单选题The concept of upward social mobility has been an abiding feature of American life.

单选题Step Back in Time Do you know that we live a lot longer now than the people who were born before us? One hundred years ago the average woman lived to be 45. But now, she can live until at least 80. One of the main reasons for people living longer is that we know how to look after ourselves better. We know which foods are good for U. S. and what we have to eat to make sure our bodies get all the healthy things they need. We know why we sometimes get ill and what to do to get better again. And we know how important it is to do lots of exercise to keep our hearts beating healthily. But in order that we don"t slip back into bad habits, let"s have a look at what life was like 100 years ago. Families had between 15 and 20 children, although many babies didn"t live long. Children suffered from lots of diseases, especially rickets (佝偻病) and scurvy (坏血病), which are both caused by bad diets. This is because many families were very poor and not able to feed their children well. Really poor families who lived in crowded cities like London and Manchester often slept standing up, bending over a piece of string, because there was no room for them to lie down. People didn"t have fridges until the 1920s. They kept fresh food cold by storing it on windowsills(窗台板), blocks of ice, or even burying it in the garden. Some children had to start work at the age of seven or eight to earn money for their parents. If you had lived 100 years ago, you might well be selling matchsticks(火柴杆)(a job done by many children)or working with your dad by now.

单选题The word“touch" in paragraph 7 could be best replaced by

单选题 阅读下面这篇短文，短文后列出7个句子，请根据短文的内容对每个句子做出判断。 Attempts to understand the relationship between social behavior and health have their origin in history. Dubos(1969) suggested that primitive humans were closer to the animals in that they, too, relied upon their instincts to stay healthy. Yet some primitive humans recognized a cause and effect relationship between doing certain thing and alleviating (减轻)symptoms of a disease or improving the condition of a wound. Since there was so much that primitive humans did not understand about the functioning of the body, magic became an integral component of the beliefs about the causes arid cutes of health disorders. So it is not surprising that early humans thought that illness was caused by evil spirits. Primitive medicines made from vegetables or animals were invariably used in combination with some form of ritual to expel harmful spirit from a diseased body. One of the earliest attempts in the western world to formulate(系统地阐述)principles of health care based upon rejection of supernatural phenomena is found in the work of the Greek physician Hippocrates. Little is known of Hippocrates who lived around 400 B. C., not even whether he actually authored the collection of books that bears his name. Nevertheless, the writings, attributed to him have provided a number of principles underlying modern practice. One of his most famous contributions, the Hippocratic Oath, is the foundation of contemporary medical ethics(道德). Among other things, it requires the physician to swear that he or she will help the sick, keep oneself from intentional wrong-doing or harm, and keep secret all matters to keep the doctor patient relation-ship. Hippocrates also argued that medical knowledge should be derived from an understanding of the natural sciences and the logic of cause and effect relation-ships. In this classic thesis, On Airs, Waters, and Places, Hippocrates pointed out that human wellbeing is influenced by the totality of environmental factors: living habits or lifestyle, climate, geography of the land, and the quality of air, and food. Interesting enough, concerns about our health and the quality of air, water, and places are still very much written in the twentieth century.

单选题But {{U}}in the end{{/U}} he approved of our proposal

单选题When did British gentlemen begin to wear ties regularly?

单选题It is just not credible that she would cheat.

单选题Many people were injured during the storm.A. harmedB. killedC. helpedD. homeless

单选题However bad the situation is, the majority is unwilling to risk change.

单选题Why are two shots thought to be necessary? People born after 1957 have not been exposed to a similar virus. The first dose "primes" the immune system to respond, but it's the second shot that triggers the production of antibodies. This is not unusual. A number of vaccines are given for the first time in multidose series. For example, the seasonal flu vaccine is given in two shots to children under 9 if they've never had the flu. Why are two shots thought to be necessary?A. Because most people have not been exposed to a similar virus.B. Because one shot is enough to trigger the production of antibodies.C. Because flu vaccine has always been given in two shots.D. Because most people have never had a flu.

单选题A {{U}}turbulent{{/U}} storm was a major factor in the defeat of the Spanish Armada. A. noxious B. violent C. mysterious D. pathetic

单选题{{U}}Launched{{/U}} in the autumn of 1976 in London, and now published ten times a year.

单选题Research {{U}}indicates{{/U}} that men find it easier to give up smoking than women.

单选题The sea was calm and still .

单选题{{B}}第三篇{{/B}} There seem to be two main reasons that women cry more often. One is biological. Up to age 12, boys and girls cry equally often. From then until age 18, the level of the hormone prolactin(催乳激素) rises in young women, until their blood contains 60 per-cent more than men' s. And prolactin affects the production of tears. On the sociological side, men in particular are conditioned out of crying. From the age of 12 or 13, boys are told that crying shows a loss of control, that it is a sign of weakness. If men step outside the norm and show their feelings in the workplace, they run the risk of getting labels attached that are not complimentary. Researches on conversations show that women are more likely to talk about feelings, men about activities. This is a reflection of our socialization. Also, men are more likely to express their opinions. It gives rise to women feeling enormous frustration about getting their views across. When women are crying at work, it's often out of sheer frustration, about not being able to get their needs identified, known, put across, and getting a response to them…There is a sense of "I'm not being taken seriously." The trouble is, if a woman cries in this situation, men are likely to say, "She's far too emotional." There are, though, a couple of arenas(活动场所) in which it seems to be acceptable for men to be emotional: sports and especially more recently, politics. An essay in Times magazine once reported on timely tears from former Presidents George Bush and Richard Nixon. The Times essay says 1988 presidential candidate Patricia Schroeder' s tears led some to describe her as "just another weak woman, temperamentally unfitted for the presidency". It concludes: "Men may weep, but women must prove them- selves made of sterner stuff."

单选题Will you please {{U}}call{{/U}} my husband as soon as possible? A. contact B. consult C. phone D. visit

单选题Forester stared at his car, trembling with rage.A. turningB. jumpingC. shoutingD. shaking

单选题She bumped into her boyfriend in town this morning.

单选题At the age of 30, Hersey suddenly became a celebrity .

单选题Scientists Develop Ways of Detecting Heart Attack German researchers have 1 a new generation of defibrillators and early warning software aimed at offering heart patients greater protection 2 sudden death from cardiac arrest. In Germany alone around 100,000 people die annually as a result of cardiac arrest and many of these cases 3 by disruption to the heart"s rhythm. Those most at risk are patients who have 4 suffered a heart attack, and for years the use of defibrillators has proved useful in diagnosing 5 disruptions to heart rhythms and correcting them automatically by intervening within seconds. These devices 6 a range of functions, such as that of pacemaker. Heart specialists at Freiburg"s University Clinic have now achieved a breakthrough with an implanted defibrillator 7 of generating a six channel electrocardiogram (ECG) within the body. This integrated system allows early diagnosis of 7 blood flow problems and a pending heart attack. It will be implanted in patients for the first time this year. Meanwhile, researchers at the Fraunhofer Institute for Applied Mathematics in Kaiserslautern have developed new computer software that renders of ECG data 8 . The overwhelming 9 of patients at risk will not have an implanted defibrillator and must for this reason undergo regular ECGs. "Many of the current programs only 10 into account a linear correlation of the data. We are, however, making use 11 a non-linear process that reveals the chaotic patterns of heart beats as an open and complex system," Hagen Knaf says. " 12 changes in the heart beats over time can be monitored and individual variations in patients taken into account." An old study of ECG data, based 13 600 patients who had suffered a subsequent heart attack, enabled the researchers to compare risks and to show 14 the new software evaluates the data considerably better.