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最新题目

题目内容

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纠错
Each of the species of a certain type of insect has at least one of five significant traits: A, B, C, D, and E. Furthermore, one study has determined that any species with Trait A has at least one of the Traits B and C. Another study has determined that any species with Trait C has at least one of the Traits D and E. And a third study has determined that any of the species with Trait B has Trait C. The results of each study are correct.Select different options for X and for Y such that the following statement most accurately describes the passage. Make only two selections, one in each column.In addition to the relationship between Traits B and C that is stated explicitly with respect to the third study, the passage implies that any of the insects that has Trait ____X____ also has Trait ____Y____.

X Y
A
A
A
B
B
B
C
C
C
D
D
D
E
E
E
正确答案: 1,3

参考解析

提交我的解析
    知识点概述
    逻辑推理中的条件推导关系,根据已知的不同特征之间的条件关系,推导隐含的特征关联。 解析
    已知条件为:有Trait A则有Trait B或Trait C;有Trait C则有Trait D或Trait E;有Trait B则有Trait C。从这些条件可以看出,只要有Trait B,根据“有Trait B则有Trait C”,必然有Trait C。所以X选B,Y选C。

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