单项选择题
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A.To precisely locate the positions of soldiers, weapons and targets.
B.To prevent enemy forces from using it to locate US targets.
C.To track objects in three dimensions.
D.To aid farmers in precision planting and fertilizing,
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单项选择题
A.Two teams.B.Teams from many countries.C.One team.D.Three teams.
A.Two teams.
B.Teams from many countries.
C.One team.
D.Three teams.
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单项选择题
A.In a department store.B.At a restaurant.C.In a fishery.D.At a post office.
A.In a department store.
B.At a restaurant.
C.In a fishery.
D.At a post office.
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