题目内容
Let a be integral part of
and b be its decimal part.Let c be the integral part of
and d be the decimal part..if ad-bc=m,th
en( )
(A)-2<m<-1 (B)-1<m<0 (C)0<m<1 (D)1<m<2
(英汉词典:integral part 整数部分;decimal part 小数部分)
A
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