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【单选题】
若a，b为有理数，下列结论正确的是（ ）A.
如果a＞b，那么|a|＞|b|
B.
如果|a|≠|b|，那么a≠b
C.
如果a＞b，则a 2 ＞b 2
D.
如果a 2 ＞b 2 ，则a＞b
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