问题
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[ A] expenditures [ B] benefits [ C] costs [ D] profits
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【C13】A.makeB.spendC.consumeD.cost
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【C4】A.resultsB.effectsC.expectationsD.consequences
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【C2】A.smallB.bigC.cheapD.costly
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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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56._________A. digitsB. marksC. imagesD. pictures