单项选择题

Month Temperatures
January 32，14，24，28
April 45，50，58，47
June 76，80，74，79
August 84，95，100，89
November 48，43，39，42
In a set of measurements，the range isdefined as the greatest measurement minusthe least measurement．According to thetable above，during the first four days ofwhich month was the range oftemperatures at noon the greatest（）

A. January
B. April
C. June
D. August
E. November

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According to the graph above， atapproximately what speed，in miles perhour(mph)，is the energy per distanceused in running approximately twice theenergy per distance used in walking（）

A. Between 6.5 and 7 mph
B. Between 5.5 and 6 mph
C. Between 4.5 and 5 mph
D. Between 3.5 and 4 mph
E. Between 2.5 and 3 mph
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In 1987 the average(arithmetic mean)population of the three most populous ofthe ten selected states was most nearly equal to（）

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