搜索结果 | GMAT考满分，百万出国党的口碑之选。

GMAT考满分·题库

收录题目9362道

搜索结果共9178条

来源	题目内容
Magoosh	Dolphins can swim at high speeds and achieve high acceleration in the water. In 1936, Sir James Gray calculated the force dolphins should be able to exert based on their physiology. He concluded that the propulsive force they were able to exert was not enough to explain how fast they swim and accelerate. In the 2000s, experimenters used special computer-enhanced measurements of the water in which dolphins were swimming. Through mathematical modeling, they were able to measure the force dolphins exert with their tails. As it turns out, dolphins exert considerably more force with their tails than Sir James Gray or anybody else ever expected. Therefore, the force exerted by their tails easily explains how fast they swim and accelerate.In the argument, the two portions in boldface play which of the following roles?
OG18-语文分册	Typically during thunderstorms most lightning strikes carry a negative electric charge; only a few carry a positive charge. Thunderstorms with unusually high proportions of positive-charge strikes tend to occur in smoky areas near forest fires. The fact that smoke carries positively charged smoke particles into the air above a fire suggests the hypothesis that the extra positive strikes occur because of the presence of such particles in the storm clouds. Which of the following, if discovered to be true, most seriously undermines the hypothesis?
OG12 GWD PREP08 Test 2	The yield of natural gas from Norway's Troll gas field is expected to increase annually until the year 2005 and then to stabilize at six billion cubic feet a day, which will allow such an extraction rate at least for 50 years' production.
GWD PREP08 Test 2	Unlike most other mergers in the utility industry, which have been driven by the need to save money and extend companies' service areas, the merger of the nation's leading gas and electric company is intended to create a huge marketing network for the utilities in question with states opening their utility markets to competition.
GWD	At the turn of the twentieth century, forest covering as much as 90 percent of Thailand and accommodating as many as 300,000 elephants, a third of them domesticated and performing various essential tasks.
PREP07 Test 2	Paleontologist: About 2.8 million years ago, many species that lived near the ocean floor suffered substantial population declines. These declines coincided with the onset of an ice age. The notion that cold killed those bottom-dwelling creatures outright is misguided, however; temperatures near the ocean floor would have changed very little. Nevertheless, the cold probably did cause the population declines, though indirectly. Many bottom-dwellers depended for food on plankton, small organisms that lived close to the surface and sank to the bottom when they died. Most probably, the plankton suffered a severe population decline as a result of sharply lower temperatures at the surface, depriving many bottom-dwellers of food.In the paleontologist's reasoning, the two portions in boldface play which of the following roles?
Manhattan	A new study published by the Journal of the American Medical Association has found that women who exercise regularly and maintained a healthy diet are at low risk of sudden cardiac death during physical exertion that is moderate to vigorous in nature.
Ready4	Although the earliest records we have of Arabic sources using the numeral zero date back to 773 C.E., the fact that the Arabic civilization had been performing advanced mathematical operations for a century before that indicates that they understood the concept of numerical zero long before they ever put it in writing. After all, Indians and Babylonians had both developed the concept independently before then, and the Arabic people could reasonably be expected to have acquired similar concepts. And although there is a dearth of writing indicating the exchange, by the 6th century C.E. Arabs had been in close contact with Indian civilization for a prolonged period. In the argument given, the two portions in boldface play which of the following roles?
Ready4	Many car dealers provide leasing services that allow an individual uninterested in purchasing a car to be able to use one when needed and to put an initial payment toward a purchase should the consumer later decide to buy the car once the contract has expired.
Ready4	Igor Stravinsky’s familiarity with the music and folklore of Russia, France, and that of England were essential to his development as a composer, underpinning both his modern sensibility as much as his major works.
OG17 OG18 OG19 OG20 OG2022	The table shows the numbers of packages shipped daily by each of five companies during a 4-day period. The standard deviation of the numbers of packages shipped daily during the period was greatest for which of the five companies?
OG16 OG17 OG18 OG19 OG20 OG2022	The dial shown above is divided into equal-sized intervals. At which of the following letters will the pointer stop if it is rotated clockwise from S through 1,174 intervals?
PREP07 Test 2	The table above shows the amount of waste material, in tons, recycled by each of five counties in a single year and the amount of waste material, also in tons, that was disposed of in landfills by the five counties in that year. Which county had the lowest ratio of waste material disposed of to waste material recycled in the year reported in the table?
Magoosh	Beethoven's Eighth Symphony, a shorter and denser work than the Seventh Symphony, and when Czerny asked why it was less popular than the Seventh, he gruffly replied, "Because the Eighth is so much better!"
	Under a provision of the Constitution that was never applied, Congress has been required to call a convention for considering possible amendments to the document when formally asked to do it by the legislatures of two-thirds of the states.
	Scientist: Evolutionary biology has long held that the most attractive males of a species, defined as those with the highest quality physical traits that have no Darwinian survival value, will draw the most female mates. The resulting male offspring will inherit that attractiveness and themselves have more children as a result, thus ensuring widespread dissemination of the grandparents' genes. Recently, however, scientists have found that the sons of "high quality" male flycatchers failed to inherit the father's mating status. Further, the most attractive males were so busy mating that they neglected their offspring; as a result, the sons of homelier birds, who took better care of their offspring, had more success at propagating the species. The two portions in boldface play which of the following roles in the scientist's argument?
Ready4	Only a reduction of 15 percent in the number of people who visit the Orangetown Department of Motor Vehicles will allow the wait times there to fall to reasonable levels. A new branch, if opened in Duralia, 20 miles away, would be conveniently located for fully 40 percent of current visitors to the Orangetown DMV. Nevertheless, analysts reject the idea that opening a new DMV branch in Duralia would significantly lower the wait times in Orangetown. Which of the following, if true, most supports the analysts’ opinion?
OG2022	Which of the following best completes the passage below? Established companies concentrate on defending what they already have. Consequently, they tend not to be innovative themselves and tend to underestimate the effects of the innovations of others. The clearest example of this defensive strategy is the fact that __________.
PREP07 Test 2	$$R=\frac{24\frac{F}{N}}{P+\frac{A}{12}}$$ A certain bank uses the formula above to approximate the annual percentage rate R of a monthly installment loan. Which of the following is an equivalent form of the formula?
Magoosh	With a global team of analysts studying every move of the Asian market, Boisin Capital, prepared each morning for that day's major market trends that its accuracy on predicting an "up" or "down" day in the Western Markets is higher than 98%.