单选题Wild pigs are fierce and courageous fighters and may charge with little or no______.

单选题Parenthood isn"t a career-killer. In fact, economists with two or more kids tend to produce more research, not less, than their one-child or childless colleagues. But female economists 1 can pay a price in terms of productivity after becoming mothers, especially 2 they"re young or unmarried. That"s according to a new research from the Federal Reserve Bank of St. Louis. There is widespread 3 that motherhood is 4 costly in terms of professional career advancement. "In particular, it is often 5 that the only way for young women to 6 a challenging career is to remain childless," they wrote. Our study of the academic labor market arrives at a somewhat less 7 picture: We do not observe a family gap in research productivity among female academic economists. 8 , motherhood-induced decreases in research productivity are less pronounced than usually purported. The authors in early 2012 9 about 10,000 economists through the Research Papers in Economics online platform, 10 the academics" answers with their publication records. They gauged an economist"s productivity 11 looking at their output: published research, weighted by journal 12 . Among their findings: Mothers of at least two children are, 13 , more productive than mothers of only one child, and mothers in general are more 14 than childless women. Fathers of 15 two children are also more productive than fathers of one child and childless men. Toward the end of their careers, however, childless men appear to be somewhat more productive than fathers of one child. Parenthood does appear linked to 16 productivity while the children are 12 and younger: mothers average a 17.4% loss, while fathers average a 5% loss. A female economist with three children, on average, 17 the equivalent of four years of research 18 by the time her kids become teenagers. Women who are married or in a 19 relationship do not have any drop in research productivity in the three years following childbirth. For single mothers, research output drops by roughly a third 20 the same period.

单选题Britons are increasingly entertaining guests at home with dinner, film and karaoke nights, inspired by television shows on cookery and home entertainment, according to a survey. More than half (53 percent) of the respondents to a poll of 1,000 Britons across the country said they now prefer to spend quality time with family and friends by inviting them over to their homes rather than meeting in bars and restaurants，the survey by mobile phone operator T-Mobile showed. Popular television shows such as " Come Dine With Me " where amateur chefs attempt to show each other with their cooking skills. " Master Chef " where ordinary people compete to cook to Michelin standards and a number of celebrity cookery shows have inspired Britons to entertain at home. The poll showed that nearly a third of respondents had splashed out cash for home entertainment improvements such as sofas, dining tables, games consoles and bigger televisions to impress the guests. "Over the last couple of years, my clients have increasingly asked for home parties rather than ones at independent venues," party planning expert Liz Brewer said in a statement accompanying the poll"s results. "This is not only due to the recession but because many have become increasingly house-proud and keen to show off their cooking skills, in addition to their latest home entertainment purchases." Celebrity chef Jamie Oliver was the top choice for dream host of respondents, while Prime Minister Gordon Brown was one of the least favored, alongside his rival Conservative leader David Cameron.

单选题It is generally believed that no prisoner would readily give a fellow prisoner away.

单选题Your advice that he ______ a dentist is unreasonable.

单选题On hearing the joke, she burst into ______.

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单选题 In Plato's Utopia, there are three classes: the common people, the soldiers, and the guardians chosen by the legislator. The main problem, as Plato perceives, is to insure that the guardians shall carry out the intention of the legislator. For this purpose the first thing he proposes is education. Education is divided into two parts, music and gymnastics. Each has a wider meaning than at present: "music" means everything that is in the province of the muses, and "gymnastics" means everything concerned with physical training fitness. "Music" is almost as wide as what is now called "culture", and "gymnastics" is somewhat wider than what "athletics" mean in the modern sense. Culture is to be devoted to making men gentlemen, in the sense which, largely owing to Plato, is familiar in England. The Athens of his day was, in one respect, analogous to England in the nineteenth century: there was in each an aristocracy enjoying wealth and social prestige, but having no monopoly of political power; and in each the aristocracy had to secure as much power as it could by means of impressive behavior. In Plato's Utopia, however, the aristocracy rules were unchecked. Gravity, decorum and courage seem to be the qualities mainly to be cultivated in education. There is to be a rigid censorship from very early years over the literature to which the young have access and the music they are allowed to hear. Mothers and nurses are to tell their children only authorized stories. Also, there is a censorship of music. The Lydian and Ionian harmonies are to be forbidden, the first because it expresses sorrow, the second because it is relaxed. Only the Dorian (for courage) and the Phrygian (for temperance) are to be allowed. Permissible rhythms must be simple, and such as are expressive of a courageous and harmonious life. As for gymnastics, the training of the body is to be very austere. No one is to eat fish, or meat cooked otherwise than roasted, and there must be no sauces or candies. People brought up on his regimen, he says, will have no need of doctors. Gymnastics applies to the training of mind as well. Up to a certain age, the young are to see no ugliness or vice. But at a suitable moment, they must be exposed to "enchantments", both in the shape of terrors that must not terrify, and of bad pleasures that must not seduce the will. Only after they have withstood these tests will they be judged fit to be guardians.

单选题Read the following text and answer questions by finding a subtitle for each of the market parts or paragraphs. There are two extra items in the subtitles. Mark your answers on ANSWER SHEET 1. [A] Analyzing your own taste [B] Being cautious when experimenting [C] Finding a model to follow [D] Getting the final look absolutely right [E] Learning to be realistic [F] Making regular conscious choices [G] Choosing an outfit for yourselves When we meet people for the first time, we often make decisions about them based entirely on how they look. And, of course it's something that works both ways, for we too are being judged on our appearance. When we look good, we feel good, which in turn leads to a more confident and self- assured manner. People then pick up on this confidence and respond positively towards us. Undoubtedly, it's what's inside that's important, but sometimes we can send out the wrong signals simply by wearing inappropriate clothing or not spending enough time thinking about how others see us.

单选题They (couldn't) decide (whether) they should (leave) the theater or (to stay there). A. couldn't B. whether C. leave D. to stay there

单选题______ John Adams who in 1775 recommended George Washington to be commander in chief of the Continental Army. A. It was B. That was C. Although D. When

单选题The most influential novelist in Romantic period is______.

单选题Millions of people are ______ in health by the polluted environments.

单选题There are many reasons why food fads have continued to flourish. Garlic has long been touted (兜售) as an essential ingredient of physical prowess (能力) and as a flu (1) , squash has been thought by some to cure digestive disorders, and red pepper has been (2) to promote endurance. The natural human desire for a simple solution to a difficult problem (3) the stage for promoting miraculous potions (饮剂), pills and combination of chemicals. The (4) individuals who eagerly embrace any second-hand information with scientific overtones (暗示) provide the foundation for healthy business enterprises. A person who has never crossed the (5) of a health food store may be astonished, (6) or overjoyed. Countless elixirs (万应灵), herbs, powders and other fascinating extracts are only a (7) of the high-profit selection. The available literature includes pamphlets extolling (赞扬) the amazing return of youth one can (8) while drinking a potion filled with tropical weeds, as well as volumes (9) the reader of an almost (10) longevity. The store is directly keyed to arouse visitors' (11) over their health and to (12) on real and imagined problems by offering solutions that, (13) , cost more than the customers may be able to (14) Health food store patrons are often cajoled (劝诱) into buying tonics (补药) that promise to make the functioning of healthy organs even better, (15) whether an improvement is (16) for. Promotion of expensive products that consumers do not actually need takes (17) initiative and insight. (18) occasion, there may even be some slight (19) for truth in an entrepreneur's (20) to cure customer of ills—for a price.

单选题So badly______in the accident that he had to stay in the hospital for a month.

单选题It is animals and plants which lived in or near water whose remains are most likely to be preserved, for one of the necessary conditions of preservation is quick burial, and it is only in the seas and rivers, and sometimes lakes, where mud and silt have been continually deposited, that bodies and the like can be rapidly covered over and preserved. But even in the most favorable circumstances only a small fraction of the creatures that die are preserved in this way before decay sets in or, even more likely, before scavengers eat them. After all, all living creatures live by feeding on something else, whether it be plant or animal, dead or alive, and it is only by chance that such a fate is avoided. The remains of plants and animals that lived on land are much more rarely preserved, for there is seldom anything to cover them over. When you think of the innumerable birds that one sees flying about, not to mention the equally numerous small animals like field mice and voles which you do not see, it is very rarely that one comes across a dead body, except, of course, on the roads. They decompose and are quickly destroyed by the weather or eaten by some other creatures.

单选题For light to travel across the solar system, it will take ______.

单选题Deep inside a mountain near Sweetwater in East. Tennessee is a body of water known as the Lost Sea. It is listed by the Guinness Book of World Records as the world's largest underground lake. The Lost Sea is part of an extensive and historic cave system called Craighead Caverns. The caverns have been known and used since the days of the Cherokee Indian nation. The cave expands into a series of huge morns from a small opening on the side of the mountain. Approximately one mile from the entrance, in a room called "The Council Room," many Indian artifacts have been found. Some of the items discovered include pottery, arrowheads, weapons, and jewelry. For many years there were persistent minors of a large underground lake somewhere in a cave, but it was not discovered until 1905. In that year, a thirteen-year-old boy named Ben Sands crawled through a small opening three hundred feet underground. He found himself in a large cave half filled with water. Today tourists visit the Lost Sea and ride far out onto it in glass-bottomed boats powered by electric motors. More than thirteen acres of water have been mapped out so far and still no end to the lake has been found. Even though teams of divers have tried to explore the Lost Sea, the full extent of it is still unknown.