Successful leaders Udominate/U events rather than react to them.

单选题Recent studies have shown that the stature of male Americans has scarcely changed in the past two hundred years.A. weightB. heightC. life spanD. head size