问题
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The word they in Paragraph 4 refers toA.most minor coinsB.the amount of nickel###
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The word them in Paragraph 4 refers toA.humansB.usC.societiesD.
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The word trickle in Paragraph 4 is closest in meaning to______.A.water dropB.stre
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In the article, the word "vital", in paragraph 4, line 4 is closest in meaning toA.importa
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The word "primitive" in paragraph 4 is closest in meaning to which of the following?A.simp
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The word“collapsed”in paragraph 4 most probably m