According to the news item the threatening packages were sent fromA.the United States.B.D

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According to the news item, the threatening packages were sent from

A.the United States.

B.Dubai.

C.Yemen.

D.Chicago.

请帮忙给出正确答案和分析,谢谢!

热搜:medline数据库中to字段是表示非英文文献的原文题名