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The author of the passage suggests which of the following about African American workers who participated in union activities in the 1930's and 1940's?

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The discovery that Earth's inner core rotates independently of and more quickly than Earth's outer layers is responsible for advancing studies of the flow of heat from the inner through the outer planet and of the formation and periodic reversal in direction of Earth's magnetic field.

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More than fifty years after the Second World War, a number of African American soldiers were awarded - some of them posthumously - with the Congressional Medal of Honor, which was the nation's highest military award, and which was long overdue in recognition of their outstanding bravery.

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题目： If the average (arithmetic mean) of 5 different numbers is 12, what is the median of the 5 numbers?(1) The median of the 5 numbers is equal to $$\frac{1}{3}$$ of the sum of the 4 numbers other than the median.(2) The sum of the 4 numbers other than the median is equal to 45.

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题目： If x, y, and z are consecutive even positive integers, which of the following could be equal to x + y + z ?

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题目： A certain dealership has a number of cars to be sold by its salespeople. How many cars are to be sold?(1) If each of the salespeople sales 4 of the cars, 23 cars will remain unsold.(2) If each of the salespeople sales 6 of the cars, 5 cars will remain unsold.

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题目： If $$x(x - 5)(x + 2) = 0$$, is x negative?(1) $${x}^{2}-{7}{x}\neq{0}$$(2) $${x}^{2}-{2}{x}-{15}\neq{0}$$

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题目： If each of the following fractions were written as a repeating decimal, which would have the longest sequence of different digits?

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题目： If n is a positive integer, what is the value of n ? (1) When n is divided by 3, the remainder is 2. (2) When $${n}^{2}$$ is divided by 3, the remainder is 1.

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题目： At Company X senior sales representatives visit the home office once every 30 days, and junior sales representatives visit the home office once every 20 days. The number of visits that a junior sales representative makes in a 2-year period is approximately what percent greater than the number of visits that a senior representative makes in the same period?

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题目： Appearing to be the only candidate whose views would be acceptable to its membership, the Youth Canorous finally endorsed George for city council.

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题目： Assume that any increase of 5% or more from one century to the next in the amount of a given food consumed by Barras residents is due primarily to a corresponding increase in imports of that food into Barras from other villages. Given this assumption and the information provided, for each of the following, select Yes if it describes a food likely imported by Barras during times of increased food consumption. Otherwise select No.

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题目： One view of the economy contends that a large drop in oil prices should eventually lead to lowering interest rates, as well as lowering fears about inflation, a rally in stocks and bonds, and a weakening of the dollar.

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题目： In 1993 Mr. Jacobs paid 4.8 percent of his taxable income in state taxes. In 1994 what percent of Mr. Jacobs` taxable income did he pay in state taxes?(1)In 1993 Mr. Jacobs's taxable income was $42,500.(2)In 1994 Mr. Jacobs paid $232 more in state taxes than he did in 1993.

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题目： What was the cost of a certain telephone call?(1)The call lasted 8 minutes.(2)The cost of the first minute of the call was $0.32, which was twice the cost of each minute of the call after the first.