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【单选题】
下图中表示了黑头鸥可能出现的几种姿势： 一只海鸥偶然落在另一只海鸥的领地中，两只海鸥彼此相遇。以下哪一种可能是后来者的姿势（）
A.
姿势1
B.
姿势3
C.
姿势5
D.
姿势7
E.
姿势9
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