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The recent research attempts to      the effectiveness of different drugs used for the new virus.
A.coverB.guaranteeC.estimateD.evaluate
D

试题分析:句意:最近的研究试图评估不同药物用于抗这种新的病毒的有效性。evaluate评估;cover盖,遮蔽,采访,报导,涉及,包括;guarantee保证,担保;estimate估计,估算,评价,评论。本题最大的干扰项是C项。evaluate指强调“评定某人或某物的价值” 如: Let's evaluate the evidence. 让我们评定一下此证据的价值。estimate指“根据个人的知识、经验或认识而形成看法或判断, 并强调其估计的结果可能是错的”。如:I estimated his age at 40. 我估计他的年龄是四十岁。
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