单选题The time it took car P to travel 600 miles was 2 hours less than the time it took car R to travel the same distance. If car P's average speed was 10 miles per hour greater than that of car R, what was car R's average speed, in miles per hour? A. 40 B. 50 C. 60 D. 70 E. 80

单选题The pilot of a small aircraft with a 40-gallon fuel tank wants to fly to Cleveland, which is 480 miles away. The pilot recognizes that the current engine, which can fly only 8 miles per gallon, will not get him there. By how many miles per gallon must the aircraft's fuel efficiency be improved to make the flight to Cleveland possible? A. 2 B. 4 C. 12 D. 40 E. 160

单选题A growing taste for shark steaks and shark-fin soup has for the first time in 400 million years put the scourge of the sea at the wrong end of the food chain. Commercial landings of this toothsome fish have doubled every year since 1986, and shark populations are plunging. It is hardly a case of good riddance. Sharks do for gentler fish what lions do for the wildebeest; they check populations by feeding on the weak. Also, sharks apparently do not get cancer and may therefore harbor clues to the nature of the disease. Finally, there is the issue of motherhood. Sharks are viviparous. That is, they bear their young alive and swimming (not sealed in eggs) after gestation periods lasting from nine months to two years. Shark mothers generally give birth to litters of from eight to twelve pups and bear only one litter every other year. This is why sharks have one of the lowest fecundity rates in the ocean. The female cod, for example, spawns annually and lays a few million eggs at a time. If three quarters of the cod were to be fished this year, they could be back in full force in a few years. But if humans took that big of a bite out of the sharks, the population would not recover for 15 years. So, late this summer, if all goes according to plan, the shark will join the bald eagle and the buffalo on the list of managed species. The federal government will cap the U.S. commercial catch at 5,800 metric tons, about half of the 1989 level, and limit sportsmen to two sharks per boat. Another provision discourages finning, the harvesting of shark fins alone, by limiting the weight of fins to 7 percent of that of all the carcasses. Finning got under the skin of environmentalists, and the resulting anger helped to mobilize support for the new regulations. Finning itself is a fairly recent innovation. Shark fins contain noodlelike cartilaginous tissues that Chinese chefs have traditionally used to thicken and flavor soup. Over the past few years rising demand in Hong Kong has made the fins be worth considerably more to the fisherman than the average price of about $10 a pound. But can U.S. quotas save shark species that wander the whole Atlantic? The blue shark, for example, migrates into the waters of something like 23 countries. John G." Casey, a biologist with the National Marine Fishheries Service Research Center in Narragansett, R.I., admits that international coordination will eventually be necessary, but he supports U.S. quotas as a first step in mobilizing to other nations. Meanwhile the commercial fishermen are not waiting for the new rules to take effect. "There is a pre-quota rush on sharks," Casey says, "and it"s going on as we speak."

单选题A certain tire company can produce tires at a cost of $22,500 per batch plus $9 per tire. The company can sell tires to the wholesaler at a cost of $20 per tire. If a batch of 15,000 tires is produced and sold, what is the company's profit per tire? A. $9.00 B. $9.50 C. $11.00 D. $13.50 E. $20.00

单选题[Focus on the formality] A. domicile B. purchase C. chuck D. diminutive

单选题A type of extra-large SUV averages 12.2 miles per gallon (mpg) on the highway, but only 7.6 mpg in the city. What is the maximum distance, in miles, that this SUV could be driven on 25 gallons of gasoline? A. 190 B. 284.6 C. 300 D. 305 E. 312

单选题 While there's never a good age to get cancer, people in their 20s and 30s can feel particularly isolated. The average age of a cancer patient at diagnosis is 67. Children with cancer often are treated at pediatric (小儿科的) cancer centers, but young adults have a tough time finding peers, often sitting side-by-side during treatments with people who could be their grandparents. In her new book Crazy Sexy Cancer Tips, writer Kris Carr looks at cancer from the perspective of a young adult who confronts death just as she's discovering life. Ms. Carr was 31 when she was diagnosed with a rare form of cancer that had generated tumors on her liver and lungs. Ms. Carr reacted with the normal feelings of shock and sadness. She called her parents and stocked up on organic food, determined to become a "full-time healing addict." Then she picked up the phone and called everyone in her address book, asking if they knew other young women with cancer. The result was her own personal “cancer posse”: a rock concert tour manager, a model, a fashion magazine editor, a cartoonist and a MTV celebrity, to name a few. This club of "cancer babes" offered support, advice and fashion tips, among other things. Ms. Carr put her cancer experience in a recent Learning Channel documentary, and she has written a practical guide about how she coped. Cancer isn't funny, but Ms. Carr often is. She swears, she makes up names for the people who treat her (Dr. Fabulous and Dr. Guru), and she even makes second opinions sound fun ("cancer road trips," she calls them). She leaves the medical advice to doctors, instead offering insightful and practical tips that reflect the world view of a young adult. "I refused to let cancer ruin my party," she writes. "There are just too many cool things to do and plan and live for." Ms. Carr still has cancer, but it has stopped progressing. Her cancer tips include using time- saving mass e-mails to keep friends informed, sewing or buying fashionable hospital gowns so you're not stuck with regulation blue or gray and playing Gloria Gaynor’s "I Will Survive" so loud your neighbors call the police. Ms. Carr also advises an eyebrow wax and a new outfit before yon tell the important people in your life about your illness. "People you tell are going to cautiously and not so cautiously try to see the cancer, so dazzle them instead with your miracle," she writes. While her advice may sound superficial, it gets to the heart of what every cancer patient wants: the chance to live life just as she always did, and maybe better.

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The following questions present a sentence, part of which or all of which is underlined. Beneath the sentence you will find five ways of phrasing the underlined part. The first of these repeats the original; the other four are different. If you think the original is best, choose the first answer; otherwise choose one of the others. These questions test correctness and effectiveness of expression. In choosing your answer, follow the requirements of standard written English; that is, pay attention to grammar, choice of words, and sentence construction. Choose the answer that produces the most effective sentence; this answer should be clear and exact, without awkwardness, ambiguity, redundancy, or grammatical error.

单选题A static technocratic order, by contrast, requires a very different sort of personality: a droned who does what he is told and shuns novelty, someone who avoids facing, or ______ challenges.

单选题The actor amused the audience by ______ some well-known people. A. embroidering B. rigging C. yelping D. mimicking

单选题Research on animal intelligence always makes me wonder just how smart humans are. 41 the fruit-fly experiments described in Carl Zimmer"s piece in the Science Times on Tuesday. Fruit flies who were taught to be smarter than the average fruit fly 42 to live shorter lives. This suggests that 43 bulbs burn longer, that there is an 44 in not being too terrifically bright. Intelligence, it 45 , is a high-priced option. It takes more upkeep, burns more fuel and is slow 46 the starting line because it depends on learning—a 47 process—instead of instinct. Plenty of other species are able to learn, and one of the things they"ve apparently learned is when to 48 . Is there an adaptive value to 49 intelligence? That"s the question behind this new research. I like it. Instead of casting a wistful glance 50 at all the species we"ve left in the dust I.Q.-wise, it implicitly asks what the real 51 of our own intelligence might be. This is 52 the mind of every animal I"ve ever met. Research on animal intelligence also makes me wonder what experiments animals would 53 on humans if they had the chance. Every cat with an owner, 54 , is running a small-scale study in operant conditioning. We believe that 55 animals ran the labs, they would test us to 56 the limits of our patience, our faithfulness, our memory for terrain. They would try to decide what intelligence in humans is really 57 , not merely how much of it there is. 58 , they would hope to study a 59 question: Are humans actually aware of the world they live in? 60 the results are inconclusive.

单选题Perhaps what most separates motivational superstars from others is that they live life on purpose— they are doing what they fully believe they were ______ here to do.

单选题The newly built factory is in urgent need of a number of skilled and ______ workers.

单选题Ifa≠0,and,thenb=A.(5-a)(3+a)B.(3-a)(5+a)C.2a2-15D.-3a2+a-15E.15-2a2

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. One of the best sources modem scholars have for learning about Hellenistic Egypt is the large supply of papyrus fragments that have turned up in the Egyptian desert over the last century. Papyrus is a thick type of paper made from a reedy plant found in Egypt. Papyrus is much tougher than the wood-pulp paper used in modern society; whereas a book produced today will most likely fall apart within a century, there are papyrus fragments that are still legible over 2,000 years after scribes wrote on them. It is primarily by accident that any of these fragments have survived. Most of the surviving fragments have been found in ancient garbage dumps that were covered over by the desert and preserved in the dry heat. The benefit of this type of archeological find is that these discarded scraps often give us a more accurate picture of the daily lives of ancient Egyptians--their business affairs, personal correspondence, and religious pleas--than the stone engravings and recorded texts that were intended to be passed down to later generations. One of the most important papyrus discoveries of recent years was the revelation in 2001 that a scrap of papyrus that had been discarded and used to wrap a mummy contained 110 previously unknown epigrams (short, witty poems) by the Hellenistic poet Posidippus (ca. 280-240 B.C.). Posidippus lived in Alexandria and benefited from the support of King Ptolemy II Philadelphos (ruled 284-246 B.C.). These new epigrams have yielded fascinating insight into the court culture and literary sensibilities of early Hellenistic Egypt. King Ptolemy, of course, was also a sponsor of the famous library of Alexandria, the greatest depository of knowledge in the ancient world. According to the twelfth-century Byzantine writer John Tzetzes, the ancient library contained nearly half a million papyrus scrolls. If that library had not burned down, maybe archeologists today would not have to spend so much of their time sorting through ancient trash!

单选题Although the resistance groups do not show great military ______, they frequently penetrate deep into the interior. A. prowess B. prowl C. psalm D. psyche

单选题Which of the following is NOT a process of the lexical change? A. INVENTION. B. ACRONYM. C. LEXICON.

单选题The promoters of the Springfield music festival estimated a 50 percent increase in ticket sales from last year, but because of bad weather, ticket sales actually decreased by 25 percent from last year's level. What percent of the projected ticket sales were the actual ticket sales? A. 45 B. 50 C. 55 D. 65 E. 75

单选题Sam is training for the marathon. He drove 12 miles from his home to the Grey Hills Park and then ran 6 miles to Red Rock, retraced his path back for 2 miles, and then ran 3 miles to Rock Creek. If he is then n miles from home, what is the range of possible values for n? A. 1≤n≤23 B. 3≤n≤21 C. 5≤n≤9 D. 6≤n≤18 E. 9≤n≤15