Thanks to Dr Yuan’s research, the UN has more tools in the battle to rid the wor

题干

Thanks to Dr Yuan’s research, the UN has more tools in the battle to rid the world _____ hunger.

A．of

B．on

C．off

D．at

上一题下一题 0.64难度单项选择更新时间:2012-08-30 09:17:15

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