单项选择题
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A.wheat prices are very low in the world
B.the demand for wheat is decreasing
C.many regions are affected by drought
D.the wheat consumption is becoming less
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单项选择题
A.inflationB.budget deficitC.national securityD.unemployment rate
A.inflation
B.budget deficit
C.national security
D.unemployment rate
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单项选择题
A.World grain supplies.B.World grain production.C.World grain consumption.D.World grain trad
A.World grain supplies.
B.World grain production.
C.World grain consumption.
D.World grain trad
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