单项选择题

The funds distributed in 1992 for youth developments were approximately（）

A. $38，000
B. $170，000
C. $380，000
D. $450，000
E. $1，700，000

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单项选择题

The electricity used by the water heater was measured separately and its cost per kilowatt—hour was one—half the cost per kilowatt—hour of the rest of the electricity used．The cost of the electricity used by the water heater was most nearly what fraction of the total cost of all the electricity used（）

A.A
B.B
C.C
D.D
E.E

单项选择题

Which of the following statements can be inferred from the data（） Ⅰ Each household in the age—group 15 to24 had at least $7，500 in discretionary income． Ⅱ Of the age groups listed，the age—group55 to 59 had the greatest percent of households with discretionary income． Ⅲ For the age—group 50 to 54，average discretionary income per household was less than one—fourth of the average household income．

A. Ⅱ only
B. Ⅲ only
C. Ⅰ and Ⅱ only
D. Ⅱ and Ⅲ only
E. Ⅰ，Ⅱ，and Ⅲ

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