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2013年GRE数学精选练习题三(1)

2013-03-30 

  1.[x]represents the greatest integer less than or equal to x and [x] represents theleast integer greater than or equal to x.

  Column A:{[1.+[1.4]}/

  Column B: 1.4

  2. If the actual temperature is 13 degrees Fahrenheit and the windspeed is 14 miles per hour, then the apparent temperature could be

  A.5 degrees Fahrenheit B.-1 degrees Fahrenheit C.-0 degreesFahrenheit

  D.-5 degrees Fahrenheit E.-3 degreesFahrenheit

  3. Which of the following can be inferred from the table?

  (1).The apparent temperature for an actual temperature of 0 degreesFahrenheit and a wind speed of 15 miles per hour is the same as that for anactual temperature of 30 degrees Fahrenheit and a wind speed of 40 miles perhour.

  (2).At a constant wind speed, as the actualtemperature increases, the difference between the actual and the apparent temperaturesalso increases.

  (3).At a constant actual temperature of -10 degreesFahrenheit, the apparent temperature decreases at a constant rate as the windspeed increases.

  A.(1)only B.(2)only C.(1)and(3)only D.(2)and(3)only E.(1)(2)and(3)

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