单项选择题
A、3/35 B、-3/35 C、-3/56 D、3/56
A.1/65 B.1/32 C.1/56 D.1/48
A.37 B.95 C.100 D.127
A.1030507020406 B.1030502040608 C.10305072040608 D.103050702040608
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