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NO.394
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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.

As astronomers do not yet have a good understanding of the fundamental nature of dark matter, it should not be a surprise that astronomy students’ ideas about dark matter are, at best, ______. 

superficial

sketchy

inconsistent

mistaken

outdated

far-fetched

Select two answer choices.

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