单选题It's almost impossible to find him in the {{U}}immense{{/U}} ocean. A.natural B.fatal C.tiny D.enormous

单选题Society is now much more Udiverse/U than ever before.

单选题Charges for local telephone calls are {{U}}outrageous{{/U}}. A.unheard of B.unacceptable C.unbelievable D.ridiculous

单选题It is virtually impossible to persuade him to apply for the job.

单选题Our arrangements were thrown into complete turmoil .

单选题 下面有3篇短文，每篇短文后有5道题，每道题后面有4个选项。请仔细阅读短文并根据短文内容回答其后面的问题，从4个选项中选择1个最佳答案。{{B}}第一篇{{/B}} {{B}} Early or Later Day Care{{/B}} The British psychoanalyst John Bowlby maintains that separation from the parents during the sensitive "attachment" period from birth to three may scar a child's personality and predispose to emotional problems in later life. Some people have drawn the conclusion from Bowlby's work that children should not be subjected to day care before the age of three because of the parental separation it entails, and many people do believe this. But there are also arguments against such a strong conclusion. Firstly, anthropologists point out that the insulated love affair between children and parents found in modem societies does not usually exist in traditional societies. For example, in some tribal societies, such as the Ngoni, the father and mother of a child did not rear their infant alone--far from it. Secondly, common sense tells us that day care would not be so widespread today if parents, care-takers found children had problems with it. Statistical studies of this kind have not yet been carded out, and even if they were, the results would be certain to be complicated and controversial. Thirdly, in the last decade there have been a number of careful American studies of children in day care, and they have uniformly reported that day care had a neutral or slightly positive effect on children's development. But tests that have had to be used to measure this development are not widely enough accepted to settle the issue. But Bowlby's analysis raises the possibility that early day care has delayed effects. The possibility that such care might lead to, say, more mental illness or crime 15 or 20 years later can only be explored by the use of statistics. Whatever the long-term effects, parents sometimes find the immediate effects difficult to deal with. Children under three are likely to protest at leaving their parents and show unhappiness. At the age of three or three and a half almost all children find the transition to nursery easy, and this is undoubtedly why more and more parents make use of child care at this time. The matter, then, is far from clear-cut, though experience and available evidence indicate that early care is reasonable for infants.

单选题Liver Disease The liver is the second largest organ in your body. The liver performs many jobs in your body. It processes what you eat and drink into energy and nutrients your body can use. The liver also removes harmful substances from your blood. One out of every 10 Americans is affected by liver disease. Liver disease is one of the top 10 causes of death in the United States. There are more than 100 liver diseases. Viruses cause some of them, like hepatitis A, hepatitis B and hepatitis C. Others can be the result of drugs, poisons or drinking too much alcohol. If the liver forms scar tissue because of an illness, it"s called cirrhosis. Cancer can affect the liver. You should also inherit a liver disease such as hemochromatosis. Liver disease can manifest in many ways. Characteristic manifestations include jaundice, liver enlargement, portal hypertension and etc. Sometimes the manifestations of liver disease are not obvious. For example, symptoms may include fatigue, a general feeling of illness, loss of appetite, and mild weight loss. However, people may not notice these symptoms, and these symptoms are also typical of many other diseases. Thus, liver disease can easily be overlooked, particularly in its early stages. Hepatitis A vaccination is the best way to prevent HAV (hepatitis A virus). Hepatitis B vaccination is the best way to prevent HBV. Other ways to stop the spread of HBV are: not sharing needles; practicing safe sex; not Sharing razors, toothbrushes, or other personal items; using only clean needles for fattoos and body piercings. There is no vaccine to prevent HCV. The only way to prevent HCV is to avoid direct contact with infected blood. Eating a healthy diet and exercising regularly help the liver to work well. Limit the amount of alcohol you drink. When medicines are taken incorrectly, the liver can be harmed. So follow dosing instructions and talk to a doctor or pharmacist about the medicines you are taking. Mixing alcohol and medicines can harm your liver, even if they are not taken at the same time. Toxins can injure liver cells. So limit direct contact with toxins from cleaning and aerosol products, insecticides, chemicals, and additives in cigarettes. Do not smoke.

单选题Medicine Award Kicks off Nobel Prize Announcements Two scientists who have won praise for research into the growth of cancer cells could be candidates for the Nobel Prize in medicine when the 2008 winners are presented on Monday, kicking off six days Nobel announcements. Australian-born U. S. citizen Elizabeth Blackburn and American Carol Greider have already won a series of medical honors for their enzyme research and experts say they could be among the front-runners for Nobel. Only seven women have won the medicine prize since the first Nobel Prizes were handed out in 1901. The last female winner was U.S. researcher Linda Buck in 2004, who shared the prize with Richard Axel. Among the pair"s possible rivals are Frenchman Pierre Chambon and Americans Ronald Evans and Elwood Jensen, who opened up the field of studying proteins called nuclear hormone receptors. As usual, the award committee is giving no hints about who is in the running before presenting its decision in a news conference at Stockholm"s Karolinska Institute. Alfred Nobel, the Swede who invented dynamite, established the prizes in his will in the categories of medicine, physics, chemistry, literature and peace. The economics prize is technically not a Nobel but a 1968 creation of Sweden"s central bank. Nobel left few instructions on how to select winners, but medicine winners are typically awarded for a specific breakthrough rather than a body of research. Hans Jornvall, secretary of the medicine prize committee, said the 10 million kronor (US $1.3 million) prize encourages groundbreaking research hut he did not think winning it was the primary goal for scientists. "Individual researchers probably don"t look at themselves as potential Nobel Prize winners when they"re at work," Jornvall told The Associated Press. "They get their kicks from their research and their interest in how life functions." In 2006, Blackburn, of the University of California, San Francisco, and Greider, of Johns Hopkins University in Baltimore, shared the Lasker prize for basic medical research with Jack Szostak of Harvard Medical School. Their work set the stage for research suggesting that cancer cells use telomerase to sustain their uncontrolled growth.

单选题While we don"t agree, we continue to be friends.

单选题The once {{U}}barren{{/U}} hillsides are now good farmland.

单选题They have been tightening their belts for months, Uadapting/U themselves to a war economy.

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；如果该句的信息文巾没有提及，请选择C。 Breast Cancer Deaths Record Low The number of women dying from breast cancer has fallen to a record low by dropping under 12,000 a year for the first time since records began. The Cancer Research UK data showed that 11,990 women died in the UK in 2007. The previous lowest figure had been recorded in 1971 -- the year records began -- after which it rose steadily year by year until the late 1980s. Professor Peter Johnson, Cancer Research UK's chief clinician, said: "It's incredibly encouraging to see fewer women dying from breast cancer now than at any time in the last 40 years, despite breast cancer being diagnosed more often. " "Research has played a crucial role in this progress leading to improved treatments and better management for women with the disease. " "The introduction of the NHS (国民保健制度) breast screening program has also contributed as women are more likely to survive the earlier cancer is diagnosed. " Breast cancer is now the most common cancer in the UK with 45,500 women every year diagnosed with the disease- a 500% rise in 25 years. The number of deaths peaked in 1989, when 15,625 women died. It then fell by between 200 and 400 deaths each year until 2004. There was a slight rise in 2005 and then two years of falls. Dr. Sarah Cant, policy manager at Breakthrough Breast Cancer, said: "It is great news that fewer women are dying from breast cancer and highlights the impact of improved treatments, breast screening and awareness of the disease. " "However, this is still too many women and incidence of the disease is increasing year by year. " The rising rate of breast cancer diagnosis has been put down to a variety of factors including obesity (肥胖) and alcohol consumption.

单选题Why a Healthy Weight Is Important If your BMI or waist circumference is above the healthy range you' re at increased risk of diabetes, Cardiovascular disease and certain cancers such as colon, prostate and breast cancer. You're also more likely to experience joint problems and back pain, and may find you become breathless and have difficulty sleeping. The more weight you gain, the more severe these problems may become. Losing weight depends on energy balance. If you consume more energy from food and drink than you burn through maintaining your body' s functions and physical activity, you'll gain weight. Cutting calories by reducing how much you eat and drink, and increasing how much physicalactivity you do will make you lose weight. If you reduce your daily energy intake to around 500 calories (kcal) below your energy requirements ,you'll lose about 0.5kg a week. This is a sensiblerate of weight loss. Before you start making changes to your lifestyle, it' s important to ask yourself if this is the right time. The reasons you decide to lose weight will be personal to you. You might find you' re more successful if you choose a relatively calm time in your life to start. Whatever you decide, make sure you' re feeling positive and ready for the challenge. Set achievable goals. Aim to lose about five to ten percent of your initial body weight over a few months. Research shows this kind of weight loss is achievable and will improve your health. Once you' ve reached your goal, congratulate yourself and set another five per cent weight loss target. This way, you'll feel good about achieving small steps, rather than getting clown because it' s taking you so long to lose a large amount of weight. You may lose more weight in some weeks than in others, but as long as your weight continues to decrease overall there' s no need to worry. If your weight stays the same for a week or two, don' t aband on all you' ve achieved. Instead, focus on the amount and type of food you' re eating andtry to be a little more active.

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Major product categories encompass electronic test and measuring instruments, solid-state components, electronic calculations.A. roundB. includeC. aroundD. and

单选题The army should have operated in conjunction with the fleet to raid the enemy's coast. A. together B. in succession C. in alliance D. in connection

单选题If I made a mistake, I will try to remedy it.

单选题Which of the following is NOT true of Crystal Ear?

单选题Intellect Americans today don"t place a very high value on intellect. Our heroes are athletes, entertainers, and entrepreneurs, not scholars. Even our schools are where we send our children to get a practical education—not to pursue knowledge for the sake of knowledge. Symptoms of pervasive anti-intellectualism in our schools aren"t difficult to find. "Schools have always been in a society where practical is more important than intellectual," says education writer Diane Ravitch. "Schools could be a counterbalance." Ravitch"s latest book, Left Back: A Century of Failed School Reforms , traces the roots of anti-intellectualism in our schools, concluding they are anything but a counterbalance to the American distaste for intellectual pursuits. But they could and should be. Encouraging kids to reject the life of the mind leaves them vulnerable to exploitation and control. Without the ability to think critically, to defend their ideas and understand the ideas of others, they cannot fully participate in our democracy. Continuing along this path, says writer Earl Shorris, "We will become a second-rate country. We will have a less civil society." "Intellect is resented as a form of power or privilege," writes historian and Professor Richard Hofstadter in Anti-intellectualism in American life , a Pulitzer Prize winning book on the roots of anti-intellectualism in US politics, religion, and education. From the beginning of our history, says Hofstadter, our democratic and populist urges have driven us to reject anything that smells of elitism. Practicality, common sense, and native intelligence have been considered more noble qualities than anything you could learn from a book. Ralph Waldo Emerson and other Transcendentalist philosophers thought schooling and rigorous book learning put unnatural restraints on children: "We are shut up in schools and college recitation rooms for 10 or 15 years and come out at last with a bellyful of words and do not know a thing." Mark Twain"s Huckleberry Finn exemplified American anti-intellectualism. Its hero avoids being civilized—going to school and learning to read so he can preserve his innate goodness. Intellect, according to Hofstadter, is different from native intelligence, a quality we reluctantly admire. Intellect is the critical, creative, and contemplative side of the mind. Intelligence seeks to grasp, manipulate, re-order, and adjust, while intellect examines, ponders, wonders, theorizes, criticizes and imagines. School remains a place where intellect is mistrusted. Hofstadter says our country"s educational system is in the grips of people who "joyfully and militantly proclaim their hostility to intellect and their eagerness to identify with children who show the least intellectual promise."

单选题In studying social groups, sociologists often gain insight through the use of such devices as questionnaires.