单项选择题
A.0.648B.0.32C.0.4D.0.35
A.1.858,0.538B.1.245,0.530C.0.881,0.583D.1.858,0.503
A.0.913B.0.891C.0.881D.0.867
A.50B.56.5C.57.5D.55.5
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