单项选择题

From 1950 to 1985，the population of Country X increased by approximately how many million people （）

A、 45
B、 80
C、 165
D、 200
E、 It cannot be determined from the information given．

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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

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

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