单项选择题
A.1191 B.1112.5 C.1146 D.1025
A.7523 B.13469 C.14958 D.15046
A.2456.4 B.1117.2 C.3256.7 D.1846.7
A.7.34% B.7.18% C.7.45% D.7.67%
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