单项选择题

A.in
B.on
C.at
D.by
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单项选择题
A.numberB.percentageC.partD.population
A.number
B.percentage
C.part
D.population
单项选择题
A.Very interesting.B.Very miserable.C.Very poor.D.Very wealthy.
A.Very interesting.
B.Very miserable.
C.Very poor.
D.Very wealthy.
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