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Derek's cell phone bill shows total minutes used for each of two categories: peak minutes and off peak minutes. If Derek used a total of 75 minutes last month, how many off peak minutes did he use?(1) Derek used twice as many off peak minutes as peak minutes last month.(2) Last month, Derek exceeded his allowance of off peak minutes by 25 percent.
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Did Jennifer spend more than x dollars at her favorite sushi restaurant, including the tip?(1) Jennifer left a tip equal to 20 percent of the cost of the meal.(2) Jennifer's meal cost (x- 10) dollars excluding the tip.
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David is hiking the Appalachian Trail, which is 2100 miles long. He plans to go into town to call home once he has hiked more than 20 percent of the total distance. If David has already hiked 1 percent of the trail, what is the minimum number of additional miles that he must hike before he goes into town?
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数论
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Is three digit integer n divisible by 12?(1) n is divisible by 4.(2) The hundreds digit and the units digit of n are divisible by 3.
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Linguist Carin Zinter, who studies the languages of ancient civilizations, is still mystified as to how the written word arose so rapidly at the same time in history across many different cultures.
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When computer hackers released the "I Love You" virus in 2000, it raced around the world deleted music files and images, as well as raiding email addresses to multiply itself and send itself and other emails onward.
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Two out of every five marathon runners in the United States also swim as a means of staying fit.
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In 1993, Egyptologists using a mechanized robot discovered a small door in the Great Pyramid that are believed to lead to a series of tunnels under the pyramid: however, the Egyptian government has denied the archaeologists' request to open the door so we may never know what secrets the Great Pyramid still holds.
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If x and y are both positive integers, what is their greatest common factor?(1) x and y are prime numbers.(2) x and y share only one common divisor.
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According to the author, Feather is best described asI. a modern twentieth-century poetII. a woman poetIII. a Native American poet
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The author implies that Mona Feather's message is actually "deeper" than the message attributed to her by radical feminists because
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The author would probably regard which of the following poets as the most like Mona Feather in artistic significance?
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This passage was most likely excerpted from:
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The main idea of the passage is:
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One of the more reliable methods of determining regional climatic conditions in prehistoric periods is to examine plant pollen trapped in glacial ice during ancient times. By comparing such pollen samples with spores taken from modern vegetation, scientists can figure out approximately what the weather was like at the time of pollen deposition. Furthermore, by submitting the prehistoric samples to radiocarbon dating techniques, we can also determine when certain climatic conditions were prevalent in that portion of the globe.Which one of the following may be inferred from the information in the passage?
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PREP08 Test 2
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Every fall Croton's jays migrate south. The jays always join flocks of migrating crookbeaks with which they share the same summer and winter territories. If a jay becomes separated from the crookbeaks it is accompanying, it wanders until it comes across another flock of crookbeaks. Clearly, therefore, Croton's jays lack the navigational ability to find their way south on their own.Which of the following, if true, most strengthens the argument?
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In tests for pironoma, a serious disease, a false positive result indicates that people have pironoma when, in fact, they do not; a false negative result indicates that people do not have pironoma when, in fact, they do. To detect pironoma most accurately, physicians should use the laboratory test that has the lowest proportion of false positive results.>Which of the following, if true, gives the most support to the recommendation above?
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Fossilized teeth of an extinct species of herbivorous great ape have on them phytoliths, which are microscopic petrified remains of plants. Since only phytoliths from certain species of plants are found on the teeth, the apes' diet must have consisted only of those plants.The argument assumes which one of the following?
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If a person chooses to walk rather than drive, there is one less vehicle emitting pollution into the air than there would be otherwise. Therefore if people would walk whenever it is feasible for them to do so, then pollution will be greatly reduced.Which one of the following is an assumption on which the argument depends?
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In North America there has been an explosion of public interest in, and enjoyment of,opera over the last three decades. The evidence of this explosion is that of the 70 or so professional opera companies currently active in North America,45 were founded over the course of the last 30 years.The reasoning above assumes which one of the following?
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