A.-1或1/4 B.1/3 C.1/4 D.-1 E.-1或1/3

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问题 A.-1或1/4B.1/3C.1/4D.-1E.-1或1/3

选项 A.-1或1/4
B.1/3
C.1/4
D.-1
E.-1或1/3

答案 E

解析
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