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.已知现有下列不等式:①②;③④。其中正确的是 ( ) A.②④ B.①② C....

.已知6ec8aac122bd4f6e现有下列不等式:①6ec8aac122bd4f6e6ec8aac122bd4f6e;③6ec8aac122bd4f6e6ec8aac122bd4f6e。其中正确的是                                       (    )

     A.②④                        B.①②                      C.③④                      D.①③

 

D 【解析】略
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