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【单选题】
已知集合 A={x|y= 1o g 2 (x-1) }，B={y|y= 3x x+1 } ，则A∩B=（ ）A.
[2，+∞）
B.
[2，3）∪（3，+∞）
C.
（1，+∞）
D.
[1，3）∪（3，+∞）
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