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【单选题】
已知定义在R上的函数y＝f(x)满足下列三个条件：①对任意的x∈Rf(x＋2)＝－f(x)；②对于任意的0≤x 1 2≤2，f(x 1 ) 2)；③y＝f(x＋2)的图像关于y轴对称．下列结论中，正确的是(　　)
A.
f(4.5)
B.
f(4.5)
C.
f(7)
D.
f(7)
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