问题
选择题
在（-2）2，（-2）3，（-2）4，（-2）5中，负数有（ ）
A．1个
B．2个
C．3个
D．4个
答案
∵（-2）2，（-2）3，（-2）4，（-2）5中指数只有3、5两个数是奇数，
∴负数有（-2）3和（-2）5共2个．
故选B．
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在（-2）2，（-2）3，（-2）4，（-2）5中，负数有（ ）
A．1个
B．2个
C．3个
D．4个
∵（-2）2，（-2）3，（-2）4，（-2）5中指数只有3、5两个数是奇数，
∴负数有（-2）3和（-2）5共2个．
故选B．
| 选择方框中合适的选项完成对话。 | |
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