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2052条

来源

题目内容

Ready4

Which of the following equations is NOT equivalent to $8 y^{2} = (x + 3) (x - 3)$ ?

Ready4

Although their primary attempt for business expansion would take place in the Indian market, manufacturers of low-cost cell phones could not afford to sacrifice the price-sensitive segment of developed markets because if they gave that up, their footing to enter India was very shaky.

Ready4

Weighing in on the controversial subject, the president announced that the potential construction of a new pipeline depends on if it will exacerbate the problem of carbon pollution or have a net effect that serves the national interest.

Ready4

Also known as the Tasmanian tiger, the thylacine, a species most observers agree to be driven to extinction by predation by humans, was the largest known carnivorous marsupial of modern times.

Ready4

The best way to instill good habits in a dog is to condition it with short verbal commands and edible rewards before they solidify bad habits when aging takes effect.

Ready4

Released in 1970, the creators of MASH were two Academy Award nominees, Robert Altman, who would go on to direct The Player, and director Ingo Preminger.

Whereas United States economic productivity grew at an annual rate of 3 percent from 1945 to 1965, it has grown at an annual rate of only about 1 percent since the early 1970's. What might be preventing higher productivity growth? Clearly, the manufacturing sector of the economy cannot be blamed. Since 1980, productivity improvements in manufacturing have moved the United States from a position of acute decline in manufacturing to one of world prominence. Manufacturing, however, constitutes a relatively small proportion of the economy. In 1992, goods-producing businesses employed only 19.1 percent of American workers, whereas service-producing businesses employed 70 percent. Although the service sector has grown since the late 1970's, its productivity growth has declined.Several explanations have been offered for this decline and for the discrepancy in productivity growth between the manufacturing and service sectors. One is that traditional measures fail to reflect service-sector productivity growth because it has been concentrated in improved quality of services. Yet traditional measures of manufacturing productivity have shown significant increases despite the undermeasurement of quality, whereas service productivity has continued to stagnate. Others argue that since the 1970's, manufacturing workers, faced with strong foreign competition, have learned to work more efficiently in order to keep their jobs in the United States, but service workers, who are typically under less global competitive pressure, have not. However, the pressure on manufacturing workers in the United States to work more efficiently has generally been overstated, often for political reasons. In fact, while some manufacturing jobs have been lost due to foreign competition, many more have been lost simply because of slow growth in demand for manufactured goods.[hl:4][hl:3][hl:2][hl:1]Yet another explanation blames the federal budget deficit[/hl:1][/hl:2][/hl:3][/hl:4]: if it were lower, interest rates would be lower too, thereby increasing investment in the development of new technologies, which would spur productivity growth in the service sector. There is, however, no dearth of technological resources; rather, managers in the service sector fail to take advantage of widely available skills and machines. High productivity growth levels attained by leading- edge service companies indicate that service-sector managers who wisely implement available technology and choose skillful workers can significantly improve their companies' productivity. The culprits for service-sector productivity stagnation are the forces—such as corporate takeovers and unnecessary governmental regulation—that distract managers from the task of making optimal use of available resources.

Ready4

Although the proprietor of the restaurant agreed to revise the menu, he said that it must be displayed outside the restaurant so that both old patrons and new customers would notice the revised menu before entering.

Archaeology as a profession faces two major problems. First, it is the poorest of the poor. Only paltry sums are available for excavating and even less is available for publishing the results and preserving the sites once excavated. Yet archaeologists deal with priceless objects every day. Second, there is the problem of illegal excavation, resulting in museum-quality pieces being sold to the highest bidder.I would like to make an outrageous suggestion that would at one stroke provide funds for archaeology and reduce the amount of illegal digging. I would propose that scientific archaeological expeditions and governmental authorities sell excavated artifacts on the open market. Such sales would provide substantial funds for the excavation and preservation of archaeological sites and the publication of results. At the same time, they would break the illegal excavator's grip on the market, thereby decreasing the inducement to engage in illegal activities.You might object that professionals excavate to acquire knowledge, not money. Moreover, ancient artifacts are part of our global cultural heritage, which should be available for all to appreciate, not sold to the highest bidder. I agree. Sell nothing that has unique artistic merit or scientific value. But, you might reply, everything that comes out of the ground has scientific value. Here we part company. Theoretically, you may be correct in claiming that every artifact has potential scientific value. Practically, you are wrong.I refer to the thousands of pottery vessels and ancient lamps that are essentially duplicates of one another. [hl:4]In one small excavation in Cyprus[/hl:4], archaeologists recently uncovered 2,000 virtually indistinguishable small jugs in a single courtyard. Even precious royal seal impressions known as l'melekh handles have been found in abundance —more than 4,000 examples so far.The basements of museums are simply not large enough to store the artifacts that are likely to be discovered in the future. There is not enough money even to catalog the finds; as a result, they cannot be found again and become as inaccessible as if they had never been discovered. Indeed, with the help of a computer, sold artifacts could be more accessible than are the pieces stored in bulging museum basements. Prior to sale, each could be photographed and the list of the purchasers could be maintained on the computer. A purchaser could even be required to agree to return the piece if it should become needed for scientific purposes.It would be unrealistic to suggest that illegal digging would stop if artifacts were sold on the open market. But the demand for the clandestine product would be substantially reduced. Who would want an unmarked pot when another was available whose provenance was known, and that was dated stratigraphically by the professional archaeologist who excavated it?

Ready4

Independent movie makers have realized that movies without bankable stars are difficult to produce, market, and are hard to distribute.

Ready4

The Association of Southeast Asian Nations was established to draw its member nations into a closer economic and political relationship; it will strengthen its charter someday, but only if leading members, including Singapore, Indonesia, and Thailand, were to place pressure on the smaller members to yield to the common interest.

Ready4

Box	$B1$	$B2$	$B3$	$B4$	$B5$	$B6$
Fraction of the Total Value of Rachel's Order	$\frac{1}{<font color='#FE8080'>4</font>}$	$\frac{5}{24}$	$\frac{3}{16}$	$\frac{1}{6}$	$\frac{1}{8}$	$\frac{1}{16}$

Rachel submitted an order for several items from a popular online retail site. Her items were packaged in 6 separate boxes and were delivered on Monday and Tuesday of this past week. Each box was labeled $B1$ , $B2$ , $B3$ , $B4$ , $B5$ , or $B6$ . The table shows the value of each box as a fraction of the total value of Rachel's order. If the delivery on Monday had a value greater than $\frac{1}{2}$ of the total value of Rachel's order, was box $B4$ delivered on Monday?

(1) $B3$ and $B5$ were delivered on Monday.

(2) $B1$ and $B2$ were delivered on Tuesday.

Ready4

Short Story	$S1$	$S2$	$S3$	$S4$	$S5$	$S6$
Fraction of the Total Reading Assignment	$\frac{1}{3}$	$\frac{1}{<font color='#FE8080'>4</font>}$	$\frac{1}{6}$	$\frac{1}{9}$	$\frac{1}{12}$	$\frac{1}{18}$

Hannah was given an assignment to read $6$ short stories this week. She does her reading on Wednesday and Thursday. Her teacher labeled the stories $S1$ , $S2$ , $S3$ , $S4$ , $S5$ , and $S6$ . The table shows the percentage of each story as a fraction of the total number of pages of the entire reading assignment. If Hannah read more than $\frac{1}{2}$ of the entire assignment on Wednesday and she always completed a short story in one sitting, did she read $S6$ on Wednesday?

(1) Hannah read $S1$ and $S4$ on Thursday.

(2) Hannah read $S2$ and $S5$ on Wednesday.

Ready4

Similarities across 200 genes related to hearing and deafness that were discovered in new research have yielded proof of echolocation capabilities in cetaceans, including dolphins, that were evolving independently of but convergent with the sonar hearing capabilities for which bats are well-known.

Ready4

He succeeded more as a public novelty compared to a presidential candidate, Ross Perot nevertheless established in the 1992 and 1996 campaigns that candidates running outside the two major U.S. parties could have an impact on the national discourse.

Ready4

A Spanish red wine called Tempranillo exhibits a plummy flavor and is considered as a drink fit for a gourmet by most locals, though it is virtually unheard of outside Navarra.

Ready4

What is the volume of the cube above?

(1) The length of diagonal $MN$ is $<font color='#FE8080'>4</font>\sqrt{3}$ .

(2) The surface area of the cube is 96 square inches.

Ready4

Total cloud inversion, which looks like a sea of clouds, occurs above the Grand Canyon about once every decade but had rarely been captured on film until recently.

First identified in 1969, komatiites are Earth's oldest known volcanic rocks and contain three times as much magnesium as do most volcanic rocks. This chemical composition suggests that komatiites formed from the hottest lava known ever to have erupted: a high concentration of magnesium changes the physical properties of lava so that unusually high temperatures would be required for the lava to exist as a liquid.Komatiites' discovery was surprising in light of then-current geological theories about magmas, molten rock that forms in the Earth's mantle (the layer beneath the crust) and composes volcanic lava eruptions. Prior to 1960, geologists Bowen and Hess disagreed over whether or not the very high temperatures needed to produce magmas rich in magnesium could have existed on Earth. Hess suggested that the presence of water, probably released from minerals decomposing in the Earth's mantle, might have meant that a high-magnesium magma could have existed at a lower temperature. But Bowen showed experimentally that the high temperatures were indeed necessary. By 1960, it was generally accepted that volcanic rocks with such high levels of magnesium could not exist, and thus the discovery of komatiites changed geologists' assumptions about the characteristics of the Earth's mantle around the time of the formation of komatiites, between 2.5 and 4 billion years ago.