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1999 AMC8 · #1表达式与运算★☆☆☆☆

(6?3) + 4 - (2 - 1) = 5. To make this statement true, the question mark between the 6 and the 3 should be replaced by

要使等式 (6?3) + 4 - (2 - 1) = 5 成立，6 和 3 之间的问号应替换为

A.$\div$B.$\times$C.+D.-E.None of these / 以上都不对

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