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According to a recent study, the elderly in the United States are four times more likely to give regular financial aid to their children as to receive it from them.
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For all his professed disdain of such activities, Auden was an inveterate literary gossip.
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PREP07 Test 1
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Tiger beetles are such fast runners that they can capture virtually any nonflying insect. However, when running toward an insect, the beetles intermittently stop, and then, a moment later, resume their attack. Perhaps they cannot maintain their pace and must pause for a moment's rest; but an alternative hypothesis is that while running tiger beetles are unable to process the resulting rapidly changing visual information, and so quickly go blind and stop.Which of the following, if discovered in experiments using artificially moved prey insects, would support one of the two hypotheses and undermine the other?
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PREP07 Test 1
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Which of the following most accurately states the central purpose of the passage?
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Despite the recent election of a woman to the office of prime minister, the status of women in Pakistan is little changed from how it was in the last century.
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OG18-语文分册 OG19-语文分册
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Nearly two tons of nuclear-reactor fuel have already been put into orbit around the Earth, and the chances of a collision involving such material increase greatly as the amount of both space debris and satellites continue to rise.
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Advertisement: Are you having trouble returning your opponents' power serves? The new Spring- Strung rackets are designed to improve your tennis game overnight without lessons. Even rank amateurs can effortlessly increase the speed and force of their volleys by 25 percent. You too can achieve the power of a professional player with the Spring-Strung racket.Someone who accepted the reasoning in the advertisement above would be making which one of the following assumptions?
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 In the triangle above, what is the value of b?(1)$$c=2\sqrt2$$(2)x = 45
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If the length of Wanda's telephone call was rounded up to the nearest whole minute by her telephone company, then Wanda was charged for how many minutes for her telephone call?(1) The total charge for Wanda's telephone call was $6.50.(2) Wanda was charged $0.50 more for the first minute of the telephone call than for each minute after the first.
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What is the perimeter of isosceles triangle MNP ?(1) MN = 16(2) NP = 20
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OG20
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In a survey of retailers, what percent had purchased computers for business purposes?(1) 85 percent of the retailers surveyed who owned their own store had purchased computers for business purposes.(2) 40 percent of the retailers surveyed owned their own store.
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Of the companies surveyed about the skills they required in prospective employees, 20 percent required both computer skills and writing skills. What percent of the companies surveyed required neither computer skills nor writing skills?(1) Of those companies surveyed that required computer skills, half required writing skills.(2) 45 percent of the companies surveyed required writing skills but not computer skills.
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If X and Y are points in a plane and X lies inside the circle C with center O and radius 2, does Y lie inside circle C ?(1) The length of line segment XY is 3.(2) The length of line segment OY is 1.5.
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In the xy-plane, if line k has negative slope and passes through the point (-5,r), is the x-intercept of line k positive?(1) The slope of line k is -5.(2) r>0
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Does the integer k have at least three different positive prime factors?(1)$$\frac{k}{15}$$ is an integer.(2)$$\frac{k}{10}$$is an integer.
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OG17
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In City X last April, was the average (arithmetic mean) daily high temperature greater than the median daily high temperature?(1) In City X last April, the sum of the 30 daily high temperatures was 2,160°.(2) In City X last April, 60 percent of the daily high temperatures were less than the average daily high temperature.
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Of the 66 people in a certain auditorium, at most 6 people have their birthdays in any one given month. Does at least one person in the auditorium have a birthday in January?(1) More of the people in the auditorium have their birthday in February than in March.(2) Five of the people in the auditorium have their birthday in March.
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Last year the average (arithmetic mean) salary of the 10 employees of Company X was $42,800. What is the average salary of the same 10 employees this year?(1) For 8 of the 10 employees, this year's salary is 15 percent greater than last year's salary.(2) For 2 of the 10 employees, this year's salary is the same as last year's salary.
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In a certain classroom, there are 80 books, of which 24 are fiction and 23 are written in Spanish. How many of the fiction books are written in Spanish?(1) Of the fiction books, there are 6 more that are not written in Spanish than are written in Spanish.(2) Of the books written in Spanish, there are 5 more nonfiction books than fiction books.
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Which of the following best describes the purpose of the highlight sentence?
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