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It is important to keep ______ in an emergency (紧急情况).
A.quietB.calmC.silentD.still
B

试题分析:句意:在紧急情况下,保持镇定很重要。quiet安静;calm心情平静;silent沉默;still静止不动。结合句意,选B。
考点: 考查形容词的用法。
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