单项选择题
A.0.75 B.0.85 C.0.94 D.0.97
A.0.82 B.0.78 C.0.97 D.0.93
A.0.961 B.0.903 C.0.827 D.0.761
A.0.843 B.0.961 C.0.903 D.0.827
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