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OG18-数学分册
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A garden center sells a certain grass seed in 5-pound bags at $13.85 per bag, 10-pound bags at $20.43 per bag, and 25-pound bags at $32.25 per bag. If a customer is to buy at least 65 pounds of the grass seed, but no more than 80 pounds, what is the least possible cost of the grass seed that the customer will buy?
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OG18-数学分册
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At a certain pizzeria,$$\frac{1}{8}$$ of the pizzas sold in one week were mushroom and $$\frac{1}{3} $$ of the remaining pizzas sold were pepperoni. If n of the pizzas sold were pepperoni, how many were mushroom?
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OG18-数学分册
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David used part of $100,000 to purchase a house. Of the remaining portion, he invested $$\frac{1}{3}$$ of it at 4 percent simple annual interest and $$\frac{2}{3}$$ of it at 6 percent simple annual interest. If after a year the income from the two investments totaled $320, what was the purchase price of the house?
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OG18-数学分册
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Jonah drove the first half of a 100-mile trip in x hours and the second half in y hours. Which of the following is equal to Jonah's average speed, in miles per hour, for the entire trip?
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OG18-数学分册
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In the xy-plane, the points (c,d), (c,–d), and (–c,–d) are three vertices of a certain square. If c < 0 and d > 0, which of the following points is in the same quadrant as the fourth vertex of the square?
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OG18-数学分册
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If the volume of a ball is 32,490 cubic millimeters, what is the volume of the ball in cubic centimeters? (1 millimeter = 0.1 centimeter)
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OG18-数学分册
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 In the figure shown above, line segment QR has length 12, and rectangle MPQT is a square. If the area of rectangular region MPRS is 540, what is the area of rectangular region TQRS ?
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OG18-数学分册
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If m is an even integer, v is an odd integer, and m > v > 0, which of the following represents the number of even integers less than m and greater than v ?
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OG18-语文分册 OG19-语文分册 OG20-语文分册
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Once numbering in the millions worldwide, it is estimated that the wolf has declined to 200,000 in 57 countries, some 11,000 of them to be found in the lower 48 United States and Alaska.
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OG18-语文分册 OG19-语文分册 OG20-语文分册
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In preparation for the prediction of a major earthquake that will hit the state, a satellite-based computer network is being built by the California Office of Emergency Services for identifying earthquake damage and to pinpoint the most affected areas within two hours of the event.
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OG18-语文分册 OG19-语文分册 OG20-语文分册
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Despite Japan's relative isolation from world trade at the time, the prolonged peace during the Tokugawa shogunate produced an almost explosive expansion of commerce.
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OG18-语文分册 OG19-语文分册 OG20-语文分册
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Created in 1945 to reduce poverty and stabilize foreign currency markets, the World Bank and the International Monetary Fund have, according to some critics, continually struggled to meet the expectations of their major shareholders—a group comprising many of the world's rich nations—but neglected their intended beneficiaries in the developing world.
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OG18-语文分册 OG19-语文分册 OG20-语文分册
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Whether they will scale back their orders to pre-2003 levels or stop doing business with us altogether depends on whether the changes that their management has proposed will be fully implemented.
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OG18-语文分册 OG19-语文分册 OG20-语文分册
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Kudzu, an Asian vine that has grown rampantly in the southern United States since introducing it in the 1920s to thwart soil erosion, has overrun many houses and countless acres of roadside.
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OG18-语文分册 OG19-语文分册 OG20-语文分册
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The growth projected for these storms in different computerized weather models varies widely.
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OG18-语文分册
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The passage suggests that Santer and Michaels would be most likely to DISAGREE over which of the following issues?
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OG18-语文分册
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The passage suggests which of the following about the contributions of African Americans to the United States war effort during the First World War?
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OG18-语文分册
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The author of the passage refers to Washington's call to African Americans in 1895 primarily in order to
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OG18-语文分册
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The passage indicates which of the following about Du Bois`s attitude toward Washington?
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OG18-语文分册
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The author of the passage mentions the effect of acquisitions on national economies most probably in order to
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