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题库 / EAOfficialPractice-2PA-161
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____.
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A
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B
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C
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D
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E
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a有bc，b有c，所以不存在ab，只能是ac
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