Of the various schemes that have been proposed to model how gene transcription might work in the living body, those involving ac

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问题 Of the various schemes that have been proposed to model how gene transcription might work in the living body, those involving actual physical contact between enhancers and genes remain ______ , owing to an absence of direct evidence.

选项 A、surreptitious
B、decipherable
C、vindicated
D、suspicious
E、speculative

答案E

解析
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