Why does the author mention the “mother” and “father” in the first paragraph、

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• 1With what is the passage mainly concerned、

  A.The drawbacks of descriptive and inferential statistics.

  B.Applications of inferential statistics.

  C.The development and use of statistics.

  D.How to use descriptive statistics.

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• 2It can be inferred from the passage that the mass production of steel caused ____.

  A.a decline in the railroad industry

  B.a revolution in the industrial world

  C.an increase in the price of steel

  D.a feeling of discontent among steel workers

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• 3The words “Barges and steamers” could best be replaced by which of the following、

  A.Trains.

  B.Planes.

  C.Boats.

  D.Trucks.

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• 4According to the passage, where were large deposits of iron uncovered、

  A.In Pittsburgh.

  B.In the Mesabi Range.

  C.Near Lake Michigan.

  D.Near Lake Eri

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• 5According to the passage, how did Bessemer method make the mass production of steel possible、

  A.It directed air at melted iron in a furnace, removing all impurities.

  B.It slowly heated iron ore then stirred it and heated it again.

  C.It changed iron ore into iron which was a substitute for steel.

  D.It could quickly find deposits of iron ore under the ground.

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• 6Which of the following is NOT given as an example of qualitative variable、

  A.Gender.

  B.Height.

  C.College major.

  D.Type of personality.

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• 7Which of the following statements about descriptive statistics is best supported by the passage、

  A.It simplifies unwieldy masses of data.

  B.It leads to increased variability.

  C.It solves all numerical problems.

  D.It changes qualitative variables to quantitative variables.

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• 8According to the passage which is the purpose of examining a sample of a population、

  A.To compare different groups.

  B.To predict characteristics of the entire population.

  C.To consider all the quantitative variables.

  D.To tabulate collections of data.

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• 9He is among those lucky students who have won ____ to firstrate university.

  A.permission

  B.admittance

  C.profession

  D.admission

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• 10Mathematics as well as other subjects ____ a science.

  A.was

  B.is

  C.are

  D.belong to

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