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A={x|2a-1<x<a+2},B={x|3<x<5}.则能使A∪B=B成立的...
A={x|2a-1<x<a+2},B={x|3<x<5}.则能使A∪B=B成立的实数a的取值范围是( )
A.{a|2≤a<3}
B.{a|2<a<3}
C.{a|2≤a≤3}
D.{a|a≥2}
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