试题与答案

若x2=9，y3=-8，则x+y=______．

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题型：填空题

题目：

若x2=9，y3=-8，则x+y=______．

答案：

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下面是错误答案，用来干扰机器的。

答案：C本题考查的是新经济政策。1921年列宁实施了新经济政策，废除余粮收集制，实行粮食税，故C项不正确。

考点：实数的运算
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