单选题A dog enthusiast took home two puppies from the dog shelter. He fed one of the puppies super-premium canned dog food, while he fed the other a generic brand from the grocery store. The dog fed on the generic brand gained weight twice as fast as the dog fed the super-premium brand. Because of the difference in these results, the dog enthusiast concluded that the generic brand actually provided nutrition superior to that of the super-premium brand. Each of the following, if true, would weaken the evidence for the dog enthusiast's conclusion except for which of the following? A. A dog will sometimes gain more weight when eating inferior-quality food because he must eat more of it to obtain the nutrients he needs. B. The dogs were of mixed breeds and appeared to be descended from dogs of different sizes. C. Both dogs ate all of the food given to them at each serving. D. The dog enthusiast did not give the two dogs equal amounts of their respective foods. E. The dog who received the super-premium dog food suffered from a digestive system disorder that hindered his growth.

单选题In the late 1960"s, many people in North America turned their attention to environmental problems, and new steel-and-glass skyscrapers were widely criticized. Ecologists point 1 that a cluster of tall buildings in a city often overburden public transportation and parking lot 2 Skyscrapers are also enormous 3 , and wasters, of electric power. In one recent year, the addition 4 17 million square feet of skyscraper office space in New York City raised the 5 daily demand for electricity by 120,000 kilowatts—enough to 6 the entire city of Albany for a day. Glass-walled skyscraper can be especially 7 The heat loss (or gain) through a wall of half-inch plate glass is more than ten times 8 through a typical masonry wall filled with insulation board. To lessen the strain 9 heating and air-conditioning equipment, 10 of skyscrapers have begun to use double-glazed panels of glass, and reflective glasses 11 with silver or gold mirror films that reduce 12 as well as heat gain. However, 13 skyscrapers raise the temperature of the surrounding air and 14 neighboring buildings. Skyscrapers put severe pressure on a city"s sanitation 15 , too. If fully occupied, the two World Trade Center towers in New York City would alone generate 2.15 million gallons of raw sewage each year—as 16 as a city the size of Stamford, Connecticut, which has a 17 of more than 109,000. Skyscrapers also 18 with television reception, block bird flyways, and obstruct air traffic. Still, people 19 to build skyscrapers for all the reasons that they have always built them—personal ambition and the 20 of owners to have the largest possible amount of rentable space.

单选题If△andrepresentsingledigitsinthecorrectlyworkedcomputationabove,whatisthevalueof△times?A.6B.10C.12D.15E.18

单选题OntheRoadisarepresentativeworkof____.

单选题Two hundred multiples of seven are chosen at random, and 300 multiples of eight are chosen at random. Approximately what percentage of the 500 selected numbers are odd? A. 20% B. 25% C. 40% D. 5O% E. 80%

单选题Alcohol-control advocates argue that television advertising plays a large role in leading teenagers to drink. In Hungary, however, where television advertising of alcoholic beverages has been prohibited since 1980, teenage alcohol use is higher than in some other European countries where such advertising is allowed. Which of the following statements draws the most reliable conclusion from the information given above? A. Hungarian culture, in general, views alcohol use more positively than do most other European cultures. B. Television advertising is the most effective way to encourage consumers to try a new alcoholic beverage. C. Television advertising cannot be the only factor that affects the prevalence of teenage drinking. D. Alcohol use among Hungarian teenagers has increased in recent years. E. Alcohol abuse is the greatest threat facing Hungarian teenagers.

单选题The hunter kept the lion's skin and head as ______. A. trophies B. fillet C. tulip D. clown

单选题Successful learning is not a(n) ______ activity but consists of four distinct stages in a specific order.

单选题Women entering top management become headlines due to the lack of ______.

单选题Many movies receive Udisparaging/U reviews from film experts and yet become extremely successful.

单选题Public protests can cause even the most powerful companies to change their policies. For example, an activist group recently staged a demonstration in front of the HydraBore corporate headquarters to protest the company's use of the chemical Ectomazathol. Within three months of the demonstration, HydraBore replaced Ectomazathol in its production plants with another chemical. Which of the following, if true, casts the most doubt on the connection between the public protest and the decision of the company to change chemicals? A. Preliminary studies show that the new chemical may be more carcinogenic than Ectomazathol. B. The recently introduced chemical that is replacing Ectomazathol is less expensive and more effective in its industrial application than Ectomazathol. C. HydraBore devoted no publicity efforts to announce its switch from Ectomazathol to the new chemical. D. As protests against HydraBore have become more frequent, the company has subsequently increased its public relations budget. E. The activist group that staged the demonstration has been linked to illegal acts of theft and sabotage within other corporate headquarters.

单选题The following data sufficiency problems consist of a question and two statements, labeled (1) and (2), in which certain data are given. You have to decide whether the data given in the statements are sufficient for answering the question. Using the data given in the statements plus your knowledge of mathematics and everyday facts (such as the number of days in July or the meaning of counterclockwise), you must indicate whether Ａ. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient. Ｂ. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient. Ｃ. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient. Ｄ. EACH statement ALONE is sufficient. Ｅ. Statements (1) and (2) TOGETHER are NOT sufficient.

单选题Of 40 applicants for a job, 32 had at least 5 years of prior work experience, 24 had advanced degrees, and i6 had at least 5 years of prior work experience and advanced degrees. How many of the applicants had neither 5 years of prior work experience nor advanced degrees? A. 0 B. 2 C. 4 D. 8 E. 16

单选题Science is a dominant theme in our culture. Since it touches almost every facet of our life, educated people need at least some acquaintance with its structure and operation. They should also have an understanding of the subculture in which scientists live and the kinds of people they are. An understanding of general characteristics of science as well as specific scientific concepts is easier to attain if one knows something about the things that excite and frustrate the scientist. This book is written for the intelligent student or lay person whose acquaintance with science is superficial; for the person who has been presented with science as a musty storehouse of dried facts. The book can be used to supplement a course in any science that attempts to provide a better understanding of science. We hope this book will lead readers to a broader perspective on scientific attitudes and a more realistic view of what science is, who scientists are, and what they do. In addition, readers may learn to appreciate the relationship between scientific views and some of the values and philosophies that are pervasive in our culture. We have tried to present in this book an accurate and up-to-date picture of the scientific community and the people who populate it. That population has in recent years come to comprise more and more women. This increasing role of women in the scientific subculture is not an unique incident but, rather, part of the trend evident in all segments of society as more women enter traditionally male-dominated fields and make significant contributions. In discussing these changes and contribution, however, we are faced with a language that is implicitly sexist, one that uses male nouns or pronouns in referring to unspecified individuals. To offset this built-in bias, we have adopted the policy of using plural nouns and pronouns whenever possible and, when absolutely necessary, alternating he and she. This policy is far from being ideal, but it is at least an acknowledgment of the inadequacy of our language in treating half of the human race equally. We have also tried to make the book entertaining as well as informative. Our approach is usually informal. We feel, as do many other scientists, that we shouldn"t take ourselves too seriously. As the reader may observe, we see science as a delightful pastime rather than as a grim and dreary way to earn a living.

单选题Whichofthefollowingfractionshasthegreatestvalue?

单选题A simple definition for a social network is the circles of people you know. There are circles of your close friends, others include your family, and yet others are of your acquaintances from church, your job, or community life. The Internet offers yet another opportunity for developing a social network with people who share something in common with you but whose paths you wouldn"t have necessarily crossed because they reside in other states or countries. Social networking on the Internet took off in popularity several years ago. Now there are over 200 sites where you can make new friends, find a date, exchange photos or make new business connections. At MySpace you can create a private community to share photos and interests with your network of friends or family members. It"s become very popular with the high school and college-aged set, but the number of older adults participating on MySpace is growing rapidly. LinkedIn is a good example of a business networking site where your profile is more like a resume with a focus on work experience and skill sets such as engineering or marketing. Although many of these social networking sites allow you to add pictures and personal information to attract new friends, it"s very important that you remember to stay safe on the Internet. Like any other public place, you need to be protective of your personal information when you"re visiting sites on the Internet, and there are some bits of personal data that you should not share or have easily accessible on a social website. The obvious information not to publicly reveal is your actual address and phone number. In many cases you may not even want to provide your email address. It"s not wise to fill in any form with your exact birthday, the true city where you were born or your mother"s family name. There are all the types of information used by banks and credit card companies to verify your identify. A clever thief will troll social sites gathering this sort of information in order to steal an identity. So, be mindful when you join a social networking site that not everyone who contacts you is a trustworthy individual. If you"re interested in giving social networking a try, browse a site you want to join as a "guest" for a while or ask some of your friends what sites they belong to. Fill out only the minimal profile information when you first join. You can always add more data later when you"ve become comfortable with the social interaction you have on that site. Also remember to remove information from your profile when you leave a site to which you don"t intend to return.

单选题The machinery had been wrecked so efficiently that police were sure it was a case of ______. A. vagabond B. sabotage C. paradox D. tachyon

单选题[Focus on the properties of conversational implicature] A. indeterminacy B. calculability C. defeasibility D. interestingness

单选题The Tricounty Bridge was supposed to relieve traffic in East Countway County. Although the bridge was opened last year, traffic in the county has gotten worse over the last year. To relieve the traffic situation in East Countway, therefore, the traffic commission should order the Tricounty Bridge closed. Which of the following, if true, gives the most support to the conclusion of the passage above? A. The increased traffic seen in East Countway over the last year is largely attributable to a large casino and resort hotel that opened for business shortly after the opening of the Tricounty Bridge. B. The Tricounty Bridge allows inhabitants of heavily populated West Countway County to reach East Countway in less than a half-hour, as opposed to the two hours the trip required before the opening of the bridge. C. The bridge is only open for the periods 7-9 a.m. and 3-5 p.m. on weekdays. D. Ship captains on the Countway River have complained that the bridge disrupts shipping on the river, thereby hurting the local economy. E. The bridge is unlikely ever to pay for itself with the current low toll payment.

单选题The questions in this group are based on the content of a passage. After reading the passage, choose the best answer to each question. Answer all questions following the passage on the basis of what is stated or implied in the passage. If you ask a person on the street to name the top predator in the sea, most people would probably say the great white shark. But they would be wrong. A great white shark is a relentless eating machine, superbly designed for its role at the top of the food chain, but the fact is, when a great white shark meets a killer whale, the killer whale has lunch. Not bad for an animal that is neither a whale nor a killer. The killer whale, known to scientists as orcinus orca, is one of the largest, fastest, and most intelligent predators in the world's oceans. The orca is not technically a whale, but rather the largest member of the dolphin family. The name "orca" has become the preferred name for the animal, because the name "killer whale" perpetuates the myth that orcas are dangerous to humans; in fact, there has never been a recorded incident of an orca attacking a human in the wild. This is not to say, however, that orcas are not dangerous to other marine species. Orcas in the wild have been observed consuming an astonishing variety of marine species, including salmon, tuna, sharks, giant squid, penguins, sea lions, dolphins, and even other whales, which the orcas hold under water until they drown. It is thought that the English name "killer whale" came from a mistranslation of the Spanish name asesina de ballenas, or "whale killer." Despite decades of study, many aspects of the creatures' life cycle and habits remain mysteries. Biologists only recently determined that there are, broadly speaking, three separate types of killer whale: residents, transients, and off shores. The residents live in large pods of up to 40 animals and primarily eat fish; these axe the most social of the killer whale types, with each pod having distinctive songs and complex social interactions. Transients are much quieter animals who roam large distances in groups of two to six while hunting marine mammals such as sea lions and dolphins. It is the transients who earned the orca the reputation of being whale killers. The third type of orca is the offshore variety, which rarely ventures toward coasts. These poorly understood animals travel in large groups, are somewhat smaller than their coastal cousins, and are thought to eat fish, sharks, and squid, but probably not other mammals.