39The word staple in the passage is closer in meaning to ______.
(A) a main focus
(B) a proved finding
(C) a striking event
(D) an innovative tool
詳解 (共 7 筆)
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Interstellar travel,...
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Interstellar (星際的)tr...
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星際旅行,星空之間的太空旅行,多年來一直...
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最近,與NASA的突破推進物理(BPP)...