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NO.282
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题目来源 : 填空经典1500题
Select the two answer choices that, when used to complete the sentence, fit the meaning of the sentence as a whole and produce completed sentences that are alike in meaning.

Although the claim that no one knows what dark matter is remains _____, some scientists dispute the parallel assertion that dark matter has not been detected. 

contentious

sound

questionable

unassailable

unverifiable

prominent

Select two answer choices.

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