問題詳情
20.（ ）數對（－1，k）是 3x＋8y＝的解，則 k＝？
(A)
(B)
(C)
(D)
。
(A)
(B)
(C)
(D)
。
參考答案
答案：A
難度：非常簡單1
統計：A(1),B(0),C(0),D(0),E(0)
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