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A.insistingB.perseveringC.persistingD.requiring
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【C13】A.orderedB.askedC.putD.required
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A.askedB.bornC.meantD.required
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【C17】A.RequireB.RequiringC.To RequireD.Required
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黄酮类化合物的基本骨架是A.C3-C6-C6B.C6-C3-C6C.C6-C6-C6D.C3-C6-C3E.C6-C6-C3
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【C9】A.likedB.askedC.hadD.wanted
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【C4】A.requestedB.supposedC.insistedD.expected