A.[3/2,9] B.[-(3/2),6] C.[-2,3] D.[1,6]A.[3/2,9] B.[-(3/2),6] C.[-2,3] D.[1,6

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问题

选项 A.[3/2,9]
B.[-(3/2),6]
C.[-2,3]
D.[1,6]

答案A

解析
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